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treat carbons as enabled when requested through bind 2

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Daniel Gultsch 2023-11-21 16:50:46 +01:00
parent 3dac9ef3f4
commit 59ff27062b
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1 changed files with 62 additions and 23 deletions
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85
src/main/java/eu/siacs/conversations/xmpp/XmppConnection.java
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@ -17,7 +17,9 @@ import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import com.google.common.base.Optional;
import com.google.common.base.Preconditions;
import com.google.common.base.Strings;
import com.google.common.collect.ImmutableList;
import org.xmlpull.v1.XmlPullParserException;
@ -186,7 +188,7 @@ public class XmppConnection implements Runnable {
private OnStatusChanged statusListener = null;
private OnBindListener bindListener = null;
private OnMessageAcknowledged acknowledgedListener = null;
private SaslMechanism saslMechanism;
private LoginInfo loginInfo;
private HashedToken.Mechanism hashTokenRequest;
private HttpUrl redirectionUrl = null;
private String verifiedHostname = null;
@ -581,7 +583,6 @@ public class XmppConnection implements Runnable {
if (processSuccess(success)) {
break;
}
} else if (nextTag.isStart("failure", Namespace.TLS)) {
throw new StateChangingException(Account.State.TLS_ERROR);
} else if (nextTag.isStart("failure")) {
@ -591,7 +592,7 @@ public class XmppConnection implements Runnable {
// two step sasl2 - we don’t support this yet
throw new StateChangingException(Account.State.INCOMPATIBLE_CLIENT);
} else if (nextTag.isStart("challenge")) {
if (isSecure() && this.saslMechanism != null) {
if (isSecure() && this.loginInfo != null) {
final Element challenge = tagReader.readElement(nextTag);
processChallenge(challenge);
} else {
@ -701,7 +702,7 @@ public class XmppConnection implements Runnable {
throw new AssertionError("Missing implementation for " + version);
}
try {
response.setContent(saslMechanism.getResponse(challenge.getContent(), sslSocketOrNull(socket)));
response.setContent(this.loginInfo.saslMechanism.getResponse(challenge.getContent(), sslSocketOrNull(socket)));
} catch (final SaslMechanism.AuthenticationException e) {
// TODO: Send auth abort tag.
Log.e(Config.LOGTAG, e.toString());
@ -718,8 +719,9 @@ public class XmppConnection implements Runnable {
} catch (final IllegalArgumentException e) {
throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
}
final SaslMechanism currentSaslMechanism = this.saslMechanism;
if (currentSaslMechanism == null) {
final LoginInfo currentLoginInfo = this.loginInfo;
final SaslMechanism currentSaslMechanism = LoginInfo.mechanism(currentLoginInfo);
if (currentLoginInfo == null || currentSaslMechanism == null) {
throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
}
final String challenge;
@ -818,13 +820,25 @@ public class XmppConnection implements Runnable {
//if we did not enable stream management in bind do it now
waitForDisco = enableStreamManagement();
}
final boolean negotiatedCarbons;
if (carbonsEnabled != null) {
negotiatedCarbons = true;
Log.d(
Config.LOGTAG,
account.getJid().asBareJid() + ": successfully enabled carbons");
account.getJid().asBareJid()
+ ": successfully enabled carbons (via Bind 2.0)");
features.carbonsEnabled = true;
} else if (loginInfo.inlineBindFeatures.contains(Namespace.CARBONS)) {
negotiatedCarbons = true;
Log.d(
Config.LOGTAG,
account.getJid().asBareJid()
+ ": successfully enabled carbons (via Bind 2.0/implicit)");
features.carbonsEnabled = true;
} else {
negotiatedCarbons = false;
}
sendPostBindInitialization(waitForDisco, carbonsEnabled != null);
sendPostBindInitialization(waitForDisco, negotiatedCarbons);
}
final HashedToken.Mechanism tokenMechanism;
if (SaslMechanism.hashedToken(currentSaslMechanism)) {
@ -928,7 +942,7 @@ public class XmppConnection implements Runnable {
}
Log.d(Config.LOGTAG, failure.toString());
Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": login failure " + version);
if (SaslMechanism.hashedToken(this.saslMechanism)) {
if (SaslMechanism.hashedToken(LoginInfo.mechanism(this.loginInfo))) {
Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": resetting token");
account.resetFastToken();
mXmppConnectionService.databaseBackend.updateAccount(account);
@ -954,7 +968,7 @@ public class XmppConnection implements Runnable {
}
}
}
if (SaslMechanism.hashedToken(this.saslMechanism)) {
if (SaslMechanism.hashedToken(LoginInfo.mechanism(this.loginInfo))) {
Log.d(
Config.LOGTAG,
account.getJid().asBareJid()
@ -1336,7 +1350,7 @@ public class XmppConnection implements Runnable {
account.getJid().asBareJid()
+ ": quick start in progress. ignoring features: "
+ XmlHelper.printElementNames(this.streamFeatures));
if (SaslMechanism.hashedToken(this.saslMechanism)) {
if (SaslMechanism.hashedToken(LoginInfo.mechanism(this.loginInfo))) {
return;
}
if (isFastTokenAvailable(
@ -1447,10 +1461,10 @@ public class XmppConnection implements Runnable {
final Collection<ChannelBinding> channelBindings = ChannelBinding.of(cbElement);
final SaslMechanism.Factory factory = new SaslMechanism.Factory(account);
final SaslMechanism saslMechanism = factory.of(mechanisms, channelBindings, version, SSLSockets.version(this.socket));
