684 lines
28 KiB
Java
684 lines
28 KiB
Java
package eu.siacs.conversations.crypto.axolotl;
|
|
|
|
import android.support.annotation.NonNull;
|
|
import android.support.annotation.Nullable;
|
|
import android.util.Log;
|
|
|
|
import org.bouncycastle.jce.provider.BouncyCastleProvider;
|
|
import org.whispersystems.libaxolotl.AxolotlAddress;
|
|
import org.whispersystems.libaxolotl.IdentityKey;
|
|
import org.whispersystems.libaxolotl.IdentityKeyPair;
|
|
import org.whispersystems.libaxolotl.InvalidKeyException;
|
|
import org.whispersystems.libaxolotl.InvalidKeyIdException;
|
|
import org.whispersystems.libaxolotl.SessionBuilder;
|
|
import org.whispersystems.libaxolotl.UntrustedIdentityException;
|
|
import org.whispersystems.libaxolotl.ecc.ECPublicKey;
|
|
import org.whispersystems.libaxolotl.state.PreKeyBundle;
|
|
import org.whispersystems.libaxolotl.state.PreKeyRecord;
|
|
import org.whispersystems.libaxolotl.state.SignedPreKeyRecord;
|
|
import org.whispersystems.libaxolotl.util.KeyHelper;
|
|
|
|
import java.security.Security;
|
|
import java.util.Arrays;
|
|
import java.util.HashMap;
|
|
import java.util.HashSet;
|
|
import java.util.List;
|
|
import java.util.Map;
|
|
import java.util.Random;
|
|
import java.util.Set;
|
|
|
|
import eu.siacs.conversations.Config;
|
|
import eu.siacs.conversations.entities.Account;
|
|
import eu.siacs.conversations.entities.Contact;
|
|
import eu.siacs.conversations.entities.Conversation;
|
|
import eu.siacs.conversations.entities.Message;
|
|
import eu.siacs.conversations.parser.IqParser;
|
|
import eu.siacs.conversations.services.XmppConnectionService;
|
|
import eu.siacs.conversations.utils.SerialSingleThreadExecutor;
|
|
import eu.siacs.conversations.xml.Element;
|
|
import eu.siacs.conversations.xmpp.OnIqPacketReceived;
|
|
import eu.siacs.conversations.xmpp.jid.InvalidJidException;
|
|
import eu.siacs.conversations.xmpp.jid.Jid;
|
|
import eu.siacs.conversations.xmpp.stanzas.IqPacket;
|
|
|
|
public class AxolotlService {
|
|
|
|
public static final String PEP_PREFIX = "eu.siacs.conversations.axolotl";
|
|
public static final String PEP_DEVICE_LIST = PEP_PREFIX + ".devicelist";
|
|
public static final String PEP_BUNDLES = PEP_PREFIX + ".bundles";
|
|
|
|
public static final String LOGPREFIX = "AxolotlService";
|
|
|
|
public static final int NUM_KEYS_TO_PUBLISH = 10;
|
|
|
|
private final Account account;
|
|
private final XmppConnectionService mXmppConnectionService;
|
|
private final SQLiteAxolotlStore axolotlStore;
|
|
private final SessionMap sessions;
|
|
private final Map<Jid, Set<Integer>> deviceIds;
|
|
private final Map<String, XmppAxolotlMessage> messageCache;
|
|
private final FetchStatusMap fetchStatusMap;
|
|
private final SerialSingleThreadExecutor executor;
|
|
|
|
private static class AxolotlAddressMap<T> {
|
|
protected Map<String, Map<Integer, T>> map;
|
|
protected final Object MAP_LOCK = new Object();
|
|
|
|
public AxolotlAddressMap() {
|
|
this.map = new HashMap<>();
|
|
}
|
|
|
|
public void put(AxolotlAddress address, T value) {
|
|
synchronized (MAP_LOCK) {
|
|
Map<Integer, T> devices = map.get(address.getName());
|
|
if (devices == null) {
|
|
devices = new HashMap<>();
|
|
map.put(address.getName(), devices);
|
|
}
|
|
devices.put(address.getDeviceId(), value);
|
|
}
|
|
}
|
|
|
|
public T get(AxolotlAddress address) {
|
|
synchronized (MAP_LOCK) {
|
|
Map<Integer, T> devices = map.get(address.getName());
|
|
if (devices == null) {
|
|
return null;
|
|
}
|
|
return devices.get(address.getDeviceId());
|
|
}
|
|
}
|
|
|
|
public Map<Integer, T> getAll(AxolotlAddress address) {
