243 lines
7.6 KiB
Java
243 lines
7.6 KiB
Java
package eu.siacs.conversations.xmpp.jingle;
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import android.util.Base64;
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import android.util.Log;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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import java.util.Arrays;
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import eu.siacs.conversations.Config;
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import eu.siacs.conversations.entities.Account;
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import eu.siacs.conversations.entities.DownloadableFile;
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import eu.siacs.conversations.persistance.FileBackend;
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import eu.siacs.conversations.utils.CryptoHelper;
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import eu.siacs.conversations.xml.Element;
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import eu.siacs.conversations.xmpp.OnIqPacketReceived;
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import eu.siacs.conversations.xmpp.jid.Jid;
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import eu.siacs.conversations.xmpp.stanzas.IqPacket;
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public class JingleInbandTransport extends JingleTransport {
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private Account account;
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private Jid counterpart;
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private int blockSize;
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private int seq = 0;
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private String sessionId;
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private boolean established = false;
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private boolean connected = true;
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private DownloadableFile file;
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private JingleConnection connection;
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private InputStream fileInputStream = null;
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private OutputStream fileOutputStream = null;
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private long remainingSize = 0;
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private long fileSize = 0;
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private MessageDigest digest;
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private OnFileTransmissionStatusChanged onFileTransmissionStatusChanged;
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private OnIqPacketReceived onAckReceived = new OnIqPacketReceived() {
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@Override
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public void onIqPacketReceived(Account account, IqPacket packet) {
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if (connected && packet.getType() == IqPacket.TYPE.RESULT) {
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sendNextBlock();
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}
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}
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};
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public JingleInbandTransport(final JingleConnection connection, final String sid, final int blocksize) {
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this.connection = connection;
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this.account = connection.getAccount();
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this.counterpart = connection.getCounterPart();
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this.blockSize = blocksize;
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this.sessionId = sid;
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}
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public void connect(final OnTransportConnected callback) {
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IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
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iq.setTo(this.counterpart);
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Element open = iq.addChild("open", "http://jabber.org/protocol/ibb");
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open.setAttribute("sid", this.sessionId);
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open.setAttribute("stanza", "iq");
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open.setAttribute("block-size", Integer.toString(this.blockSize));
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this.connected = true;
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this.account.getXmppConnection().sendIqPacket(iq,
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new OnIqPacketReceived() {
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@Override
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public void onIqPacketReceived(Account account,
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IqPacket packet) {
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if (packet.getType() == IqPacket.TYPE.ERROR) {
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callback.failed();
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} else {
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callback.established();
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}
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}
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});
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}
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@Override
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public void receive(DownloadableFile file,
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OnFileTransmissionStatusChanged callback) {
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this.onFileTransmissionStatusChanged = callback;
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this.file = file;
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try {
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this.digest = MessageDigest.getInstance("SHA-1");
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digest.reset();
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file.getParentFile().mkdirs();
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file.createNewFile();
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this.fileOutputStream = file.createOutputStream();
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if (this.fileOutputStream == null) {
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Log.d(Config.LOGTAG,account.getJid().toBareJid()+": could not create output stream");
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callback.onFileTransferAborted();
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return;
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}
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this.remainingSize = this.fileSize = file.getExpectedSize();
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} catch (final NoSuchAlgorithmException | IOException e) {
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Log.d(Config.LOGTAG,account.getJid().toBareJid()+" "+e.getMessage());
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callback.onFileTransferAborted();
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}
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}
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@Override
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public void send(DownloadableFile file,
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OnFileTransmissionStatusChanged callback) {
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this.onFileTransmissionStatusChanged = callback;
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this.file = file;
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try {
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if (this.file.getKey() != null) {
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this.remainingSize = (this.file.getSize() / 16 + 1) * 16;
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} else {
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this.remainingSize = this.file.getSize();
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}
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this.fileSize = this.remainingSize;
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this.digest = MessageDigest.getInstance("SHA-1");
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this.digest.reset();
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fileInputStream = this.file.createInputStream();
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if (fileInputStream == null) {
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Log.d(Config.LOGTAG,account.getJid().toBareJid()+": could no create input stream");
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callback.onFileTransferAborted();
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return;
