Cookie.java
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上传日期:2021-09-03
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- package org.json;
- /*
- Copyright (c) 2002 JSON.org
- Permission is hereby granted, free of charge, to any person obtaining a copy
- of this software and associated documentation files (the "Software"), to deal
- in the Software without restriction, including without limitation the rights
- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- copies of the Software, and to permit persons to whom the Software is
- furnished to do so, subject to the following conditions:
- The above copyright notice and this permission notice shall be included in all
- copies or substantial portions of the Software.
- The Software shall be used for Good, not Evil.
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- SOFTWARE.
- */
- import java.text.ParseException;
- /**
- * 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 0.1
- */
- public class Cookie {
- private 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(String string) {
- char c;
- String s = string.trim();
- StringBuffer sb = new StringBuffer();
- int len = s.length();
- for (int i = 0; i < len; 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.
- * @throws ParseException
- * @param string The cookie specification string.
- * @return A JSONObject containing "name", "value", and possibly other
- * members.
- */
- public static JSONObject toJSONObject(String string) throws ParseException {
- String n;
- JSONObject o = new JSONObject();
- Object v;
- JSONTokener x = new JSONTokener(string);
- o.put("name", x.nextTo('='));
- x.next('=');
- o.put("value", x.nextTo(';'));
- x.next();
- while (x.more()) {
- n = JSONTokener.unescape(x.nextTo("=;"));
- if (x.next() != '=') {
- if (n.equals("secure")) {
- v = Boolean.TRUE;
- } else {
- throw x.syntaxError("Missing '=' in cookie parameter.");
- }
- } else {
- v = JSONTokener.unescape(x.nextTo(';'));
- x.next();
- }
- o.put(n, v);
- }
- return o;
- }
- /**
- * 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 o A JSONObject
- * @return A cookie specification string
- */
- public static String toString(JSONObject o) {
- StringBuffer sb = new StringBuffer();
- sb.append(escape(o.getString("name")));
- sb.append("=");
- sb.append(escape(o.getString("value")));
- if (o.has("expires")) {
- sb.append(";expires=");
- sb.append(o.getString("expires"));
- }
- if (o.has("domain")) {
- sb.append(";domain=");
- sb.append(escape(o.getString("domain")));
- }
- if (o.has("path")) {
- sb.append(";path=");
- sb.append(escape(o.getString("path")));
- }
- if (o.optBoolean("secure")) {
- sb.append(";secure");
- }
- return sb.toString();
- }
- }