|
|
synchronized (MAP_LOCK) {
|
|
Map<Integer, T> devices = map.get(address.getName());
|
|
if (devices == null) {
|
|
return new HashMap<>();
|
|
}
|
|
return devices;
|
|
}
|
|
}
|
|
|
|
public boolean hasAny(AxolotlAddress address) {
|
|
synchronized (MAP_LOCK) {
|
|
Map<Integer, T> devices = map.get(address.getName());
|
|
return devices != null && !devices.isEmpty();
|
|
}
|
|
}
|
|
|
|
public void clear() {
|
|
map.clear();
|
|
}
|
|
|
|
}
|
|
|
|
private static class SessionMap extends AxolotlAddressMap<XmppAxolotlSession> {
|
|
private final XmppConnectionService xmppConnectionService;
|
|
private final Account account;
|
|
|
|
public SessionMap(XmppConnectionService service, SQLiteAxolotlStore store, Account account) {
|
|
super();
|
|
this.xmppConnectionService = service;
|
|
this.account = account;
|
|
this.fillMap(store);
|
|
}
|
|
|
|
private void putDevicesForJid(String bareJid, List<Integer> deviceIds, SQLiteAxolotlStore store) {
|
|
for (Integer deviceId : deviceIds) {
|
|
AxolotlAddress axolotlAddress = new AxolotlAddress(bareJid, deviceId);
|
|
Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Building session for remote address: "+axolotlAddress.toString());
|
|
String fingerprint = store.loadSession(axolotlAddress).getSessionState().getRemoteIdentityKey().getFingerprint().replaceAll("\\s", "");
|
|
this.put(axolotlAddress, new XmppAxolotlSession(account, store, axolotlAddress, fingerprint));
|
|
}
|
|
}
|
|
|
|
private void fillMap(SQLiteAxolotlStore store) {
|
|
List<Integer> deviceIds = store.getSubDeviceSessions(account.getJid().toBareJid().toString());
|
|
putDevicesForJid(account.getJid().toBareJid().toString(), deviceIds, store);
|
|
for (Contact contact : account.getRoster().getContacts()) {
|
|
Jid bareJid = contact.getJid().toBareJid();
|
|
if (bareJid == null) {
|
|
continue; // FIXME: handle this?
|
|
}
|
|
String address = bareJid.toString();
|
|
deviceIds = store.getSubDeviceSessions(address);
|
|
putDevicesForJid(address, deviceIds, store);
|
|
}
|
|
|
|
}
|
|
|
|
@Override
|
|
public void put(AxolotlAddress address, XmppAxolotlSession value) {
|
|
super.put(address, value);
|
|
xmppConnectionService.syncRosterToDisk(account);
|
|
}
|
|
}
|
|
|
|
private static enum FetchStatus {
|
|
PENDING,
|
|
SUCCESS,
|
|
ERROR
|
|
}
|
|
|
|
private static class FetchStatusMap extends AxolotlAddressMap<FetchStatus> {
|
|
|
|
}
|
|
|
|
public static String getLogprefix(Account account) {
|
|
return LOGPREFIX+" ("+account.getJid().toBareJid().toString()+"): ";
|
|
}
|
|
|
|
public AxolotlService(Account account, XmppConnectionService connectionService) {
|
|
if (Security.getProvider("BC") == null) {
|
|
Security.addProvider(new BouncyCastleProvider());
|
|
}
|
|
this.mXmppConnectionService = connectionService;
|
|
this.account = account;
|
|
this.axolotlStore = new SQLiteAxolotlStore(this.account, this.mXmppConnectionService);
|
|
this.deviceIds = new HashMap<>();
|
|
this.messageCache = new HashMap<>();
|
|
this.sessions = new SessionMap(mXmppConnectionService, axolotlStore, account);
|
|
this.fetchStatusMap = new FetchStatusMap();
|
|
this.executor = new SerialSingleThreadExecutor();
|
|
}
|
|
|
|
public IdentityKey getOwnPublicKey() {
|
|
return axolotlStore.getIdentityKeyPair().getPublicKey();
|
|
}
|
|
|
|
public Set<IdentityKey> getKeysWithTrust(SQLiteAxolotlStore.Trust trust) {
|
|
return axolotlStore.getContactKeysWithTrust(account.getJid().toBareJid().toString(), trust);
|
|
}
|
|
|
|
public Set<IdentityKey> getKeysWithTrust(SQLiteAxolotlStore.Trust trust, Contact contact) {
|
|
