1155 lines
48 KiB
Java
1155 lines
48 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.FileInputStream;
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import java.io.FileNotFoundException;
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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.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Locale;
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import java.util.Map.Entry;
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import java.util.concurrent.ConcurrentHashMap;
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import eu.siacs.conversations.Config;
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import eu.siacs.conversations.crypto.axolotl.AxolotlService;
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import eu.siacs.conversations.crypto.axolotl.OnMessageCreatedCallback;
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import eu.siacs.conversations.crypto.axolotl.XmppAxolotlMessage;
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import eu.siacs.conversations.entities.Account;
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import eu.siacs.conversations.entities.Conversation;
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import eu.siacs.conversations.entities.DownloadableFile;
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import eu.siacs.conversations.entities.Message;
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import eu.siacs.conversations.entities.Presence;
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import eu.siacs.conversations.entities.ServiceDiscoveryResult;
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import eu.siacs.conversations.entities.Transferable;
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import eu.siacs.conversations.entities.TransferablePlaceholder;
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import eu.siacs.conversations.parser.IqParser;
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import eu.siacs.conversations.persistance.FileBackend;
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import eu.siacs.conversations.services.AbstractConnectionManager;
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import eu.siacs.conversations.services.XmppConnectionService;
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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.xml.Namespace;
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import eu.siacs.conversations.xmpp.OnIqPacketReceived;
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import eu.siacs.conversations.xmpp.jingle.stanzas.Content;
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import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
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import eu.siacs.conversations.xmpp.jingle.stanzas.Reason;
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import eu.siacs.conversations.xmpp.stanzas.IqPacket;
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import rocks.xmpp.addr.Jid;
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public class JingleConnection implements Transferable {
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private static final int JINGLE_STATUS_INITIATED = 0;
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private static final int JINGLE_STATUS_ACCEPTED = 1;
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private static final int JINGLE_STATUS_FINISHED = 4;
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static final int JINGLE_STATUS_TRANSMITTING = 5;
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private static final int JINGLE_STATUS_FAILED = 99;
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private static final int JINGLE_STATUS_OFFERED = -1;
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private JingleConnectionManager mJingleConnectionManager;
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private XmppConnectionService mXmppConnectionService;
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private Content.Version ftVersion = Content.Version.FT_3;
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private int ibbBlockSize = 8192;
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private int mJingleStatus = JINGLE_STATUS_OFFERED;
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private int mStatus = Transferable.STATUS_UNKNOWN;
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private Message message;
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private String sessionId;
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private Account account;
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private Jid initiator;
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private Jid responder;
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private List<JingleCandidate> candidates = new ArrayList<>();
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private ConcurrentHashMap<String, JingleSocks5Transport> connections = new ConcurrentHashMap<>();
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private String transportId;
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private Element fileOffer;
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private DownloadableFile file = null;
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private String contentName;
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private String contentCreator;
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private Transport initialTransport;
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private int mProgress = 0;
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private boolean receivedCandidate = false;
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private boolean sentCandidate = false;
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private boolean acceptedAutomatically = false;
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private boolean cancelled = false;
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private XmppAxolotlMessage mXmppAxolotlMessage;
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private JingleTransport transport = null;
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private OutputStream mFileOutputStream;
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private InputStream mFileInputStream;
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private OnIqPacketReceived responseListener = (account, packet) -> {
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if (packet.getType() != IqPacket.TYPE.RESULT) {
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fail(IqParser.extractErrorMessage(packet));
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}
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};
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private byte[] expectedHash = new byte[0];
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private final OnFileTransmissionStatusChanged onFileTransmissionStatusChanged = new OnFileTransmissionStatusChanged() {
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@Override
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public void onFileTransmitted(DownloadableFile file) {
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if (responding()) {
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if (expectedHash.length > 0 && !Arrays.equals(expectedHash, file.getSha1Sum())) {