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}
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if (this.connected) {
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this.sendNextBlock();
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}
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} catch (NoSuchAlgorithmException e) {
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callback.onFileTransferAborted();
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Log.d(Config.LOGTAG,account.getJid().toBareJid()+": "+e.getMessage());
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}
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}
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@Override
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public void disconnect() {
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this.connected = false;
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if (this.fileOutputStream != null) {
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try {
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this.fileOutputStream.close();
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} catch (IOException e) {
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}
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}
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if (this.fileInputStream != null) {
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try {
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this.fileInputStream.close();
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} catch (IOException e) {
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}
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}
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}
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private void sendNextBlock() {
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byte[] buffer = new byte[this.blockSize];
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try {
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int count = fileInputStream.read(buffer);
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if (count == -1) {
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file.setSha1Sum(CryptoHelper.bytesToHex(digest.digest()));
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this.onFileTransmissionStatusChanged.onFileTransmitted(file);
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fileInputStream.close();
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return;
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} else if (count != buffer.length) {
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int rem = fileInputStream.read(buffer,count,buffer.length-count);
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if (rem > 0) {
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count += rem;
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}
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}
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this.remainingSize -= count;
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this.digest.update(buffer,0,count);
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String base64 = Base64.encodeToString(buffer,0,count, Base64.NO_WRAP);
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IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
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iq.setTo(this.counterpart);
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Element data = iq.addChild("data", "http://jabber.org/protocol/ibb");
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data.setAttribute("seq", Integer.toString(this.seq));
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data.setAttribute("block-size", Integer.toString(this.blockSize));
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data.setAttribute("sid", this.sessionId);
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data.setContent(base64);
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this.account.getXmppConnection().sendIqPacket(iq, this.onAckReceived);
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this.seq++;
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if (this.remainingSize > 0) {
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connection.updateProgress((int) ((((double) (this.fileSize - this.remainingSize)) / this.fileSize) * 100));
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} else {
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file.setSha1Sum(CryptoHelper.bytesToHex(digest.digest()));
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this.onFileTransmissionStatusChanged.onFileTransmitted(file);
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fileInputStream.close();
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}
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} catch (IOException e) {
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Log.d(Config.LOGTAG,account.getJid().toBareJid()+": "+e.getMessage());
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FileBackend.close(fileInputStream);
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this.onFileTransmissionStatusChanged.onFileTransferAborted();
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}
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}
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private void receiveNextBlock(String data) {
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try {
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byte[] buffer = Base64.decode(data, Base64.NO_WRAP);
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if (this.remainingSize < buffer.length) {
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buffer = Arrays.copyOfRange(buffer, 0, (int) this.remainingSize);
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}
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this.remainingSize -= buffer.length;
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this.fileOutputStream.write(buffer);
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this.digest.update(buffer);
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if (this.remainingSize <= 0) {
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file.setSha1Sum(CryptoHelper.bytesToHex(digest.digest()));
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fileOutputStream.flush();
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fileOutputStream.close();
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this.onFileTransmissionStatusChanged.onFileTransmitted(file);
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} else {
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connection.updateProgress((int) ((((double) (this.fileSize - this.remainingSize)) / this.fileSize) * 100));
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}
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} catch (IOException e) {
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Log.d(Config.LOGTAG,account.getJid().toBareJid()+": "+e.getMessage());
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FileBackend.close(fileOutputStream);
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this.onFileTransmissionStatusChanged.onFileTransferAborted();
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}
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}
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public void deliverPayload(IqPacket packet, Element payload) {
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if (payload.getName().equals("open")) {
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if (!established) {
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established = true;
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connected = true;
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this.receiveNextBlock("");
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this.account.getXmppConnection().sendIqPacket(
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packet.generateResponse(IqPacket.TYPE.RESULT), null);
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} else {
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this.account.getXmppConnection().sendIqPacket(
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packet.generateResponse(IqPacket.TYPE.ERROR), null);
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}
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} else if (connected && payload.getName().equals("data")) {
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this.receiveNextBlock(payload.getContent());
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this.account.getXmppConnection().sendIqPacket(
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packet.generateResponse(IqPacket.TYPE.RESULT), null);
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} else {
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// TODO some sort of exception
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}
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}
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}
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