return axolotlStore.getContactKeysWithTrust(contact.getJid().toBareJid().toString(), trust);
|
|
}
|
|
|
|
public long getNumTrustedKeys(Contact contact) {
|
|
return axolotlStore.getContactNumTrustedKeys(contact.getJid().toBareJid().toString());
|
|
}
|
|
|
|
private AxolotlAddress getAddressForJid(Jid jid) {
|
|
return new AxolotlAddress(jid.toString(), 0);
|
|
}
|
|
|
|
private Set<XmppAxolotlSession> findOwnSessions() {
|
|
AxolotlAddress ownAddress = getAddressForJid(account.getJid().toBareJid());
|
|
Set<XmppAxolotlSession> ownDeviceSessions = new HashSet<>(this.sessions.getAll(ownAddress).values());
|
|
return ownDeviceSessions;
|
|
}
|
|
|
|
private Set<XmppAxolotlSession> findSessionsforContact(Contact contact) {
|
|
AxolotlAddress contactAddress = getAddressForJid(contact.getJid());
|
|
Set<XmppAxolotlSession> sessions = new HashSet<>(this.sessions.getAll(contactAddress).values());
|
|
return sessions;
|
|
}
|
|
|
|
private boolean hasAny(Contact contact) {
|
|
AxolotlAddress contactAddress = getAddressForJid(contact.getJid());
|
|
return sessions.hasAny(contactAddress);
|
|
}
|
|
|
|
public void regenerateKeys() {
|
|
axolotlStore.regenerate();
|
|
sessions.clear();
|
|
fetchStatusMap.clear();
|
|
publishBundlesIfNeeded();
|
|
publishOwnDeviceIdIfNeeded();
|
|
}
|
|
|
|
public int getOwnDeviceId() {
|
|
return axolotlStore.getLocalRegistrationId();
|
|
}
|
|
|
|
public Set<Integer> getOwnDeviceIds() {
|
|
return this.deviceIds.get(account.getJid().toBareJid());
|
|
}
|
|
|
|
private void setTrustOnSessions(final Jid jid, @NonNull final Set<Integer> deviceIds,
|
|
final SQLiteAxolotlStore.Trust from,
|
|
final SQLiteAxolotlStore.Trust to) {
|
|
for(Integer deviceId:deviceIds) {
|
|
AxolotlAddress address = new AxolotlAddress(jid.toBareJid().toString(), deviceId);
|
|
XmppAxolotlSession session = sessions.get(address);
|
|
if (session != null && session.getFingerprint() != null
|
|
&& session.getTrust() == from) {
|
|
session.setTrust(to);
|
|
}
|
|
}
|
|
}
|
|
|
|
public void registerDevices(final Jid jid, @NonNull final Set<Integer> deviceIds) {
|
|
if(jid.toBareJid().equals(account.getJid().toBareJid())) {
|
|
if (deviceIds.contains(getOwnDeviceId())) {
|
|
deviceIds.remove(getOwnDeviceId());
|
|
}
|
|
for(Integer deviceId : deviceIds) {
|
|
AxolotlAddress ownDeviceAddress = new AxolotlAddress(jid.toBareJid().toString(),deviceId);
|
|
if(sessions.get(ownDeviceAddress) == null) {
|
|
buildSessionFromPEP(null, ownDeviceAddress, false);
|
|
}
|
|
}
|
|
}
|
|
Set<Integer> expiredDevices = new HashSet<>(axolotlStore.getSubDeviceSessions(jid.toBareJid().toString()));
|
|
expiredDevices.removeAll(deviceIds);
|
|
setTrustOnSessions(jid, expiredDevices, SQLiteAxolotlStore.Trust.TRUSTED,
|
|
SQLiteAxolotlStore.Trust.INACTIVE);
|
|
Set<Integer> newDevices = new HashSet<>(deviceIds);
|
|
setTrustOnSessions(jid, newDevices, SQLiteAxolotlStore.Trust.INACTIVE,
|
|
SQLiteAxolotlStore.Trust.TRUSTED);
|
|
this.deviceIds.put(jid, deviceIds);
|
|
mXmppConnectionService.keyStatusUpdated();
|
|
publishOwnDeviceIdIfNeeded();
|
|
}
|
|
|
|
public void wipeOtherPepDevices() {
|
|
Set<Integer> deviceIds = new HashSet<>();
|
|
deviceIds.add(getOwnDeviceId());
|
|
IqPacket publish = mXmppConnectionService.getIqGenerator().publishDeviceIds(deviceIds);
|
|
Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Wiping all other devices from Pep:" + publish);
|
|
mXmppConnectionService.sendIqPacket(account, publish, new OnIqPacketReceived() {
|
|
@Override
|
|
public void onIqPacketReceived(Account account, IqPacket packet) {
|
|
// TODO: implement this!
