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473 lines
17 KiB
473 lines
17 KiB
//serverObjects.java
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//-----------------------
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//(C) by Michael Peter Christen; mc@yacy.net
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//first published on http://www.anomic.de
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//Frankfurt, Germany, 2004
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//(C) changes by Bjoern 'fuchs' Krombholz
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//
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// $LastChangedDate$
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// $LastChangedRevision$
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// $LastChangedBy$
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//
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//This program is free software; you can redistribute it and/or modify
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//it under the terms of the GNU General Public License as published by
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//the Free Software Foundation; either version 2 of the License, or
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//(at your option) any later version.
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//This program is distributed in the hope that it will be useful,
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//but WITHOUT ANY WARRANTY; without even the implied warranty of
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//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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//GNU General Public License for more details.
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//You should have received a copy of the GNU General Public License
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//along with this program; if not, write to the Free Software
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//Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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/*
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Why do we need this Class?
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The purpose of this class is to provide a hashtable object to the server
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and implementing interfaces. Values to and from cgi pages are encapsulated in
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this object. The server shall be executable in a Java 1.0 environment,
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so the following other options did not comply:
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Properties - setProperty would be needed, but only available in 1.2
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HashMap, TreeMap - only in 1.2
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Hashtable - available in 1.0, but 'put' does not accept null values
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//FIXME: it's 2012, do we still need support for Java 1.0?!
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So this class was created as a convenience.
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It will also contain special methods that read data from internet-resources
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in the background, while data can already be read out of the object.
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This shall speed up usage when a slow internet connection is used (dial-up)
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*/
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package de.anomic.server;
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import java.io.BufferedOutputStream;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.UnsupportedEncodingException;
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import java.net.InetAddress;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.regex.Pattern;
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import net.yacy.cora.document.MultiProtocolURI;
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import net.yacy.cora.document.UTF8;
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import net.yacy.cora.protocol.RequestHeader;
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import net.yacy.cora.protocol.RequestHeader.FileType;
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import net.yacy.document.parser.html.CharacterCoding;
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import net.yacy.kelondro.util.Formatter;
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import net.yacy.search.Switchboard;
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public class serverObjects extends HashMap<String, String> implements Cloneable {
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public static final String ACTION_AUTHENTICATE = "AUTHENTICATE";
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public static final String ACTION_LOCATION = "LOCATION";
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public final static String ADMIN_AUTHENTICATE_MSG = "admin log-in. If you don't know the password, set it with {yacyhome}/bin/passwd.sh {newpassword}";
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private final static Pattern patternNewline = Pattern.compile("\n");
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private final static Pattern patternDoublequote = Pattern.compile("\"");
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private final static Pattern patternSlash = Pattern.compile("/");
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private final static Pattern patternB = Pattern.compile("\b");
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private final static Pattern patternF = Pattern.compile("\f");
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private final static Pattern patternR = Pattern.compile("\r");
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private final static Pattern patternT = Pattern.compile("\t");
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private static final long serialVersionUID = 1L;
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private boolean localized = true;
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private final static char BOM = '\uFEFF'; // ByteOrderMark character that may appear at beginnings of Strings (Browser may append that)
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public serverObjects() {
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super();
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}
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public serverObjects(final int initialCapacity) {
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super(initialCapacity);
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}
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public serverObjects(final Map<String, String> input) {
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super(input);
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}
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public void authenticationRequired() {
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this.put(ACTION_AUTHENTICATE, ADMIN_AUTHENTICATE_MSG);
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}
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private static final String removeByteOrderMark(final String s) {
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if (s == null || s.length() == 0) return s;
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if (s.charAt(0) == BOM) return s.substring(1);
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return s;
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}
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/**
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* Add a key-value pair of Objects to the map.
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* @param key This method will do nothing if the key is <code>null</code>.
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* @param value The value that should be mapped to the key.
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* If value is <code>null</code>, then the element at <code>key</code>
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* is removed from the map.
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* @return The value that was added to the map.
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* @see java.util.Hashtable#insert(K, V)
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*/
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@Override
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public String put(final String key, final String value) {
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if (key == null) {
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// this does nothing
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return null;
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} else if (value == null) {
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// assigning the null value creates the same effect like removing the element
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return super.remove(key);
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} else {
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return super.put(key, value);
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}
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}
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public String put(final String key, final String[] values) {
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if (key == null) {
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// this does nothing
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return null;
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} else if (values == null) {
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// assigning the null value creates the same effect like removing the element
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return super.remove(key);
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} else {
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StringBuilder sb = new StringBuilder(10 + values.length * 8);
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for (String s: values) sb.append(s).append(' ');
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return put(key, sb.toString().trim());
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}
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}
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/**
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* Add a key-value pair of Objects to the map.
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* @param key This method will do nothing if the key is <code>null</code>.
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* @param value The value that should be mapped to the key.