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Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": hashes did not match");
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}
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Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": file transmitted(). we are responding");
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sendSuccess();
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mXmppConnectionService.getFileBackend().updateFileParams(message);
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mXmppConnectionService.databaseBackend.createMessage(message);
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mXmppConnectionService.markMessage(message, Message.STATUS_RECEIVED);
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if (acceptedAutomatically) {
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message.markUnread();
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if (message.getEncryption() == Message.ENCRYPTION_PGP) {
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account.getPgpDecryptionService().decrypt(message, true);
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} else {
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mXmppConnectionService.getFileBackend().updateMediaScanner(file, () -> JingleConnection.this.mXmppConnectionService.getNotificationService().push(message));
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}
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Log.d(Config.LOGTAG, "successfully transmitted file:" + file.getAbsolutePath() + " (" + CryptoHelper.bytesToHex(file.getSha1Sum()) + ")");
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return;
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} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
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account.getPgpDecryptionService().decrypt(message, true);
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}
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} else {
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if (ftVersion == Content.Version.FT_5) { //older Conversations will break when receiving a session-info
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sendHash();
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}
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if (message.getEncryption() == Message.ENCRYPTION_PGP) {
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account.getPgpDecryptionService().decrypt(message, false);
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}
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if (message.getEncryption() == Message.ENCRYPTION_PGP || message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
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file.delete();
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}
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}
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Log.d(Config.LOGTAG, "successfully transmitted file:" + file.getAbsolutePath() + " (" + CryptoHelper.bytesToHex(file.getSha1Sum()) + ")");
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if (message.getEncryption() != Message.ENCRYPTION_PGP) {
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mXmppConnectionService.getFileBackend().updateMediaScanner(file);
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}
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}
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@Override
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public void onFileTransferAborted() {
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JingleConnection.this.sendCancel();
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JingleConnection.this.fail();
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}
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};
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private OnTransportConnected onIbbTransportConnected = new OnTransportConnected() {
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@Override
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public void failed() {
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Log.d(Config.LOGTAG, "ibb open failed");
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}
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@Override
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public void established() {
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Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": ibb transport connected. sending file");
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mJingleStatus = JINGLE_STATUS_TRANSMITTING;
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JingleConnection.this.transport.send(file, onFileTransmissionStatusChanged);
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}
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};
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private OnProxyActivated onProxyActivated = new OnProxyActivated() {
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@Override
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public void success() {
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if (initiator.equals(account.getJid())) {
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Log.d(Config.LOGTAG, "we were initiating. sending file");
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transport.send(file, onFileTransmissionStatusChanged);
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} else {
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transport.receive(file, onFileTransmissionStatusChanged);
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Log.d(Config.LOGTAG, "we were responding. receiving file");
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}
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}
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@Override
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public void failed() {
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Log.d(Config.LOGTAG, "proxy activation failed");
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}
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};
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public JingleConnection(JingleConnectionManager mJingleConnectionManager) {
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this.mJingleConnectionManager = mJingleConnectionManager;
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this.mXmppConnectionService = mJingleConnectionManager
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.getXmppConnectionService();
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}
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private boolean responding() {
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return responder != null && responder.equals(account.getJid());
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}
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private boolean initiating() {
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return initiator.equals(account.getJid());
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}
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InputStream getFileInputStream() {
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return this.mFileInputStream;
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}
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OutputStream getFileOutputStream() throws IOException {
