diff options
Diffstat (limited to 'src/main/java/eu/siacs/conversations/crypto/axolotl/AxolotlServiceImpl.java')
-rw-r--r-- | src/main/java/eu/siacs/conversations/crypto/axolotl/AxolotlServiceImpl.java | 1049 |
1 files changed, 0 insertions, 1049 deletions
diff --git a/src/main/java/eu/siacs/conversations/crypto/axolotl/AxolotlServiceImpl.java b/src/main/java/eu/siacs/conversations/crypto/axolotl/AxolotlServiceImpl.java deleted file mode 100644 index 281eb91f..00000000 --- a/src/main/java/eu/siacs/conversations/crypto/axolotl/AxolotlServiceImpl.java +++ /dev/null @@ -1,1049 +0,0 @@ -package eu.siacs.conversations.crypto.axolotl; - -import android.os.Bundle; -import android.security.KeyChain; -import android.support.annotation.NonNull; -import android.support.annotation.Nullable; -import android.util.Log; -import android.util.Pair; - -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.PrivateKey; -import java.security.Security; -import java.security.Signature; -import java.security.cert.X509Certificate; -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.CryptoHelper; -import eu.siacs.conversations.utils.SerialSingleThreadExecutor; -import eu.siacs.conversations.xml.Element; -import eu.siacs.conversations.xmpp.OnAdvancedStreamFeaturesLoaded; -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 AxolotlServiceImpl implements OnAdvancedStreamFeaturesLoaded, AxolotlService { - - public static final int publishTriesThreshold = 3; - - 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 int numPublishTriesOnEmptyPep = 0; - private boolean pepBroken = false; - - @Override - public void onAdvancedStreamFeaturesAvailable(Account account) { - if (account.getXmppConnection() != null && account.getXmppConnection().getFeatures().pep()) { - publishBundlesIfNeeded(true, false); - } else { - Log.d(Config.LOGTAG,account.getJid().toBareJid()+": skipping OMEMO initialization"); - } - } - - @Override - public boolean fetchMapHasErrors(List<Jid> jids) { - for(Jid jid : jids) { - if (deviceIds.get(jid) != null) { - for (Integer foreignId : this.deviceIds.get(jid)) { - AxolotlAddress address = new AxolotlAddress(jid.toString(), foreignId); - if (fetchStatusMap.getAll(address).containsValue(FetchStatus.ERROR)) { - return true; - } - } - } - } - return false; - } - - 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, AxolotlServiceImpl.getLogprefix(account) + "Building session for remote address: " + axolotlAddress.toString()); - IdentityKey identityKey = store.loadSession(axolotlAddress).getSessionState().getRemoteIdentityKey(); - if(Config.X509_VERIFICATION) { - X509Certificate certificate = store.getFingerprintCertificate(identityKey.getFingerprint().replaceAll("\\s", "")); - if (certificate != null) { - Bundle information = CryptoHelper.extractCertificateInformation(certificate); - try { - final String cn = information.getString("subject_cn"); - final Jid jid = Jid.fromString(bareJid); - Log.d(Config.LOGTAG,"setting common name for "+jid+" to "+cn); - account.getRoster().getContact(jid).setCommonName(cn); - } catch (final InvalidJidException ignored) { - //ignored - } - } - } - this.put(axolotlAddress, new XmppAxolotlSession(account, store, axolotlAddress, identityKey)); - } - } - - 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(); - String address = bareJid.toString(); - deviceIds = store.getSubDeviceSessions(address); - putDevicesForJid(address, deviceIds, store); - } - - } - - @Override - public void put(AxolotlAddress address, XmppAxolotlSession value) { - super.put(address, value); - value.setNotFresh(); - xmppConnectionService.syncRosterToDisk(account); - } - - public void put(XmppAxolotlSession session) { - this.put(session.getRemoteAddress(), session); - } - } - - private static class FetchStatusMap extends AxolotlAddressMap<FetchStatus> { - - } - - public static String getLogprefix(Account account) { - return LOGPREFIX + " (" + account.getJid().toBareJid().toString() + "): "; - } - - public AxolotlServiceImpl(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 String getOwnFingerprint() { - return axolotlStore.getIdentityKeyPair().getPublicKey().getFingerprint().replaceAll("\\s", ""); - } - - @Override - public Set<IdentityKey> getKeysWithTrust(XmppAxolotlSession.Trust trust) { - return axolotlStore.getContactKeysWithTrust(account.getJid().toBareJid().toString(), trust); - } - - @Override - public Set<IdentityKey> getKeysWithTrust(XmppAxolotlSession.Trust trust, Jid jid) { - return axolotlStore.getContactKeysWithTrust(jid.toBareJid().toString(), trust); - } - - @Override - public Set<IdentityKey> getKeysWithTrust(XmppAxolotlSession.Trust trust, List<Jid> jids) { - Set<IdentityKey> keys = new HashSet<>(); - for(Jid jid : jids) { - keys.addAll(axolotlStore.getContactKeysWithTrust(jid.toString(), trust)); - } - return keys; - } - - @Override - public long getNumTrustedKeys(Jid jid) { - return axolotlStore.getContactNumTrustedKeys(jid.toBareJid().toString()); - } - - @Override - public boolean anyTargetHasNoTrustedKeys(List<Jid> jids) { - for(Jid jid : jids) { - if (axolotlStore.getContactNumTrustedKeys(jid.toBareJid().toString()) == 0) { - return true; - } - } - return false; - } - - private AxolotlAddress getAddressForJid(Jid jid) { - return new AxolotlAddress(jid.toString(), 0); - } - - private Set<XmppAxolotlSession> findOwnSessions() { - AxolotlAddress ownAddress = getAddressForJid(account.getJid().toBareJid()); - return new HashSet<>(this.sessions.getAll(ownAddress).values()); - } - - private Set<XmppAxolotlSession> findSessionsForContact(Contact contact) { - AxolotlAddress contactAddress = getAddressForJid(contact.getJid()); - return new HashSet<>(this.sessions.getAll(contactAddress).values()); - } - - private Set<XmppAxolotlSession> findSessionsForConversation(Conversation conversation) { - HashSet<XmppAxolotlSession> sessions = new HashSet<>(); - for(Jid jid : conversation.getAcceptedCryptoTargets()) { - sessions.addAll(this.sessions.getAll(getAddressForJid(jid)).values()); - } - return sessions; - } - - public Set<String> getFingerprintsForOwnSessions() { - Set<String> fingerprints = new HashSet<>(); - for (XmppAxolotlSession session : findOwnSessions()) { - fingerprints.add(session.getFingerprint()); - } - return fingerprints; - } - - public Set<String> getFingerprintsForContact(final Contact contact) { - Set<String> fingerprints = new HashSet<>(); - for (XmppAxolotlSession session : findSessionsForContact(contact)) { - fingerprints.add(session.getFingerprint()); - } - return fingerprints; - } - - private boolean hasAny(Jid jid) { - return sessions.hasAny(getAddressForJid(jid)); - } - - public boolean isPepBroken() { - return this.pepBroken; - } - - public void resetBrokenness() { - this.pepBroken = false; - numPublishTriesOnEmptyPep = 0; - } - - public void regenerateKeys(boolean wipeOther) { - axolotlStore.regenerate(); - sessions.clear(); - fetchStatusMap.clear(); - publishBundlesIfNeeded(true, wipeOther); - } - - 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 XmppAxolotlSession.Trust from, - final XmppAxolotlSession.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.isEmpty()) { - Log.d(Config.LOGTAG, getLogprefix(account) + "Received non-empty own device list. Resetting publish attemps and pepBroken status."); - pepBroken = false; - numPublishTriesOnEmptyPep = 0; - } - if (deviceIds.contains(getOwnDeviceId())) { - deviceIds.remove(getOwnDeviceId()); - } else { - publishOwnDeviceId(deviceIds); - } - for (Integer deviceId : deviceIds) { - AxolotlAddress ownDeviceAddress = new AxolotlAddress(jid.toBareJid().toString(), deviceId); - if (sessions.get(ownDeviceAddress) == null) { - buildSessionFromPEP(ownDeviceAddress); - } - } - } - Set<Integer> expiredDevices = new HashSet<>(axolotlStore.getSubDeviceSessions(jid.toBareJid().toString())); - expiredDevices.removeAll(deviceIds); - setTrustOnSessions(jid, expiredDevices, XmppAxolotlSession.Trust.TRUSTED, - XmppAxolotlSession.Trust.INACTIVE_TRUSTED); - setTrustOnSessions(jid, expiredDevices, XmppAxolotlSession.Trust.TRUSTED_X509, - XmppAxolotlSession.Trust.INACTIVE_TRUSTED_X509); - setTrustOnSessions(jid, expiredDevices, XmppAxolotlSession.Trust.UNDECIDED, - XmppAxolotlSession.Trust.INACTIVE_UNDECIDED); - setTrustOnSessions(jid, expiredDevices, XmppAxolotlSession.Trust.UNTRUSTED, - XmppAxolotlSession.Trust.INACTIVE_UNTRUSTED); - Set<Integer> newDevices = new HashSet<>(deviceIds); - setTrustOnSessions(jid, newDevices, XmppAxolotlSession.Trust.INACTIVE_TRUSTED, - XmppAxolotlSession.Trust.TRUSTED); - setTrustOnSessions(jid, newDevices, XmppAxolotlSession.Trust.INACTIVE_TRUSTED_X509, - XmppAxolotlSession.Trust.TRUSTED_X509); - setTrustOnSessions(jid, newDevices, XmppAxolotlSession.Trust.INACTIVE_UNDECIDED, - XmppAxolotlSession.Trust.UNDECIDED); - setTrustOnSessions(jid, newDevices, XmppAxolotlSession.Trust.INACTIVE_UNTRUSTED, - XmppAxolotlSession.Trust.UNTRUSTED); - this.deviceIds.put(jid, deviceIds); - mXmppConnectionService.keyStatusUpdated(null); - } - - public void wipeOtherPepDevices() { - if (pepBroken) { - Log.d(Config.LOGTAG, getLogprefix(account) + "wipeOtherPepDevices called, but PEP is broken. Ignoring... "); - return; - } - Set<Integer> deviceIds = new HashSet<>(); - deviceIds.add(getOwnDeviceId()); - IqPacket publish = mXmppConnectionService.getIqGenerator().publishDeviceIds(deviceIds); - Log.d(Config.LOGTAG, AxolotlServiceImpl.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(final String fingerprint) { - axolotlStore.setFingerprintTrust(fingerprint.replaceAll("\\s", ""), XmppAxolotlSession.Trust.COMPROMISED); - } - - public void publishOwnDeviceIdIfNeeded() { - if (pepBroken) { - Log.d(Config.LOGTAG, getLogprefix(account) + "publishOwnDeviceIdIfNeeded called, but PEP is broken. Ignoring... "); - return; - } - IqPacket packet = mXmppConnectionService.getIqGenerator().retrieveDeviceIds(account.getJid().toBareJid()); - mXmppConnectionService.sendIqPacket(account, packet, new OnIqPacketReceived() { - @Override - public void onIqPacketReceived(Account account, IqPacket packet) { - if (packet.getType() == IqPacket.TYPE.TIMEOUT) { - Log.d(Config.LOGTAG, getLogprefix(account) + "Timeout received while retrieving own Device Ids."); - } else { - Element item = mXmppConnectionService.getIqParser().getItem(packet); - Set<Integer> deviceIds = mXmppConnectionService.getIqParser().deviceIds(item); - if (!deviceIds.contains(getOwnDeviceId())) { - publishOwnDeviceId(deviceIds); - } - } - } - }); - } - - public void publishOwnDeviceId(Set<Integer> deviceIds) { - Set<Integer> deviceIdsCopy = new HashSet<>(deviceIds); - if (!deviceIdsCopy.contains(getOwnDeviceId())) { - Log.d(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(account) + "Own device " + getOwnDeviceId() + " not in PEP devicelist."); - if (deviceIdsCopy.isEmpty()) { - if (numPublishTriesOnEmptyPep >= publishTriesThreshold) { - Log.w(Config.LOGTAG, getLogprefix(account) + "Own device publish attempt threshold exceeded, aborting..."); - pepBroken = true; - return; - } else { - numPublishTriesOnEmptyPep++; - Log.w(Config.LOGTAG, getLogprefix(account) + "Own device list empty, attempting to publish (try " + numPublishTriesOnEmptyPep + ")"); - } - } else { - numPublishTriesOnEmptyPep = 0; - } - deviceIdsCopy.add(getOwnDeviceId()); - IqPacket publish = mXmppConnectionService.getIqGenerator().publishDeviceIds(deviceIdsCopy); - mXmppConnectionService.sendIqPacket(account, publish, new OnIqPacketReceived() { - @Override - public void onIqPacketReceived(Account account, IqPacket packet) { - if (packet.getType() == IqPacket.TYPE.ERROR) { - pepBroken = true; - Log.d(Config.LOGTAG, getLogprefix(account) + "Error received while publishing own device id" + packet.findChild("error")); - } - } - }); - } - } - - public void publishDeviceVerificationAndBundle(final SignedPreKeyRecord signedPreKeyRecord, - final Set<PreKeyRecord> preKeyRecords, - final boolean announceAfter, - final boolean wipe) { - try { - IdentityKey axolotlPublicKey = axolotlStore.getIdentityKeyPair().getPublicKey(); - PrivateKey x509PrivateKey = KeyChain.getPrivateKey(mXmppConnectionService, account.getPrivateKeyAlias()); - X509Certificate[] chain = KeyChain.getCertificateChain(mXmppConnectionService, account.getPrivateKeyAlias()); - Signature verifier = Signature.getInstance("sha256WithRSA"); - verifier.initSign(x509PrivateKey,mXmppConnectionService.getRNG()); - verifier.update(axolotlPublicKey.serialize()); - byte[] signature = verifier.sign(); - IqPacket packet = mXmppConnectionService.getIqGenerator().publishVerification(signature, chain, getOwnDeviceId()); - Log.d(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(account) + ": publish verification for device "+getOwnDeviceId()); - mXmppConnectionService.sendIqPacket(account, packet, new OnIqPacketReceived() { - @Override - public void onIqPacketReceived(Account account, IqPacket packet) { - publishDeviceBundle(signedPreKeyRecord, preKeyRecords, announceAfter, wipe); - } - }); - } catch (Exception e) { - e.printStackTrace(); - } - } - - public void publishBundlesIfNeeded(final boolean announce, final boolean wipe) { - if (pepBroken) { - Log.d(Config.LOGTAG, getLogprefix(account) + "publishBundlesIfNeeded called, but PEP is broken. Ignoring... "); - return; - } - IqPacket packet = mXmppConnectionService.getIqGenerator().retrieveBundlesForDevice(account.getJid().toBareJid(), getOwnDeviceId()); - mXmppConnectionService.sendIqPacket(account, packet, new OnIqPacketReceived() { - @Override - public void onIqPacketReceived(Account account, IqPacket packet) { - - if (packet.getType() == IqPacket.TYPE.TIMEOUT) { - return; //ignore timeout. do nothing - } - - if (packet.getType() == IqPacket.TYPE.ERROR) { - Element error = packet.findChild("error"); - if (error == null || !error.hasChild("item-not-found")) { - pepBroken = true; - Log.w(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(account) + "request for device bundles came back with something other than item-not-found" + packet); - return; - } - } - - PreKeyBundle bundle = mXmppConnectionService.getIqParser().bundle(packet); - Map<Integer, ECPublicKey> keys = mXmppConnectionService.getIqParser().preKeyPublics(packet); - boolean flush = false; - if (bundle == null) { - Log.w(Config.LOGTAG, AxolotlServiceImpl.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, AxolotlServiceImpl.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, AxolotlServiceImpl.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, AxolotlServiceImpl.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, AxolotlServiceImpl.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, AxolotlServiceImpl.getLogprefix(account) + "Adding " + newKeys + " new preKeys to PEP."); - } - - - if (changed) { - if (account.getPrivateKeyAlias() != null && Config.X509_VERIFICATION) { - mXmppConnectionService.publishDisplayName(account); - publishDeviceVerificationAndBundle(signedPreKeyRecord, preKeyRecords, announce, wipe); - } else { - publishDeviceBundle(signedPreKeyRecord, preKeyRecords, announce, wipe); - } - } else { - Log.d(Config.LOGTAG, getLogprefix(account) + "Bundle " + getOwnDeviceId() + " in PEP was current"); - if (wipe) { - wipeOtherPepDevices(); - } else if (announce) { - Log.d(Config.LOGTAG, getLogprefix(account) + "Announcing device " + getOwnDeviceId()); - publishOwnDeviceIdIfNeeded(); - } - } - } catch (InvalidKeyException e) { - Log.e(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(account) + "Failed to publish bundle " + getOwnDeviceId() + ", reason: " + e.getMessage()); - } - } - }); - } - - private void publishDeviceBundle(SignedPreKeyRecord signedPreKeyRecord, - Set<PreKeyRecord> preKeyRecords, - final boolean announceAfter, - final boolean wipe) { - IqPacket publish = mXmppConnectionService.getIqGenerator().publishBundles( - signedPreKeyRecord, axolotlStore.getIdentityKeyPair().getPublicKey(), - preKeyRecords, getOwnDeviceId()); - Log.d(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(account) + ": Bundle " + getOwnDeviceId() + " in PEP not current. Publishing: " + publish); - mXmppConnectionService.sendIqPacket(account, publish, new OnIqPacketReceived() { - @Override - public void onIqPacketReceived(Account account, IqPacket packet) { - if (packet.getType() == IqPacket.TYPE.RESULT) { - Log.d(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(account) + "Successfully published bundle. "); - if (wipe) { - wipeOtherPepDevices(); - } else if (announceAfter) { - Log.d(Config.LOGTAG, getLogprefix(account) + "Announcing device " + getOwnDeviceId()); - publishOwnDeviceIdIfNeeded(); - } - } else if (packet.getType() == IqPacket.TYPE.ERROR) { - pepBroken = true; - Log.d(Config.LOGTAG, getLogprefix(account) + "Error received while publishing bundle: " + packet.findChild("error")); - } - } - }); - } - - @Override - public boolean isConversationAxolotlCapable(Conversation conversation) { - final List<Jid> jids = getCryptoTargets(conversation); - for(Jid jid : jids) { - if (!hasAny(jid) && (!deviceIds.containsKey(jid) || deviceIds.get(jid).isEmpty())) { - return false; - } - } - return jids.size() > 0; - } - - @Override - public List<Jid> getCryptoTargets(Conversation conversation) { - final List<Jid> jids; - if (conversation.getMode() == Conversation.MODE_SINGLE) { - jids = Arrays.asList(conversation.getJid().toBareJid()); - } else { - jids = conversation.getMucOptions().getMembers(); - jids.remove(account.getJid().toBareJid()); - } - return jids; - } - - public XmppAxolotlSession.Trust getFingerprintTrust(String fingerprint) { - return axolotlStore.getFingerprintTrust(fingerprint); - } - - public X509Certificate getFingerprintCertificate(String fingerprint) { - return axolotlStore.getFingerprintCertificate(fingerprint); - } - - public void setFingerprintTrust(String fingerprint, XmppAxolotlSession.Trust trust) { - axolotlStore.setFingerprintTrust(fingerprint, trust); - } - - private void verifySessionWithPEP(final XmppAxolotlSession session) { - Log.d(Config.LOGTAG, "trying to verify fresh session (" + session.getRemoteAddress().getName() + ") with pep"); - final AxolotlAddress address = session.getRemoteAddress(); - final IdentityKey identityKey = session.getIdentityKey(); - try { - IqPacket packet = mXmppConnectionService.getIqGenerator().retrieveVerificationForDevice(Jid.fromString(address.getName()), address.getDeviceId()); - mXmppConnectionService.sendIqPacket(account, packet, new OnIqPacketReceived() { - @Override - public void onIqPacketReceived(Account account, IqPacket packet) { - Pair<X509Certificate[],byte[]> verification = mXmppConnectionService.getIqParser().verification(packet); - if (verification != null) { - try { - Signature verifier = Signature.getInstance("sha256WithRSA"); - verifier.initVerify(verification.first[0]); - verifier.update(identityKey.serialize()); - if (verifier.verify(verification.second)) { - try { - mXmppConnectionService.getMemorizingTrustManager().getNonInteractive().checkClientTrusted(verification.first, "RSA"); - String fingerprint = session.getFingerprint(); - Log.d(Config.LOGTAG, "verified session with x.509 signature. fingerprint was: "+fingerprint); - setFingerprintTrust(fingerprint, XmppAxolotlSession.Trust.TRUSTED_X509); - axolotlStore.setFingerprintCertificate(fingerprint, verification.first[0]); - fetchStatusMap.put(address, FetchStatus.SUCCESS_VERIFIED); - Bundle information = CryptoHelper.extractCertificateInformation(verification.first[0]); - try { - final String cn = information.getString("subject_cn"); - final Jid jid = Jid.fromString(address.getName()); - Log.d(Config.LOGTAG,"setting common name for "+jid+" to "+cn); - account.getRoster().getContact(jid).setCommonName(cn); - } catch (final InvalidJidException ignored) { - //ignored - } - finishBuildingSessionsFromPEP(address); - return; - } catch (Exception e) { - Log.d(Config.LOGTAG,"could not verify certificate"); - } - } - } catch (Exception e) { - Log.d(Config.LOGTAG, "error during verification " + e.getMessage()); - } - } else { - Log.d(Config.LOGTAG,"no verification found"); - } - fetchStatusMap.put(address, FetchStatus.SUCCESS); - finishBuildingSessionsFromPEP(address); - } - }); - } catch (InvalidJidException e) { - fetchStatusMap.put(address, FetchStatus.SUCCESS); - finishBuildingSessionsFromPEP(address); - } - } - - private void finishBuildingSessionsFromPEP(final AxolotlAddress address) { - AxolotlAddress ownAddress = new AxolotlAddress(account.getJid().toBareJid().toString(), 0); - if (!fetchStatusMap.getAll(ownAddress).containsValue(FetchStatus.PENDING) - && !fetchStatusMap.getAll(address).containsValue(FetchStatus.PENDING)) { - FetchStatus report = null; - if (fetchStatusMap.getAll(ownAddress).containsValue(FetchStatus.SUCCESS_VERIFIED) - | fetchStatusMap.getAll(address).containsValue(FetchStatus.SUCCESS_VERIFIED)) { - report = FetchStatus.SUCCESS_VERIFIED; - } else if (fetchStatusMap.getAll(ownAddress).containsValue(FetchStatus.ERROR) - || fetchStatusMap.getAll(address).containsValue(FetchStatus.ERROR)) { - report = FetchStatus.ERROR; - } - mXmppConnectionService.keyStatusUpdated(report); - } - } - - private void buildSessionFromPEP(final AxolotlAddress address) { - Log.i(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(account) + "Building new sesstion for " + address.toString()); - if (address.getDeviceId() == getOwnDeviceId()) { - throw new AssertionError("We should NEVER build a session with ourselves. What happened here?!"); - } - - try { - IqPacket bundlesPacket = mXmppConnectionService.getIqGenerator().retrieveBundlesForDevice( - Jid.fromString(address.getName()), address.getDeviceId()); - Log.d(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(account) + "Retrieving bundle: " + bundlesPacket); - mXmppConnectionService.sendIqPacket(account, bundlesPacket, new OnIqPacketReceived() { - - @Override - public void onIqPacketReceived(Account account, IqPacket packet) { - if (packet.getType() == IqPacket.TYPE.TIMEOUT) { - fetchStatusMap.put(address, FetchStatus.TIMEOUT); - } else if (packet.getType() == IqPacket.TYPE.RESULT) { - Log.d(Config.LOGTAG, AxolotlServiceImpl.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, AxolotlServiceImpl.getLogprefix(account) + "preKey IQ packet invalid: " + packet); - fetchStatusMap.put(address, FetchStatus.ERROR); - finishBuildingSessionsFromPEP(address); - 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); - finishBuildingSessionsFromPEP(address); - return; - } - - final PreKeyBundle preKeyBundle = new PreKeyBundle(0, address.getDeviceId(), - preKey.getPreKeyId(), preKey.getPreKey(), - bundle.getSignedPreKeyId(), bundle.getSignedPreKey(), - bundle.getSignedPreKeySignature(), bundle.getIdentityKey()); - - try { - SessionBuilder builder = new SessionBuilder(axolotlStore, address); - builder.process(preKeyBundle); - XmppAxolotlSession session = new XmppAxolotlSession(account, axolotlStore, address, bundle.getIdentityKey()); - sessions.put(address, session); - if (Config.X509_VERIFICATION) { - verifySessionWithPEP(session); - } else { - fetchStatusMap.put(address, FetchStatus.SUCCESS); - finishBuildingSessionsFromPEP(address); - } - } catch (UntrustedIdentityException | InvalidKeyException e) { - Log.e(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(account) + "Error building session for " + address + ": " - + e.getClass().getName() + ", " + e.getMessage()); - fetchStatusMap.put(address, FetchStatus.ERROR); - finishBuildingSessionsFromPEP(address); - } - } else { - fetchStatusMap.put(address, FetchStatus.ERROR); - Log.d(Config.LOGTAG, getLogprefix(account) + "Error received while building session:" + packet.findChild("error")); - finishBuildingSessionsFromPEP(address); - } - } - }); - } catch (InvalidJidException e) { - Log.e(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(account) + "Got address with invalid jid: " + address.getName()); - } - } - - public Set<AxolotlAddress> findDevicesWithoutSession(final Conversation conversation) { - Set<AxolotlAddress> addresses = new HashSet<>(); - for(Jid jid : getCryptoTargets(conversation)) { - Log.d(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(account) + "Finding devices without session for " + jid); - if (deviceIds.get(jid) != null) { - for (Integer foreignId : this.deviceIds.get(jid)) { - AxolotlAddress address = new AxolotlAddress(jid.toString(), foreignId); - if (sessions.get(address) == null) { - IdentityKey identityKey = axolotlStore.loadSession(address).getSessionState().getRemoteIdentityKey(); - if (identityKey != null) { - Log.d(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(account) + "Already have session for " + address.toString() + ", adding to cache..."); - XmppAxolotlSession session = new XmppAxolotlSession(account, axolotlStore, address, identityKey); - sessions.put(address, session); - } else { - Log.d(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(account) + "Found device " + jid + ":" + foreignId); - if (fetchStatusMap.get(address) != FetchStatus.ERROR) { - addresses.add(address); - } else { - Log.d(Config.LOGTAG, getLogprefix(account) + "skipping over " + address + " because it's broken"); - } - } - } - } - } else { - Log.w(Config.LOGTAG, AxolotlServiceImpl.