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* If value is <code>null</code>, then the element at <code>key</code>
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* is removed from the map.
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* @return The value that was added to the map.
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* @see java.util.Hashtable#insert(K, V)
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*/
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public void put(final String key, final StringBuilder value) {
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if (key == null) {
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// this does nothing
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return;
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} else if (value == null) {
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// assigning the null value creates the same effect like removing the element
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super.remove(key);
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} else {
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super.put(key, value.toString());
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}
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}
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/**
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* Add byte array to the map, value is kept as it is.
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* @param key key name as String.
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* @param value mapped value as a byte array.
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* @return the previous value as String.
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*/
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public String put(final String key, final byte[] value) {
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return this.put(key, UTF8.String(value));
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}
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/**
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* Add an unformatted String representation of a double/float value
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* to the map.
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* @param key key name as String.
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* @param value value as double/float.
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* @return value as it was added to the map or <code>NaN</code> if an error occured.
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*/
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public double put(final String key, final float value) {
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return (null == this.put(key, Float.toString(value))) ? Float.NaN : value;
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}
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public double put(final String key, final double value) {
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return (null == this.put(key, Double.toString(value))) ? Double.NaN : value;
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}
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/**
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* same as {@link #put(String, double)} but for integer types
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* @return Returns 0 for the error case.
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*/
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public long put(final String key, final long value) {
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return (null == this.put(key, Long.toString(value))) ? 0 : value;
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}
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public String put(final String key, final java.util.Date value) {
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return this.put(key, value.toString());
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}
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public String put(final String key, final InetAddress value) {
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return this.put(key, value.toString());
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}
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/**
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* Add a String to the map. The content of the String is escaped to be usable in JSON output.
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* @param key key name as String.
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* @param value a String that will be reencoded for JSON output.
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* @return the modified String that was added to the map.
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*/
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public String putJSON(final String key, final String value) {
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return put(key, toJSON(value));
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}
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public String putJSON(final String key, final StringBuilder value) {
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return put(key, toJSON(value.toString()));
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}
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private static String toJSON(String value) {
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// value = value.replaceAll("\\", "\\\\");
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value = patternDoublequote.matcher(value).replaceAll("'");
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value = patternSlash.matcher(value).replaceAll("\\/");
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value = patternB.matcher(value).replaceAll("\\b");
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value = patternF.matcher(value).replaceAll("\\f");
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value = patternNewline.matcher(value).replaceAll("\\r");
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value = patternR.matcher(value).replaceAll("\\r");
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value = patternT.matcher(value).replaceAll("\\t");
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return value;
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}
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public String putJSON(final String key, final byte[] value) {
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return putJSON(key, UTF8.String(value));
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}
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/**
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* Add a String to the map. The content of the String is escaped to be usable in HTML output.
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* @param key key name as String.
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* @param value a String that will be reencoded for HTML output.
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* @return the modified String that was added to the map.
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* @see CharacterCoding#encodeUnicode2html(String, boolean)
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*/
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public String putHTML(final String key, final String value) {
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return put(key, CharacterCoding.unicode2html(value, true));
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}
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public String putHTML(final String key, final byte[] value) {
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return putHTML(key, UTF8.String(value));
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}
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/**
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* Like {@link #putHTML(String, String)} but takes an extra argument defining, if the returned
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* String should be used in normal HTML: <code>false</code>.
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* If forXML is <code>true</code>, then only the characters <b>& " < ></b> will be
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* replaced in the returned String.
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*/
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public String putXML(final String key, final String value) {
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return put(key, CharacterCoding.unicode2xml(value, true));
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}
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/**
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* put the key/value pair with a special method according to the given file type
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* @param fileType
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* @param key
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* @param value
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* @return
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*/
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public String put(final RequestHeader.FileType fileType, final String key, final String value) {
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if (fileType == FileType.JSON) return putJSON(key, value);
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if (fileType == FileType.XML) return putXML(key, value);
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return putHTML(key, value);
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}
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/**
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* Add a byte/long/integer to the map. The number will be encoded into a String using
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* a localized format specified by {@link Formatter} and {@link #setLocalized(boolean)}.
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* @param key key name as String.
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* @param value integer type value to be added to the map in its formatted String
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* representation.
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* @return the String value added to the map.
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*/
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public String putNum(final String key, final long value) {
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return this.put(key, Formatter.number(value, this.localized));
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}
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/**
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* Variant for double/float types.
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* @see #putNum(String, long)
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*/
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public String putNum(final String key, final double value) {
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return this.put(key, Formatter.number(value, this.localized));
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}
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/**
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* Variant for string encoded numbers.
