browser.jsp

jsp File Browser version 1.1a

			byte b;
			if (boundary == null || ba == null) return false;
			for (int i = 0; i < boundary.length(); i++)
				if ((byte) boundary.charAt(i) != ba[i]) return false;
			return true;
		}

		/** Convenience method to read HTTP header lines */
		private synchronized String getLine(ServletInputStream sis) throws IOException {
			byte b[] = new byte[1024];
			int read = sis.readLine(b, 0, b.length), index;
			String line = null;
			if (read != -1) {
				line = new String(b, 0, read);
				if ((index = line.indexOf('\n')) >= 0) line = line.substring(0, index - 1);
			}
			return line;
		}

		public String getFileName(String dir, String fileName) throws IllegalArgumentException {
			String path = null;
			if (dir == null || fileName == null) throw new IllegalArgumentException(
					"dir or fileName is null");
			int index = fileName.lastIndexOf('/');
			String name = null;
			if (index >= 0) name = fileName.substring(index + 1);
			else name = fileName;
			index = name.lastIndexOf('\\');
			if (index >= 0) fileName = name.substring(index + 1);
			path = dir + File.separator + fileName;
			if (File.separatorChar == '/') return path.replace('\\', File.separatorChar);
			else return path.replace('/', File.separatorChar);
		}
	} //End of class HttpMultiPartParser

	/**
	 * This class is a comparator to sort the filenames and dirs
	 */
	class FileComp implements Comparator {

		int mode;
		int sign;

		FileComp() {
			this.mode = 1;
			this.sign = 1;
		}

		/**
		 * @param mode sort by 1=Filename, 2=Size, 3=Date, 4=Type
		 * The default sorting method is by Name
		 * Negative mode means descending sort
		 */
		FileComp(int mode) {
			if (mode < 0) {
				this.mode = -mode;
				sign = -1;
			}
			else {
				this.mode = mode;
				this.sign = 1;
			}
		}

		public int compare(Object o1, Object o2) {
			File f1 = (File) o1;
			File f2 = (File) o2;
			if (f1.isDirectory()) {
				if (f2.isDirectory()) {
					switch (mode) {
					//Filename or Type
					case 1:
					case 4:
						return sign
								* f1.getAbsolutePath().toUpperCase().compareTo(
										f2.getAbsolutePath().toUpperCase());
					//Filesize
					case 2:
						return sign * (new Long(f1.length()).compareTo(new Long(f2.length())));
					//Date
					case 3:
						return sign
								* (new Long(f1.lastModified())
										.compareTo(new Long(f2.lastModified())));
					default:
						return 1;
					}
				}
				else return -1;
			}
			else if (f2.isDirectory()) return 1;
			else {
				switch (mode) {
				case 1:
					return sign
							* f1.getAbsolutePath().toUpperCase().compareTo(
									f2.getAbsolutePath().toUpperCase());
				case 2:
					return sign * (new Long(f1.length()).compareTo(new Long(f2.length())));
				case 3:
					return sign
							* (new Long(f1.lastModified()).compareTo(new Long(f2.lastModified())));
				case 4: { // Sort by extension
					int tempIndexf1 = f1.getAbsolutePath().lastIndexOf('.');
					int tempIndexf2 = f2.getAbsolutePath().lastIndexOf('.');
					if ((tempIndexf1 == -1) && (tempIndexf2 == -1)) { // Neither have an extension
						return sign
								* f1.getAbsolutePath().toUpperCase().compareTo(
										f2.getAbsolutePath().toUpperCase());
					}
					// f1 has no extension
					else if (tempIndexf1 == -1) return -sign;
					// f2 has no extension
					else if (tempIndexf2 == -1) return sign;
					// Both have an extension
					else {
						String tempEndf1 = f1.getAbsolutePath().toUpperCase()
								.substring(tempIndexf1);
						String tempEndf2 = f2.getAbsolutePath().toUpperCase()
								.substring(tempIndexf2);
						return sign * tempEndf1.compareTo(tempEndf2);
					}
				}
				default:
					return 1;
				}
			}
		}
	}