|
|
}
|
|
});
|
|
}
|
|
|
|
public void purgeKey(IdentityKey identityKey) {
|
|
axolotlStore.setFingerprintTrust(identityKey.getFingerprint().replaceAll("\\s",""), SQLiteAxolotlStore.Trust.COMPROMISED);
|
|
}
|
|
|
|
public void publishOwnDeviceIdIfNeeded() {
|
|
IqPacket packet = mXmppConnectionService.getIqGenerator().retrieveDeviceIds(account.getJid().toBareJid());
|
|
mXmppConnectionService.sendIqPacket(account, packet, new OnIqPacketReceived() {
|
|
@Override
|
|
public void onIqPacketReceived(Account account, IqPacket packet) {
|
|
Element item = mXmppConnectionService.getIqParser().getItem(packet);
|
|
Set<Integer> deviceIds = mXmppConnectionService.getIqParser().deviceIds(item);
|
|
if (deviceIds == null) {
|
|
deviceIds = new HashSet<Integer>();
|
|
}
|
|
if (!deviceIds.contains(getOwnDeviceId())) {
|
|
deviceIds.add(getOwnDeviceId());
|
|
IqPacket publish = mXmppConnectionService.getIqGenerator().publishDeviceIds(deviceIds);
|
|
Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Own device " + getOwnDeviceId() + " not in PEP devicelist. Publishing: " + publish);
|
|
mXmppConnectionService.sendIqPacket(account, publish, new OnIqPacketReceived() {
|
|
@Override
|
|
public void onIqPacketReceived(Account account, IqPacket packet) {
|
|
// TODO: implement this!
|
|
}
|
|
});
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
public void publishBundlesIfNeeded() {
|
|
IqPacket packet = mXmppConnectionService.getIqGenerator().retrieveBundlesForDevice(account.getJid().toBareJid(), getOwnDeviceId());
|
|
mXmppConnectionService.sendIqPacket(account, packet, new OnIqPacketReceived() {
|
|
@Override
|
|
public void onIqPacketReceived(Account account, IqPacket packet) {
|
|
PreKeyBundle bundle = mXmppConnectionService.getIqParser().bundle(packet);
|
|
Map<Integer, ECPublicKey> keys = mXmppConnectionService.getIqParser().preKeyPublics(packet);
|
|
boolean flush = false;
|
|
if (bundle == null) {
|
|
Log.w(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Received invalid bundle:" + packet);
|
|
bundle = new PreKeyBundle(-1, -1, -1 , null, -1, null, null, null);
|
|
flush = true;
|
|
}
|
|
if (keys == null) {
|
|
Log.w(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Received invalid prekeys:" + packet);
|
|
}
|
|
try {
|
|
boolean changed = false;
|
|
// Validate IdentityKey
|
|
IdentityKeyPair identityKeyPair = axolotlStore.getIdentityKeyPair();
|
|
if (flush || !identityKeyPair.getPublicKey().equals(bundle.getIdentityKey())) {
|
|
Log.i(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Adding own IdentityKey " + identityKeyPair.getPublicKey() + " to PEP.");
|
|
changed = true;
|
|
}
|
|
|
|
// Validate signedPreKeyRecord + ID
|
|
SignedPreKeyRecord signedPreKeyRecord;
|
|
int numSignedPreKeys = axolotlStore.loadSignedPreKeys().size();
|
|
try {
|
|
signedPreKeyRecord = axolotlStore.loadSignedPreKey(bundle.getSignedPreKeyId());
|
|
if ( flush
|
|
||!bundle.getSignedPreKey().equals(signedPreKeyRecord.getKeyPair().getPublicKey())
|
|
|| !Arrays.equals(bundle.getSignedPreKeySignature(), signedPreKeyRecord.getSignature())) {
|
|
Log.i(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Adding new signedPreKey with ID " + (numSignedPreKeys + 1) + " to PEP.");
|
|
signedPreKeyRecord = KeyHelper.generateSignedPreKey(identityKeyPair, numSignedPreKeys + 1);
|
|
axolotlStore.storeSignedPreKey(signedPreKeyRecord.getId(), signedPreKeyRecord);
|
|
changed = true;
|
|
}
|
|
} catch (InvalidKeyIdException e) {
|
|
Log.i(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Adding new signedPreKey with ID " + (numSignedPreKeys + 1) + " to PEP.");
|
|
signedPreKeyRecord = KeyHelper.generateSignedPreKey(identityKeyPair, numSignedPreKeys + 1);
