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Migrate to new PEP layout 

Merge prekeys into bundle node
This commit is contained in:
Andreas Straub 2015-06-29 14:18:11 +02:00
parent 6492801b89
commit c1d23b2395
4 changed files with 158 additions and 148 deletions
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250
src/main/java/eu/siacs/conversations/crypto/axolotl/AxolotlService.java
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@ -30,6 +30,7 @@ import org.whispersystems.libaxolotl.state.SignedPreKeyRecord;
import org.whispersystems.libaxolotl.util.KeyHelper;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
@ -53,14 +54,16 @@ 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_PREKEYS = PEP_PREFIX + ".prekeys";
public static final String PEP_BUNDLE = PEP_PREFIX + ".bundle";
public static final String PEP_BUNDLES = PEP_PREFIX + ".bundles";
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 BundleMap bundleCache;
private final Map<Jid, Set<Integer>> deviceIds;
private int ownDeviceId;
public static class SQLiteAxolotlStore implements AxolotlStore {
@ -565,6 +568,7 @@ public class AxolotlService {
this.mXmppConnectionService = connectionService;
this.account = account;
this.axolotlStore = new SQLiteAxolotlStore(this.account, this.mXmppConnectionService);
this.deviceIds = new HashMap<>();
this.sessions = new SessionMap(axolotlStore, account);
this.bundleCache = new BundleMap();
this.ownDeviceId = axolotlStore.getLocalRegistrationId();
@ -607,80 +611,11 @@ public class AxolotlService {
return ownDeviceId;
}
public void fetchBundleIfNeeded(final Contact contact, final Integer deviceId) {
final AxolotlAddress address = new AxolotlAddress(contact.getJid().toString(), deviceId);
if (sessions.get(address) != null) {
return;
}
synchronized (bundleCache) {
PreKeyBundle bundle = bundleCache.get(address);
if (bundle == null) {
bundle = new PreKeyBundle(0, deviceId, 0, null, 0, null, null, null);
bundleCache.put(address, bundle);
}
if(bundle.getPreKey() == null) {
Log.d(Config.LOGTAG, "No preKey in cache, fetching...");
IqPacket prekeysPacket = mXmppConnectionService.getIqGenerator().retrievePreKeysForDevice(contact.getJid(), deviceId);
mXmppConnectionService.sendIqPacket(account, prekeysPacket, new OnIqPacketReceived() {
@Override
public void onIqPacketReceived(Account account, IqPacket packet) {
synchronized (bundleCache) {
Log.d(Config.LOGTAG, "Received preKey IQ packet, processing...");
final IqParser parser = mXmppConnectionService.getIqParser();
final PreKeyBundle bundle = bundleCache.get(address);
final List<PreKeyBundle> preKeyBundleList = parser.preKeys(packet);
if (preKeyBundleList.isEmpty()) {
Log.d(Config.LOGTAG, "preKey IQ packet invalid: " + packet);
return;
}
Random random = new Random();
final PreKeyBundle newBundle = preKeyBundleList.get(random.nextInt(preKeyBundleList.size()));
if (bundle == null || newBundle == null) {
//should never happen
return;
}
final PreKeyBundle mergedBundle = new PreKeyBundle(bundle.getRegistrationId(),
bundle.getDeviceId(), newBundle.getPreKeyId(), newBundle.getPreKey(),
bundle.getSignedPreKeyId(), bundle.getSignedPreKey(),
bundle.getSignedPreKeySignature(), bundle.getIdentityKey());
bundleCache.put(address, mergedBundle);
}
}
});
}
if(bundle.getIdentityKey() == null) {
Log.d(Config.LOGTAG, "No bundle in cache, fetching...");
IqPacket bundlePacket = mXmppConnectionService.getIqGenerator().retrieveBundleForDevice(contact.getJid(), deviceId);