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, AxolotlServiceImpl.getLogprefix(account) + "Already have session for " + address.toString() + ", adding to cache..."); - XmppAxolotlSession session = new XmppAxolotlSession(account, axolotlStore, address, identityKey); - sessions.put(address, session); - } else { - Log.d(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(account) + "Found device " + account.getJid().toBareJid() + ":" + ownId); - if (fetchStatusMap.get(address) != FetchStatus.ERROR) { - addresses.add(address); - } else { - Log.d(Config.LOGTAG,getLogprefix(account)+"skipping over "+address+" because it's broken"); - } - } - } - } - } - - return addresses; - } - - public boolean createSessionsIfNeeded(final Conversation conversation) { - Log.i(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(account) + "Creating axolotl sessions if needed..."); - boolean newSessions = false; - Set<AxolotlAddress> addresses = findDevicesWithoutSession(conversation); - for (AxolotlAddress address : addresses) { - Log.d(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(account) + "Processing device: " + address.toString()); - FetchStatus status = fetchStatusMap.get(address); - if (status == null || status == FetchStatus.TIMEOUT) { - fetchStatusMap.put(address, FetchStatus.PENDING); - this.buildSessionFromPEP(address); - newSessions = true; - } else if (status == FetchStatus.PENDING) { - newSessions = true; - } else { - Log.d(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(account) + "Already fetching bundle for " + address.toString()); - } - } - - return newSessions; - } - - public boolean trustedSessionVerified(final Conversation conversation) { - Set<XmppAxolotlSession> sessions = findSessionsForConversation(conversation); - sessions.addAll(findOwnSessions()); - boolean verified = false; - for(XmppAxolotlSession session : sessions) { - if (session.getTrust().trusted()) { - if (session.getTrust() == XmppAxolotlSession.Trust.TRUSTED_X509) { - verified = true; - } else { - return false; - } - } - } - return verified; - } - - @Override - public boolean hasPendingKeyFetches(Account account, List<Jid> jids) { - AxolotlAddress ownAddress = new AxolotlAddress(account.getJid().toBareJid().toString(), 0); - if (fetchStatusMap.getAll(ownAddress).containsValue(FetchStatus.PENDING)) { - return true; - } - for(Jid jid : jids) { - AxolotlAddress foreignAddress = new AxolotlAddress(jid.toBareJid().toString(), 0); - if (fetchStatusMap.getAll(foreignAddress).containsValue(FetchStatus.PENDING)) { - return true; - } - } - return false; - } - - @Nullable - private XmppAxolotlMessage buildHeader(Conversation conversation) { - final XmppAxolotlMessage axolotlMessage = new XmppAxolotlMessage( - account.getJid().toBareJid(), getOwnDeviceId()); - - Set<XmppAxolotlSession> remoteSessions = findSessionsForConversation(conversation); - Set<XmppAxolotlSession> ownSessions = findOwnSessions(); - if (remoteSessions.isEmpty()) { - return null; - } - Log.d(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(account) + "Building axolotl foreign keyElements..."); - for (XmppAxolotlSession session : remoteSessions) { - Log.v(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(account) + session.getRemoteAddress().toString()); - axolotlMessage.addDevice(session); - } - Log.d(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(account) + "Building axolotl own keyElements..."); - for (XmppAxolotlSession session : ownSessions) { - Log.v(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(account) + session.getRemoteAddress().toString()); - axolotlMessage.addDevice(session); - } - - return axolotlMessage; - } - - @Nullable - public XmppAxolotlMessage encrypt(Message message) { - XmppAxolotlMessage axolotlMessage = buildHeader(message.getConversation()); - - if (axolotlMessage != null) { - final String content; - if (message.hasFileOnRemoteHost()) { - content = message.getFileParams().url.toString(); - } else { - content = message.getBody(); - } - try { - axolotlMessage.encrypt(content); - } catch (CryptoFailedException e) { - Log.w(Config.LOGTAG, getLogprefix(account) + "Failed to encrypt message: " + e.getMessage()); - return null; - } - } - - return axolotlMessage; - } - - public void preparePayloadMessage(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, AxolotlServiceImpl.getLogprefix(account) + "Generated message, caching: " + message.getUuid()); - messageCache.put(message.getUuid(), axolotlMessage); - mXmppConnectionService.resendMessage(message, delay); - } - } - }); - } - - @Override - public void prepareKeyTransportMessage(final Conversation conversation, final OnMessageCreatedCallback onMessageCreatedCallback) { - executor.execute(new Runnable() { - @Override - public void run() { - XmppAxolotlMessage axolotlMessage = buildHeader(conversation); - onMessageCreatedCallback.run(axolotlMessage); - } - }); - } - - public XmppAxolotlMessage fetchAxolotlMessageFromCache(Message message) { - XmppAxolotlMessage axolotlMessage = messageCache.get(message.getUuid()); - if (axolotlMessage != null) { - Log.d(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(account) + "Cache hit: " + message.getUuid()); - messageCache.remove(message.getUuid()); - } else { - Log.d(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(account) + "Cache miss: " + message.getUuid()); - } - return axolotlMessage; - } - - private XmppAxolotlSession recreateUncachedSession(AxolotlAddress address) { - IdentityKey identityKey = axolotlStore.loadSession(address).getSessionState().getRemoteIdentityKey(); - return (identityKey != null) - ? new XmppAxolotlSession(account, axolotlStore, address, identityKey) - : null; - } - - private XmppAxolotlSession getReceivingSession(XmppAxolotlMessage message) { - AxolotlAddress senderAddress = new AxolotlAddress(message.getFrom().toString(), - message.getSenderDeviceId()); - XmppAxolotlSession session = sessions.get(senderAddress); - if (session == null) { - Log.d(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(account) + "Account: " + account.getJid() + " No axolotl session found while parsing received message " + message); - session = recreateUncachedSession(senderAddress); - if (session == null) { - session = new XmppAxolotlSession(account, axolotlStore, senderAddress); - } - } - return session; - } - - public XmppAxolotlMessage.XmppAxolotlPlaintextMessage processReceivingPayloadMessage(XmppAxolotlMessage message) { - XmppAxolotlMessage.XmppAxolotlPlaintextMessage plaintextMessage = null; - - XmppAxolotlSession session = getReceivingSession(message); - try { - plaintextMessage = message.decrypt(session, getOwnDeviceId()); - Integer preKeyId = session.getPreKeyId(); - if (preKeyId != null) { - publishBundlesIfNeeded(false, false); - session.resetPreKeyId(); - } - } catch (CryptoFailedException e) { - Log.w(Config.LOGTAG, getLogprefix(account) + "Failed to decrypt message: " + e.getMessage()); - } - - if (session.isFresh() && plaintextMessage != null) { - putFreshSession(session); - } - - return plaintextMessage; - } - - public XmppAxolotlMessage.XmppAxolotlKeyTransportMessage processReceivingKeyTransportMessage(XmppAxolotlMessage message) { - XmppAxolotlMessage.XmppAxolotlKeyTransportMessage keyTransportMessage; - - XmppAxolotlSession session = getReceivingSession(message); - keyTransportMessage = message.getParameters(session, getOwnDeviceId()); - - if (session.isFresh() && keyTransportMessage != null) { - putFreshSession(session); - } - - return keyTransportMessage; - } - - private void putFreshSession(XmppAxolotlSession session) { - Log.d(Config.LOGTAG,"put fresh session"); - sessions.put(session); - if (Config.X509_VERIFICATION) { - if (session.getIdentityKey() != null) { - verifySessionWithPEP(session); - } else { - Log.e(Config.LOGTAG,account.getJid().toBareJid()+": identity key was empty after reloading for x509 verification"); - } - } - } -} |