Overhauled Message tagging
Messages are now tagged with the IdentityKey fingerprint of the originating session. IdentityKeys have one of three trust states: undecided (default), trusted, and untrusted/not yet trusted.
This commit is contained in:
Andreas Straub
parent
7f918542c8
commit
d173913eba
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@ -85,6 +85,7 @@ public class AxolotlService {
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public static final String DEVICE_ID = "device_id";
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public static final String ID = "id";
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public static final String KEY = "key";
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public static final String FINGERPRINT = "fingerprint";
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public static final String NAME = "name";
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public static final String TRUSTED = "trusted";
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public static final String OWN = "ownkey";
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@ -99,6 +100,23 @@ public class AxolotlService {
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private final int localRegistrationId;
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private int currentPreKeyId = 0;
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public enum Trust {
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UNDECIDED, // 0
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TRUSTED,
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UNTRUSTED;
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public String toString() {
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switch(this){
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case UNDECIDED:
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return "Trust undecided";
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case TRUSTED:
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return "Trusted";
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case UNTRUSTED:
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default:
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return "Untrusted";
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}
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}
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};
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private static IdentityKeyPair generateIdentityKeyPair() {
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Log.i(Config.LOGTAG, AxolotlService.LOGPREFIX+" : "+"Generating axolotl IdentityKeyPair...");
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@ -242,11 +260,17 @@ public class AxolotlService {
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*/
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@Override
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public boolean isTrustedIdentity(String name, IdentityKey identityKey) {
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//Set<IdentityKey> trustedKeys = mXmppConnectionService.databaseBackend.loadIdentityKeys(account, name);
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//return trustedKeys.isEmpty() || trustedKeys.contains(identityKey);
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return true;
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}
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public Trust getFingerprintTrust(String name, String fingerprint) {
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return mXmppConnectionService.databaseBackend.isIdentityKeyTrusted(account, name, fingerprint);
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}
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public void setFingerprintTrust(String name, String fingerprint, Trust trust) {
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mXmppConnectionService.databaseBackend.setIdentityKeyTrust(account, name, fingerprint, trust);
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}
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// --------------------------------------
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// SessionStore
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// --------------------------------------
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@ -325,14 +349,6 @@ public class AxolotlService {
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new AxolotlAddress(name, 0));
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}
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public boolean isTrustedSession(AxolotlAddress address) {
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return mXmppConnectionService.databaseBackend.isTrustedSession(this.account, address);
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}
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public void setTrustedSession(AxolotlAddress address, boolean trusted) {
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mXmppConnectionService.databaseBackend.setTrustedSession(this.account, address, trusted);
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}
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// --------------------------------------
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// PreKeyStore
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// --------------------------------------
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@ -453,27 +469,22 @@ public class AxolotlService {
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public static class XmppAxolotlSession {
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private final SessionCipher cipher;
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private boolean isTrusted = false;
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private Integer preKeyId = null;
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private final SQLiteAxolotlStore sqLiteAxolotlStore;
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private final AxolotlAddress remoteAddress;
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private final Account account;
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private String fingerprint = null;
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public XmppAxolotlSession(Account account, SQLiteAxolotlStore store, AxolotlAddress remoteAddress, String fingerprint) {