mXmppConnectionService.sendIqPacket(account, bundlePacket, new OnIqPacketReceived() {
@Override
public void onIqPacketReceived(Account account, IqPacket packet) {
synchronized (bundleCache) {
Log.d(Config.LOGTAG, "Received bundle IQ packet, processing...");
final IqParser parser = mXmppConnectionService.getIqParser();
final PreKeyBundle bundle = bundleCache.get(address);
final PreKeyBundle newBundle = parser.bundle(packet);
if( bundle == null || newBundle == null ) {
Log.d(Config.LOGTAG, "bundle IQ packet invalid: " + packet);
//should never happen
return;
}
final PreKeyBundle mergedBundle = new PreKeyBundle(bundle.getRegistrationId(),
bundle.getDeviceId(), bundle.getPreKeyId(), bundle.getPreKey(),
newBundle.getSignedPreKeyId(), newBundle.getSignedPreKey(),
newBundle.getSignedPreKeySignature(), newBundle.getIdentityKey());
axolotlStore.saveIdentity(contact.getJid().toBareJid().toString(), newBundle.getIdentityKey());
bundleCache.put(address, mergedBundle);
}
}
});
}
public void registerDevices(final Jid jid, final Set<Integer> deviceIds) {
for(Integer i:deviceIds) {
Log.d(Config.LOGTAG, "Adding Device ID:"+ jid + ":"+i);
}
this.deviceIds.put(jid, deviceIds);
}
public void publishOwnDeviceIdIfNeeded() {
@ -689,14 +624,14 @@ public class AxolotlService {
@Override
public void onIqPacketReceived(Account account, IqPacket packet) {
Element item = mXmppConnectionService.getIqParser().getItem(packet);
List<Integer> deviceIds = mXmppConnectionService.getIqParser().deviceIds(item);
Set<Integer> deviceIds = mXmppConnectionService.getIqParser().deviceIds(item);
if (deviceIds == null) {
deviceIds = new ArrayList<>();
deviceIds = new HashSet<Integer>();
}
if (!deviceIds.contains(getOwnDeviceId())) {
Log.d(Config.LOGTAG, "Own device " + getOwnDeviceId() + " not in PEP devicelist. Publishing...");
deviceIds.add(getOwnDeviceId());
IqPacket publish = mXmppConnectionService.getIqGenerator().publishDeviceIds(deviceIds);
Log.d(Config.LOGTAG, "Own device " + getOwnDeviceId() + " not in PEP devicelist. Publishing: " + publish);
mXmppConnectionService.sendIqPacket(account, publish, new OnIqPacketReceived() {
@Override
public void onIqPacketReceived(Account account, IqPacket packet) {
@ -708,22 +643,68 @@ public class AxolotlService {
});
}
public void publishBundleIfNeeded() {
IqPacket packet = mXmppConnectionService.getIqGenerator().retrieveBundleForDevice(account.getJid().toBareJid(), ownDeviceId);
private boolean validateBundle(PreKeyBundle bundle) {
if (bundle == null || bundle.getIdentityKey() == null
|| bundle.getSignedPreKey() == null || bundle.getSignedPreKeySignature() == null) {
return false;
}
try {
SignedPreKeyRecord signedPreKeyRecord = axolotlStore.loadSignedPreKey(bundle.getSignedPreKeyId());
IdentityKey identityKey = axolotlStore.getIdentityKeyPair().getPublicKey();
Log.d(Config.LOGTAG,"own identity key:"+identityKey.getFingerprint()+", foreign: "+bundle.getIdentityKey().getFingerprint());
Log.d(Config.LOGTAG,"bundle: "+Boolean.toString(bundle.getSignedPreKey().equals(signedPreKeyRecord.getKeyPair().getPublicKey()))
+" " + Boolean.toString(Arrays.equals(bundle.getSignedPreKeySignature(), signedPreKeyRecord.getSignature()))
+" " + Boolean.toString( bundle.getIdentityKey().equals(identityKey)));
return bundle.getSignedPreKey().equals(signedPreKeyRecord.getKeyPair().getPublicKey())
&& Arrays.equals(bundle.getSignedPreKeySignature(), signedPreKeyRecord.getSignature())
&& bundle.getIdentityKey().equals(identityKey);
