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A standalone RTMP client library ported from the Red5 project
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package org.red5.io.utils;
/*
* RED5 Open Source Flash Server - http://code.google.com/p/red5/
*
* Copyright (c) 2006-2010 by respective authors (see below). All rights reserved.
*
* This library is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free Software
* Foundation; either version 2.1 of the License, or (at your option) any later
* version.
*
* This library 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along
* with this library; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;
import java.util.Enumeration;
import java.util.Random;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Generic file utility containing useful file or directory
* manipulation functions.
*
* @author Paul Gregoire ([email protected])
* @author Dominick Accattato ([email protected])
*/
public class FileUtil {
private static Logger log = LoggerFactory.getLogger(FileUtil.class);
public static void copyFile(File source, File dest) throws IOException {
log.debug("Copy from {} to {}", source.getAbsoluteFile(), dest
.getAbsoluteFile());
FileInputStream fi = new FileInputStream(source);
FileChannel fic = fi.getChannel();
MappedByteBuffer mbuf = fic.map(FileChannel.MapMode.READ_ONLY, 0,
source.length());
fic.close();
fi.close();
fi = null;
// ensure the destination directory exists
if (!dest.exists()) {
String destPath = dest.getPath();
log.debug("Destination path: {}", destPath);
String destDir = destPath.substring(0, destPath
.lastIndexOf(File.separatorChar));
log.debug("Destination dir: {}", destDir);
File dir = new File(destDir);
if (!dir.exists()) {
if (dir.mkdirs()) {
log.debug("Directory created");
} else {
log.warn("Directory not created");
}
}
dir = null;
}
FileOutputStream fo = new FileOutputStream(dest);
FileChannel foc = fo.getChannel();
foc.write(mbuf);
foc.close();
fo.close();
fo = null;
mbuf.clear();
mbuf = null;
}
public static void copyFile(String source, String dest) throws IOException {
copyFile(new File(source), new File(dest));
}
public static void moveFile(String source, String dest) throws IOException {
copyFile(source, dest);
File src = new File(source);
if (src.exists() && src.canRead()) {
if (src.delete()) {
log.debug("Source file was deleted");
} else {
log
.debug("Source file was not deleted, the file will be deleted on exit");
src.deleteOnExit();
}
} else {
log.warn("Source file could not be accessed for removal");
}
src = null;
}
/**
* Deletes a directory and its contents. This will fail if there are any
* file locks or if the directory cannot be emptied.
*
* @param directory directory to delete
* @throws IOException if directory cannot be deleted
* @return true if directory was successfully deleted; false if directory
* did not exist
*/
public static boolean deleteDirectory(String directory) throws IOException {
return deleteDirectory(directory, false);
}
/**
* Deletes a directory and its contents. This will fail if there are any
* file locks or if the directory cannot be emptied.
*
* @param directory directory to delete
* @param useOSNativeDelete flag to signify use of operating system delete function
* @throws IOException if directory cannot be deleted
* @return true if directory was successfully deleted; false if directory
* did not exist
*/
public static boolean deleteDirectory(String directory,
boolean useOSNativeDelete) throws IOException {
boolean result = false;
if (!useOSNativeDelete) {
File dir = new File(directory);
// first all files have to be cleared out
for (File file : dir.listFiles()) {
if (file.delete()) {
log.debug("{} was deleted", file.getName());
} else {
log.debug("{} was not deleted", file.getName());
file.deleteOnExit();
}
file = null;
}
// not you may remove the dir
if (dir.delete()) {
log.debug("Directory was deleted");
result = true;
} else {
log.debug("Directory was not deleted, it may be deleted on exit");
dir.deleteOnExit();
}
dir = null;
} else {
Process p = null;
Thread std = null;
try {
Runtime runTime = Runtime.getRuntime();
log.debug("Execute runtime");
//determine file system type
if (File.separatorChar == '\\') {
//we are windows
p = runTime.exec("CMD /D /C \"RMDIR /Q /S "
+ directory.replace('/', '\\') + "\"");
} else {
//we are unix variant
p = runTime.exec("rm -rf " + directory.replace('\\', File.separatorChar));
}
// observe std out
std = stdOut(p);
// wait for the observer threads to finish
while (std.isAlive()) {
try {
Thread.sleep(250);
} catch (Exception e) {
}
}
log.debug("Process threads wait exited");
result = true;
} catch (Exception e) {
log.error("Error running delete script", e);
} finally {
if (null != p) {
log.debug("Destroying process");
p.destroy();
p = null;
}
std = null;
}
}
return result;
}
/**
* Rename a file natively; using REN on Windows and mv on *nix.