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if (this.file == null) {
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Log.d(Config.LOGTAG, "file object was not assigned");
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return null;
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}
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this.file.getParentFile().mkdirs();
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this.file.createNewFile();
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this.mFileOutputStream = AbstractConnectionManager.createOutputStream(this.file);
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return this.mFileOutputStream;
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}
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public String getSessionId() {
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return this.sessionId;
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}
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public Account getAccount() {
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return this.account;
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}
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public Jid getCounterPart() {
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return this.message.getCounterpart();
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}
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public void deliverPacket(JinglePacket packet) {
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boolean returnResult = true;
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if (packet.isAction("session-terminate")) {
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Reason reason = packet.getReason();
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if (reason != null) {
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if (reason.hasChild("cancel")) {
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this.fail();
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} else if (reason.hasChild("success")) {
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this.receiveSuccess();
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} else {
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this.fail();
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}
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} else {
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this.fail();
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}
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} else if (packet.isAction("session-accept")) {
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returnResult = receiveAccept(packet);
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} else if (packet.isAction("session-info")) {
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Element checksum = packet.getChecksum();
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Element file = checksum == null ? null : checksum.findChild("file");
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Element hash = file == null ? null : file.findChild("hash", "urn:xmpp:hashes:2");
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if (hash != null && "sha-1".equalsIgnoreCase(hash.getAttribute("algo"))) {
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try {
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this.expectedHash = Base64.decode(hash.getContent(), Base64.DEFAULT);
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} catch (Exception e) {
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this.expectedHash = new byte[0];
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}
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}
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} else if (packet.isAction("transport-info")) {
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returnResult = receiveTransportInfo(packet);
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} else if (packet.isAction("transport-replace")) {
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if (packet.getJingleContent().hasIbbTransport()) {
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returnResult = this.receiveFallbackToIbb(packet);
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} else {
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returnResult = false;
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Log.d(Config.LOGTAG, "trying to fallback to something unknown"
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+ packet.toString());
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}
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} else if (packet.isAction("transport-accept")) {
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returnResult = this.receiveTransportAccept(packet);
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} else {
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Log.d(Config.LOGTAG, "packet arrived in connection. action was "
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+ packet.getAction());
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returnResult = false;
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}
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IqPacket response;
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if (returnResult) {
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response = packet.generateResponse(IqPacket.TYPE.RESULT);
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} else {
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response = packet.generateResponse(IqPacket.TYPE.ERROR);
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}
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mXmppConnectionService.sendIqPacket(account, response, null);
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}
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public void init(final Message message) {
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if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
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Conversation conversation = (Conversation) message.getConversation();
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conversation.getAccount().getAxolotlService().prepareKeyTransportMessage(conversation, xmppAxolotlMessage -> {
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if (xmppAxolotlMessage != null) {
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init(message, xmppAxolotlMessage);
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} else {
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fail();
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}
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});
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} else {
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init(message, null);
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}
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}
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private void init(Message message, XmppAxolotlMessage xmppAxolotlMessage) {
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this.mXmppAxolotlMessage = xmppAxolotlMessage;
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this.contentCreator = "initiator";
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this.contentName = this.mJingleConnectionManager.nextRandomId();
