zdm/envoy
zdm/envoy
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Fix unnecessary authentication token being sent in requests

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This commit is contained in:
Leon Hofmeister 2020-10-23 18:45:40 +02:00
parent fccd7e70b1
commit d4c7813c97
Signed by: delvh
GPG Key ID: 3DECE05F6D9A647C
8 changed files with 64 additions and 79 deletions
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1
client/.classpath
View File

@ -21,7 +21,6 @@
<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11">
<attributes>
<attribute name="maven.pomderived" value="true"/>
<attribute name="module" value="true"/>
</attributes>
</classpathentry>
<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">

9
client/src/main/java/envoy/client/data/LocalDB.java
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@ -44,7 +44,6 @@ public final class LocalDB implements EventListener {
private IDGenerator idGenerator;
private CacheMap cacheMap = new CacheMap();
private String authToken;
private boolean saveToken;
private boolean contactsChanged;
// Auto save timer
@ -261,7 +260,7 @@ public final class LocalDB implements EventListener {
Context.getInstance().getClient().isOnline() ? Instant.now() : lastSync);
// Save last login information
if (saveToken && authToken != null)
if (authToken != null)
SerializationUtils.write(lastLoginFile, user, authToken);
// Save ID generator
@ -489,10 +488,4 @@ public final class LocalDB implements EventListener {
* @since Envoy Client v0.2-beta
*/
public String getAuthToken() { return authToken; }
/**
* @param saveToken whether the token will be persisted or deleted on shutdown
* @since Envoy Client v0.3-beta
*/
public void setSaveToken(boolean saveToken) { this.saveToken = saveToken; }
}

3
client/src/main/java/envoy/client/net/Client.java
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@ -153,8 +153,7 @@ public final class Client implements EventListener, Closeable {
try {
SerializationUtils.writeBytesWithLength(
new AuthenticatedRequest<>(obj,
Context.getInstance().getLocalDB().getUser().getID(),
Context.getInstance().getLocalDB().getAuthToken()),
Context.getInstance().getLocalDB().getUser().getID()),
socket.getOutputStream());
} catch (final IOException e) {
throw new RuntimeException(e);

10
client/src/main/java/envoy/client/ui/controller/LoginScene.java
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@ -16,7 +16,7 @@ import envoy.data.LoginCredentials;
import envoy.event.HandshakeRejection;
import envoy.util.*;
import envoy.client.data.*;
import envoy.client.data.ClientConfig;
import envoy.client.ui.Startup;
import envoy.client.util.IconUtil;
@ -81,9 +81,7 @@ public final class LoginScene implements EventListener {
private void loginButtonPressed() {
final String user = userTextField.getText(), pass = passwordField.getText(),
repeatPass = repeatPasswordField.getText();
// Choose whether to persist the token or not
Context.getInstance().getLocalDB().setSaveToken(cbStaySignedIn.isSelected());
final boolean requestToken = cbStaySignedIn.isSelected();
// Prevent registration with unequal passwords
if (registration && !pass.equals(repeatPass)) {
@ -98,8 +96,8 @@ public final class LoginScene implements EventListener {
} else {
Instant lastSync = Startup.loadLastSync(userTextField.getText());
Startup.performHandshake(registration
? LoginCredentials.registration(user, pass, Startup.VERSION, lastSync)
: LoginCredentials.login(user, pass, Startup.VERSION, lastSync));
? LoginCredentials.registration(user, pass, requestToken, Startup.VERSION, lastSync)
: LoginCredentials.login(user, pass, requestToken, Startup.VERSION, lastSync));
}
}

13
common/src/main/java/envoy/data/AuthenticatedRequest.java
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@ -4,7 +4,7 @@ import java.io.Serializable;
import java.util.Objects;
/**
* Wraps any request sent to the server in the authentication details of a user.
* Enables checking for the server whether the client is really who he is supposed to be.
*
* @author Leon Hofmeister
* @param <T> the type of object to be sent
@ -13,7 +13,6 @@ import java.util.Objects;
public final class AuthenticatedRequest<T extends Serializable> implements Serializable {
private final T request;
private final String authentication;
private final long userID;
private static final long serialVersionUID = 1L;
@ -21,21 +20,13 @@ public final class AuthenticatedRequest<T extends Serializable> implements Seria
/**
* @param request the actual object that should be sent
* @param userID the ID of the currently logged in user
* @param authentication the authentication of the currently logged in user
* @since Envoy Common v0.3-beta
*/
public AuthenticatedRequest(T request, long userID, String authentication) {
public AuthenticatedRequest(T request, long userID) {
this.request = Objects.requireNonNull(request);
this.userID = userID;
this.authentication = authentication == null ? "" : authentication;
}
/**
* @return the authentication token of the currently logged in user
* @since Envoy Common v0.3-beta
*/
public String getAuthentication() { return authentication; }
/**
* @return the request
* @since Envoy Common v0.3-beta

