package eu.siacs.conversations.http; import android.content.Intent; import android.net.Uri; import android.os.SystemClock; 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.Transferable; import eu.siacs.conversations.entities.DownloadableFile; import eu.siacs.conversations.entities.Message; 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; private long mLastGuiRefresh = 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) { 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.setKey(CryptoHelper.hexToBytes(reference)); } if (this.message.getEncryption() == Message.ENCRYPTION_OTR && 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; public FileDownloader(boolean interactive) { this.interactive = interactive; } @Override public void run() { try { changeStatus(STATUS_DOWNLOADING); download(); updateImageBounds(); finish(); } catch (SSLHandshakeException e) { changeStatus(STATUS_OFFER); } catch (IOException e) { mXmppConnectionService.showErrorToastInUi(R.string.file_not_found_on_remote_host); cancel(); } } private void download() throws SSLHandshakeException, 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(); OutputStream os = file.createOutputStream(); if (os == null) { throw new IOException(); } 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; if (SystemClock.elapsedRealtime() - this.mLastGuiRefresh > Config.PROGRESS_UI_UPDATE_INTERVAL) { this.mLastGuiRefresh = SystemClock.elapsedRealtime(); 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; } }