|
|
axolotlStore.storeSignedPreKey(signedPreKeyRecord.getId(), signedPreKeyRecord);
|
|
changed = true;
|
|
}
|
|
|
|
// Validate PreKeys
|
|
Set<PreKeyRecord> preKeyRecords = new HashSet<>();
|
|
if (keys != null) {
|
|
for (Integer id : keys.keySet()) {
|
|
try {
|
|
PreKeyRecord preKeyRecord = axolotlStore.loadPreKey(id);
|
|
if (preKeyRecord.getKeyPair().getPublicKey().equals(keys.get(id))) {
|
|
preKeyRecords.add(preKeyRecord);
|
|
}
|
|
} catch (InvalidKeyIdException ignored) {
|
|
}
|
|
}
|
|
}
|
|
int newKeys = NUM_KEYS_TO_PUBLISH - preKeyRecords.size();
|
|
if (newKeys > 0) {
|
|
List<PreKeyRecord> newRecords = KeyHelper.generatePreKeys(
|
|
axolotlStore.getCurrentPreKeyId()+1, newKeys);
|
|
preKeyRecords.addAll(newRecords);
|
|
for (PreKeyRecord record : newRecords) {
|
|
axolotlStore.storePreKey(record.getId(), record);
|
|
}
|
|
changed = true;
|
|
Log.i(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Adding " + newKeys + " new preKeys to PEP.");
|
|
}
|
|
|
|
|
|
if(changed) {
|
|
IqPacket publish = mXmppConnectionService.getIqGenerator().publishBundles(
|
|
signedPreKeyRecord, axolotlStore.getIdentityKeyPair().getPublicKey(),
|
|
preKeyRecords, getOwnDeviceId());
|
|
Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account)+ ": Bundle " + getOwnDeviceId() + " in PEP not current. Publishing: " + publish);
|
|
mXmppConnectionService.sendIqPacket(account, publish, new OnIqPacketReceived() {
|
|
@Override
|
|
public void onIqPacketReceived(Account account, IqPacket packet) {
|
|
// TODO: implement this!
|
|
Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Published bundle, got: " + packet);
|
|
}
|
|
});
|
|
}
|
|
} catch (InvalidKeyException e) {
|
|
Log.e(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Failed to publish bundle " + getOwnDeviceId() + ", reason: " + e.getMessage());
|
|
return;
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
public boolean isContactAxolotlCapable(Contact contact) {
|
|
|
|
Jid jid = contact.getJid().toBareJid();
|
|
AxolotlAddress address = new AxolotlAddress(jid.toString(), 0);
|
|
return sessions.hasAny(address) ||
|
|
( deviceIds.containsKey(jid) && !deviceIds.get(jid).isEmpty());
|
|
}
|
|
public SQLiteAxolotlStore.Trust getFingerprintTrust(String fingerprint) {
|
|
return axolotlStore.getFingerprintTrust(fingerprint);
|
|
}
|
|
|
|
public void setFingerprintTrust(String fingerprint, SQLiteAxolotlStore.Trust trust) {
|
|
axolotlStore.setFingerprintTrust(fingerprint, trust);
|
|
}
|
|
|
|
private void buildSessionFromPEP(final Conversation conversation, final AxolotlAddress address, final boolean flushWaitingQueueAfterFetch) {
|
|
Log.i(Config.LOGTAG, AxolotlService.getLogprefix(account) + "Building new sesstion for " + address.getDeviceId());
|
|
|
|
try {
|
|
IqPacket bundlesPacket = mXmppConnectionService.getIqGenerator().retrieveBundlesForDevice(
|
|
Jid.fromString(address.getName()), address.getDeviceId());
|
|
Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Retrieving bundle: " + bundlesPacket);
|
|
mXmppConnectionService.sendIqPacket(account, bundlesPacket, new OnIqPacketReceived() {
|
|
private void finish() {
|
|
AxolotlAddress ownAddress = new AxolotlAddress(account.getJid().toBareJid().toString(),0);
|
|
if (!fetchStatusMap.getAll(ownAddress).containsValue(FetchStatus.PENDING)
|
|
&& !fetchStatusMap.getAll(address).containsValue(FetchStatus.PENDING)) {
|
|
if (flushWaitingQueueAfterFetch && conversation != null) {
|
|
conversation.findUnsentMessagesWithEncryption(Message.ENCRYPTION_AXOLOTL,
|
|
new Conversation.OnMessageFound() {
|
|
@Override
|
|
public void onMessageFound(Message message) {