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this(account, store, remoteAddress);
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this.fingerprint = fingerprint;
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}
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public XmppAxolotlSession(Account account, SQLiteAxolotlStore store, AxolotlAddress remoteAddress) {
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this.cipher = new SessionCipher(store, remoteAddress);
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this.remoteAddress = remoteAddress;
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this.sqLiteAxolotlStore = store;
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this.account = account;
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this.isTrusted = sqLiteAxolotlStore.isTrustedSession(remoteAddress);
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}
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public void trust() {
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sqLiteAxolotlStore.setTrustedSession(remoteAddress, true);
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this.isTrusted = true;
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}
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public boolean isTrusted() {
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return this.isTrusted;
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}
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public Integer getPreKeyId() {
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@ -481,19 +492,30 @@ public class AxolotlService {
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}
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public void resetPreKeyId() {
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preKeyId = null;
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}
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public String getFingerprint() {
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return fingerprint;
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}
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public byte[] processReceiving(XmppAxolotlMessage.XmppAxolotlMessageHeader incomingHeader) {
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byte[] plaintext = null;
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try {
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try {
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PreKeyWhisperMessage message = new PreKeyWhisperMessage(incomingHeader.getContents());
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Log.i(Config.LOGTAG, AxolotlService.getLogprefix(account)+"PreKeyWhisperMessage received, new session ID:" + message.getSignedPreKeyId() + "/" + message.getPreKeyId());
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String fingerprint = message.getIdentityKey().getFingerprint().replaceAll("\\s", "");
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if (this.fingerprint != null && !this.fingerprint.equals(fingerprint)) {
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Log.e(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Had session with fingerprint "+ this.fingerprint+", received message with fingerprint "+fingerprint);
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} else {
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this.fingerprint = fingerprint;
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plaintext = cipher.decrypt(message);
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if (message.getPreKeyId().isPresent()) {
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preKeyId = message.getPreKeyId().get();
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}
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}
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} catch (InvalidMessageException | InvalidVersionException e) {
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Log.i(Config.LOGTAG, AxolotlService.getLogprefix(account)+"WhisperMessage received");
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WhisperMessage message = new WhisperMessage(incomingHeader.getContents());
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@ -582,7 +604,9 @@ public class AxolotlService {
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List<Integer> deviceIDs = store.getSubDeviceSessions(address);
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for (Integer deviceId : deviceIDs) {
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AxolotlAddress axolotlAddress = new AxolotlAddress(address, deviceId);
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this.put(axolotlAddress, new XmppAxolotlSession(account, store, axolotlAddress));
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Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Building session for remote address: "+axolotlAddress.toString());
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String fingerprint = store.loadSession(axolotlAddress).getSessionState().getRemoteIdentityKey().getFingerprint().replaceAll("\\s", "");
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this.put(axolotlAddress, new XmppAxolotlSession(account, store, axolotlAddress, fingerprint));
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}
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}
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}
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@ -619,18 +643,6 @@ public class AxolotlService {
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return axolotlStore.getIdentityKeyPair().getPublicKey();
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}
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public void trustSession(AxolotlAddress counterpart) {
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XmppAxolotlSession session = sessions.get(counterpart);
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if (session != null) {
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session.trust();
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}
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}
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public boolean isTrustedSession(AxolotlAddress counterpart) {
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XmppAxolotlSession session = sessions.get(counterpart);
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return session != null && session.isTrusted();
