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src/main/java/com/intellectualcrafters/json/Cookie.java Normal file
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////////////////////////////////////////////////////////////////////////////////////////////////////
// PlotSquared - A plot manager and world generator for the Bukkit API /
// Copyright (c) 2014 IntellectualSites/IntellectualCrafters /
// /
// This program is free software; you can redistribute it and/or modify /
// it under the terms of the GNU General Public License as published by /
// the Free Software Foundation; either version 3 of the License, or /
// (at your option) any later version. /
// /
// This program 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 for more details. /
// /
// You should have received a copy of the GNU General Public License /
// along with this program; if not, write to the Free Software Foundation, /
// Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA /
// /
// You can contact us via: support@intellectualsites.com /
////////////////////////////////////////////////////////////////////////////////////////////////////
package com.intellectualcrafters.json;
/**
* Convert a web browser cookie specification to a JSONObject and back. JSON and Cookies are both notations for
* name/value pairs.
*
* @author JSON.org
* @version 2014-05-03
*/
public class Cookie {
/**
* Produce a copy of a string in which the characters '+', '%', '=', ';' and control characters are replaced with
* "%hh". This is a gentle form of URL encoding, attempting to cause as little distortion to the string as possible.
* The characters '=' and ';' are meta characters in cookies. By convention, they are escaped using the
* URL-encoding. This is only a convention, not a standard. Often, cookies are expected to have encoded values. We
* encode '=' and ';' because we must. We encode '%' and '+' because they are meta characters in URL encoding.
*
* @param string The source string.
*
* @return The escaped result.
*/
public static String escape(final String string) {
char c;
final String s = string.trim();
final int length = s.length();
final StringBuilder sb = new StringBuilder(length);
for (int i = 0; i < length; i += 1) {
c = s.charAt(i);
if ((c < ' ') || (c == '+') || (c == '%') || (c == '=') || (c == ';')) {
sb.append('%');
sb.append(Character.forDigit((char) ((c >>> 4) & 0x0f), 16));
sb.append(Character.forDigit((char) (c & 0x0f), 16));
} else {
sb.append(c);
}
}
return sb.toString();
}
/**
* Convert a cookie specification string into a JSONObject. The string will contain a name value pair separated by
* '='. The name and the value will be unescaped, possibly converting '+' and '%' sequences. The cookie properties
* may follow, separated by ';', also represented as name=value (except the secure property, which does not have a
* value). The name will be stored under the key "name", and the value will be stored under the key "value". This
* method does not do checking or validation of the parameters. It only converts the cookie string into a
* JSONObject.
*
* @param string The cookie specification string.
*
* @return A JSONObject containing "name", "value", and possibly other members.
*
* @throws JSONException
*/
public static JSONObject toJSONObject(final String string) throws JSONException {
String name;
final JSONObject jo = new JSONObject();
Object value;
final JSONTokener x = new JSONTokener(string);
jo.put("name", x.nextTo('='));
x.next('=');
jo.put("value", x.nextTo(';'));
x.next();
while (x.more()) {
name = unescape(x.nextTo("=;"));
if (x.next() != '=') {
if (name.equals("secure")) {
value = Boolean.TRUE;
} else {
throw x.syntaxError("Missing '=' in cookie parameter.");
}
} else {
value = unescape(x.nextTo(';'));
x.next();
}
jo.put(name, value);
}
return jo;
}
/**
* Convert a JSONObject into a cookie specification string. The JSONObject must contain "name" and "value" members.
* If the JSONObject contains "expires", "domain", "path", or "secure" members, they will be appended to the cookie
* specification string. All other members are ignored.
*
* @param jo A JSONObject
*
* @return A cookie specification string
*
* @throws JSONException
*/
public static String toString(final JSONObject jo) throws JSONException {
final StringBuilder sb = new StringBuilder();
sb.append(escape(jo.getString("name")));
sb.append("=");
sb.append(escape(jo.getString("value")));
if (jo.has("expires")) {
sb.append(";expires=");
sb.append(jo.getString("expires"));
}
if (jo.has("domain")) {
sb.append(";domain=");
sb.append(escape(jo.getString("domain")));
}
if (jo.has("path")) {
sb.append(";path=");
sb.append(escape(jo.getString("path")));
}
if (jo.optBoolean("secure")) {
sb.append(";secure");
}
return sb.toString();
}
/**
* Convert <code>%</code><i>hh</i> sequences to single characters, and convert plus to space.
*
* @param string A string that may contain <code>+</code> &nbsp;<small>(plus)</small> and <code>%</code><i>hh</i>
* sequences.
*
* @return The unescaped string.
*/
public static String unescape(final String string) {
final int length = string.length();
final StringBuilder sb = new StringBuilder(length);
for (int i = 0; i < length; ++i) {
char c = string.charAt(i);
if (c == '+') {
c = ' ';
} else if ((c == '%') && ((i + 2) < length)) {
final int d = JSONTokener.dehexchar(string.charAt(i + 1));
final int e = JSONTokener.dehexchar(string.charAt(i + 2));
if ((d >= 0) && (e >= 0)) {
c = (char) ((d * 16) + e);
i += 2;
}
}
sb.append(c);
}
return sb.toString();
}
}