	/**
	 * Wrapperclass to wrap an OutputStream around a Writer
	 */
	class Writer2Stream extends OutputStream {

		Writer out;

		Writer2Stream(Writer w) {
			super();
			out = w;
		}

		public void write(int i) throws IOException {
			out.write(i);
		}

		public void write(byte[] b) throws IOException {
			for (int i = 0; i < b.length; i++) {
				int n = b[i];
				//Convert byte to ubyte
				n = ((n >>> 4) & 0xF) * 16 + (n & 0xF);
				out.write(n);
			}
		}

		public void write(byte[] b, int off, int len) throws IOException {
			for (int i = off; i < off + len; i++) {
				int n = b[i];
				n = ((n >>> 4) & 0xF) * 16 + (n & 0xF);
				out.write(n);
			}
		}
	} //End of class Writer2Stream

	static Vector expandFileList(String[] files, boolean inclDirs) {
		Vector v = new Vector();
		if (files == null) return v;
		for (int i = 0; i < files.length; i++)
			v.add(new File(URLDecoder.decode(files[i])));
		for (int i = 0; i < v.size(); i++) {
			File f = (File) v.get(i);
			if (f.isDirectory()) {
				File[] fs = f.listFiles();
				for (int n = 0; n < fs.length; n++)
					v.add(fs[n]);
				if (!inclDirs) {
					v.remove(i);
					i--;
				}
			}
		}
		return v;
	}

	/**
	 * Method to build an absolute path
	 * @param dir the root dir
	 * @param name the name of the new directory
	 * @return if name is an absolute directory, returns name, else returns dir+name
	 */
	static String getDir(String dir, String name) {
		if (!dir.endsWith(File.separator)) dir = dir + File.separator;
		File mv = new File(name);
		String new_dir = null;
		if (!mv.isAbsolute()) {
			new_dir = dir + name;
		}
		else new_dir = name;
		return new_dir;
	}

	/**
	 * This Method converts a byte size in a kbytes or Mbytes size, depending on the size
	 *     @param size The size in bytes
	 *     @return String with size and unit
	 */
	static String convertFileSize(long size) {
		int divisor = 1;
		String unit = "bytes";
		if (size >= 1024 * 1024) {
			divisor = 1024 * 1024;
			unit = "MB";
		}
		else if (size >= 1024) {
			divisor = 1024;
			unit = "KB";
		}
		if (divisor == 1) return size / divisor + " " + unit;
		String aftercomma = "" + 100 * (size % divisor) / divisor;
		if (aftercomma.length() == 1) aftercomma = "0" + aftercomma;
		return size / divisor + "." + aftercomma + " " + unit;
	}

	/**
	 * Copies all data from in to out
	 * 	@param in the input stream
	 *	@param out the output stream
	 *	@param buffer copy buffer
	 */
	static void copyStreams(InputStream in, OutputStream out, byte[] buffer) throws IOException {
		copyStreamsWithoutClose(in, out, buffer);
		in.close();
		out.close();
	}

	/**
	 * Copies all data from in to out
	 * 	@param in the input stream
	 *	@param out the output stream
	 *	@param buffer copy buffer
	 */
	static void copyStreamsWithoutClose(InputStream in, OutputStream out, byte[] buffer)
			throws IOException {
		int b;
		while ((b = in.read(buffer)) != -1)
			out.write(buffer, 0, b);
	}