|
|
processSending(message,false);
|
|
}
|
|
});
|
|
}
|
|
mXmppConnectionService.keyStatusUpdated();
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void onIqPacketReceived(Account account, IqPacket packet) {
|
|
Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Received preKey IQ packet, processing...");
|
|
final IqParser parser = mXmppConnectionService.getIqParser();
|
|
final List<PreKeyBundle> preKeyBundleList = parser.preKeys(packet);
|
|
final PreKeyBundle bundle = parser.bundle(packet);
|
|
if (preKeyBundleList.isEmpty() || bundle == null) {
|
|
Log.e(Config.LOGTAG, AxolotlService.getLogprefix(account)+"preKey IQ packet invalid: " + packet);
|
|
fetchStatusMap.put(address, FetchStatus.ERROR);
|
|
finish();
|
|
return;
|
|
}
|
|
Random random = new Random();
|
|
final PreKeyBundle preKey = preKeyBundleList.get(random.nextInt(preKeyBundleList.size()));
|
|
if (preKey == null) {
|
|
//should never happen
|
|
fetchStatusMap.put(address, FetchStatus.ERROR);
|
|
finish();
|
|
return;
|
|
}
|
|
|
|
final PreKeyBundle preKeyBundle = new PreKeyBundle(0, address.getDeviceId(),
|
|
preKey.getPreKeyId(), preKey.getPreKey(),
|
|
bundle.getSignedPreKeyId(), bundle.getSignedPreKey(),
|
|
bundle.getSignedPreKeySignature(), bundle.getIdentityKey());
|
|
|
|
axolotlStore.saveIdentity(address.getName(), bundle.getIdentityKey());
|
|
|
|
try {
|
|
SessionBuilder builder = new SessionBuilder(axolotlStore, address);
|
|
builder.process(preKeyBundle);
|
|
XmppAxolotlSession session = new XmppAxolotlSession(account, axolotlStore, address, bundle.getIdentityKey().getFingerprint().replaceAll("\\s", ""));
|
|
sessions.put(address, session);
|
|
fetchStatusMap.put(address, FetchStatus.SUCCESS);
|
|
} catch (UntrustedIdentityException|InvalidKeyException e) {
|
|
Log.e(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Error building session for " + address + ": "
|
|
+ e.getClass().getName() + ", " + e.getMessage());
|
|
fetchStatusMap.put(address, FetchStatus.ERROR);
|
|
}
|
|
|
|
finish();
|
|
}
|
|
});
|
|
} catch (InvalidJidException e) {
|
|
Log.e(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Got address with invalid jid: " + address.getName());
|
|
}
|
|
}
|
|
|
|
public Set<AxolotlAddress> findDevicesWithoutSession(final Conversation conversation) {
|
|
Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account) + "Finding devices without session for " + conversation.getContact().getJid().toBareJid());
|
|
Jid contactJid = conversation.getContact().getJid().toBareJid();
|
|
Set<AxolotlAddress> addresses = new HashSet<>();
|
|
if(deviceIds.get(contactJid) != null) {
|
|
for(Integer foreignId:this.deviceIds.get(contactJid)) {
|
|
AxolotlAddress address = new AxolotlAddress(contactJid.toString(), foreignId);
|
|
if(sessions.get(address) == null) {
|
|
IdentityKey identityKey = axolotlStore.loadSession(address).getSessionState().getRemoteIdentityKey();
|
|
if ( identityKey != null ) {
|
|
Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Already have session for " + address.toString() + ", adding to cache...");
|
|
XmppAxolotlSession session = new XmppAxolotlSession(account, axolotlStore, address, identityKey.getFingerprint().replaceAll("\\s", ""));
|
|
sessions.put(address, session);
|
|
} else {
|
|
Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account) + "Found device " + account.getJid().toBareJid() + ":" + foreignId);
|
|
addresses.add(new AxolotlAddress(contactJid.toString(), foreignId));
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
Log.w(Config.LOGTAG, AxolotlService.getLogprefix(account) + "Have no target devices in PEP!");
|
|
}
|
|
