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package eu.siacs.conversations.http;
import android.content.Intent;
import android.net.Uri;
import android.util.Log;
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.util.Arrays;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLHandshakeException;
import eu.siacs.conversations.Config;
import eu.siacs.conversations.R;
import eu.siacs.conversations.entities.DownloadableFile;
import eu.siacs.conversations.entities.Message;
import eu.siacs.conversations.entities.Transferable;
import eu.siacs.conversations.persistance.FileBackend;
import eu.siacs.conversations.services.AbstractConnectionManager;
import eu.siacs.conversations.services.XmppConnectionService;
import eu.siacs.conversations.utils.CryptoHelper;
public class HttpDownloadConnection implements Transferable {
private HttpConnectionManager mHttpConnectionManager;
private XmppConnectionService mXmppConnectionService;
private URL mUrl;
private Message message;
private DownloadableFile file;
private int mStatus = Transferable.STATUS_UNKNOWN;
private boolean acceptedAutomatically = false;
private int mProgress = 0;
public HttpDownloadConnection(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 {
new Thread(new FileDownloader(true)).start();
}
return true;
} else {
return false;
}
}
public void init(Message message) {
init(message, false);
}
public void init(Message message, boolean interactive) {
this.message = message;
this.message.setTransferable(this);
try {
mUrl = new URL(message.getBody());
String[] parts = mUrl.getPath().toLowerCase().split("\\.");
String lastPart = parts.length >= 1 ? parts[parts.length - 1] : null;
String secondToLast = parts.length >= 2 ? parts[parts.length -2] : null;
if ("pgp".equals(lastPart) || "gpg".equals(lastPart)) {
this.message.setEncryption(Message.ENCRYPTION_PGP);
} else if (message.getEncryption() != Message.ENCRYPTION_OTR
&& message.getEncryption() != Message.ENCRYPTION_AXOLOTL) {
this.message.setEncryption(Message.ENCRYPTION_NONE);
}
String extension;
if (Arrays.asList(VALID_CRYPTO_EXTENSIONS).contains(lastPart)) {
extension = secondToLast;
} else {
extension = lastPart;
}
message.setRelativeFilePath(message.getUuid()+"."+extension);
this.file = mXmppConnectionService.getFileBackend().getFile(message, false);
String reference = mUrl.getRef();
if (reference != null && reference.length() == 96) {
this.file.setKeyAndIv(CryptoHelper.hexToBytes(reference));
}
if ((this.message.getEncryption() == Message.ENCRYPTION_OTR
|| this.message.getEncryption() == Message.ENCRYPTION_AXOLOTL)
&& this.file.getKey() == null) {
this.message.setEncryption(Message.ENCRYPTION_NONE);
}
checkFileSize(interactive);
} catch (MalformedURLException e) {
this.cancel();
}
}
private void checkFileSize(boolean interactive) {
new Thread(new FileSizeChecker(interactive)).start();
}
public void cancel() {
mHttpConnectionManager.finishConnection(this);
message.setTransferable(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.setTransferable(null);
mHttpConnectionManager.finishConnection(this);
mXmppConnectionService.updateConversationUi();
if (acceptedAutomatically) {
mXmppConnectionService.getNotificationService().push(message);
}
}
private void changeStatus(int status) {
this.mStatus = status;
mXmppConnectionService.updateConversationUi();
}
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);
HttpDownloadConnection.this.acceptedAutomatically = false;
HttpDownloadConnection.this.mXmppConnectionService.getNotificationService().push(message);
return;
} catch (IOException e) {
Log.d(Config.LOGTAG, "io exception in http file size checker: " + e.getMessage());
if (interactive) {
mXmppConnectionService.showErrorToastInUi(R.string.file_not_found_on_remote_host);
}
cancel();
return;
}
file.setExpectedSize(size);
if (size <= mHttpConnectionManager.getAutoAcceptFileSize()) {
HttpDownloadConnection.this.acceptedAutomatically = true;
new Thread(new FileDownloader(interactive)).start();
} else {
changeStatus(STATUS_OFFER);
HttpDownloadConnection.this.acceptedAutomatically = false;
HttpDownloadConnection.this.mXmppConnectionService.getNotificationService().push(message);
}
}
private long retrieveFileSize() throws IOException {
Log.d(Config.LOGTAG,"retrieve file size. interactive:"+String.valueOf(interactive));
changeStatus(STATUS_CHECKING);
HttpURLConnection connection = (HttpURLConnection) mUrl.openConnection();
connection.setRequestMethod("HEAD");
if (connection instanceof HttpsURLConnection) {
mHttpConnectionManager.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 {
private boolean interactive = false;
private OutputStream os;
public FileDownloader(boolean interactive) {
this.interactive = interactive;
}
@Override
public void run() {
try {
changeStatus(STATUS_DOWNLOADING);
download();
updateImageBounds();
finish();
} catch (SSLHandshakeException e) {
FileBackend.close(os);
changeStatus(STATUS_OFFER);
} catch (IOException e) {
FileBackend.close(os);
mXmppConnectionService.showErrorToastInUi(R.string.file_not_found_on_remote_host);
cancel();
}
}
private void download() throws IOException {
HttpURLConnection connection = (HttpURLConnection) mUrl.openConnection();
if (connection instanceof HttpsURLConnection) {
mHttpConnectionManager.setupTrustManager((HttpsURLConnection) connection, interactive);
}
connection.connect();
BufferedInputStream is = new BufferedInputStream(connection.getInputStream());
file.getParentFile().mkdirs();
file.createNewFile();
os = AbstractConnectionManager.createOutputStream(file,true);
long transmitted = 0;
long expected = file.getExpectedSize();
int count = -1;
byte[] buffer = new byte[1024];
while ((count = is.read(buffer)) != -1) {
transmitted += count;
os.write(buffer, 0, count);
updateProgress((int) ((((double) transmitted) / expected) * 100));
}
os.flush();
os.close();
is.close();
}
private void updateImageBounds() {
message.setType(Message.TYPE_FILE);
mXmppConnectionService.getFileBackend().updateFileParams(message, mUrl);
mXmppConnectionService.updateMessage(message);
}
}
public void updateProgress(int i) {
this.mProgress = i;
mXmppConnectionService.updateConversationUi();
}
@Override
public int getStatus() {
return this.mStatus;
}
@Override
public long getFileSize() {
if (this.file != null) {
return this.file.getExpectedSize();
} else {
return 0;
}
}
@Override
public int getProgress() {
return this.mProgress;
}
}
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