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this.message = message;
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this.account = message.getConversation().getAccount();
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upgradeNamespace();
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this.initialTransport = getRemoteFeatures().contains(Namespace.JINGLE_TRANSPORTS_S5B) ? Transport.SOCKS : Transport.IBB;
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this.message.setTransferable(this);
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this.mStatus = Transferable.STATUS_UPLOADING;
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this.initiator = this.account.getJid();
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this.responder = this.message.getCounterpart();
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this.sessionId = this.mJingleConnectionManager.nextRandomId();
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this.transportId = this.mJingleConnectionManager.nextRandomId();
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if (this.initialTransport == Transport.IBB) {
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this.sendInitRequest();
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} else if (this.candidates.size() > 0) {
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this.sendInitRequest();
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} else {
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this.mJingleConnectionManager.getPrimaryCandidate(account, (success, candidate) -> {
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if (success) {
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final JingleSocks5Transport socksConnection = new JingleSocks5Transport(this, candidate);
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connections.put(candidate.getCid(), socksConnection);
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socksConnection.connect(new OnTransportConnected() {
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@Override
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public void failed() {
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Log.d(Config.LOGTAG,
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"connection to our own primary candidete failed");
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sendInitRequest();
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}
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@Override
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public void established() {
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Log.d(Config.LOGTAG,
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"successfully connected to our own primary candidate");
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mergeCandidate(candidate);
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sendInitRequest();
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}
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});
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mergeCandidate(candidate);
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} else {
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Log.d(Config.LOGTAG, "no primary candidate of our own was found");
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sendInitRequest();
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}
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});
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}
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}
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private void upgradeNamespace() {
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List<String> features = getRemoteFeatures();
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if (features.contains(Content.Version.FT_5.getNamespace())) {
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this.ftVersion = Content.Version.FT_5;
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} else if (features.contains(Content.Version.FT_4.getNamespace())) {
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this.ftVersion = Content.Version.FT_4;
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}
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}
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private List<String> getRemoteFeatures() {
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Jid jid = this.message.getCounterpart();
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String resource = jid != null ? jid.getResource() : null;
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if (resource != null) {
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Presence presence = this.account.getRoster().getContact(jid).getPresences().getPresences().get(resource);
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ServiceDiscoveryResult result = presence != null ? presence.getServiceDiscoveryResult() : null;
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return result == null ? Collections.emptyList() : result.getFeatures();
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} else {
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return Collections.emptyList();
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}
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}
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public void init(Account account, JinglePacket packet) {
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this.mJingleStatus = JINGLE_STATUS_INITIATED;
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Conversation conversation = this.mXmppConnectionService
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.findOrCreateConversation(account,
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packet.getFrom().asBareJid(), false, false);
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this.message = new Message(conversation, "", Message.ENCRYPTION_NONE);
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this.message.setStatus(Message.STATUS_RECEIVED);
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this.mStatus = Transferable.STATUS_OFFER;
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this.message.setTransferable(this);
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final Jid from = packet.getFrom();
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this.message.setCounterpart(from);
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this.account = account;
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this.initiator = packet.getFrom();
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this.responder = this.account.getJid();
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this.sessionId = packet.getSessionId();
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Content content = packet.getJingleContent();
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this.contentCreator = content.getAttribute("creator");
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this.initialTransport = content.hasSocks5Transport() ? Transport.SOCKS : Transport.IBB;
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this.contentName = content.getAttribute("name");
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this.transportId = content.getTransportId();
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mXmppConnectionService.sendIqPacket(account, packet.generateResponse(IqPacket.TYPE.RESULT), null);