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}
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private AxolotlAddress getAddressForJid(Jid jid) {
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return new AxolotlAddress(jid.toString(), 0);
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}
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@ -808,11 +820,19 @@ public class AxolotlService {
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}
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public boolean isContactAxolotlCapable(Contact contact) {
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Jid jid = contact.getJid().toBareJid();
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AxolotlAddress address = new AxolotlAddress(jid.toString(), 0);
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return sessions.hasAny(address) ||
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( deviceIds.containsKey(jid) && !deviceIds.get(jid).isEmpty());
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}
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public SQLiteAxolotlStore.Trust getFingerprintTrust(String name, String fingerprint) {
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return axolotlStore.getFingerprintTrust(name, fingerprint);
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}
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public void setFingerprintTrust(String name, String fingerprint, SQLiteAxolotlStore.Trust trust) {
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axolotlStore.setFingerprintTrust(name, fingerprint, trust);
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}
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private void buildSessionFromPEP(final Conversation conversation, final AxolotlAddress address) {
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Log.i(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Building new sesstion for " + address.getDeviceId());
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@ -851,7 +871,7 @@ public class AxolotlService {
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try {
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SessionBuilder builder = new SessionBuilder(axolotlStore, address);
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builder.process(preKeyBundle);
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XmppAxolotlSession session = new XmppAxolotlSession(account, axolotlStore, address);
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XmppAxolotlSession session = new XmppAxolotlSession(account, axolotlStore, address, bundle.getIdentityKey().getFingerprint().replaceAll("\\s", ""));
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sessions.put(address, session);
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fetchStatusMap.put(address, FetchStatus.SUCCESS);
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} catch (UntrustedIdentityException|InvalidKeyException e) {
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@ -1003,7 +1023,7 @@ public class AxolotlService {
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byte[] payloadKey = session.processReceiving(header);
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if (payloadKey != null) {
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Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Got payload key from axolotl header. Decrypting message...");
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plaintextMessage = message.decrypt(session, payloadKey);
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plaintextMessage = message.decrypt(session, payloadKey, session.getFingerprint());
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}
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Integer preKeyId = session.getPreKeyId();
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if (preKeyId != null) {
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@ -67,10 +67,12 @@ public class XmppAxolotlMessage {
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public static class XmppAxolotlPlaintextMessage {
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private final AxolotlService.XmppAxolotlSession session;
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private final String plaintext;
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private final String fingerprint;
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public XmppAxolotlPlaintextMessage(AxolotlService.XmppAxolotlSession session, String plaintext) {
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public XmppAxolotlPlaintextMessage(AxolotlService.XmppAxolotlSession session, String plaintext, String fingerprint) {
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this.session = session;
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this.plaintext = plaintext;
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this.fingerprint = fingerprint;
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}
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public String getPlaintext() {
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@ -81,6 +83,9 @@ public class XmppAxolotlMessage {
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return session;
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}
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public String getFingerprint() {
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return fingerprint;
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}
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}
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public XmppAxolotlMessage(Jid from, Element axolotlMessage) {
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@ -167,7 +172,7 @@ public class XmppAxolotlMessage {
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}
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public XmppAxolotlPlaintextMessage decrypt(AxolotlService.XmppAxolotlSession session, byte[] key) {
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public XmppAxolotlPlaintextMessage decrypt(AxolotlService.XmppAxolotlSession session, byte[] key, String fingerprint) {
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XmppAxolotlPlaintextMessage plaintextMessage = null;
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try {
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@ -178,7 +183,7 @@ public class XmppAxolotlMessage {
