Jerome Poichet | 7c99785 | 2014-05-20 10:50:05 -0700 | [diff] [blame^] | 1 | package com.google.polo.json; |
| 2 | |
| 3 | /* |
| 4 | Copyright (c) 2002 JSON.org |
| 5 | |
| 6 | Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | of this software and associated documentation files (the "Software"), to deal |
| 8 | in the Software without restriction, including without limitation the rights |
| 9 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | copies of the Software, and to permit persons to whom the Software is |
| 11 | furnished to do so, subject to the following conditions: |
| 12 | |
| 13 | The above copyright notice and this permission notice shall be included in all |
| 14 | copies or substantial portions of the Software. |
| 15 | |
| 16 | The Software shall be used for Good, not Evil. |
| 17 | |
| 18 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 19 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 20 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 21 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 22 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 23 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 24 | SOFTWARE. |
| 25 | */ |
| 26 | |
| 27 | import java.util.Iterator; |
| 28 | |
| 29 | /** |
| 30 | * Convert an HTTP header to a JSONObject and back. |
| 31 | * @author JSON.org |
| 32 | * @version 2008-09-18 |
| 33 | */ |
| 34 | public class HTTP { |
| 35 | |
| 36 | /** Carriage return/line feed. */ |
| 37 | public static final String CRLF = "\r\n"; |
| 38 | |
| 39 | /** |
| 40 | * Convert an HTTP header string into a JSONObject. It can be a request |
| 41 | * header or a response header. A request header will contain |
| 42 | * <pre>{ |
| 43 | * Method: "POST" (for example), |
| 44 | * "Request-URI": "/" (for example), |
| 45 | * "HTTP-Version": "HTTP/1.1" (for example) |
| 46 | * }</pre> |
| 47 | * A response header will contain |
| 48 | * <pre>{ |
| 49 | * "HTTP-Version": "HTTP/1.1" (for example), |
| 50 | * "Status-Code": "200" (for example), |
| 51 | * "Reason-Phrase": "OK" (for example) |
| 52 | * }</pre> |
| 53 | * In addition, the other parameters in the header will be captured, using |
| 54 | * the HTTP field names as JSON names, so that <pre> |
| 55 | * Date: Sun, 26 May 2002 18:06:04 GMT |
| 56 | * Cookie: Q=q2=PPEAsg--; B=677gi6ouf29bn&b=2&f=s |
| 57 | * Cache-Control: no-cache</pre> |
| 58 | * become |
| 59 | * <pre>{... |
| 60 | * Date: "Sun, 26 May 2002 18:06:04 GMT", |
| 61 | * Cookie: "Q=q2=PPEAsg--; B=677gi6ouf29bn&b=2&f=s", |
| 62 | * "Cache-Control": "no-cache", |
| 63 | * ...}</pre> |
| 64 | * It does no further checking or conversion. It does not parse dates. |
| 65 | * It does not do '%' transforms on URLs. |
| 66 | * @param string An HTTP header string. |
| 67 | * @return A JSONObject containing the elements and attributes |
| 68 | * of the XML string. |
| 69 | * @throws JSONException |
| 70 | */ |
| 71 | public static JSONObject toJSONObject(String string) throws JSONException { |
| 72 | JSONObject o = new JSONObject(); |
| 73 | HTTPTokener x = new HTTPTokener(string); |
| 74 | String t; |
| 75 | |
| 76 | t = x.nextToken(); |
| 77 | if (t.toUpperCase().startsWith("HTTP")) { |
| 78 | |
| 79 | // Response |
| 80 | |
| 81 | o.put("HTTP-Version", t); |
| 82 | o.put("Status-Code", x.nextToken()); |
| 83 | o.put("Reason-Phrase", x.nextTo('\0')); |
| 84 | x.next(); |
| 85 | |
| 86 | } else { |
| 87 | |
| 88 | // Request |
| 89 | |
| 90 | o.put("Method", t); |
| 91 | o.put("Request-URI", x.nextToken()); |
| 92 | o.put("HTTP-Version", x.nextToken()); |
| 93 | } |
| 94 | |
| 95 | // Fields |
| 96 | |
| 97 | while (x.more()) { |
| 98 | String name = x.nextTo(':'); |
| 99 | x.next(':'); |
| 100 | o.put(name, x.nextTo('\0')); |
| 101 | x.next(); |
| 102 | } |
| 103 | return o; |
| 104 | } |
| 105 | |
| 106 | |
| 107 | /** |
| 108 | * Convert a JSONObject into an HTTP header. A request header must contain |
| 109 | * <pre>{ |
| 110 | * Method: "POST" (for example), |
| 111 | * "Request-URI": "/" (for example), |
| 112 | * "HTTP-Version": "HTTP/1.1" (for example) |
| 113 | * }</pre> |
| 114 | * A response header must contain |
| 115 | * <pre>{ |
| 116 | * "HTTP-Version": "HTTP/1.1" (for example), |
| 117 | * "Status-Code": "200" (for example), |
| 118 | * "Reason-Phrase": "OK" (for example) |
| 119 | * }</pre> |
| 120 | * Any other members of the JSONObject will be output as HTTP fields. |
| 121 | * The result will end with two CRLF pairs. |
| 122 | * @param o A JSONObject |
| 123 | * @return An HTTP header string. |
| 124 | * @throws JSONException if the object does not contain enough |
| 125 | * information. |
| 126 | */ |
| 127 | public static String toString(JSONObject o) throws JSONException { |
| 128 | Iterator keys = o.keys(); |
| 129 | String s; |
| 130 | StringBuffer sb = new StringBuffer(); |
| 131 | if (o.has("Status-Code") && o.has("Reason-Phrase")) { |
| 132 | sb.append(o.getString("HTTP-Version")); |
| 133 | sb.append(' '); |
| 134 | sb.append(o.getString("Status-Code")); |
| 135 | sb.append(' '); |
| 136 | sb.append(o.getString("Reason-Phrase")); |
| 137 | } else if (o.has("Method") && o.has("Request-URI")) { |
| 138 | sb.append(o.getString("Method")); |
| 139 | sb.append(' '); |
| 140 | sb.append('"'); |
| 141 | sb.append(o.getString("Request-URI")); |
| 142 | sb.append('"'); |
| 143 | sb.append(' '); |
| 144 | sb.append(o.getString("HTTP-Version")); |
| 145 | } else { |
| 146 | throw new JSONException("Not enough material for an HTTP header."); |
| 147 | } |
| 148 | sb.append(CRLF); |
| 149 | while (keys.hasNext()) { |
| 150 | s = keys.next().toString(); |
| 151 | if (!s.equals("HTTP-Version") && !s.equals("Status-Code") && |
| 152 | !s.equals("Reason-Phrase") && !s.equals("Method") && |
| 153 | !s.equals("Request-URI") && !o.isNull(s)) { |
| 154 | sb.append(s); |
| 155 | sb.append(": "); |
| 156 | sb.append(o.getString(s)); |
| 157 | sb.append(CRLF); |
| 158 | } |
| 159 | } |
| 160 | sb.append(CRLF); |
| 161 | return sb.toString(); |
| 162 | } |
| 163 | } |