1package eu.siacs.conversations.http;
2
3import android.content.Intent;
4import android.net.Uri;
5import android.os.SystemClock;
6import android.util.Log;
7
8import java.io.BufferedInputStream;
9import java.io.IOException;
10import java.io.OutputStream;
11import java.net.HttpURLConnection;
12import java.net.MalformedURLException;
13import java.net.URL;
14import java.util.Arrays;
15
16import javax.net.ssl.HttpsURLConnection;
17import javax.net.ssl.SSLHandshakeException;
18
19import eu.siacs.conversations.Config;
20import eu.siacs.conversations.R;
21import eu.siacs.conversations.entities.DownloadableFile;
22import eu.siacs.conversations.entities.Message;
23import eu.siacs.conversations.entities.Transferable;
24import eu.siacs.conversations.services.XmppConnectionService;
25import eu.siacs.conversations.utils.CryptoHelper;
26
27public class HttpDownloadConnection implements Transferable {
28
29 private HttpConnectionManager mHttpConnectionManager;
30 private XmppConnectionService mXmppConnectionService;
31
32 private URL mUrl;
33 private Message message;
34 private DownloadableFile file;
35 private int mStatus = Transferable.STATUS_UNKNOWN;
36 private boolean acceptedAutomatically = false;
37 private int mProgress = 0;
38 private long mLastGuiRefresh = 0;
39
40 public HttpDownloadConnection(HttpConnectionManager manager) {
41 this.mHttpConnectionManager = manager;
42 this.mXmppConnectionService = manager.getXmppConnectionService();
43 }
44
45 @Override
46 public boolean start() {
47 if (mXmppConnectionService.hasInternetConnection()) {
48 if (this.mStatus == STATUS_OFFER_CHECK_FILESIZE) {
49 checkFileSize(true);
50 } else {
51 new Thread(new FileDownloader(true)).start();
52 }
53 return true;
54 } else {
55 return false;
56 }
57 }
58
59 public void init(Message message) {
60 init(message, false);
61 }
62
63 public void init(Message message, boolean interactive) {
64 this.message = message;
65 this.message.setTransferable(this);
66 try {
67 mUrl = new URL(message.getBody());
68 String[] parts = mUrl.getPath().toLowerCase().split("\\.");
69 String lastPart = parts.length >= 1 ? parts[parts.length - 1] : null;
70 String secondToLast = parts.length >= 2 ? parts[parts.length -2] : null;
71 if ("pgp".equals(lastPart) || "gpg".equals(lastPart)) {
72 this.message.setEncryption(Message.ENCRYPTION_PGP);
73 } else if (message.getEncryption() != Message.ENCRYPTION_OTR
74 && message.getEncryption() != Message.ENCRYPTION_AXOLOTL) {
75 this.message.setEncryption(Message.ENCRYPTION_NONE);
76 }
77 String extension;
78 if (Arrays.asList(VALID_CRYPTO_EXTENSIONS).contains(lastPart)) {
79 extension = secondToLast;
80 } else {
81 extension = lastPart;
82 }
83 message.setRelativeFilePath(message.getUuid()+"."+extension);
84 this.file = mXmppConnectionService.getFileBackend().getFile(message, false);
85 String reference = mUrl.getRef();
86 if (reference != null && reference.length() == 96) {
87 this.file.setKey(CryptoHelper.hexToBytes(reference));
88 }
89
90 if ((this.message.getEncryption() == Message.ENCRYPTION_OTR
91 || this.message.getEncryption() == Message.ENCRYPTION_AXOLOTL)
92 && this.file.getKey() == null) {
93 this.message.setEncryption(Message.ENCRYPTION_NONE);
94 }
95 checkFileSize(interactive);
96 } catch (MalformedURLException e) {
97 this.cancel();
98 }
99 }
100
101 private void checkFileSize(boolean interactive) {
102 new Thread(new FileSizeChecker(interactive)).start();
103 }
104
105 public void cancel() {
106 mHttpConnectionManager.finishConnection(this);
107 message.setTransferable(null);
108 mXmppConnectionService.updateConversationUi();
109 }
110
111 private void finish() {
112 Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
113 intent.setData(Uri.fromFile(file));
114 mXmppConnectionService.sendBroadcast(intent);
115 message.setTransferable(null);
116 mHttpConnectionManager.finishConnection(this);
117 mXmppConnectionService.updateConversationUi();
118 if (acceptedAutomatically) {
119 mXmppConnectionService.getNotificationService().push(message);
120 }
121 }
122
123 private void changeStatus(int status) {
124 this.mStatus = status;
125 mXmppConnectionService.updateConversationUi();
126 }
127