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if (this.initialTransport == Transport.SOCKS) {
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this.mergeCandidates(JingleCandidate.parse(content.socks5transport().getChildren()));
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} else if (this.initialTransport == Transport.IBB) {
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final String receivedBlockSize = content.ibbTransport().getAttribute("block-size");
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if (receivedBlockSize != null) {
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try {
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this.ibbBlockSize = Math.min(Integer.parseInt(receivedBlockSize), this.ibbBlockSize);
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} catch (NumberFormatException e) {
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Log.d(Config.LOGTAG, "number format exception " + e.getMessage());
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this.sendCancel();
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this.fail();
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return;
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}
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} else {
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Log.d(Config.LOGTAG, "received block size was null");
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this.sendCancel();
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this.fail();
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return;
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}
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}
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this.ftVersion = content.getVersion();
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if (ftVersion == null) {
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this.sendCancel();
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this.fail();
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return;
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}
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this.fileOffer = content.getFileOffer(this.ftVersion);
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if (fileOffer != null) {
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Element encrypted = fileOffer.findChild("encrypted", AxolotlService.PEP_PREFIX);
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if (encrypted != null) {
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this.mXmppAxolotlMessage = XmppAxolotlMessage.fromElement(encrypted, packet.getFrom().asBareJid());
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}
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Element fileSize = fileOffer.findChild("size");
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final String path = fileOffer.findChildContent("name");
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if (path != null) {
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AbstractConnectionManager.Extension extension = AbstractConnectionManager.Extension.of(path);
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if (VALID_IMAGE_EXTENSIONS.contains(extension.main)) {
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message.setType(Message.TYPE_IMAGE);
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message.setRelativeFilePath(message.getUuid() + "." + extension.main);
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} else if (VALID_CRYPTO_EXTENSIONS.contains(extension.main)) {
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if (VALID_IMAGE_EXTENSIONS.contains(extension.secondary)) {
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message.setType(Message.TYPE_IMAGE);
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message.setRelativeFilePath(message.getUuid() + "." + extension.secondary);
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} else {
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message.setType(Message.TYPE_FILE);
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message.setRelativeFilePath(message.getUuid() + (extension.secondary != null ? ("." + extension.secondary) : ""));
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}
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message.setEncryption(Message.ENCRYPTION_PGP);
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} else {
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message.setType(Message.TYPE_FILE);
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message.setRelativeFilePath(message.getUuid() + (extension.main != null ? ("." + extension.main) : ""));
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}
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long size = parseLong(fileSize, 0);
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message.setBody(Long.toString(size));
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conversation.add(message);
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mJingleConnectionManager.updateConversationUi(true);
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this.file = this.mXmppConnectionService.getFileBackend().getFile(message, false);
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if (mXmppAxolotlMessage != null) {
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XmppAxolotlMessage.XmppAxolotlKeyTransportMessage transportMessage = account.getAxolotlService().processReceivingKeyTransportMessage(mXmppAxolotlMessage, false);
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if (transportMessage != null) {
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message.setEncryption(Message.ENCRYPTION_AXOLOTL);
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this.file.setKey(transportMessage.getKey());
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this.file.setIv(transportMessage.getIv());
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message.setFingerprint(transportMessage.getFingerprint());
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} else {
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Log.d(Config.LOGTAG, "could not process KeyTransportMessage");
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}
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}
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message.resetFileParams();
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this.file.setExpectedSize(size);
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if (mJingleConnectionManager.hasStoragePermission()
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&& size < this.mJingleConnectionManager.getAutoAcceptFileSize()
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&& mXmppConnectionService.isDataSaverDisabled()) {
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Log.d(Config.LOGTAG, "auto accepting file from " + packet.getFrom());
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this.acceptedAutomatically = true;
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this.sendAccept();
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} else {
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message.markUnread();
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Log.d(Config.LOGTAG,
|
|
"not auto accepting new file offer with size: "
|
|
+ size
|
|
+ " allowed size:"
|
|
+ this.mJingleConnectionManager
|
|
.getAutoAcceptFileSize());
|
|