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* @see #putNum(String, long)
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*/
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public String putNum(final String key, final String value) {
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return this.put(key, value == null ? "" : Formatter.number(value));
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}
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public String putWiki(final String hostport, final String key, final String wikiCode){
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return this.put(key, Switchboard.wikiParser.transform(hostport, wikiCode));
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}
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public String putWiki(final String hostport, final String key, final byte[] wikiCode) {
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try {
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return this.put(key, Switchboard.wikiParser.transform(hostport, wikiCode));
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} catch (final UnsupportedEncodingException e) {
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return this.put(key, "Internal error pasting wiki-code: " + e.getMessage());
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}
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}
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// inc variant: for counters
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public long inc(final String key) {
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String c = super.get(key);
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if (c == null) c = "0";
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final long l = Long.parseLong(c) + 1;
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super.put(key, Long.toString(l));
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return l;
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}
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// new get with default objects
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public Object get(final String key, final Object dflt) {
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final Object result = super.get(key);
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return (result == null) ? dflt : result;
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}
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// string variant
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public String get(final String key, final String dflt) {
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final String result = removeByteOrderMark(super.get(key));
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return (result == null) ? dflt : result;
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}
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public int getInt(final String key, final int dflt) {
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final String s = removeByteOrderMark(super.get(key));
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if (s == null) return dflt;
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try {
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return Integer.parseInt(s);
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} catch (final NumberFormatException e) {
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return dflt;
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}
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}
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public long getLong(final String key, final long dflt) {
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final String s = removeByteOrderMark(super.get(key));
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if (s == null) return dflt;
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try {
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return Long.parseLong(s);
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} catch (final NumberFormatException e) {
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return dflt;
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}
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}
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public float getFloat(final String key, final float dflt) {
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final String s = removeByteOrderMark(super.get(key));
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if (s == null) return dflt;
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try {
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return Float.parseFloat(s);
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} catch (final NumberFormatException e) {
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return dflt;
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}
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}
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public double getDouble(final String key, final double dflt) {
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final String s = removeByteOrderMark(super.get(key));
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if (s == null) return dflt;
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try {
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return Double.parseDouble(s);
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} catch (final NumberFormatException e) {
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return dflt;
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}
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}
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public boolean getBoolean(final String key, final boolean dflt) {
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String s = removeByteOrderMark(super.get(key));
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if (s == null) return dflt;
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s = s.toLowerCase();
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return s.equals("true") || s.equals("on") || s.equals("1");
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}
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public boolean hasValue(final String key) {
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final String s = super.get(key);
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return (s != null && !s.isEmpty());
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}
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// returns a set of all values where their key mappes the keyMapper
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public String[] getAll(final String keyMapper) {
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// the keyMapper may contain regular expressions as defined in String.matches
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// this method is particulary useful when parsing the result of checkbox forms
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final List<String> v = new ArrayList<String>();
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for (final Map.Entry<String, String> entry: entrySet()) {
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if (entry.getKey().matches(keyMapper)) {
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v.add(entry.getValue());
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}
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}
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return v.toArray(new String[0]);
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}
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// put all elements of another hashtable into the own table
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public void putAll(final serverObjects add) {
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for (final Map.Entry<String, String> entry: add.entrySet()) {
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put(entry.getKey(), entry.getValue());
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}
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}
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// convenience methods for storing and loading to a file system
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public void store(final File f) throws IOException {
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BufferedOutputStream fos = null;
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try {
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fos = new BufferedOutputStream(new FileOutputStream(f));
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final StringBuilder line = new StringBuilder(64);
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for (final Map.Entry<String, String> entry : entrySet()) {
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line.delete(0, line.length());
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line.append(entry.getKey());
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line.append("=");
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line.append(patternNewline.matcher(entry.getValue()).replaceAll("\\\\n"));
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line.append("\r\n");
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fos.write(UTF8.getBytes(line.toString()));
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}
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} finally {
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if (fos != null) {
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try {
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fos.flush();
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fos.close();
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} catch (final Exception e){}
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}
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}
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}
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/**
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* Defines the localization state of this object.
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* Currently it is used for numbers added with the putNum() methods only.
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* @param loc if <code>true</code> store numbers in a localized format, otherwise
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* use a default english locale without grouping.
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* @see Formatter#setLocale(String)
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*/
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public void setLocalized(final boolean loc) {
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this.localized = loc;
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}
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@Override
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public Object clone() {
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return super.clone();
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}
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/**
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* output the objects in a HTTP GET syntax
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*/
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@Override
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public String toString() {
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if (isEmpty()) return "";
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final StringBuilder param = new StringBuilder(size() * 40);
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for (final Map.Entry<String, String> entry: entrySet()) {
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param.append(MultiProtocolURI.escape(entry.getKey()))
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.append('=')
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.append(MultiProtocolURI.escape(entry.getValue()))
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.append('&');
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}
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param.setLength(param.length() - 1);
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return param.toString();
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}
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public static void main(final String[] args) {
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final String v = "ein \"zitat\"";
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System.out.println(toJSON(v));
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}
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}
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