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cipher.init(Cipher.DECRYPT_MODE, keySpec, ivSpec);
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String plaintext = new String(cipher.doFinal(ciphertext));
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plaintextMessage = new XmppAxolotlPlaintextMessage(session, plaintext);
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plaintextMessage = new XmppAxolotlPlaintextMessage(session, plaintext, fingerprint);
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} catch (NoSuchAlgorithmException | NoSuchPaddingException | InvalidKeyException
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| InvalidAlgorithmParameterException | IllegalBlockSizeException
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@ -54,6 +54,7 @@ public class Message extends AbstractEntity {
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public static final String REMOTE_MSG_ID = "remoteMsgId";
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public static final String SERVER_MSG_ID = "serverMsgId";
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public static final String RELATIVE_FILE_PATH = "relativeFilePath";
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public static final String FINGERPRINT = "axolotl_fingerprint";
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public static final String ME_COMMAND = "/me ";
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@ -67,7 +68,6 @@ public class Message extends AbstractEntity {
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protected int encryption;
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protected int status;
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protected int type;
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private AxolotlService.XmppAxolotlSession axolotlSession = null;
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protected String relativeFilePath;
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protected boolean read = true;
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protected String remoteMsgId = null;
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@ -76,6 +76,7 @@ public class Message extends AbstractEntity {
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protected Transferable transferable = null;
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private Message mNextMessage = null;
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private Message mPreviousMessage = null;
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private String axolotlFingerprint = null;
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private Message() {
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@ -97,6 +98,7 @@ public class Message extends AbstractEntity {
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TYPE_TEXT,
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null,
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null,
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null,
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null);
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this.conversation = conversation;
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}
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@ -104,7 +106,7 @@ public class Message extends AbstractEntity {
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private Message(final String uuid, final String conversationUUid, final Jid counterpart,
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final Jid trueCounterpart, final String body, final long timeSent,
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final int encryption, final int status, final int type, final String remoteMsgId,
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final String relativeFilePath, final String serverMsgId) {
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final String relativeFilePath, final String serverMsgId, final String fingerprint) {
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this.uuid = uuid;
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this.conversationUuid = conversationUUid;
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this.counterpart = counterpart;
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@ -117,6 +119,7 @@ public class Message extends AbstractEntity {
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this.remoteMsgId = remoteMsgId;
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this.relativeFilePath = relativeFilePath;
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this.serverMsgId = serverMsgId;
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this.axolotlFingerprint = fingerprint;
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}
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public static Message fromCursor(Cursor cursor) {
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@ -153,7 +156,8 @@ public class Message extends AbstractEntity {
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cursor.getInt(cursor.getColumnIndex(TYPE)),
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cursor.getString(cursor.getColumnIndex(REMOTE_MSG_ID)),
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cursor.getString(cursor.getColumnIndex(RELATIVE_FILE_PATH)),
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cursor.getString(cursor.getColumnIndex(SERVER_MSG_ID)));
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cursor.getString(cursor.getColumnIndex(SERVER_MSG_ID)),
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cursor.getString(cursor.getColumnIndex(FINGERPRINT)));
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}
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public static Message createStatusMessage(Conversation conversation, String body) {
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@ -187,6 +191,7 @@ public class Message extends AbstractEntity {
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values.put(REMOTE_MSG_ID, remoteMsgId);
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values.put(RELATIVE_FILE_PATH, relativeFilePath);
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values.put(SERVER_MSG_ID, serverMsgId);
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values.put(FINGERPRINT, axolotlFingerprint);
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return values;
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}
