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package eu.siacs.conversations.http;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLHandshakeException;
import javax.net.ssl.X509TrustManager;
import android.content.Intent;
import android.graphics.BitmapFactory;
import android.net.Uri;
import eu.siacs.conversations.entities.Downloadable;
import eu.siacs.conversations.entities.DownloadableFile;
import eu.siacs.conversations.entities.Message;
import eu.siacs.conversations.services.XmppConnectionService;
public class HttpConnection implements Downloadable {
private HttpConnectionManager mHttpConnectionManager;
private XmppConnectionService mXmppConnectionService;
private URL mUrl;
private Message message;
private DownloadableFile file;
private int mStatus = Downloadable.STATUS_UNKNOWN;
private boolean mAutostart = true;
public HttpConnection(HttpConnectionManager manager) {
this.mHttpConnectionManager = manager;
this.mXmppConnectionService = manager.getXmppConnectionService();
}
@Override
public boolean start() {
if (mXmppConnectionService.hasInternetConnection()) {
if (this.mStatus == STATUS_OFFER_CHECK_FILESIZE) {
checkFileSize(true);
} else {
changeStatus(STATUS_DOWNLOADING);
new Thread(new FileDownloader()).start();
}
return true;
} else {
return false;
}
}
public void init(Message message) {
this.message = message;
this.message.setDownloadable(this);
try {
mUrl = new URL(message.getBody());
this.file = mXmppConnectionService.getFileBackend().getFile(
message, false);
this.mAutostart = true;
checkFileSize(false);
} catch (MalformedURLException e) {
this.cancel();
}
}
private void checkFileSize(boolean interactive) {
changeStatus(STATUS_CHECKING);
new Thread(new FileSizeChecker(interactive)).start();
}
public void cancel() {
mHttpConnectionManager.finishConnection(this);
message.setDownloadable(null);
mXmppConnectionService.updateConversationUi();
}
private void finish() {
Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
intent.setData(Uri.fromFile(file));
mXmppConnectionService.sendBroadcast(intent);
message.setDownloadable(null);
mHttpConnectionManager.finishConnection(this);
}
private void changeStatus(int status) {
this.mStatus = status;
mXmppConnectionService.updateConversationUi();
}
private void setupTrustManager(HttpsURLConnection connection,
boolean interactive) {
X509TrustManager trustManager;
if (interactive) {
trustManager = mXmppConnectionService.getMemorizingTrustManager();
} else {
trustManager = mXmppConnectionService.getMemorizingTrustManager()
.getNonInteractive();
}
try {
SSLContext sc = SSLContext.getInstance("TLS");
sc.init(null, new X509TrustManager[] { trustManager },
mXmppConnectionService.getRNG());
connection.setSSLSocketFactory(sc.getSocketFactory());
} catch (KeyManagementException e) {
return;
} catch (NoSuchAlgorithmException e) {
return;
}
}
private class FileSizeChecker implements Runnable {
private boolean interactive = false;
public FileSizeChecker(boolean interactive) {
this.interactive = interactive;
}
@Override
public void run() {
long size;
try {
size = retrieveFileSize();
} catch (SSLHandshakeException e) {
changeStatus(STATUS_OFFER_CHECK_FILESIZE);
return;
} catch (IOException e) {
cancel();
return;
}
file.setExpectedSize(size);
if (size <= mHttpConnectionManager.getAutoAcceptFileSize()
&& mAutostart) {
start();
} else {
changeStatus(STATUS_OFFER);
}
}
private long retrieveFileSize() throws IOException,
SSLHandshakeException {
HttpURLConnection connection = (HttpURLConnection) mUrl
.openConnection();
connection.setRequestMethod("HEAD");
if (connection instanceof HttpsURLConnection) {
setupTrustManager((HttpsURLConnection) connection, interactive);
}
connection.connect();
String contentLength = connection.getHeaderField("Content-Length");
if (contentLength == null) {
throw new IOException();
}
try {
return Long.parseLong(contentLength, 10);
} catch (NumberFormatException e) {
throw new IOException();
}
}
}
private class FileDownloader implements Runnable {
@Override
public void run() {
try {
download();
updateImageBounds();
finish();
} catch (IOException e) {
cancel();
}
}
private void download() throws IOException {
HttpURLConnection connection = (HttpURLConnection) mUrl
.openConnection();
if (connection instanceof HttpsURLConnection) {
setupTrustManager((HttpsURLConnection) connection, true);
}
BufferedInputStream is = new BufferedInputStream(
connection.getInputStream());
OutputStream os = file.createOutputStream();
int count = -1;
byte[] buffer = new byte[1024];
while ((count = is.read(buffer)) != -1) {
os.write(buffer, 0, count);
}
os.flush();
os.close();
is.close();
}
private void updateImageBounds() {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(file.getAbsolutePath(), options);
int imageHeight = options.outHeight;
int imageWidth = options.outWidth;
message.setBody(mUrl.toString() + "," + file.getSize() + ','
+ imageWidth + ',' + imageHeight);
message.setType(Message.TYPE_IMAGE);
mXmppConnectionService.updateMessage(message);
}
}
@Override
public int getStatus() {
return this.mStatus;
}
@Override
public long getFileSize() {
if (this.file != null) {
return this.file.getExpectedSize();
} else {
return 0;
}
}
}
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