if(deviceIds.get(account.getJid().toBareJid()) != null) {
|
|
for(Integer ownId:this.deviceIds.get(account.getJid().toBareJid())) {
|
|
AxolotlAddress address = new AxolotlAddress(account.getJid().toBareJid().toString(), ownId);
|
|
if(sessions.get(address) == null) {
|
|
IdentityKey identityKey = axolotlStore.loadSession(address).getSessionState().getRemoteIdentityKey();
|
|
if ( identityKey != null ) {
|
|
Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Already have session for " + address.toString() + ", adding to cache...");
|
|
XmppAxolotlSession session = new XmppAxolotlSession(account, axolotlStore, address, identityKey.getFingerprint().replaceAll("\\s", ""));
|
|
sessions.put(address, session);
|
|
} else {
|
|
Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account) + "Found device " + account.getJid().toBareJid() + ":" + ownId);
|
|
addresses.add(new AxolotlAddress(account.getJid().toBareJid().toString(), ownId));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return addresses;
|
|
}
|
|
|
|
public boolean createSessionsIfNeeded(final Conversation conversation, final boolean flushWaitingQueueAfterFetch) {
|
|
Log.i(Config.LOGTAG, AxolotlService.getLogprefix(account) + "Creating axolotl sessions if needed...");
|
|
boolean newSessions = false;
|
|
Set<AxolotlAddress> addresses = findDevicesWithoutSession(conversation);
|
|
for (AxolotlAddress address : addresses) {
|
|
Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account) + "Processing device: " + address.toString());
|
|
FetchStatus status = fetchStatusMap.get(address);
|
|
if ( status == null || status == FetchStatus.ERROR ) {
|
|
fetchStatusMap.put(address, FetchStatus.PENDING);
|
|
this.buildSessionFromPEP(conversation, address, flushWaitingQueueAfterFetch);
|
|
newSessions = true;
|
|
} else {
|
|
Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Already fetching bundle for " + address.toString());
|
|
}
|
|
}
|
|
|
|
return newSessions;
|
|
}
|
|
|
|
public boolean hasPendingKeyFetches(Conversation conversation) {
|
|
AxolotlAddress ownAddress = new AxolotlAddress(account.getJid().toBareJid().toString(),0);
|
|
AxolotlAddress foreignAddress = new AxolotlAddress(conversation.getJid().toBareJid().toString(),0);
|
|
return fetchStatusMap.getAll(ownAddress).containsValue(FetchStatus.PENDING)
|
|
||fetchStatusMap.getAll(foreignAddress).containsValue(FetchStatus.PENDING);
|
|
|
|
}
|
|
|
|
@Nullable
|
|
public XmppAxolotlMessage encrypt(Message message ){
|
|
final String content;
|
|
if (message.hasFileOnRemoteHost()) {
|
|
content = message.getFileParams().url.toString();
|
|
} else {
|
|
content = message.getBody();
|
|
}
|
|
final XmppAxolotlMessage axolotlMessage;
|
|
try {
|
|
axolotlMessage = new XmppAxolotlMessage(message.getContact().getJid().toBareJid(),
|
|
getOwnDeviceId(), content);
|
|
} catch (CryptoFailedException e) {
|
|
Log.w(Config.LOGTAG, getLogprefix(account) + "Failed to encrypt message: " + e.getMessage());
|
|
return null;
|
|
}
|
|
|
|
if(findSessionsforContact(message.getContact()).isEmpty()) {
|
|
return null;
|
|
}
|
|
Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Building axolotl foreign keyElements...");
|
|
for (XmppAxolotlSession session : findSessionsforContact(message.getContact())) {
|
|
Log.v(Config.LOGTAG, AxolotlService.getLogprefix(account)+session.getRemoteAddress().toString());
|
|
axolotlMessage.addKeyElement(session.processSending(axolotlMessage.getInnerKey()));
|
|
}
|
|
Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Building axolotl own keyElements...");
|
|
for (XmppAxolotlSession session : findOwnSessions()) {
|
|
Log.v(Config.LOGTAG, AxolotlService.getLogprefix(account)+session.getRemoteAddress().toString());