} catch (InvalidKeyIdException ignored) {
return false;
}
}
private boolean validatePreKeys(Map<Integer, ECPublicKey> keys) {
if(keys == null) { return false; }
for(Integer id:keys.keySet()) {
try {
PreKeyRecord preKeyRecord = axolotlStore.loadPreKey(id);
if(!preKeyRecord.getKeyPair().getPublicKey().equals(keys.get(id))) {
return false;
}
} catch (InvalidKeyIdException ignored) {
return false;
}
}
return true;
}
public void publishBundlesIfNeeded() {
IqPacket packet = mXmppConnectionService.getIqGenerator().retrieveBundlesForDevice(account.getJid().toBareJid(), ownDeviceId);
mXmppConnectionService.sendIqPacket(account, packet, new OnIqPacketReceived() {
@Override
public void onIqPacketReceived(Account account, IqPacket packet) {
PreKeyBundle bundle = mXmppConnectionService.getIqParser().bundle(packet);
if(bundle == null) {
Log.d(Config.LOGTAG, "Bundle " + getOwnDeviceId() + " not in PEP. Publishing...");
Map<Integer, ECPublicKey> keys = mXmppConnectionService.getIqParser().preKeyPublics(packet);
SignedPreKeyRecord signedPreKeyRecord;
List<PreKeyRecord> preKeyRecords;
if (!validateBundle(bundle) || keys.isEmpty() || !validatePreKeys(keys)) {
int numSignedPreKeys = axolotlStore.loadSignedPreKeys().size();
try {
SignedPreKeyRecord signedPreKeyRecord = KeyHelper.generateSignedPreKey(
signedPreKeyRecord = KeyHelper.generateSignedPreKey(
axolotlStore.getIdentityKeyPair(), numSignedPreKeys + 1);
axolotlStore.storeSignedPreKey(signedPreKeyRecord.getId(), signedPreKeyRecord);
IqPacket publish = mXmppConnectionService.getIqGenerator().publishBundle(
preKeyRecords = KeyHelper.generatePreKeys(
axolotlStore.getCurrentPreKeyId(), NUM_KEYS_TO_PUBLISH);
for (PreKeyRecord record : preKeyRecords) {
axolotlStore.storePreKey(record.getId(), record);
}
IqPacket publish = mXmppConnectionService.getIqGenerator().publishBundles(
signedPreKeyRecord, axolotlStore.getIdentityKeyPair().getPublicKey(),
ownDeviceId);
preKeyRecords, ownDeviceId);
Log.d(Config.LOGTAG, "Bundle " + getOwnDeviceId() + " not in PEP. Publishing: " + publish);
mXmppConnectionService.sendIqPacket(account, publish, new OnIqPacketReceived() {
@Override
public void onIqPacketReceived(Account account, IqPacket packet) {
@ -733,48 +714,83 @@ public class AxolotlService {
});
} catch (InvalidKeyException e) {
Log.e(Config.LOGTAG, "Failed to publish bundle " + getOwnDeviceId() + ", reason: " + e.getMessage());
return;
}
}
}
});
}
public void publishPreKeysIfNeeded() {
IqPacket packet = mXmppConnectionService.getIqGenerator().retrievePreKeysForDevice(account.getJid().toBareJid(), ownDeviceId);
mXmppConnectionService.sendIqPacket(account, packet, new OnIqPacketReceived() {
@Override
public void onIqPacketReceived(Account account, IqPacket packet) {
Map<Integer, ECPublicKey> keys = mXmppConnectionService.getIqParser().preKeyPublics(packet);
if(keys == null || keys.isEmpty()) {
Log.d(Config.LOGTAG, "Prekeys " + getOwnDeviceId() + " not in PEP. Publishing...");
List<PreKeyRecord> preKeyRecords = KeyHelper.generatePreKeys(
axolotlStore.getCurrentPreKeyId(), 100);
for(PreKeyRecord record : preKeyRecords) {
axolotlStore.storePreKey(record.getId(), record);
}
IqPacket publish = mXmppConnectionService.getIqGenerator().publishPreKeys(
preKeyRecords, ownDeviceId);
mXmppConnectionService.sendIqPacket(account, publish, new OnIqPacketReceived() {
@Override
public void onIqPacketReceived(Account account, IqPacket packet) {
Log.d(Config.LOGTAG, "Published prekeys, got: " + packet);
// TODO: implement this!