this.mXmppConnectionService.getNotificationService().push(message);
|
|
}
|
|
Log.d(Config.LOGTAG, "receiving file: expecting size of " + this.file.getExpectedSize());
|
|
} else {
|
|
this.sendCancel();
|
|
this.fail();
|
|
}
|
|
} else {
|
|
this.sendCancel();
|
|
this.fail();
|
|
}
|
|
}
|
|
|
|
private static long parseLong(final Element element, final long l) {
|
|
final String input = element == null ? null : element.getContent();
|
|
if (input == null) {
|
|
return l;
|
|
}
|
|
try {
|
|
return Long.parseLong(input);
|
|
} catch (Exception e) {
|
|
return l;
|
|
}
|
|
}
|
|
|
|
private void sendInitRequest() {
|
|
JinglePacket packet = this.bootstrapPacket("session-initiate");
|
|
Content content = new Content(this.contentCreator, this.contentName);
|
|
if (message.isFileOrImage()) {
|
|
content.setTransportId(this.transportId);
|
|
this.file = this.mXmppConnectionService.getFileBackend().getFile(message, false);
|
|
if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
|
|
this.file.setKey(mXmppAxolotlMessage.getInnerKey());
|
|
this.file.setIv(mXmppAxolotlMessage.getIV());
|
|
this.file.setExpectedSize(file.getSize() + 16);
|
|
content.setFileOffer(this.file, false, this.ftVersion).addChild(mXmppAxolotlMessage.toElement());
|
|
} else {
|
|
this.file.setExpectedSize(file.getSize());
|
|
content.setFileOffer(this.file, false, this.ftVersion);
|
|
}
|
|
message.resetFileParams();
|
|
try {
|
|
this.mFileInputStream = new FileInputStream(file);
|
|
} catch (FileNotFoundException e) {
|
|
abort();
|
|
return;
|
|
}
|
|
content.setTransportId(this.transportId);
|
|
if (this.initialTransport == Transport.IBB) {
|
|
content.ibbTransport().setAttribute("block-size", Integer.toString(this.ibbBlockSize));
|
|
} else {
|
|
content.socks5transport().setChildren(getCandidatesAsElements());
|
|
}
|
|
packet.setContent(content);
|
|
this.sendJinglePacket(packet, (account, response) -> {
|
|
if (response.getType() == IqPacket.TYPE.RESULT) {
|
|
Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": other party received offer");
|
|
if (mJingleStatus == JINGLE_STATUS_OFFERED) {
|
|
mJingleStatus = JINGLE_STATUS_INITIATED;
|
|
mXmppConnectionService.markMessage(message, Message.STATUS_OFFERED);
|
|
} else {
|
|
Log.d(Config.LOGTAG, "received ack for offer when status was " + mJingleStatus);
|
|
}
|
|
} else {
|
|
fail(IqParser.extractErrorMessage(response));
|
|
}
|
|
});
|
|
|
|
}
|
|
}
|
|
|
|
private void sendHash() {
|
|
JinglePacket packet = this.bootstrapPacket("session-info");
|
|
packet.addChecksum(file.getSha1Sum(), ftVersion.getNamespace());
|
|
this.sendJinglePacket(packet);
|
|
}
|
|
|
|
private List<Element> getCandidatesAsElements() {
|
|
List<Element> elements = new ArrayList<>();
|
|
for (JingleCandidate c : this.candidates) {
|
|
if (c.isOurs()) {
|
|
elements.add(c.toElement());
|
|
}
|
|
}
|
|
return elements;
|
|
}
|
|
|
|
private void sendAccept() {
|
|
mJingleStatus = JINGLE_STATUS_ACCEPTED;
|
|
this.mStatus = Transferable.STATUS_DOWNLOADING;
|
|
this.mJingleConnectionManager.updateConversationUi(true);
|
|
if (initialTransport == Transport.SOCKS) {
|
|
sendAcceptSocks();
|
|
} else {
|
|
sendAcceptIbb();
|
|
}
|
|
}
|
|
|
|
private void sendAcceptSocks() {
|
|
this.mJingleConnectionManager.getPrimaryCandidate(this.account, (success, candidate) -> {
|
|
final JinglePacket packet = bootstrapPacket("session-accept");
|
|
final Content content = new Content(contentCreator, contentName);
|
|
content.setFileOffer(fileOffer, ftVersion);
|
|
content.setTransportId(transportId);
|
|
if (success && candidate != null && !equalCandidateExists(candidate)) {
|
|
final JingleSocks5Transport socksConnection = new JingleSocks5Transport(this, candidate);
|
|
connections.put(candidate.getCid(), socksConnection);
|
|
socksConnection.connect(new OnTransportConnected() {
|
|
|
|
@Override
|
|
public void failed() {
|
|
Log.d(Config.LOGTAG, "connection to our own primary candidate failed");
|
|
content.socks5transport().setChildren(getCandidatesAsElements());
|
|
packet.setContent(content);
|
|
sendJinglePacket(packet);
|
|
connectNextCandidate();
|
|
}
|
|
|
|
@Override
|
|
public void established() {
|
|
Log.d(Config.LOGTAG, "connected to primary candidate");
|
|
mergeCandidate(candidate);
|
|
content.socks5transport().setChildren(getCandidatesAsElements());
|
|
packet.setContent(content);
|
|
sendJinglePacket(packet);
|
|
connectNextCandidate();
|
|
}
|
|
});
|
|
} else {
|
|
Log.d(Config.LOGTAG, "did not find a primary candidate for ourself");
|
|
content.socks5transport().setChildren(getCandidatesAsElements());
|
|
packet.setContent(content);
|
|
sendJinglePacket(packet);
|
|
connectNextCandidate();
|
|
}
|
|
});
|
|
}
|
|
|
|
private void sendAcceptIbb() {
|
|
this.transport = new JingleInbandTransport(this, this.transportId, this.ibbBlockSize);
|
|
final JinglePacket packet = bootstrapPacket("session-accept");
|
|
final Content content = new Content(contentCreator, contentName);
|
|
content.setFileOffer(fileOffer, ftVersion);
|
|
content.setTransportId(transportId);
|
|
content.ibbTransport().setAttribute("block-size", this.ibbBlockSize);
|
|
packet.setContent(content);
|
|
this.transport.receive(file, onFileTransmissionStatusChanged);
|
|
this.sendJinglePacket(packet);
|
|
}
|
|
|
|
private JinglePacket bootstrapPacket(String action) {
|
|
JinglePacket packet = new JinglePacket();
|
|
packet.setAction(action);
|
|
packet.setFrom(account.getJid());
|
|
packet.setTo(this.message.getCounterpart());
|
|
packet.setSessionId(this.sessionId);
|
|
packet.setInitiator(this.initiator);
|
|
return packet;
|
|
}
|
|
|
|
private void sendJinglePacket(JinglePacket packet) {
|
|
mXmppConnectionService.sendIqPacket(account, packet, responseListener);
|
|
}
|
|
|
|
private void sendJinglePacket(JinglePacket packet, OnIqPacketReceived callback) {
|
|
mXmppConnectionService.sendIqPacket(account, packet, callback);
|
|
}
|
|
|
|
private boolean receiveAccept(JinglePacket packet) {
|
|
if (this.mJingleStatus != JINGLE_STATUS_INITIATED) {
|
|
Log.d(Config.LOGTAG,account.getJid().asBareJid()+": received out of order session-accept");
|
|
return false;
|
|
}
|
|
this.mJingleStatus = JINGLE_STATUS_ACCEPTED;
|
|
mXmppConnectionService.markMessage(message, Message.STATUS_UNSEND);
|
|
Content content = packet.getJingleContent();
|
|
if (content.hasSocks5Transport()) {
|
|
mergeCandidates(JingleCandidate.parse(content.socks5transport().getChildren()));
|
|
this.connectNextCandidate();
|
|
return true;
|
|
} else if (content.hasIbbTransport()) {
|
|
String receivedBlockSize = packet.getJingleContent().ibbTransport().getAttribute("block-size");
|
|
if (receivedBlockSize != null) {
|
|
int bs = Integer.parseInt(receivedBlockSize);
|
|
if (bs > this.ibbBlockSize) {
|
|
this.ibbBlockSize = bs;
|
|
}
|
|
}
|
|
this.transport = new JingleInbandTransport(this, this.transportId, this.ibbBlockSize);
|
|
this.transport.connect(onIbbTransportConnected);
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
private boolean receiveTransportInfo(JinglePacket packet) {
|
|
Content content = packet.getJingleContent();
|
|
if (content.hasSocks5Transport()) {
|
|
if (content.socks5transport().hasChild("activated")) {
|
|
if ((this.transport != null) && (this.transport instanceof JingleSocks5Transport)) {
|
|
onProxyActivated.success();
|
|
} else {
|
|
String cid = content.socks5transport().findChild("activated").getAttribute("cid");
|
|
Log.d(Config.LOGTAG, "received proxy activated (" + cid
|
|
+ ")prior to choosing our own transport");
|