*
* @param from old name
* @param to new name
*/
public static void rename(String from, String to) {
Process p = null;
Thread std = null;
try {
Runtime runTime = Runtime.getRuntime();
log.debug("Execute runtime");
//determine file system type
if (File.separatorChar == '\\') {
//we are windows
p = runTime.exec("CMD /D /C \"REN " + from + ' ' + to + "\"");
} else {
//we are unix variant
p = runTime.exec("mv -f " + from + ' ' + to);
}
// observe std out
std = stdOut(p);
// wait for the observer threads to finish
while (std.isAlive()) {
try {
Thread.sleep(250);
} catch (Exception e) {
}
}
log.debug("Process threads wait exited");
} catch (Exception e) {
log.error("Error running delete script", e);
} finally {
if (null != p) {
log.debug("Destroying process");
p.destroy();
p = null;
std = null;
}
}
}
/**
* Special method for capture of StdOut.
*
* @return
*/
private final static Thread stdOut(final Process p) {
final byte[] empty = new byte[128];
for (int b = 0; b < empty.length; b++) {
empty[b] = (byte) 0;
}
Thread std = new Thread() {
public void run() {
StringBuilder sb = new StringBuilder(1024);
byte[] buf = new byte[128];
BufferedInputStream bis = new BufferedInputStream(p
.getInputStream());
log.debug("Process output:");
try {
while (bis.read(buf) != -1) {
sb.append(new String(buf).trim());
// clear buffer
System.arraycopy(empty, 0, buf, 0, buf.length);
}
log.debug(sb.toString());
bis.close();
} catch (Exception e) {
log.error("{}", e);
}
}
};
std.setDaemon(true);
std.start();
return std;
}
/**
* Create a directory.
*
* @param directory directory to make
* @return whether a new directory was made
* @throws IOException if directory does not already exist or cannot be made
*/
public static boolean makeDirectory(String directory) throws IOException {
return makeDirectory(directory, false);
}
/**
* Create a directory. The parent directories will be created if
* createParents is passed as true.
*
* @param directory directory
* @param createParents whether to create all parents
* @return true if directory was created; false if it already existed
* @throws IOException if we cannot create directory
*
*/
public static boolean makeDirectory(String directory, boolean createParents)
throws IOException {
boolean created = false;
File dir = new File(directory);
if (createParents) {
created = dir.mkdirs();
if (created) {
log.debug("Directory created: {}", dir.getAbsolutePath());
} else {
log.debug("Directory was not created: {}", dir
.getAbsolutePath());
}
} else {
created = dir.mkdir();
if (created) {
log.debug("Directory created: {}", dir.getAbsolutePath());
} else {
log.debug("Directory was not created: {}", dir
.getAbsolutePath());
}
}
dir = null;
return created;
}
/**
* Unzips a war file to an application located under the webapps directory
*
* @param compressedFileName The String name of the war file
* @param destinationDir The destination directory, ie: webapps
*/
public static void unzip(String compressedFileName, String destinationDir) {
//strip everything except the applications name
String dirName = null;
// checks to see if there is a dash "-" in the filename of the war.
String applicationName = compressedFileName.substring(compressedFileName.lastIndexOf("/"));
int dashIndex = applicationName.indexOf('-');
if (dashIndex != -1) {
//strip everything except the applications name
dirName = compressedFileName.substring(0, dashIndex);
} else {
//grab every char up to the last '.'
dirName = compressedFileName.substring(0, compressedFileName.lastIndexOf('.'));
}
log.debug("Directory: {}", dirName);
//String tmpDir = System.getProperty("java.io.tmpdir");
File zipDir = new File(compressedFileName);
File parent = zipDir.getParentFile();
log.debug("Parent: {}", (parent != null ? parent.getName() : null));
//File tmpDir = new File(System.getProperty("java.io.tmpdir"), dirName);
File tmpDir = new File(destinationDir);
// make the war directory
log.debug("Making directory: {}", tmpDir.mkdirs());
try {
ZipFile zf = new ZipFile(compressedFileName);
Enumeration e = zf.entries();
while(e.hasMoreElements()) {
ZipEntry ze = (ZipEntry) e.nextElement();
log.debug("Unzipping {}", ze.getName());
if(ze.isDirectory()) {
log.debug("is a directory");
File dir = new File(tmpDir + "/" + ze.getName());
Boolean tmp = dir.mkdir();
log.debug("{}", tmp);
continue;
}
// checks to see if a zipEntry contains a path
// i.e. ze.getName() == "META-INF/MANIFEST.MF"
// if this case is true, then we create the path first
if(ze.getName().lastIndexOf("/") != -1) {
String zipName = ze.getName();
String zipDirStructure = zipName.substring(0, zipName.lastIndexOf("/"));
File completeDirectory = new File(tmpDir + "/" + zipDirStructure);
if(!completeDirectory.exists()) {
if(!completeDirectory.mkdirs()) {
log.error("could not create complete directory structure");
}
}
}
// creates the file
FileOutputStream fout = new FileOutputStream(tmpDir + "/" + ze.getName());
InputStream in = zf.getInputStream(ze);
copy(in, fout);
in.close();
fout.close();
}
e = null;
} catch (IOException e) {
log.error("Errord unzipping", e);
//log.warn("Exception {}", e);
}
}
public static void copy(InputStream in, OutputStream out) throws IOException {
synchronized(in) {
synchronized(out) {
byte[] buffer = new byte[256];
while (true) {
int bytesRead = in.read(buffer);
if(bytesRead == -1) break;
out.write(buffer, 0, bytesRead);
}
}
}
}
/**
* Unzips a given archive to a specified destination directory.
