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Diffstat (limited to 'src/main/java/eu/siacs/conversations/crypto/axolotl/AxolotlService.java')
-rw-r--r--src/main/java/eu/siacs/conversations/crypto/axolotl/AxolotlService.java1075
1 files changed, 0 insertions, 1075 deletions
diff --git a/src/main/java/eu/siacs/conversations/crypto/axolotl/AxolotlService.java b/src/main/java/eu/siacs/conversations/crypto/axolotl/AxolotlService.java
deleted file mode 100644
index 9e54c0c7d..000000000
--- a/src/main/java/eu/siacs/conversations/crypto/axolotl/AxolotlService.java
+++ /dev/null
@@ -1,1075 +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 AxolotlService implements OnAdvancedStreamFeaturesLoaded {
-
- 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_DEVICE_LIST_NOTIFY = PEP_DEVICE_LIST + "+notify";
- public static final String PEP_BUNDLES = PEP_PREFIX + ".bundles";
- public static final String PEP_VERIFICATION = PEP_PREFIX + ".verification";
-
- public static final String LOGPREFIX = "AxolotlService";
-
- public static final int NUM_KEYS_TO_PUBLISH = 100;
- 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 (Config.supportOmemo()
- && account.getXmppConnection() != null
- && account.getXmppConnection().getFeatures().pep()) {
- publishBundlesIfNeeded(true, false);
- } else {
- Log.d(Config.LOGTAG,account.getJid().toBareJid()+": skipping OMEMO initialization");
- }
- }
-
- 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, AxolotlService.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);
- }
- }
-
- public enum FetchStatus {
- PENDING,
- SUCCESS,
- SUCCESS_VERIFIED,
- TIMEOUT,
- ERROR
- }
-
- private static class FetchStatusMap extends AxolotlAddressMap<FetchStatus> {
-
- public void clearErrorFor(Jid jid) {
- synchronized (MAP_LOCK) {
- Map<Integer, FetchStatus> devices = this.map.get(jid.toBareJid().toString());
- if (devices == null) {
- return;
- }
- for(Map.Entry<Integer, FetchStatus> entry : devices.entrySet()) {
- if (entry.getValue() == FetchStatus.ERROR) {
- Log.d(Config.LOGTAG,"resetting error for "+jid.toBareJid()+"("+entry.getKey()+")");
- entry.setValue(FetchStatus.TIMEOUT);
- }
- }
- }
- }
- }
-
- 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 String getOwnFingerprint() {
- return axolotlStore.getIdentityKeyPair().getPublicKey().getFingerprint().replaceAll("\\s", "");
- }
-
- public Set<IdentityKey> getKeysWithTrust(XmppAxolotlSession.Trust trust) {
- return axolotlStore.getContactKeysWithTrust(account.getJid().toBareJid().toString(), trust);
- }
-
- public Set<IdentityKey> getKeysWithTrust(XmppAxolotlSession.Trust trust, Jid jid) {
- return axolotlStore.getContactKeysWithTrust(jid.toBareJid().toString(), trust);
- }
-
- 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;
- }
-
- public long getNumTrustedKeys(Jid jid) {
- return axolotlStore.getContactNumTrustedKeys(jid.toBareJid().toString());
- }
-
- 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 clearErrorsInFetchStatusMap(Jid jid) {
- fetchStatusMap.clearErrorFor(jid);
- }
-
- 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 attempts 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, 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(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, AxolotlService.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, AxolotlService.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, AxolotlService.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, 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) {
- 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, AxolotlService.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, 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) {
- if (packet.getType() == IqPacket.TYPE.RESULT) {
- Log.d(Config.LOGTAG, AxolotlService.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"));
- }
- }
- });
- }
-
- 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;
- }
-
- 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();
- }
- 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, AxolotlService.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, AxolotlService.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, 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);
- 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, AxolotlService.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, AxolotlService.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, AxolotlService.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, AxolotlService.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, AxolotlService.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, 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);
- sessions.put(address, session);
- } else {
- Log.d(Config.LOGTAG, AxolotlService.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, 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.TIMEOUT) {
- fetchStatusMap.put(address, FetchStatus.PENDING);
- this.buildSessionFromPEP(address);
- newSessions = true;
- } else if (status == FetchStatus.PENDING) {
- newSessions = true;
- } else {
- Log.d(Config.LOGTAG, AxolotlService.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;
- }
-
- 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, AxolotlService.getLogprefix(account) + "Building axolotl foreign keyElements...");
- for (XmppAxolotlSession session : remoteSessions) {
- Log.v(Config.LOGTAG, AxolotlService.getLogprefix(account) + session.getRemoteAddress().toString());
- axolotlMessage.addDevice(session);
- }
- Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account) + "Building axolotl own keyElements...");
- for (XmppAxolotlSession session : ownSessions) {
- Log.v(Config.LOGTAG, AxolotlService.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, AxolotlService.getLogprefix(account) + "Generated message, caching: " + message.getUuid());
- messageCache.put(message.getUuid(), axolotlMessage);
- mXmppConnectionService.resendMessage(message, delay);
- }
- }
- });
- }
-
- 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, 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;
- }
-
- 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, AxolotlService.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");
- }
- }
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-17 23:21:11 +0000