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 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.util.Iterator;
/**
* Convert an HTTP header to a JSONObject and back.
* @author JSON.org
* @version 2008-09-18
*/
public class HTTP {
/** Carriage return/line feed. */
public static final String CRLF = "\r\n";
/**
* Convert an HTTP header string into a JSONObject. It can be a request
* header or a response header. A request header will contain
* <pre>{
* Method: "POST" (for example),
* "Request-URI": "/" (for example),
* "HTTP-Version": "HTTP/1.1" (for example)
* }</pre>
* A response header will contain
* <pre>{
* "HTTP-Version": "HTTP/1.1" (for example),
* "Status-Code": "200" (for example),
* "Reason-Phrase": "OK" (for example)
* }</pre>
* In addition, the other parameters in the header will be captured, using
* the HTTP field names as JSON names, so that <pre>
* Date: Sun, 26 May 2002 18:06:04 GMT
* Cookie: Q=q2=PPEAsg--; B=677gi6ouf29bn&b=2&f=s
* Cache-Control: no-cache</pre>
* become
* <pre>{...
* Date: "Sun, 26 May 2002 18:06:04 GMT",
* Cookie: "Q=q2=PPEAsg--; B=677gi6ouf29bn&b=2&f=s",
* "Cache-Control": "no-cache",
* ...}</pre>
* It does no further checking or conversion. It does not parse dates.
* It does not do '%' transforms on URLs.
* @param string An HTTP header string.
* @return A JSONObject containing the elements and attributes
* of the XML string.
* @throws JSONException
*/
public static JSONObject toJSONObject(String string) throws JSONException {
JSONObject o = new JSONObject();
HTTPTokener x = new HTTPTokener(string);
String t;
t = x.nextToken();
if (t.toUpperCase().startsWith("HTTP")) {
// Response
o.put("HTTP-Version", t);
o.put("Status-Code", x.nextToken());
o.put("Reason-Phrase", x.nextTo('\0'));
x.next();
} else {
// Request
o.put("Method", t);
o.put("Request-URI", x.nextToken());
o.put("HTTP-Version", x.nextToken());
}
// Fields
while (x.more()) {
String name = x.nextTo(':');
x.next(':');
o.put(name, x.nextTo('\0'));
x.next();
}
return o;
}
/**
* Convert a JSONObject into an HTTP header. A request header must contain
* <pre>{
* Method: "POST" (for example),
* "Request-URI": "/" (for example),
* "HTTP-Version": "HTTP/1.1" (for example)
* }</pre>
* A response header must contain
* <pre>{
* "HTTP-Version": "HTTP/1.1" (for example),
* "Status-Code": "200" (for example),
* "Reason-Phrase": "OK" (for example)
* }</pre>
* Any other members of the JSONObject will be output as HTTP fields.
* The result will end with two CRLF pairs.
* @param o A JSONObject
* @return An HTTP header string.
* @throws JSONException if the object does not contain enough
* information.
*/
public static String toString(JSONObject o) throws JSONException {
Iterator keys = o.keys();
String s;
StringBuffer sb = new StringBuffer();
if (o.has("Status-Code") && o.has("Reason-Phrase")) {
sb.append(o.getString("HTTP-Version"));
sb.append(' ');
sb.append(o.getString("Status-Code"));
sb.append(' ');
sb.append(o.getString("Reason-Phrase"));
} else if (o.has("Method") && o.has("Request-URI")) {
sb.append(o.getString("Method"));
sb.append(' ');
sb.append('"');
sb.append(o.getString("Request-URI"));
sb.append('"');
sb.append(' ');
sb.append(o.getString("HTTP-Version"));
} else {
throw new JSONException("Not enough material for an HTTP header.");
}
sb.append(CRLF);
while (keys.hasNext()) {
s = keys.next().toString();
if (!s.equals("HTTP-Version") && !s.equals("Status-Code") &&
!s.equals("Reason-Phrase") && !s.equals("Method") &&
!s.equals("Request-URI") && !o.isNull(s)) {
sb.append(s);
sb.append(": ");
sb.append(o.getString(s));
sb.append(CRLF);
}
}
sb.append(CRLF);
return sb.toString();
}
}