*
* @param compressedFileName
* @param destinationDir
*/
// public static void unzip(String compressedFileName, String destinationDir) {
// log.debug("Unzip - file: {} destination: {}", compressedFileName, destinationDir);
// try {
// final int BUFFER = 2048;
// BufferedOutputStream dest = null;
// FileInputStream fis = new FileInputStream(compressedFileName);
// CheckedInputStream checksum = new CheckedInputStream(fis,
// new Adler32());
// ZipInputStream zis = new ZipInputStream(new BufferedInputStream(
// checksum));
// ZipEntry entry;
// while ((entry = zis.getNextEntry()) != null) {
// log.debug("Extracting: {}", entry);
// String name = entry.getName();
// int count;
// byte data[] = new byte[BUFFER];
// // write the files to the disk
// File destFile = new File(destinationDir, name);
// log.debug("Absolute path: {}", destFile.getAbsolutePath());
// //create dirs as needed, look for file extension to determine type
// if (entry.isDirectory()) {
// log.debug("Entry is detected as a directory");
// if (destFile.mkdirs()) {
// log.debug("Directory created: {}", destFile.getName());
// } else {
// log.warn("Directory was not created: {}", destFile.getName());
// }
// destFile = null;
// continue;
// }
//
// FileOutputStream fos = new FileOutputStream(destFile);
// dest = new BufferedOutputStream(fos, BUFFER);
// while ((count = zis.read(data, 0, BUFFER)) != -1) {
// dest.write(data, 0, count);
// }
// dest.flush();
// dest.close();
// destFile = null;
// }
// zis.close();
// log.debug("Checksum: {}", checksum.getChecksum().getValue());
// } catch (Exception e) {
// log.error("Error unzipping {}", compressedFileName, e);
// log.warn("Exception {}", e);
// }
//
// }
/**
* Quick-n-dirty directory formatting to support launching in windows, specifically from ant.
* @param absWebappsPath abs webapps path
* @param contextDirName conext directory name
* @return full path
*/
public static String formatPath(String absWebappsPath, String contextDirName) {
StringBuilder path = new StringBuilder(absWebappsPath.length() + contextDirName.length());
path.append(absWebappsPath);
if (log.isTraceEnabled()) {
log.trace("Path start: {}", path.toString());
}
int idx = -1;
if (File.separatorChar != '/') {
while ((idx = path.indexOf(File.separator)) != -1) {
path.deleteCharAt(idx);
path.insert(idx, '/');
}
}
if (log.isTraceEnabled()) {
log.trace("Path step 1: {}", path.toString());
}
//remove any './'
if ((idx = path.indexOf("./")) != -1) {
path.delete(idx, idx + 2);
}
if (log.isTraceEnabled()) {
log.trace("Path step 2: {}", path.toString());
}
//add / to base path if one doesnt exist
if (path.charAt(path.length() - 1) != '/') {
path.append('/');
}
if (log.isTraceEnabled()) {
log.trace("Path step 3: {}", path.toString());
}
//remove the / from the beginning of the context dir
if (contextDirName.charAt(0) == '/' && path.charAt(path.length() - 1) == '/') {
path.append(contextDirName.substring(1));
} else {
path.append(contextDirName);
}
if (log.isTraceEnabled()) {
log.trace("Path step 4: {}", path.toString());
}
return path.toString();
}
/**
* Generates a custom name containing numbers and an underscore ex. 282818_00023.
* The name contains current seconds and a random number component.
*
* @return custom name
*/
public static String generateCustomName() {
Random random = new Random();
StringBuilder sb = new StringBuilder();
sb.append(PropertyConverter.getCurrentTimeSeconds());
sb.append('_');
int i = random.nextInt(99999);
if (i < 10) {
sb.append("0000");
} else if (i < 100) {
sb.append("000");
} else if (i < 1000) {
sb.append("00");
} else if (i < 10000) {
sb.append('0');
}
sb.append(i);
return sb.toString();
}
}
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