|
JingleSocks5Transport connection = this.connections.get(cid);
|
|
if (connection != null) {
|
|
connection.setActivated(true);
|
|
} else {
|
|
Log.d(Config.LOGTAG, "activated connection not found");
|
|
this.sendCancel();
|
|
this.fail();
|
|
}
|
|
}
|
|
return true;
|
|
} else if (content.socks5transport().hasChild("proxy-error")) {
|
|
onProxyActivated.failed();
|
|
return true;
|
|
} else if (content.socks5transport().hasChild("candidate-error")) {
|
|
Log.d(Config.LOGTAG, "received candidate error");
|
|
this.receivedCandidate = true;
|
|
if (mJingleStatus == JINGLE_STATUS_ACCEPTED && this.sentCandidate) {
|
|
this.connect();
|
|
}
|
|
return true;
|
|
} else if (content.socks5transport().hasChild("candidate-used")) {
|
|
String cid = content.socks5transport().findChild("candidate-used").getAttribute("cid");
|
|
if (cid != null) {
|
|
Log.d(Config.LOGTAG, "candidate used by counterpart:" + cid);
|
|
JingleCandidate candidate = getCandidate(cid);
|
|
if (candidate == null) {
|
|
Log.d(Config.LOGTAG, "could not find candidate with cid=" + cid);
|
|
return false;
|
|
}
|
|
candidate.flagAsUsedByCounterpart();
|
|
this.receivedCandidate = true;
|
|
if (mJingleStatus == JINGLE_STATUS_ACCEPTED && this.sentCandidate) {
|
|
this.connect();
|
|
} else {
|
|
Log.d(Config.LOGTAG, "ignoring because file is already in transmission or we haven't sent our candidate yet status=" + mJingleStatus + " sentCandidate=" + sentCandidate);
|
|
}
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
} else {
|
|
return false;
|
|
}
|
|
} else {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
private void connect() {
|
|
final JingleSocks5Transport connection = chooseConnection();
|
|
this.transport = connection;
|
|
if (connection == null) {
|
|
Log.d(Config.LOGTAG, "could not find suitable candidate");
|
|
this.disconnectSocks5Connections();
|
|
if (initiating()) {
|
|
this.sendFallbackToIbb();
|
|
}
|
|
} else {
|
|
this.mJingleStatus = JINGLE_STATUS_TRANSMITTING;
|
|
if (connection.needsActivation()) {
|
|
if (connection.getCandidate().isOurs()) {
|
|
final String sid;
|
|
if (ftVersion == Content.Version.FT_3) {
|
|
Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": use session ID instead of transport ID to activate proxy");
|
|
sid = getSessionId();
|
|
} else {
|
|
sid = getTransportId();
|
|
}
|
|
Log.d(Config.LOGTAG, "candidate "
|
|
+ connection.getCandidate().getCid()
|
|
+ " was our proxy. going to activate");
|
|
IqPacket activation = new IqPacket(IqPacket.TYPE.SET);
|
|
activation.setTo(connection.getCandidate().getJid());
|
|
activation.query("http://jabber.org/protocol/bytestreams")
|
|
.setAttribute("sid", sid);
|
|
activation.query().addChild("activate")
|
|
.setContent(this.getCounterPart().toString());
|
|
mXmppConnectionService.sendIqPacket(account, activation, (account, response) -> {
|
|
if (response.getType() != IqPacket.TYPE.RESULT) {
|
|
onProxyActivated.failed();
|
|
} else {
|
|
onProxyActivated.success();
|
|
sendProxyActivated(connection.getCandidate().getCid());
|
|
}
|
|
});
|
|
} else {
|
|
Log.d(Config.LOGTAG,
|
|
"candidate "
|
|
+ connection.getCandidate().getCid()
|
|
+ " was a proxy. waiting for other party to activate");
|
|
}
|
|
} else {
|
|
if (initiating()) {
|
|
Log.d(Config.LOGTAG, "we were initiating. sending file");
|
|
connection.send(file, onFileTransmissionStatusChanged);
|
|
} else {
|
|
Log.d(Config.LOGTAG, "we were responding. receiving file");
|
|
connection.receive(file, onFileTransmissionStatusChanged);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private JingleSocks5Transport chooseConnection() {
|
|
JingleSocks5Transport connection = null;
|
|
for (Entry<String, JingleSocks5Transport> cursor : connections
|
|
.entrySet()) {
|
|
JingleSocks5Transport currentConnection = cursor.getValue();
|
|
// Log.d(Config.LOGTAG,"comparing candidate: "+currentConnection.getCandidate().toString());
|
|
if (currentConnection.isEstablished()
|
|
&& (currentConnection.getCandidate().isUsedByCounterpart() || (!currentConnection
|
|
.getCandidate().isOurs()))) {
|
|
// Log.d(Config.LOGTAG,"is usable");
|
|
if (connection == null) {
|
|
connection = currentConnection;
|
|
} else {
|
|
if (connection.getCandidate().getPriority() < currentConnection
|
|
.getCandidate().getPriority()) {
|
|
connection = currentConnection;
|
|
} else if (connection.getCandidate().getPriority() == currentConnection
|
|
.getCandidate().getPriority()) {
|
|
// Log.d(Config.LOGTAG,"found two candidates with same priority");
|
|
if (initiating()) {
|
|
if (currentConnection.getCandidate().isOurs()) {
|
|
connection = currentConnection;
|
|
}
|
|
} else {
|
|
if (!currentConnection.getCandidate().isOurs()) {
|
|
connection = currentConnection;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return connection;
|
|
}
|
|
|
|
private void sendSuccess() {
|
|
JinglePacket packet = bootstrapPacket("session-terminate");
|
|
Reason reason = new Reason();
|
|
reason.addChild("success");
|
|
packet.setReason(reason);
|
|
this.sendJinglePacket(packet);
|
|
this.disconnectSocks5Connections();
|
|
this.mJingleStatus = JINGLE_STATUS_FINISHED;
|
|
this.message.setStatus(Message.STATUS_RECEIVED);
|
|
this.message.setTransferable(null);
|
|
this.mXmppConnectionService.updateMessage(message, false);
|
|
this.mJingleConnectionManager.finishConnection(this);
|
|
}
|
|
|
|
private void sendFallbackToIbb() {
|
|
Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": sending fallback to ibb");
|
|
JinglePacket packet = this.bootstrapPacket("transport-replace");
|
|
Content content = new Content(this.contentCreator, this.contentName);
|
|
this.transportId = this.mJingleConnectionManager.nextRandomId();
|
|
content.setTransportId(this.transportId);
|
|
content.ibbTransport().setAttribute("block-size",
|
|
Integer.toString(this.ibbBlockSize));
|
|
packet.setContent(content);
|
|
this.sendJinglePacket(packet);
|
|
}
|
|
|
|
|
|
private boolean receiveFallbackToIbb(JinglePacket packet) {
|
|
Log.d(Config.LOGTAG, "receiving fallack to ibb");
|
|
final String receivedBlockSize = packet.getJingleContent().ibbTransport().getAttribute("block-size");
|
|
if (receivedBlockSize != null) {
|
|
final int bs = Integer.parseInt(receivedBlockSize);
|
|
if (bs < this.ibbBlockSize) {
|
|
this.ibbBlockSize = bs;
|
|
}
|
|
}
|
|
this.transportId = packet.getJingleContent().getTransportId();
|
|
this.transport = new JingleInbandTransport(this, this.transportId, this.ibbBlockSize);
|
|
|
|
final JinglePacket answer = bootstrapPacket("transport-accept");
|
|
|
|
final Content content = new Content(contentCreator, contentName);
|
|
content.setFileOffer(fileOffer, ftVersion);
|
|
content.ibbTransport().setAttribute("block-size", this.ibbBlockSize);
|
|
answer.setContent(content);
|
|
|
|
|
|
if (initiating()) {
|
|
this.sendJinglePacket(answer, (account, response) -> {
|
|
if (response.getType() == IqPacket.TYPE.RESULT) {
|
|
Log.d(Config.LOGTAG, account.getJid().asBareJid() + " recipient ACKed our transport-accept. creating ibb");
|
|
transport.connect(onIbbTransportConnected);
|
|
}
|
|
});
|
|
} else {
|
|
this.transport.receive(file, onFileTransmissionStatusChanged);
|
|
this.sendJinglePacket(answer);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
private boolean receiveTransportAccept(JinglePacket packet) {
|
|
if (packet.getJingleContent().hasIbbTransport()) {
|
|
String receivedBlockSize = packet.getJingleContent().ibbTransport()
|
|
.getAttribute("block-size");
|
|
if (receivedBlockSize != null) {
|
|
