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Merge pull request #14 from informatik-ag-ngl/f/advanced_login

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Support classes for handshake rejection
This commit is contained in:
Kai S. K. Engelbart 2020-02-13 09:13:09 +01:00 committed by GitHub
commit 2cc2af68e5
4 changed files with 142 additions and 8 deletions
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100
.settings/org.eclipse.jdt.core.prefs
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@ -1,11 +1,111 @@
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16
src/main/java/envoy/data/LoginCredentials.java
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@ -17,24 +17,24 @@ import java.util.Formatter;
*/
public class LoginCredentials implements Serializable {
private final String name;
private final String identifier;
private final byte[] passwordHash;
private final boolean registration;
private static final long serialVersionUID = -7395245059059523314L;
/**
* Creates an in stance of {@link LoginCredentials}.
* Creates an instance of {@link LoginCredentials} for a new {@link User}.
*
* @param name the name of the user
* @param identifier the identifier of the user
* @param password the password of the user (will be converted to a hash)
* @param registration signifies that these credentials are used for user
* registration instead of user login
* @throws NoSuchAlgorithmException if the algorithm used is unknown
* @since Envoy Common v0.2-alpha
*/
public LoginCredentials(String name, char[] password, boolean registration) throws NoSuchAlgorithmException {
this.name = name;
public LoginCredentials(String identifier, char[] password, boolean registration) throws NoSuchAlgorithmException {
this.identifier = identifier;
passwordHash = getSha256(toByteArray(password));
this.registration = registration;
}
@ -53,7 +53,7 @@ public class LoginCredentials implements Serializable {
@Override
public String toString() {
try (Formatter form = new Formatter()) {
form.format("LoginCredentials[name=%s,passwordHash=", name);
form.format("LoginCredentials[identifier=%s,passwordHash=", identifier);
for (byte element : passwordHash)
form.format("%02x", element);
return form.format(",registration=%b]", registration).toString();
@ -61,10 +61,10 @@ public class LoginCredentials implements Serializable {
}
/**
* @return the name of the user performing the login
* @return the identifier of the user performing the login
* @since Envoy Common v0.2-alpha
*/
public String getName() { return name; }
public String getIdentifier() { return identifier; }
/**
* @return the password hash of the user performing the login

3
src/main/java/envoy/event/Event.java
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@ -42,5 +42,8 @@ public abstract class Event<T> implements Serializable {
private static final long serialVersionUID = -9019362144094097997L;
protected Valueless() { super(null); }
@Override
public String toString() { return this.getClass().getSimpleName(); }
}
}

31
src/main/java/envoy/event/HandshakeRejectionEvent.java
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@ -1,5 +1,7 @@
package envoy.event;
import envoy.data.LoginCredentials;
/**
* Signifies to the client that the handshake failed for the attached
* reason.<br>
@ -13,6 +15,35 @@ package envoy.event;
*/
public class HandshakeRejectionEvent extends Event<String> {
/**
* Select this value if a given password hash was incorrect
*/
public static final String WRONG_PASSWORD = "an incorrect password was entered";
/**
* Select this value if a given {@link LoginCredentials} pointed at a client who
* is already online
*/
public static final String ALREADY_ONLINE = "user is already online";
/**
* Select this value if a given {@link LoginCredentials} pointed at a client who
* does not exist
*/
public static final String USER_DOES_NOT_EXIST = "user does not exist";
/**
* Select this value if a given {@link LoginCredentials} with
* {@link LoginCredentials#isRegistration()}==true points at an already existing
* user
*/
public static final String USER_EXISTS_ALREADY = "user can not be created as he already exists";
/**
* Select this value if an unknown error occurred
*/
public static final String UNKNOWN_REASON = "cause of failure is unknown";
private static final long serialVersionUID = -8723270093452609197L;
/**