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@ -667,11 +672,7 @@ public class Message extends AbstractEntity {
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public int height = 0;
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}
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public boolean isTrusted() {
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return this.axolotlSession != null && this.axolotlSession.isTrusted();
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}
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public void setAxolotlSession(AxolotlService.XmppAxolotlSession session) {
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this.axolotlSession = session;
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public void setAxolotlFingerprint(String fingerprint) {
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this.axolotlFingerprint = fingerprint;
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}
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}
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@ -106,7 +106,8 @@ public class MessageParser extends AbstractParser implements
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XmppAxolotlMessage.XmppAxolotlPlaintextMessage plaintextMessage = service.processReceiving(xmppAxolotlMessage);
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if(plaintextMessage != null) {
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finishedMessage = new Message(conversation, plaintextMessage.getPlaintext(), Message.ENCRYPTION_AXOLOTL, status);
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finishedMessage.setAxolotlSession(plaintextMessage.getSession());
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finishedMessage.setAxolotlFingerprint(plaintextMessage.getFingerprint());
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Log.d(Config.LOGTAG, AxolotlService.getLogprefix(finishedMessage.getConversation().getAccount())+" Received Message with session fingerprint: "+plaintextMessage.getFingerprint());
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}
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return finishedMessage;
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@ -82,7 +82,6 @@ public class DatabaseBackend extends SQLiteOpenHelper {
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+ AxolotlService.SQLiteAxolotlStore.ACCOUNT + " TEXT, "
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+ AxolotlService.SQLiteAxolotlStore.NAME + " TEXT, "
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+ AxolotlService.SQLiteAxolotlStore.DEVICE_ID + " INTEGER, "
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+ AxolotlService.SQLiteAxolotlStore.TRUSTED + " INTEGER, "
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+ AxolotlService.SQLiteAxolotlStore.KEY + " TEXT, FOREIGN KEY("
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+ AxolotlService.SQLiteAxolotlStore.ACCOUNT
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+ ") REFERENCES " + Account.TABLENAME + "(" + Account.UUID + ") ON DELETE CASCADE, "
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@ -97,6 +96,8 @@ public class DatabaseBackend extends SQLiteOpenHelper {
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+ AxolotlService.SQLiteAxolotlStore.ACCOUNT + " TEXT, "
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+ AxolotlService.SQLiteAxolotlStore.NAME + " TEXT, "
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+ AxolotlService.SQLiteAxolotlStore.OWN + " INTEGER, "
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+ AxolotlService.SQLiteAxolotlStore.FINGERPRINT + " TEXT PRIMARY KEY ON CONFLICT IGNORE, "
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+ AxolotlService.SQLiteAxolotlStore.TRUSTED + " INTEGER, "
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+ AxolotlService.SQLiteAxolotlStore.KEY + " TEXT, FOREIGN KEY("
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+ AxolotlService.SQLiteAxolotlStore.ACCOUNT
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+ ") REFERENCES " + Account.TABLENAME + "(" + Account.UUID + ") ON DELETE CASCADE "
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@ -132,6 +133,7 @@ public class DatabaseBackend extends SQLiteOpenHelper {
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+ Message.STATUS + " NUMBER," + Message.TYPE + " NUMBER, "
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+ Message.RELATIVE_FILE_PATH + " TEXT, "
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+ Message.SERVER_MSG_ID + " TEXT, "
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+ Message.FINGERPRINT + " TEXT, "
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+ Message.REMOTE_MSG_ID + " TEXT, FOREIGN KEY("
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+ Message.CONVERSATION + ") REFERENCES "
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+ Conversation.TABLENAME + "(" + Conversation.UUID
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@ -284,6 +286,8 @@ public class DatabaseBackend extends SQLiteOpenHelper {
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}
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if (oldVersion < 15 && newVersion >= 15) {
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recreateAxolotlDb();
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db.execSQL("ALTER TABLE " + Message.TABLENAME + " ADD COLUMN "
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+ Message.FINGERPRINT + " TEXT");
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}
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}
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@ -645,28 +649,6 @@ public class DatabaseBackend extends SQLiteOpenHelper {
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args);
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}
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public boolean isTrustedSession(Account account, AxolotlAddress contact) {
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boolean trusted = false;
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Cursor cursor = getCursorForSession(account, contact);
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if(cursor.getCount() != 0) {
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cursor.moveToFirst();
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trusted = cursor.getInt(cursor.getColumnIndex(