this.saslMechanism = validate(saslMechanism, mechanisms);
this.validate(saslMechanism, mechanisms);
final boolean quickStartAvailable;
final String firstMessage = this.saslMechanism.getClientFirstMessage(sslSocketOrNull(this.socket));
final boolean usingFast = SaslMechanism.hashedToken(this.saslMechanism);
final String firstMessage = saslMechanism.getClientFirstMessage(sslSocketOrNull(this.socket));
final boolean usingFast = SaslMechanism.hashedToken(LoginInfo.mechanism(this.loginInfo));
final Element authenticate;
if (version == SaslMechanism.Version.SASL) {
authenticate = new Element("auth", Namespace.SASL);
@ -1458,6 +1472,7 @@ public class XmppConnection implements Runnable {
authenticate.setContent(firstMessage);
}
quickStartAvailable = false;
this.loginInfo = new LoginInfo(saslMechanism,version,Collections.emptyList());
} else if (version == SaslMechanism.Version.SASL_2) {
final Element inline = authElement.findChild("inline", Namespace.SASL_2);
final boolean sm = inline != null && inline.hasChild("sm", Namespace.STREAM_MANAGEMENT);
@ -1486,6 +1501,7 @@ public class XmppConnection implements Runnable {
return;
}
}
this.loginInfo = new LoginInfo(saslMechanism,version,bindFeatures);
this.hashTokenRequest = hashTokenRequest;
authenticate = generateAuthenticationRequest(firstMessage, usingFast, hashTokenRequest, bindFeatures, sm);
} else {
@ -1502,8 +1518,8 @@ public class XmppConnection implements Runnable {
+ ": Authenticating with "
+ version
+ "/"
+ this.saslMechanism.getMechanism());
authenticate.setAttribute("mechanism", this.saslMechanism.getMechanism());
+ LoginInfo.mechanism(this.loginInfo).getMechanism());
authenticate.setAttribute("mechanism", LoginInfo.mechanism(this.loginInfo).getMechanism());
synchronized (this.mStanzaQueue) {
this.stanzasSentBeforeAuthentication = this.stanzasSent;
tagWriter.writeElement(authenticate);
@ -1515,8 +1531,7 @@ public class XmppConnection implements Runnable {
return inline != null && inline.hasChild("fast", Namespace.FAST);
}
@NonNull
private SaslMechanism validate(final @Nullable SaslMechanism saslMechanism, Collection<String> mechanisms) throws StateChangingException {
private void validate(final @Nullable SaslMechanism saslMechanism, Collection<String> mechanisms) throws StateChangingException {
if (saslMechanism == null) {
Log.d(
Config.LOGTAG,
@ -1526,7 +1541,7 @@ public class XmppConnection implements Runnable {
throw new StateChangingException(Account.State.INCOMPATIBLE_SERVER);
}
if (SaslMechanism.hashedToken(saslMechanism)) {
return saslMechanism;
return;
}
final int pinnedMechanism = account.getPinnedMechanismPriority();
if (pinnedMechanism > saslMechanism.getPriority()) {
@ -1541,7 +1556,6 @@ public class XmppConnection implements Runnable {
+ "). Possible downgrade attack?");
throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
}
return saslMechanism;
}
private Element generateAuthenticationRequest(final String firstMessage, final boolean usingFast) {
@ -1568,7 +1582,8 @@ public class XmppConnection implements Runnable {
.addChild("device")
.setContent(String.format("%s %s", Build.MANUFACTURER, Build.MODEL));
}
// do not include bind if 'inlinestreamManagment' is missing and we have a streamId
// do not include bind if 'inlineStreamManagement' is missing and we have a streamId
// (because we would rather just do a normal SM/resume)
final boolean mayAttemptBind = streamId == null || inlineStreamManagement;
if (bind != null && mayAttemptBind) {
authenticate.addChild(generateBindRequest(bind));
@ -1746,7 +1761,7 @@ public class XmppConnection implements Runnable {
synchronized (this.commands) {
this.commands.clear();
}
this.saslMechanism = null;
this.loginInfo = null;
}
private void sendBindRequest() {
@ -2240,7 +2255,7 @@ public class XmppConnection implements Runnable {
&& quickStartMechanism != null
&& account.isOptionSet(Account.OPTION_QUICKSTART_AVAILABLE)) {
mXmppConnectionService.restoredFromDatabaseLatch.await();
this.saslMechanism = quickStartMechanism;
this.loginInfo = new LoginInfo(quickStartMechanism, SaslMechanism.Version.SASL_2, Bind2.QUICKSTART_FEATURES);
final boolean usingFast = quickStartMechanism instanceof HashedToken;
final Element authenticate =
generateAuthenticationRequest(quickStartMechanism.getClientFirstMessage(sslSocketOrNull(this.socket)), usingFast);
@ -2635,6 +2650,30 @@ public class XmppConnection implements Runnable {
}
}
private static class LoginInfo {
public final SaslMechanism saslMechanism;
public final SaslMechanism.Version saslVersion;
public final List<String> inlineBindFeatures;
private LoginInfo(
final SaslMechanism saslMechanism,
final SaslMechanism.Version saslVersion,
final Collection<String> inlineBindFeatures) {
Preconditions.checkNotNull(saslMechanism, "SASL Mechanism must not be null");
Preconditions.checkNotNull(saslVersion, "SASL version must not be null");
this.saslMechanism = saslMechanism;
this.saslVersion = saslVersion;
this.inlineBindFeatures =
inlineBindFeatures == null
? Collections.emptyList()
: ImmutableList.copyOf(inlineBindFeatures);
}
public static SaslMechanism mechanism(final LoginInfo loginInfo) {
return loginInfo == null ? null : loginInfo.saslMechanism;
}
}
private static class StateChangingError extends Error {
private final Account.State state;