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
|
/*
* Copyright (C) 2021 The Android Open Source Project
*
* 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.android.libraries.entitlement.http;
import static com.android.libraries.entitlement.ServiceEntitlementException.ERROR_HTTP_STATUS_NOT_SUCCESS;
import static com.android.libraries.entitlement.ServiceEntitlementException.ERROR_MALFORMED_HTTP_RESPONSE;
import static com.android.libraries.entitlement.ServiceEntitlementException.ERROR_SERVER_NOT_CONNECTABLE;
import static com.android.libraries.entitlement.http.HttpConstants.RequestMethod.POST;
import static com.android.libraries.entitlement.utils.DebugUtils.logPii;
import static com.google.common.base.Strings.nullToEmpty;
import static java.nio.charset.StandardCharsets.UTF_8;
import static java.util.concurrent.TimeUnit.SECONDS;
import android.net.Network;
import android.text.TextUtils;
import android.util.Log;
import androidx.annotation.WorkerThread;
import com.android.libraries.entitlement.ServiceEntitlementException;
import com.android.libraries.entitlement.http.HttpConstants.ContentType;
import com.android.libraries.entitlement.utils.StreamUtils;
import com.google.common.collect.ImmutableList;
import com.google.common.net.HttpHeaders;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
/** Implement the HTTP request method according to TS.43 specification. */
public class HttpClient {
private static final String TAG = "ServiceEntitlement";
private HttpURLConnection mConnection;
private boolean mSaveHistory;
private ArrayList<String> mHistory;
public HttpClient(boolean saveHistory) {
mSaveHistory = saveHistory;
mHistory = new ArrayList<>();
}
@WorkerThread
public HttpResponse request(HttpRequest request) throws ServiceEntitlementException {
if (mSaveHistory) {
mHistory.add(request.toString());
}
logPii("HttpClient.request url: " + request.url());
createConnection(request);
logPii("HttpClient.request headers (partial): " + mConnection.getRequestProperties());
try {
if (POST.equals(request.requestMethod())) {
try (OutputStream out = new DataOutputStream(mConnection.getOutputStream())) {
// Android JSON toString() escapes forward-slash with back-slash. It's not
// supported by some vendor and not mandatory in JSON spec. Undo escaping.
String postData = request.postData().toString().replace("\\/", "/");
out.write(postData.getBytes(UTF_8));
logPii("HttpClient.request post data: " + postData);
}
}
mConnection.connect(); // This is to trigger SocketTimeoutException early
HttpResponse response = getHttpResponse(mConnection);
Log.d(TAG, "HttpClient.response : " + response.toShortDebugString());
if (mSaveHistory) {
mHistory.add(response.toString());
}
return response;
} catch (IOException ioe) {
throw new ServiceEntitlementException(
ERROR_HTTP_STATUS_NOT_SUCCESS,
"Connection error stream: "
+ StreamUtils.inputStreamToStringSafe(mConnection.getErrorStream())
+ " IOException: "
+ ioe.toString(),
ioe);
} finally {
closeConnection();
}
}
/**
* Retrieves the history of past HTTP request and responses.
*/
public List<String> getHistory() {
return mHistory;
}
/**
* Clears the history of past HTTP request and responses.
*/
public void clearHistory() {
mHistory.clear();
}
private void createConnection(HttpRequest request) throws ServiceEntitlementException {
try {
URL url = new URL(request.url());
Network network = request.network();
if (network == null) {
mConnection = (HttpURLConnection) url.openConnection();
} else {
mConnection = (HttpURLConnection) network.openConnection(url);
}
// add HTTP headers
for (Map.Entry<String, String> entry : request.requestProperties().entries()) {
mConnection.addRequestProperty(entry.getKey(), entry.getValue());
}
// set parameters
mConnection.setRequestMethod(request.requestMethod());
mConnection.setConnectTimeout((int) SECONDS.toMillis(request.timeoutInSec()));
mConnection.setReadTimeout((int) SECONDS.toMillis(request.timeoutInSec()));
if (POST.equals(request.requestMethod())) {
mConnection.setDoOutput(true);
}
} catch (IOException ioe) {
throw new ServiceEntitlementException(
ERROR_SERVER_NOT_CONNECTABLE, "Configure connection failed!", ioe);
}
}
private void closeConnection() {
if (mConnection != null) {
mConnection.disconnect();
mConnection = null;
}
}
private static HttpResponse getHttpResponse(HttpURLConnection connection)
throws ServiceEntitlementException {
HttpResponse.Builder responseBuilder = HttpResponse.builder();
responseBuilder.setContentType(getContentType(connection));
try {
int responseCode = connection.getResponseCode();
logPii("HttpClient.response headers: " + connection.getHeaderFields());
if (responseCode != HttpURLConnection.HTTP_OK) {
throw new ServiceEntitlementException(ERROR_HTTP_STATUS_NOT_SUCCESS, responseCode,
connection.getHeaderField(HttpHeaders.RETRY_AFTER),
"Invalid connection response");
}
responseBuilder.setResponseCode(responseCode);
responseBuilder.setResponseMessage(nullToEmpty(connection.getResponseMessage()));
} catch (IOException e) {
throw new ServiceEntitlementException(
ERROR_HTTP_STATUS_NOT_SUCCESS, "Read response code failed!", e);
}
responseBuilder.setCookies(getCookies(connection));
try {
String responseBody = readResponse(connection);
logPii("HttpClient.response body: " + responseBody);
responseBuilder.setBody(responseBody);
} catch (IOException e) {
throw new ServiceEntitlementException(
ERROR_MALFORMED_HTTP_RESPONSE, "Read response body/message failed!", e);
}
return responseBuilder.build();
}
private static String readResponse(URLConnection connection) throws IOException {
try (InputStream in = connection.getInputStream()) {
return StreamUtils.inputStreamToStringSafe(in);
}
}
private static int getContentType(URLConnection connection) {
String contentType = connection.getHeaderField(ContentType.NAME);
if (TextUtils.isEmpty(contentType)) {
return ContentType.UNKNOWN;
}
if (contentType.contains("xml")) {
return ContentType.XML;
} else if ("text/vnd.wap.connectivity".equals(contentType)) {
// Workaround that a server vendor uses this type for XML
return ContentType.XML;
} else if (contentType.contains("json")) {
return ContentType.JSON;
}
return ContentType.UNKNOWN;
}
private static List<String> getCookies(URLConnection connection) {
List<String> cookies = connection.getHeaderFields().get(HttpHeaders.SET_COOKIE);
return cookies == null ? ImmutableList.of() : cookies;
}
}
|