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AxolotlService.SQLiteAxolotlStore.TRUSTED)) > 0;
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}
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cursor.close();
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return trusted;
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}
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public void setTrustedSession(Account account, AxolotlAddress contact, boolean trusted) {
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SQLiteDatabase db = this.getWritableDatabase();
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ContentValues values = new ContentValues();
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values.put(AxolotlService.SQLiteAxolotlStore.NAME, contact.getName());
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values.put(AxolotlService.SQLiteAxolotlStore.DEVICE_ID, contact.getDeviceId());
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values.put(AxolotlService.SQLiteAxolotlStore.ACCOUNT, account.getUuid());
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values.put(AxolotlService.SQLiteAxolotlStore.TRUSTED, trusted?1:0);
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db.insert(AxolotlService.SQLiteAxolotlStore.SESSION_TABLENAME, null, values);
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}
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|
||||
private Cursor getCursorForPreKey(Account account, int preKeyId) {
|
||||
SQLiteDatabase db = this.getReadableDatabase();
|
||||
String[] columns = {AxolotlService.SQLiteAxolotlStore.KEY};
|
||||
|
|
@ -796,17 +778,28 @@ public class DatabaseBackend extends SQLiteOpenHelper {
|
|||
}
|
||||
|
||||
private Cursor getIdentityKeyCursor(Account account, String name, boolean own) {
|
||||
return getIdentityKeyCursor(account, name, own, null);
|
||||
}
|
||||
|
||||
private Cursor getIdentityKeyCursor(Account account, String name, boolean own, String fingerprint) {
|
||||
final SQLiteDatabase db = this.getReadableDatabase();
|
||||
String[] columns = {AxolotlService.SQLiteAxolotlStore.KEY};
|
||||
String[] selectionArgs = {account.getUuid(),
|
||||
name,
|
||||
own?"1":"0"};
|
||||
String[] columns = {AxolotlService.SQLiteAxolotlStore.TRUSTED,
|
||||
AxolotlService.SQLiteAxolotlStore.KEY};
|
||||
ArrayList<String> selectionArgs = new ArrayList<>(4);
|
||||
selectionArgs.add(account.getUuid());
|
||||
selectionArgs.add(name);
|
||||
selectionArgs.add(own?"1":"0");
|
||||
String selectionString = AxolotlService.SQLiteAxolotlStore.ACCOUNT + " = ? AND "
|
||||
+ AxolotlService.SQLiteAxolotlStore.NAME + " = ? AND "
|
||||
+ AxolotlService.SQLiteAxolotlStore.OWN + " = ? ";
|
||||
if (fingerprint != null){
|
||||
selectionArgs.add(fingerprint);
|
||||
selectionString += "AND " +AxolotlService.SQLiteAxolotlStore.FINGERPRINT + " = ? ";
|
||||
}
|
||||
Cursor cursor = db.query(AxolotlService.SQLiteAxolotlStore.IDENTITIES_TABLENAME,
|
||||
columns,
|
||||
AxolotlService.SQLiteAxolotlStore.ACCOUNT + " = ? AND "
|
||||
+ AxolotlService.SQLiteAxolotlStore.NAME + " = ? AND "
|
||||
+ AxolotlService.SQLiteAxolotlStore.OWN + " = ? ",
|
||||
selectionArgs,
|
||||
selectionString,
|
||||
selectionArgs.toArray(new String[selectionArgs.size()]),
|
||||
null, null, null);
|
||||
|
||||
return cursor;
|
||||
|
|
@ -844,22 +837,52 @@ public class DatabaseBackend extends SQLiteOpenHelper {
|
|||
return identityKeys;
|
||||
}
|
||||
|
||||
private void storeIdentityKey(Account account, String name, boolean own, String base64Serialized) {
|
||||
private void storeIdentityKey(Account account, String name, boolean own, String fingerprint, String base64Serialized) {
|
||||
SQLiteDatabase db = this.getWritableDatabase();
|
||||
ContentValues values = new ContentValues();
|
||||
values.put(AxolotlService.SQLiteAxolotlStore.ACCOUNT, account.getUuid());
|
||||
values.put(AxolotlService.SQLiteAxolotlStore.NAME, name);
|
||||
values.put(AxolotlService.SQLiteAxolotlStore.OWN, own ? 1 : 0);
|
||||
values.put(AxolotlService.SQLiteAxolotlStore.FINGERPRINT, fingerprint);
|
||||
values.put(AxolotlService.SQLiteAxolotlStore.KEY, base64Serialized);
|
||||
db.insert(AxolotlService.SQLiteAxolotlStore.IDENTITIES_TABLENAME, null, values);
|
||||
}
|
||||
|
||||
public AxolotlService.SQLiteAxolotlStore.Trust isIdentityKeyTrusted(Account account, String name, String fingerprint) {
|
||||
Cursor cursor = getIdentityKeyCursor(account, name, false, fingerprint);
|
||||
AxolotlService.SQLiteAxolotlStore.Trust trust = null;
|
||||
if (cursor.getCount() > 0) {
|
||||
cursor.moveToFirst();
|
||||
int trustValue = cursor.getInt(cursor.getColumnIndex(AxolotlService.SQLiteAxolotlStore.TRUSTED));
|
||||
trust = AxolotlService.SQLiteAxolotlStore.Trust.values()[trustValue];
|
||||
}
|
||||
cursor.close();
|
||||
return trust;
|
||||
}
|
||||
|
||||
public boolean setIdentityKeyTrust(Account account, String name, String fingerprint, AxolotlService.SQLiteAxolotlStore.Trust trust) {
|
||||
SQLiteDatabase db = this.getWritableDatabase();
|
||||
String[] selectionArgs = {
|
||||
account.getUuid(),
|
||||
name,
|
||||
fingerprint
|
||||
};
|
||||
ContentValues values = new ContentValues();
|
||||
values.put(AxolotlService.SQLiteAxolotlStore.TRUSTED, trust.ordinal());
|
||||
int rows = db.update(AxolotlService.SQLiteAxolotlStore.IDENTITIES_TABLENAME, values,
|
||||
AxolotlService.SQLiteAxolotlStore.ACCOUNT + " = ? "
|
||||
+ AxolotlService.SQLiteAxolotlStore.NAME + " = ? "
|
||||
+ AxolotlService.SQLiteAxolotlStore.FINGERPRINT + " = ? ",
|
||||
selectionArgs);
|
||||
return rows == 1;
|
||||
}
|
||||
|
||||
public void storeIdentityKey(Account account, String name, IdentityKey identityKey) {
|
||||
storeIdentityKey(account, name, false, Base64.encodeToString(identityKey.serialize(), Base64.DEFAULT));
|
||||
storeIdentityKey(account, name, false, identityKey.getFingerprint().replaceAll("\\s", ""), Base64.encodeToString(identityKey.serialize(), Base64.DEFAULT));
|
||||
}
|
||||
|
||||
public void storeOwnIdentityKeyPair(Account account, String name, IdentityKeyPair identityKeyPair) {
|
||||
storeIdentityKey(account, name, true, Base64.encodeToString(identityKeyPair.serialize(),Base64.DEFAULT));
|
||||
storeIdentityKey(account, name, true, identityKeyPair.getPublicKey().getFingerprint().replaceAll("\\s", ""), Base64.encodeToString(identityKeyPair.serialize(), Base64.DEFAULT));
|
||||
}
|
||||
|
||||
public void recreateAxolotlDb() {
|
||||
|
|
|
|||
Loading…
Reference in a new issue