1package eu.siacs.conversations.http;
2
3import static eu.siacs.conversations.utils.Random.SECURE_RANDOM;
4
5import android.os.Build;
6import android.util.Log;
7
8import org.apache.http.conn.ssl.StrictHostnameVerifier;
9
10import java.io.IOException;
11import java.io.InputStream;
12import java.net.InetAddress;
13import java.net.InetSocketAddress;
14import java.net.Proxy;
15import java.net.UnknownHostException;
16import java.security.KeyManagementException;
17import java.security.NoSuchAlgorithmException;
18import java.util.ArrayList;
19import java.util.List;
20import java.util.concurrent.Executor;
21import java.util.concurrent.Executors;
22import java.util.concurrent.TimeUnit;
23
24import javax.net.ssl.SSLSocketFactory;
25import javax.net.ssl.X509TrustManager;
26
27import eu.siacs.conversations.BuildConfig;
28import eu.siacs.conversations.Config;
29import eu.siacs.conversations.entities.Account;
30import eu.siacs.conversations.entities.Message;
31import eu.siacs.conversations.services.AbstractConnectionManager;
32import eu.siacs.conversations.services.XmppConnectionService;
33import eu.siacs.conversations.utils.TLSSocketFactory;
34import okhttp3.HttpUrl;
35import okhttp3.OkHttpClient;
36import okhttp3.Request;
37import okhttp3.ResponseBody;
38
39public class HttpConnectionManager extends AbstractConnectionManager {
40
41 private final List<HttpDownloadConnection> downloadConnections = new ArrayList<>();
42 private final List<HttpUploadConnection> uploadConnections = new ArrayList<>();
43
44 public static final Executor EXECUTOR = Executors.newFixedThreadPool(4);
45
46 public static final OkHttpClient OK_HTTP_CLIENT;
47
48 static {
49 OK_HTTP_CLIENT = new OkHttpClient.Builder()
50 .addInterceptor(chain -> {
51 final Request original = chain.request();
52 final Request modified = original.newBuilder()
53 .header("User-Agent", getUserAgent())
54 .build();
55 return chain.proceed(modified);
56 })
57 .build();
58 }
59
60
61 public static String getUserAgent() {
62 return String.format("%s/%s", BuildConfig.APP_NAME, BuildConfig.VERSION_NAME);
63 }
64
65 public HttpConnectionManager(XmppConnectionService service) {
66 super(service);
67 }
68
69 public static Proxy getProxy() {
70 final InetAddress localhost;
71 try {
72 localhost = InetAddress.getByAddress(new byte[]{127, 0, 0, 1});
73 } catch (final UnknownHostException e) {
74 throw new IllegalStateException(e);
75 }
76 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
77 return new Proxy(Proxy.Type.SOCKS, new InetSocketAddress(localhost, 9050));
78 } else {
79 return new Proxy(Proxy.Type.HTTP, new InetSocketAddress(localhost, 8118));
80 }
81 }
82
83 public void createNewDownloadConnection(Message message) {
84 this.createNewDownloadConnection(message, false);
85 }
86
87 public void createNewDownloadConnection(final Message message, boolean interactive) {
88 synchronized (this.downloadConnections) {
89 for (HttpDownloadConnection connection : this.downloadConnections) {
90 if (connection.getMessage() == message) {
91 Log.d(Config.LOGTAG, message.getConversation().getAccount().getJid().asBareJid() + ": download already in progress");
92 return;
93 }
94 }
95 final HttpDownloadConnection connection = new HttpDownloadConnection(message, this);
96 connection.init(interactive);
97 this.downloadConnections.add(connection);
98 }
99 }
100
101 public void createNewUploadConnection(final Message message, boolean delay) {
102 synchronized (this.uploadConnections) {
103 for (HttpUploadConnection connection : this.uploadConnections) {
104 if (connection.getMessage() == message) {
105 Log.d(Config.LOGTAG, message.getConversation().getAccount().getJid().asBareJid() + ": upload already in progress");
106 return;
107 }
108 }
109 HttpUploadConnection connection = new HttpUploadConnection(message, Method.determine(message.getConversation().getAccount()), this);
110 connection.init(delay);
111 this.uploadConnections.add(connection);
112 }
113 }
114
115 void finishConnection(HttpDownloadConnection connection) {
116 synchronized (this.downloadConnections) {
117 this.downloadConnections.remove(connection);
118 }
119 }
120
121 void finishUploadConnection(HttpUploadConnection httpUploadConnection) {
122 synchronized (this.uploadConnections) {
123 this.uploadConnections.remove(httpUploadConnection);
124 }
125 }
126
127 OkHttpClient buildHttpClient(final HttpUrl url, final Account account, boolean interactive) {
128 return buildHttpClient(url, account, 30, interactive);
129 }
130
131 OkHttpClient buildHttpClient(final HttpUrl url, final Account account, int readTimeout, boolean interactive) {
132 final String slotHostname = url.host();
133 final boolean onionSlot = slotHostname.endsWith(".onion");
134 final OkHttpClient.Builder builder = newBuilder(mXmppConnectionService.useTorToConnect() || account.isOnion() || onionSlot);
135 builder.readTimeout(readTimeout, TimeUnit.SECONDS);
136 setupTrustManager(builder, interactive);
137 return builder.build();
138 }
139
140 private void setupTrustManager(final OkHttpClient.Builder builder, final boolean interactive) {
141 final X509TrustManager trustManager;
142 if (interactive) {
143 trustManager = mXmppConnectionService.getMemorizingTrustManager().getInteractive();
144 } else {
145 trustManager = mXmppConnectionService.getMemorizingTrustManager().getNonInteractive();
146 }
147 try {
148 final SSLSocketFactory sf = new TLSSocketFactory(new X509TrustManager[]{trustManager}, SECURE_RANDOM);
149 builder.sslSocketFactory(sf, trustManager);
150 builder.hostnameVerifier(new StrictHostnameVerifier());
151 } catch (final KeyManagementException | NoSuchAlgorithmException ignored) {
152 }
153 }
154
155 public static OkHttpClient.Builder newBuilder(final boolean tor) {
156 final OkHttpClient.Builder builder = OK_HTTP_CLIENT.newBuilder();
157 builder.writeTimeout(30, TimeUnit.SECONDS);
158 builder.readTimeout(30, TimeUnit.SECONDS);
159 if (tor) {
160 builder.proxy(HttpConnectionManager.getProxy()).build();
161 }
162 return builder;
163 }
164
165 public static InputStream open(final String url, final boolean tor) throws IOException {
166 return open(HttpUrl.get(url), tor);
167 }
168
169 public static InputStream open(final HttpUrl httpUrl, final boolean tor) throws IOException {
170 final OkHttpClient client = newBuilder(tor).build();
171 final Request request = new Request.Builder().get().url(httpUrl).build();
172 final ResponseBody body = client.newCall(request).execute().body();
173 if (body == null) {
174 throw new IOException("No response body found");
175 }
176 return body.byteStream();
177 }
178}