/*

* File: HTTP.java

* Author: JSON.org

*/

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.util.Iterator;

// TODO: Auto-generated Javadoc

/**

* Convert an HTTP header to a JSONObject and back.

*

* @author JSON.org

* @version 2010-12-24

*/

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

* Thrown when things are amiss.

*/

public static JSONObject toJSONObject(String string) throws JSONException

{

JSONObject jo = new JSONObject();

HTTPTokener x = new HTTPTokener(string);

String token;

token = x.nextToken();

if (token.toUpperCase().startsWith("HTTP"))

{

// Response

jo.put("HTTP-Version", token);

jo.put("Status-Code", x.nextToken());

jo.put("Reason-Phrase", x.nextTo('\0'));

x.next();

} else

{

// Request

jo.put("Method", token);

jo.put("Request-URI", x.nextToken());

jo.put("HTTP-Version", x.nextToken());

}

// Fields

while (x.more())

{

String name = x.nextTo(": ");

x.next(':');

x.next(' ');

jo.put(name, x.nextTo('\0'));

x.next();

}

return jo;

}

/**

* 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 jo

* A JSONObject

* @return An HTTP header string.

* @throws JSONException

* if the object does not contain enough information.

*/

public static String toString(JSONObject jo) throws JSONException

{

Iterator<String> keys = jo.keys();

String string;

StringBuffer sb = new StringBuffer();

if (jo.has("Status-Code") && jo.has("Reason-Phrase"))

{

sb.append(jo.getString("HTTP-Version"));

sb.append(' ');

sb.append(jo.getString("Status-Code"));

sb.append(' ');

sb.append(jo.getString("Reason-Phrase"));

} else if (jo.has("Method") && jo.has("Request-URI"))

{

sb.append(jo.getString("Method"));

sb.append(' ');

sb.append('"');

sb.append(jo.getString("Request-URI"));

sb.append('"');

sb.append(' ');

sb.append(jo.getString("HTTP-Version"));

} else

{

throw new JSONException("Not enough material for an HTTP header.");

}

sb.append(CRLF);

while (keys.hasNext())

{

string = keys.next().toString();

if (!string.equals("HTTP-Version") && !string.equals("Status-Code")

&& !string.equals("Reason-Phrase")

&& !string.equals("Method")

&& !string.equals("Request-URI")

&& !jo.isNull(string))

{

sb.append(string);

sb.append(": ");

sb.append(jo.getString(string));

sb.append(CRLF);

}

}

sb.append(CRLF);

return sb.toString();

}

}