int bs = Integer.parseInt(receivedBlockSize);
|
|
if (bs > this.ibbBlockSize) {
|
|
this.ibbBlockSize = bs;
|
|
}
|
|
}
|
|
this.transport = new JingleInbandTransport(this, this.transportId, this.ibbBlockSize);
|
|
|
|
//might be receive instead if we are not initiating
|
|
if (initiating()) {
|
|
this.transport.connect(onIbbTransportConnected);
|
|
} else {
|
|
this.transport.receive(file, onFileTransmissionStatusChanged);
|
|
}
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
private void receiveSuccess() {
|
|
if (initiating()) {
|
|
this.mJingleStatus = JINGLE_STATUS_FINISHED;
|
|
this.mXmppConnectionService.markMessage(this.message, Message.STATUS_SEND_RECEIVED);
|
|
this.disconnectSocks5Connections();
|
|
if (this.transport instanceof JingleInbandTransport) {
|
|
this.transport.disconnect();
|
|
}
|
|
this.message.setTransferable(null);
|
|
this.mJingleConnectionManager.finishConnection(this);
|
|
} else {
|
|
Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received session-terminate/success while responding");
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void cancel() {
|
|
this.cancelled = true;
|
|
abort();
|
|
}
|
|
|
|
public void abort() {
|
|
this.disconnectSocks5Connections();
|
|
if (this.transport instanceof JingleInbandTransport) {
|
|
this.transport.disconnect();
|
|
}
|
|
this.sendCancel();
|
|
this.mJingleConnectionManager.finishConnection(this);
|
|
if (responding()) {
|
|
this.message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_FAILED));
|
|
if (this.file != null) {
|
|
file.delete();
|
|
}
|
|
this.mJingleConnectionManager.updateConversationUi(true);
|
|
} else {
|
|
this.mXmppConnectionService.markMessage(this.message, Message.STATUS_SEND_FAILED, cancelled ? Message.ERROR_MESSAGE_CANCELLED : null);
|
|
this.message.setTransferable(null);
|
|
}
|
|
}
|
|
|
|
private void fail() {
|
|
fail(null);
|
|
}
|
|
|
|
private void fail(String errorMessage) {
|
|
this.mJingleStatus = JINGLE_STATUS_FAILED;
|
|
this.disconnectSocks5Connections();
|
|
if (this.transport instanceof JingleInbandTransport) {
|
|
this.transport.disconnect();
|
|
}
|
|
FileBackend.close(mFileInputStream);
|
|
FileBackend.close(mFileOutputStream);
|
|
if (this.message != null) {
|
|
if (responding()) {
|
|
this.message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_FAILED));
|
|
if (this.file != null) {
|
|
file.delete();
|
|
}
|
|
this.mJingleConnectionManager.updateConversationUi(true);
|
|
} else {
|
|
this.mXmppConnectionService.markMessage(this.message,
|
|
Message.STATUS_SEND_FAILED,
|
|
cancelled ? Message.ERROR_MESSAGE_CANCELLED : errorMessage);
|
|
this.message.setTransferable(null);
|
|
}
|
|
}
|
|
this.mJingleConnectionManager.finishConnection(this);
|
|
}
|
|
|
|
private void sendCancel() {
|
|
JinglePacket packet = bootstrapPacket("session-terminate");
|
|
Reason reason = new Reason();
|
|
reason.addChild("cancel");
|
|
packet.setReason(reason);
|
|
this.sendJinglePacket(packet);
|
|
}
|
|
|
|
private void connectNextCandidate() {
|
|
for (JingleCandidate candidate : this.candidates) {
|
|
if ((!connections.containsKey(candidate.getCid()) && (!candidate
|
|
.isOurs()))) {
|
|
this.connectWithCandidate(candidate);
|
|
return;
|
|
}
|
|
}
|
|
this.sendCandidateError();
|
|
}
|
|
|
|
private void connectWithCandidate(final JingleCandidate candidate) {
|
|
final JingleSocks5Transport socksConnection = new JingleSocks5Transport(
|
|
this, candidate);
|
|
connections.put(candidate.getCid(), socksConnection);
|
|
socksConnection.connect(new OnTransportConnected() {
|
|
|
|
@Override
|
|
public void failed() {
|
|
Log.d(Config.LOGTAG,
|
|
"connection failed with " + candidate.getHost() + ":"
|
|
+ candidate.getPort());
|
|
connectNextCandidate();
|
|
}
|
|
|
|
@Override
|
|
public void established() {
|
|
Log.d(Config.LOGTAG,
|
|
"established connection with " + candidate.getHost()
|
|
+ ":" + candidate.getPort());
|
|
sendCandidateUsed(candidate.getCid());
|
|
}
|
|
});
|
|
}
|
|
|
|
private void disconnectSocks5Connections() {
|
|
Iterator<Entry<String, JingleSocks5Transport>> it = this.connections
|
|
.entrySet().iterator();
|
|
while (it.hasNext()) {
|
|
Entry<String, JingleSocks5Transport> pairs = it.next();
|
|
pairs.getValue().disconnect();
|
|
it.remove();
|
|
}
|
|
}
|
|
|
|
private void sendProxyActivated(String cid) {
|
|
JinglePacket packet = bootstrapPacket("transport-info");
|
|
Content content = new Content(this.contentCreator, this.contentName);
|
|
content.setTransportId(this.transportId);
|
|
content.socks5transport().addChild("activated").setAttribute("cid", cid);
|
|
packet.setContent(content);
|
|
this.sendJinglePacket(packet);
|
|
}
|
|
|
|
private void sendCandidateUsed(final String cid) {
|
|
JinglePacket packet = bootstrapPacket("transport-info");
|
|
Content content = new Content(this.contentCreator, this.contentName);
|
|
content.setTransportId(this.transportId);
|
|
content.socks5transport().addChild("candidate-used").setAttribute("cid", cid);
|
|
packet.setContent(content);
|
|
this.sentCandidate = true;
|
|
if ((receivedCandidate) && (mJingleStatus == JINGLE_STATUS_ACCEPTED)) {
|
|
connect();
|
|
}
|
|
this.sendJinglePacket(packet);
|
|
}
|
|
|
|
private void sendCandidateError() {
|
|
Log.d(Config.LOGTAG, "sending candidate error");
|
|
JinglePacket packet = bootstrapPacket("transport-info");
|
|
Content content = new Content(this.contentCreator, this.contentName);
|
|
content.setTransportId(this.transportId);
|
|
content.socks5transport().addChild("candidate-error");
|
|
packet.setContent(content);
|
|
this.sentCandidate = true;
|
|
this.sendJinglePacket(packet);
|
|
if (receivedCandidate && mJingleStatus == JINGLE_STATUS_ACCEPTED) {
|
|
connect();
|
|
}
|
|
}
|
|
|
|
public int getJingleStatus() {
|
|
return this.mJingleStatus;
|
|
}
|
|
|
|
private boolean equalCandidateExists(JingleCandidate candidate) {
|
|
for (JingleCandidate c : this.candidates) {
|
|
if (c.equalValues(candidate)) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
private void mergeCandidate(JingleCandidate candidate) {
|
|
for (JingleCandidate c : this.candidates) {
|
|
if (c.equals(candidate)) {
|
|
return;
|
|
}
|
|
}
|
|
this.candidates.add(candidate);
|
|
}
|
|
|
|
private void mergeCandidates(List<JingleCandidate> candidates) {
|
|
for (JingleCandidate c : candidates) {
|
|
mergeCandidate(c);
|
|
}
|
|
}
|
|
|
|
private JingleCandidate getCandidate(String cid) {
|
|
for (JingleCandidate c : this.candidates) {
|
|
if (c.getCid().equals(cid)) {
|
|
return c;
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
void updateProgress(int i) {
|
|
this.mProgress = i;
|
|
mJingleConnectionManager.updateConversationUi(false);
|
|
}
|
|
|
|
public String getTransportId() {
|
|
return this.transportId;
|
|
}
|
|
|
|
public Content.Version getFtVersion() {
|
|
return this.ftVersion;
|
|
}
|
|
|
|
public boolean hasTransportId(String sid) {
|
|
return sid.equals(this.transportId);
|
|
}
|
|
|
|
public JingleTransport getTransport() {
|
|
return this.transport;
|
|
}
|
|
|
|
public boolean start() {
|
|
if (account.getStatus() == Account.State.ONLINE) {
|
|
if (mJingleStatus == JINGLE_STATUS_INITIATED) {
|
|
new Thread(this::sendAccept).start();
|
|
}
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
@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;
|
|
}
|
|
|
|
public AbstractConnectionManager getConnectionManager() {
|
|
return this.mJingleConnectionManager;
|
|
}
|
|
|
|
interface OnProxyActivated {
|
|
void success();
|
|
|
|
void failed();
|
|
}
|
|
}
|