28
common/src/main/java/envoy/data/LoginCredentials.java
View File

@ -15,18 +15,18 @@ import java.util.Objects;
public final class LoginCredentials implements Serializable {
private final String identifier, password, clientVersion;
private final boolean registration, token;
private final boolean registration, token, requestToken;
private final Instant lastSync;
private static final long serialVersionUID = 4;
private LoginCredentials(String identifier, String password, boolean registration,
boolean token, String clientVersion,
Instant lastSync) {
boolean token, boolean requestToken, String clientVersion, Instant lastSync) {
this.identifier = Objects.requireNonNull(identifier);
this.password = Objects.requireNonNull(password);
this.registration = registration;
this.token = token;
this.requestToken = requestToken;
this.clientVersion = Objects.requireNonNull(clientVersion);
this.lastSync = lastSync == null ? Instant.EPOCH : lastSync;
}
@ -36,14 +36,15 @@ public final class LoginCredentials implements Serializable {
*
* @param identifier the identifier of the user
* @param password the password of the user
* @param requestToken requests the server to generate an authentication token
* @param clientVersion the version of the client sending these credentials
* @param lastSync the timestamp of the last synchronization
* @return the created login credentials
* @since Envoy Common v0.2-beta
*/
public static LoginCredentials login(String identifier, String password,
public static LoginCredentials login(String identifier, String password, boolean requestToken,
String clientVersion, Instant lastSync) {
return new LoginCredentials(identifier, password, false, false, clientVersion,
return new LoginCredentials(identifier, password, false, false, requestToken, clientVersion,
lastSync);
}
@ -59,7 +60,7 @@ public final class LoginCredentials implements Serializable {
*/
public static LoginCredentials loginWithToken(String identifier, String token,
String clientVersion, Instant lastSync) {
return new LoginCredentials(identifier, token, false, true, clientVersion, lastSync);
return new LoginCredentials(identifier, token, false, true, false, clientVersion, lastSync);
}
/**
@ -67,24 +68,27 @@ public final class LoginCredentials implements Serializable {
*
* @param identifier the identifier of the user
* @param password the password of the user
* @param requestToken requests the server to generate an authentication token
* @param clientVersion the version of the client sending these credentials
* @param lastSync the timestamp of the last synchronization
* @return the created login credentials
* @since Envoy Common v0.2-beta
*/
public static LoginCredentials registration(String identifier, String password,
boolean requestToken,
String clientVersion, Instant lastSync) {
return new LoginCredentials(identifier, password, true, false, clientVersion,
return new LoginCredentials(identifier, password, true, false, requestToken, clientVersion,
lastSync);
}
@Override
public String toString() {
return String.format(
"LoginCredentials[identifier=%s,registration=%b,token=%b,clientVersion=%s,lastSync=%s]",
"LoginCredentials[identifier=%s,registration=%b,token=%b,requestToken=%b,clientVersion=%s,lastSync=%s]",
identifier,
registration,
token,
requestToken,
clientVersion,
lastSync);
}
@ -116,6 +120,14 @@ public final class LoginCredentials implements Serializable {
return token;
}
/**
* @return {@code true} if the server should generate a new authentication token
* @since Envoy Common v0.2-beta
*/
public boolean requestToken() {
return requestToken;
}
/**
* @return the version of the client sending these credentials
* @since Envoy Common v0.1-beta

38
server/src/main/java/envoy/server/net/ObjectMessageProcessor.java
View File

@ -6,12 +6,11 @@ import java.util.Set;
import java.util.logging.*;
import com.jenkov.nioserver.*;
import com.jenkov.nioserver.Message;
import envoy.data.AuthenticatedRequest;
import envoy.util.EnvoyLog;
import envoy.server.data.*;
import envoy.server.data.PersistenceManager;
import envoy.server.processors.ObjectProcessor;
/**
@ -49,32 +48,25 @@ public final class ObjectMessageProcessor implements IMessageProcessor {
// authenticate requests if necessary
boolean authenticated = false;
if (obj instanceof AuthenticatedRequest)
try {
authenticated = PersistenceManager
.getInstance().getUserByID(((AuthenticatedRequest<?>) obj).getUserID())
.getID() == ConnectionManager.getInstance()
.getUserIDBySocketID(message.socketId);
if (obj instanceof AuthenticatedRequest) {
Contact contact = PersistenceManager.getInstance()
.getContactByID(((AuthenticatedRequest<?>) obj).getUserID());
// Validating the authenticity of the request
if (contact == null || contact instanceof Group
|| !((AuthenticatedRequest<?>) obj).getAuthentication()
.equals(((User) contact).getAuthToken())) {
// Invalid request
logger.log(Level.INFO,
"A user tried to perform an authenticated request but could not identify himself. Discarding request.");
return;
}
// Valid request
logger.log(Level.INFO, "A user successfully authenticated a request for " + obj);
authenticated = true;
// Class cast exception and NullPointerException are valid here and signify a
// failed authentication
} catch (ClassCastException | NullPointerException e) {} finally {
obj = ((AuthenticatedRequest<?>) obj).getRequest();
} else
logger.log(Level.FINE, "Received unauthenticated " + obj);
}
logger.log(Level.INFO,
"Received " + (authenticated ? "" : "un") + "authenticated " + obj);
refer(message.socketId, writeProxy, obj, authenticated);
} catch (IOException | ClassNotFoundException e) {
e.printStackTrace();
logger.log(Level.WARNING,
"An exception occurred when reading in an object: " + e);
}
}

3
server/src/main/java/envoy/server/processors/LoginCredentialProcessor.java
View File

@ -124,6 +124,7 @@ public final class LoginCredentialProcessor implements ObjectProcessor<LoginCred
UserStatusChangeProcessor.updateUserStatus(user, ONLINE);
// Process token request
if (credentials.requestToken()) {
String token;
if (user.getAuthToken() != null && user.getAuthTokenExpiration().isAfter(Instant.now()))
@ -139,7 +140,7 @@ public final class LoginCredentialProcessor implements ObjectProcessor<LoginCred
ServerConfig.getInstance().getAuthTokenExpiration().longValue(), ChronoUnit.DAYS));
persistenceManager.updateContact(user);
writeProxy.write(socketID, new NewAuthToken(token));
}
final var pendingMessages =
PersistenceManager.getInstance().getPendingMessages(user, credentials.getLastSync());
pendingMessages.removeIf(GroupMessage.class::isInstance);