1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
/*
* Copyright 2011 gitblit.com.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.gitblit.utils;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.lang.reflect.Type;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.security.SecureRandom;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.Collection;
import java.util.Map;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import com.gitblit.models.RepositoryModel;
import com.gitblit.models.UserModel;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.reflect.TypeToken;
/**
* Utility methods for gson calls to a Gitblit server.
*
* @author James Moger
*
*/
public class JsonUtils {
public static final String CHARSET;
public static final Type REPOSITORIES_TYPE = new TypeToken<Map<String, RepositoryModel>>() {
}.getType();
public static final Type USERS_TYPE = new TypeToken<Collection<UserModel>>() {
}.getType();
private static final SSLContext SSL_CONTEXT;
private static final DummyHostnameVerifier HOSTNAME_VERIFIER;
static {
SSLContext context = null;
try {
context = SSLContext.getInstance("SSL");
context.init(null, new TrustManager[] { new DummyTrustManager() }, new SecureRandom());
} catch (Throwable t) {
t.printStackTrace();
}
SSL_CONTEXT = context;
HOSTNAME_VERIFIER = new DummyHostnameVerifier();
CHARSET = "UTF-8";
}
/**
* Creates JSON from the specified object.
*
* @param o
* @return json
*/
public static String toJsonString(Object o) {
Gson gson = new GsonBuilder().setPrettyPrinting().create();
String json = gson.toJson(o);
return json;
}
/**
* Convert a json string to an object of the specified type.
*
* @param json
* @param clazz
* @return an object
*/
public static <X> X fromJsonString(String json, Class<X> clazz) {
Gson gson = new Gson();
return gson.fromJson(json, clazz);
}
/**
* Convert a json string to an object of the specified type.
*
* @param json
* @param clazz
* @return an object
*/
public static <X> X fromJsonString(String json, Type type) {
Gson gson = new Gson();
return gson.fromJson(json, type);
}
/**
* Reads a gson object from the specified url.
*
* @param url
* @param type
* @return
* @throws Exception
*/
public static <X> X retrieveJson(String url, Type type) throws Exception {
String json = retrieveJsonString(url);
if (StringUtils.isEmpty(json)) {
return null;
}
Gson gson = new Gson();
return gson.fromJson(json, type);
}
/**
* Retrieves a JSON message.
*
* @param url
* @return the JSON message as a string
* @throws Exception
*/
public static String retrieveJsonString(String url) throws Exception {
URL urlObject = new URL(url);
URLConnection conn = urlObject.openConnection();
conn.setRequestProperty("Accept-Charset", CHARSET);
conn.setUseCaches(false);
conn.setDoInput(true);
if (conn instanceof HttpsURLConnection) {
HttpsURLConnection secureConn = (HttpsURLConnection) conn;
secureConn.setSSLSocketFactory(SSL_CONTEXT.getSocketFactory());
secureConn.setHostnameVerifier(HOSTNAME_VERIFIER);
}
InputStream is = conn.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(is, CHARSET));
StringBuilder json = new StringBuilder();
char[] buffer = new char[4096];
int len = 0;
while ((len = reader.read(buffer)) > -1) {
json.append(buffer, 0, len);
}
is.close();
return json.toString();
}
/**
* Sends a JSON message.
*
* @param url
* the url to write to
* @param json
* the json message to send
* @return the http request result code
* @throws Exception
*/
public static int sendJsonString(String url, String json) throws Exception {
byte[] jsonBytes = json.getBytes(CHARSET);
URL urlObject = new URL(url);
URLConnection conn = urlObject.openConnection();
conn.setRequestProperty("Content-Type", "text/plain;charset=" + CHARSET);
conn.setRequestProperty("Content-Length", "" + jsonBytes.length);
conn.setUseCaches(false);
conn.setDoOutput(true);
if (conn instanceof HttpsURLConnection) {
HttpsURLConnection secureConn = (HttpsURLConnection) conn;
secureConn.setSSLSocketFactory(SSL_CONTEXT.getSocketFactory());
secureConn.setHostnameVerifier(HOSTNAME_VERIFIER);
}
// write json body
OutputStream os = conn.getOutputStream();
os.write(jsonBytes);
os.close();
int status = ((HttpURLConnection) conn).getResponseCode();
return status;
}
/**
* DummyTrustManager trusts all certificates.
*/
private static class DummyTrustManager implements X509TrustManager {
@Override
public void checkClientTrusted(X509Certificate[] certs, String authType)
throws CertificateException {
}
@Override
public void checkServerTrusted(X509Certificate[] certs, String authType)
throws CertificateException {
}
@Override
public X509Certificate[] getAcceptedIssuers() {
return null;
}
}
/**
* Trusts all hostnames from a certificate, including self-signed certs.
*/
private static class DummyHostnameVerifier implements HostnameVerifier {
@Override
public boolean verify(String hostname, SSLSession session) {
return true;
}
}
}
|