}
});
}
}
});
}
public boolean isContactAxolotlCapable(Contact contact) {
AxolotlAddress address = new AxolotlAddress(contact.getJid().toBareJid().toString(), 0);
return sessions.hasAny(address) || bundleCache.hasAny(address);
Jid jid = contact.getJid().toBareJid();
AxolotlAddress address = new AxolotlAddress(jid.toString(), 0);
return sessions.hasAny(address) ||
( deviceIds.containsKey(jid) && !deviceIds.get(jid).isEmpty());
}
public void initiateSynchronousSession(Contact contact) {
private void buildSessionFromPEP(final Conversation conversation, final AxolotlAddress address) {
Log.d(Config.LOGTAG, "Building new sesstion for " + address.getDeviceId());
try {
IqPacket bundlesPacket = mXmppConnectionService.getIqGenerator().retrieveBundlesForDevice(
Jid.fromString(address.getName()), address.getDeviceId());
Log.d(Config.LOGTAG, "Retrieving bundle: " + bundlesPacket);
mXmppConnectionService.sendIqPacket(account, bundlesPacket, new OnIqPacketReceived() {
@Override
public void onIqPacketReceived(Account account, IqPacket packet) {
Log.d(Config.LOGTAG, "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.d(Config.LOGTAG, "preKey IQ packet invalid: " + packet);
fetchStatusMap.put(address, FetchStatus.ERROR);
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);
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(axolotlStore, address);
sessions.put(address, session);
fetchStatusMap.put(address, FetchStatus.SUCCESS);
} catch (UntrustedIdentityException|InvalidKeyException e) {
Log.d(Config.LOGTAG, "Error building session for " + address + ": "
+ e.getClass().getName() + ", " + e.getMessage());
fetchStatusMap.put(address, FetchStatus.ERROR);
}
AxolotlAddress ownAddress = new AxolotlAddress(conversation.getAccount().getJid().toBareJid().toString(),0);
AxolotlAddress foreignAddress = new AxolotlAddress(conversation.getJid().toBareJid().toString(),0);
if (!fetchStatusMap.getAll(ownAddress).containsValue(FetchStatus.PENDING)
&& !fetchStatusMap.getAll(foreignAddress).containsValue(FetchStatus.PENDING)) {
conversation.findUnsentMessagesWithEncryption(Message.ENCRYPTION_AXOLOTL,
new Conversation.OnMessageFound() {
@Override
public void onMessageFound(Message message) {
processSending(message);
}
});
}
}
});
} catch (InvalidJidException e) {
Log.e(Config.LOGTAG,"Got address with invalid jid: " + address.getName());
}
}
private void createSessionsIfNeeded(Contact contact) throws NoSessionsCreatedException {

29
src/main/java/eu/siacs/conversations/generator/IqGenerator.java
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@ -10,6 +10,7 @@ import org.whispersystems.libaxolotl.state.SignedPreKeyRecord;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import eu.siacs.conversations.crypto.axolotl.AxolotlService;
import eu.siacs.conversations.entities.Account;
@ -131,23 +132,15 @@ public class IqGenerator extends AbstractGenerator {
return packet;
}
public IqPacket retrieveBundleForDevice(final Jid to, final int deviceid) {
final IqPacket packet = retrieve(AxolotlService.PEP_BUNDLE+":"+deviceid, null);
public IqPacket retrieveBundlesForDevice(final Jid to, final int deviceid) {
final IqPacket packet = retrieve(AxolotlService.PEP_BUNDLES+":"+deviceid, null);
if(to != null) {
packet.setTo(to);
}
return packet;
}
public IqPacket retrievePreKeysForDevice(final Jid to, final int deviceId) {
final IqPacket packet = retrieve(AxolotlService.PEP_PREKEYS+":"+deviceId, null);
if(to != null) {
packet.setTo(to);
}
return packet;
}
public IqPacket publishDeviceIds(final List<Integer> ids) {
public IqPacket publishDeviceIds(final Set<Integer> ids) {
final Element item = new Element("item");
final Element list = item.addChild("list", AxolotlService.PEP_PREFIX);
for(Integer id:ids) {
@ -158,7 +151,8 @@ public class IqGenerator extends AbstractGenerator {
return publish(AxolotlService.PEP_DEVICE_LIST, item);
}