	/**
	 * Returns the Mime Type of the file, depending on the extension of the filename
	 */
	static String getMimeType(String fName) {
		fName = fName.toLowerCase();
		if (fName.endsWith(".jpg") || fName.endsWith(".jpeg") || fName.endsWith(".jpe")) return "image/jpeg";
		else if (fName.endsWith(".gif")) return "image/gif";
		else if (fName.endsWith(".pdf")) return "application/pdf";
		else if (fName.endsWith(".htm") || fName.endsWith(".html") || fName.endsWith(".shtml")) return "text/html";
		else if (fName.endsWith(".avi")) return "video/x-msvideo";
		else if (fName.endsWith(".mov") || fName.endsWith(".qt")) return "video/quicktime";
		else if (fName.endsWith(".mpg") || fName.endsWith(".mpeg") || fName.endsWith(".mpe")) return "video/mpeg";
		else if (fName.endsWith(".zip")) return "application/zip";
		else if (fName.endsWith(".tiff") || fName.endsWith(".tif")) return "image/tiff";
		else if (fName.endsWith(".rtf")) return "application/rtf";
		else if (fName.endsWith(".mid") || fName.endsWith(".midi")) return "audio/x-midi";
		else if (fName.endsWith(".xl") || fName.endsWith(".xls") || fName.endsWith(".xlv")
				|| fName.endsWith(".xla") || fName.endsWith(".xlb") || fName.endsWith(".xlt")
				|| fName.endsWith(".xlm") || fName.endsWith(".xlk")) return "application/excel";
		else if (fName.endsWith(".doc") || fName.endsWith(".dot")) return "application/msword";
		else if (fName.endsWith(".png")) return "image/png";
		else if (fName.endsWith(".xml")) return "text/xml";
		else if (fName.endsWith(".svg")) return "image/svg+xml";
		else if (fName.endsWith(".mp3")) return "audio/mp3";
		else if (fName.endsWith(".ogg")) return "audio/ogg";
		else return "text/plain";
	}

	/**
	 * Converts some important chars (int) to the corresponding html string
	 */
	static String conv2Html(int i) {
		if (i == '&') return "&amp;";
		else if (i == '<') return "&lt;";
		else if (i == '>') return "&gt;";
		else if (i == '"') return "&quot;";
		else return "" + (char) i;
	}

	/**
	 * Converts a normal string to a html conform string
	 */
	static String conv2Html(String st) {
		StringBuffer buf = new StringBuffer();
		for (int i = 0; i < st.length(); i++) {
			buf.append(conv2Html(st.charAt(i)));
		}
		return buf.toString();
	}

	/**
	 * Starts a native process on the server
	 * 	@param command the command to start the process
	 *	@param dir the dir in which the process starts
	 */
	static String startProcess(String command, String dir) throws IOException {
		StringBuffer ret = new StringBuffer();
		String[] comm = new String[3];
		comm[0] = COMMAND_INTERPRETER[0];
		comm[1] = COMMAND_INTERPRETER[1];
		comm[2] = command;
		long start = System.currentTimeMillis();
		try {
			//Start process
			Process ls_proc = Runtime.getRuntime().exec(comm, null, new File(dir));
			//Get input and error streams
			BufferedInputStream ls_in = new BufferedInputStream(ls_proc.getInputStream());
			BufferedInputStream ls_err = new BufferedInputStream(ls_proc.getErrorStream());
			boolean end = false;
			while (!end) {
				int c = 0;
				while ((ls_err.available() > 0) && (++c <= 1000)) {
					ret.append(conv2Html(ls_err.read()));
				}
				c = 0;
				while ((ls_in.available() > 0) && (++c <= 1000)) {
					ret.append(conv2Html(ls_in.read()));
				}
				try {
					ls_proc.exitValue();
					//if the process has not finished, an exception is thrown
					//else
					while (ls_err.available() > 0)
						ret.append(conv2Html(ls_err.read()));
					while (ls_in.available() > 0)
						ret.append(conv2Html(ls_in.read()));
					end = true;
				}
				catch (IllegalThreadStateException ex) {
					//Process is running
				}
				//The process is not allowed to run longer than given time.
				if (System.currentTimeMillis() - start > MAX_PROCESS_RUNNING_TIME) {
					ls_proc.destroy();
					end = true;
					ret.append("!!!! Process has timed out, destroyed !!!!!");