|
|
axolotlMessage.addKeyElement(session.processSending(axolotlMessage.getInnerKey()));
|
|
}
|
|
|
|
return axolotlMessage;
|
|
}
|
|
|
|
private void processSending(final Message message, final boolean delay) {
|
|
executor.execute(new Runnable() {
|
|
@Override
|
|
public void run() {
|
|
XmppAxolotlMessage axolotlMessage = encrypt(message);
|
|
if (axolotlMessage == null) {
|
|
mXmppConnectionService.markMessage(message, Message.STATUS_SEND_FAILED);
|
|
//mXmppConnectionService.updateConversationUi();
|
|
} else {
|
|
Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Generated message, caching: " + message.getUuid());
|
|
messageCache.put(message.getUuid(), axolotlMessage);
|
|
mXmppConnectionService.resendMessage(message,delay);
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
public void prepareMessage(final Message message,final boolean delay) {
|
|
if (!messageCache.containsKey(message.getUuid())) {
|
|
boolean newSessions = createSessionsIfNeeded(message.getConversation(), true);
|
|
if (!newSessions) {
|
|
this.processSending(message,delay);
|
|
}
|
|
}
|
|
}
|
|
|
|
public XmppAxolotlMessage fetchAxolotlMessageFromCache(Message message) {
|
|
XmppAxolotlMessage axolotlMessage = messageCache.get(message.getUuid());
|
|
if (axolotlMessage != null) {
|
|
Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Cache hit: " + message.getUuid());
|
|
messageCache.remove(message.getUuid());
|
|
} else {
|
|
Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Cache miss: " + message.getUuid());
|
|
}
|
|
return axolotlMessage;
|
|
}
|
|
|
|
public XmppAxolotlMessage.XmppAxolotlPlaintextMessage processReceiving(XmppAxolotlMessage message) {
|
|
XmppAxolotlMessage.XmppAxolotlPlaintextMessage plaintextMessage = null;
|
|
AxolotlAddress senderAddress = new AxolotlAddress(message.getFrom().toString(),
|
|
message.getSenderDeviceId());
|
|
|
|
boolean newSession = false;
|
|
XmppAxolotlSession session = sessions.get(senderAddress);
|
|
if (session == null) {
|
|
Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Account: "+account.getJid()+" No axolotl session found while parsing received message " + message);
|
|
IdentityKey identityKey = axolotlStore.loadSession(senderAddress).getSessionState().getRemoteIdentityKey();
|
|
if ( identityKey != null ) {
|
|
session = new XmppAxolotlSession(account, axolotlStore, senderAddress, identityKey.getFingerprint().replaceAll("\\s", ""));
|
|
} else {
|
|
session = new XmppAxolotlSession(account, axolotlStore, senderAddress);
|
|
}
|
|
newSession = true;
|
|
}
|
|
|
|
for (XmppAxolotlMessage.XmppAxolotlKeyElement keyElement : message.getKeyElements()) {
|
|
if (keyElement.getRecipientDeviceId() == getOwnDeviceId()) {
|
|
Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Found axolotl keyElement matching own device ID, processing...");
|
|
byte[] payloadKey = session.processReceiving(keyElement);
|
|
if (payloadKey != null) {
|
|
Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Got payload key from axolotl keyElement. Decrypting message...");
|
|
try{
|
|
plaintextMessage = message.decrypt(session, payloadKey, session.getFingerprint());
|
|
} catch (CryptoFailedException e) {
|
|
Log.w(Config.LOGTAG, getLogprefix(account) + "Failed to decrypt message: " + e.getMessage());
|
|
break;
|
|
}
|
|
}
|
|
Integer preKeyId = session.getPreKeyId();
|
|
if (preKeyId != null) {
|
|
publishBundlesIfNeeded();
|
|
session.resetPreKeyId();
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (newSession && plaintextMessage != null) {
|
|
sessions.put(senderAddress, session);
|
|
}
|
|
|
|
return plaintextMessage;
|
|
}
|
|
}
|