public IqPacket publishBundle(final SignedPreKeyRecord signedPreKeyRecord, IdentityKey identityKey, final int deviceId) {
public IqPacket publishBundles(final SignedPreKeyRecord signedPreKeyRecord, final IdentityKey identityKey,
final List<PreKeyRecord> preKeyRecords, final int deviceId) {
final Element item = new Element("item");
final Element bundle = item.addChild("bundle", AxolotlService.PEP_PREFIX);
final Element signedPreKeyPublic = bundle.addChild("signedPreKeyPublic");
@ -170,19 +164,14 @@ public class IqGenerator extends AbstractGenerator {
final Element identityKeyElement = bundle.addChild("identityKey");
identityKeyElement.setContent(Base64.encodeToString(identityKey.serialize(), Base64.DEFAULT));
return publish(AxolotlService.PEP_BUNDLE+":"+deviceId, item);
}
public IqPacket publishPreKeys(final List<PreKeyRecord> prekeyList, final int deviceId) {
final Element item = new Element("item");
final Element prekeys = item.addChild("prekeys", AxolotlService.PEP_PREFIX);
for(PreKeyRecord preKeyRecord:prekeyList) {
final Element prekeys = bundle.addChild("prekeys", AxolotlService.PEP_PREFIX);
for(PreKeyRecord preKeyRecord:preKeyRecords) {
final Element prekey = prekeys.addChild("preKeyPublic");
prekey.setAttribute("preKeyId", preKeyRecord.getId());
prekey.setContent(Base64.encodeToString(preKeyRecord.getKeyPair().getPublicKey().serialize(), Base64.DEFAULT));
}
return publish(AxolotlService.PEP_PREKEYS+":"+deviceId, item);
return publish(AxolotlService.PEP_BUNDLES+":"+deviceId, item);
}
public IqPacket queryMessageArchiveManagement(final MessageArchiveService.Query mam) {

20
src/main/java/eu/siacs/conversations/parser/IqParser.java
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@ -12,8 +12,10 @@ import org.whispersystems.libaxolotl.state.PreKeyBundle;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import eu.siacs.conversations.Config;
import eu.siacs.conversations.entities.Account;
@ -94,8 +96,8 @@ public class IqParser extends AbstractParser implements OnIqPacketReceived {
return items.findChild("item");
}
public List<Integer> deviceIds(final Element item) {
List<Integer> deviceIds = new ArrayList<>();
public Set<Integer> deviceIds(final Element item) {
Set<Integer> deviceIds = new HashSet<>();
if (item == null) {
return null;
}
@ -165,14 +167,18 @@ public class IqParser extends AbstractParser implements OnIqPacketReceived {
public Map<Integer, ECPublicKey> preKeyPublics(final IqPacket packet) {
Map<Integer, ECPublicKey> preKeyRecords = new HashMap<>();
Element prekeysItem = getItem(packet);
if (prekeysItem == null) {
Log.d(Config.LOGTAG, "Couldn't find <item> in preKeyPublic IQ packet: " + packet);
Element item = getItem(packet);
if (item == null) {
Log.d(Config.LOGTAG, "Couldn't find <item> in bundle IQ packet: " + packet);
return null;
}
final Element prekeysElement = prekeysItem.findChild("prekeys");
final Element bundleElement = item.findChild("bundle");
if(bundleElement == null) {
return null;
}
final Element prekeysElement = bundleElement.findChild("prekeys");
if(prekeysElement == null) {
Log.d(Config.LOGTAG, "Couldn't find <prekeys> in preKeyPublic IQ packet: " + packet);
Log.d(Config.LOGTAG, "Couldn't find <prekeys> in bundle IQ packet: " + packet);
return null;
}
for(Element preKeyPublicElement : prekeysElement.getChildren()) {

3
src/main/java/eu/siacs/conversations/services/XmppConnectionService.java
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@ -275,8 +275,7 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
}
syncDirtyContacts(account);
account.getAxolotlService().publishOwnDeviceIdIfNeeded();
account.getAxolotlService().publishBundleIfNeeded();
account.getAxolotlService().publishPreKeysIfNeeded();
account.getAxolotlService().publishBundlesIfNeeded();
scheduleWakeUpCall(Config.PING_MAX_INTERVAL, account.getUuid().hashCode());
} else if (account.getStatus() == Account.State.OFFLINE) {