128 private class FileSizeChecker implements Runnable {
129
130 private boolean interactive = false;
131
132 public FileSizeChecker(boolean interactive) {
133 this.interactive = interactive;
134 }
135
136 @Override
137 public void run() {
138 long size;
139 try {
140 size = retrieveFileSize();
141 } catch (SSLHandshakeException e) {
142 changeStatus(STATUS_OFFER_CHECK_FILESIZE);
143 HttpDownloadConnection.this.acceptedAutomatically = false;
144 HttpDownloadConnection.this.mXmppConnectionService.getNotificationService().push(message);
145 return;
146 } catch (IOException e) {
147 Log.d(Config.LOGTAG, "io exception in http file size checker: " + e.getMessage());
148 if (interactive) {
149 mXmppConnectionService.showErrorToastInUi(R.string.file_not_found_on_remote_host);
150 }
151 cancel();
152 return;
153 }
154 file.setExpectedSize(size);
155 if (size <= mHttpConnectionManager.getAutoAcceptFileSize()) {
156 HttpDownloadConnection.this.acceptedAutomatically = true;
157 new Thread(new FileDownloader(interactive)).start();
158 } else {
159 changeStatus(STATUS_OFFER);
160 HttpDownloadConnection.this.acceptedAutomatically = false;
161 HttpDownloadConnection.this.mXmppConnectionService.getNotificationService().push(message);
162 }
163 }
164
165 private long retrieveFileSize() throws IOException {
166 Log.d(Config.LOGTAG,"retrieve file size. interactive:"+String.valueOf(interactive));
167 changeStatus(STATUS_CHECKING);
168 HttpURLConnection connection = (HttpURLConnection) mUrl.openConnection();
169 connection.setRequestMethod("HEAD");
170 if (connection instanceof HttpsURLConnection) {
171 mHttpConnectionManager.setupTrustManager((HttpsURLConnection) connection, interactive);
172 }
173 connection.connect();
174 String contentLength = connection.getHeaderField("Content-Length");
175 if (contentLength == null) {
176 throw new IOException();
177 }
178 try {
179 return Long.parseLong(contentLength, 10);
180 } catch (NumberFormatException e) {
181 throw new IOException();
182 }
183 }
184
185 }
186
187 private class FileDownloader implements Runnable {
188
189 private boolean interactive = false;
190
191 public FileDownloader(boolean interactive) {
192 this.interactive = interactive;
193 }
194
195 @Override
196 public void run() {
197 try {
198 changeStatus(STATUS_DOWNLOADING);
199 download();
200 updateImageBounds();
201 finish();
202 } catch (SSLHandshakeException e) {
203 changeStatus(STATUS_OFFER);
204 } catch (IOException e) {
205 mXmppConnectionService.showErrorToastInUi(R.string.file_not_found_on_remote_host);
206 cancel();
207 }
208 }
209
210 private void download() throws SSLHandshakeException, IOException {
211 HttpURLConnection connection = (HttpURLConnection) mUrl.openConnection();
212 if (connection instanceof HttpsURLConnection) {
213 mHttpConnectionManager.setupTrustManager((HttpsURLConnection) connection, interactive);
214 }
215 connection.connect();
216 BufferedInputStream is = new BufferedInputStream(connection.getInputStream());
217 file.getParentFile().mkdirs();
218 file.createNewFile();
219 OutputStream os = file.createOutputStream();
220 if (os == null) {
221 throw new IOException();
222 }
223 long transmitted = 0;
224 long expected = file.getExpectedSize();
225 int count = -1;
226 byte[] buffer = new byte[1024];
227 while ((count = is.read(buffer)) != -1) {
228 transmitted += count;
229 os.write(buffer, 0, count);
230 updateProgress((int) ((((double) transmitted) / expected) * 100));
231 }
232 os.flush();
233 os.close();
234 is.close();
235 }
236
237 private void updateImageBounds() {
238 message.setType(Message.TYPE_FILE);
239 mXmppConnectionService.getFileBackend().updateFileParams(message, mUrl);
240 mXmppConnectionService.updateMessage(message);
241 }
242
243 }
244
245 public void updateProgress(int i) {
246 this.mProgress = i;
247 mXmppConnectionService.updateConversationUi();
248 }
249
250 @Override
251 public int getStatus() {
252 return this.mStatus;
253 }
254
255 @Override
256 public long getFileSize() {
257 if (this.file != null) {
258 return this.file.getExpectedSize();
259 } else {
260 return 0;
261 }
262 }
263
264 @Override
265 public int getProgress() {
266 return this.mProgress;
267 }
268}