1 /*
2 * Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test
26 * @bug 6299712
27 * @library ../../httptest/
28 * @build HttpCallback TestHttpServer ClosedChannelList HttpTransaction
29 * @run main/othervm B6299712
30 * @summary NullPointerException in sun.net.www.protocol.http.HttpURLConnection.followRedirect
31 */
32
33 import java.net.*;
34 import java.io.*;
35 import java.util.*;
36
37 /*
38 * Test Description:
39 * - main thread run as a http client
40 * - another thread runs a http server, which redirect the first call to "/redirect"
41 * and return '200 OK' for the successive call
42 * - a global ResponseCache instance is installed, which return DeployCacheResponse
43 * for url ends with "/redirect", i.e. the url redirected to by our simple http server,
44 * and null for other url.
45 * - the whole result is that the first call will be served by our simple
46 * http server and is redirected to "/redirect". The successive call will be done
47 * automatically by HttpURLConnection, which will be served by DeployCacheResponse.
48 * The NPE will be thrown on the second round if the bug is there.
49 */
50 public class B6299712 {
51 static SimpleHttpTransaction httpTrans;
52 static TestHttpServer server;
53
54 public static void main(String[] args) throws Exception {
55 ResponseCache.setDefault(new DeployCacheHandler());
56 startHttpServer();
57
58 makeHttpCall();
59 }
60
61 public static void startHttpServer() {
62 try {
63 httpTrans = new SimpleHttpTransaction();
64 server = new TestHttpServer(httpTrans, 1, 10, 0);
65 } catch (IOException e) {
66 e.printStackTrace();
67 }
68 }
69
70 public static void makeHttpCall() {
71 try {
72 System.out.println("http server listen on: " + server.getLocalPort());
73 URL url = new URL("http" , InetAddress.getLocalHost().getHostAddress(),
74 server.getLocalPort(), "/");
75 HttpURLConnection uc = (HttpURLConnection)url.openConnection();
76 System.out.println(uc.getResponseCode());
77 } catch (IOException e) {
78 e.printStackTrace();
79 } finally {
80 server.terminate();
81 }
82 }
83 }
84
85 class SimpleHttpTransaction implements HttpCallback {
86 /*
87 * Our http server which simply redirect first call
88 */
89 public void request(HttpTransaction trans) {
90 try {
91 String path = trans.getRequestURI().getPath();
92 if (path.equals("/")) {
93 // the first call, redirect it
94 String location = "/redirect";
95 trans.addResponseHeader("Location", location);
96 trans.sendResponse(302, "Moved Temporarily");
97 } else {
98 // the second call
99 trans.sendResponse(200, "OK");
100 }
101 } catch (Exception e) {
102 e.printStackTrace();
103 }
104 }
105 }
106
107 class DeployCacheHandler extends java.net.ResponseCache {
108 private boolean inCacheHandler = false;
109 private boolean _downloading = false;
110
111 public synchronized CacheResponse get(final URI uri, String rqstMethod,
112 Map requestHeaders) throws IOException {
113 System.out.println("get!!!: " + uri);
114 try {
115 if (!uri.toString().endsWith("redirect")) {
116 return null;
117 }
118 } catch (Exception e) {
119 e.printStackTrace();
120 }
121
122 return new DeployCacheResponse(new EmptyInputStream(), new HashMap());
123 }
124
125 public synchronized CacheRequest put(URI uri, URLConnection conn)
126 throws IOException {
127 URL url = uri.toURL();
128 return new DeployCacheRequest(url, conn);
129
130 }
131 }
132
133 class DeployCacheRequest extends java.net.CacheRequest {
134
135 private URL _url;
136 private URLConnection _conn;
137 private boolean _downloading = false;
138
139 DeployCacheRequest(URL url, URLConnection conn) {
140 _url = url;
141 _conn = conn;
142 }
143
144 public void abort() {
145
146 }
147
148 public OutputStream getBody() throws IOException {
149
150 return null;
151 }
152 }
153
154 class DeployCacheResponse extends java.net.CacheResponse {
155 protected InputStream is;
156 protected Map headers;
157
158 DeployCacheResponse(InputStream is, Map headers) {
159 this.is = is;
160 this.headers = headers;
161 }
162
163 public InputStream getBody() throws IOException {
164 return is;
165 }
166
167 public Map getHeaders() throws IOException {
168 return headers;
169 }
170 }
171
172 class EmptyInputStream extends InputStream {
173 public EmptyInputStream() {
174 }
175
176 public int read()
177 throws IOException {
178 return -1;
179 }
180 }