package com.github.steveice10.mc.auth.service;
import com.github.steveice10.mc.auth.data.GameProfile;
import com.github.steveice10.mc.auth.exception.request.InvalidCredentialsException;
import com.github.steveice10.mc.auth.exception.request.RequestException;
import com.github.steveice10.mc.auth.util.HTTP;
import java.net.URI;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.UUID;
/**
* Service used for authenticating users.
*/
public class AuthenticationService extends Service {
private static final URI DEFAULT_BASE_URI = URI.create("https://authserver.mojang.com/");
private static final String AUTHENTICATE_ENDPOINT = "authenticate";
private static final String REFRESH_ENDPOINT = "refresh";
private static final String INVALIDATE_ENDPOINT = "invalidate";
private String clientToken;
private String username;
private String password;
private String accessToken;
private boolean loggedIn;
private String id;
private List<GameProfile.Property> properties = new ArrayList<>();
private List<GameProfile> profiles = new ArrayList<>();
private GameProfile selectedProfile;
/**
* Creates a new AuthenticationService instance.
*/
public AuthenticationService() {
this(UUID.randomUUID().toString());
}
/**
* Creates a new AuthenticationService instance.
*
* @param clientToken Client token to use when making authentication requests.
*/
public AuthenticationService(String clientToken) {
super(DEFAULT_BASE_URI);
if(clientToken == null) {
throw new IllegalArgumentException("ClientToken cannot be null.");
}
this.clientToken = clientToken;
}
/**
* Gets the client token of the service.
*
* @return The service's client token.
*/
public String getClientToken() {
return this.clientToken;
}
/**
* Gets the username of the service.
*
* @return The service's username.
*/
public String getUsername() {
return this.id;
}
/**
* Gets the password of the service.
*
* @return The user's ID.
*/
public String getPassword() {
return this.password;
}
/**
* Gets the access token of the service.
*
* @return The user's access token.
*/
public String getAccessToken() {
return this.accessToken;
}
/**
* Gets whether the service has been used to log in.
*
* @return Whether the service is logged in.
*/
public boolean isLoggedIn() {
return this.loggedIn;
}
/**
* Gets the ID of the user logged in with the service.
*
* @return The user's ID.
*/
public String getId() {
return this.id;
}
/**
* Gets the properties of the user logged in with the service.
*
* @return The user's properties.
*/
public List<GameProfile.Property> getProperties() {
return Collections.unmodifiableList(this.properties);
}
/**
* Gets the available profiles of the user logged in with the service.
*
* @return The user's available profiles.
*/
public List<GameProfile> getAvailableProfiles() {
return Collections.unmodifiableList(this.profiles);
}
/**
* Gets the selected profile of the user logged in with the service.
*
* @return The user's selected profile.
*/
public GameProfile getSelectedProfile() {
return this.selectedProfile;
}
/**
* Sets the username of the service.
*
* @param username Username to set.
*/
public void setUsername(String username) {
if(this.loggedIn && this.selectedProfile != null) {
throw new IllegalStateException("Cannot change username while user is logged in and profile is selected.");
} else {
this.username = username;
}
}
/**
* Sets the password of the service.
*
* @param password Password to set.
*/
public void setPassword(String password) {
if(this.loggedIn && this.selectedProfile != null) {
throw new IllegalStateException("Cannot change password while user is logged in and profile is selected.");
} else {
this.password = password;
}
}
/**
* Sets the access token of the service.
*
* @param accessToken Access token to set.
*/
public void setAccessToken(String accessToken) {
if(this.loggedIn && this.selectedProfile != null) {
throw new IllegalStateException("Cannot change access token while user is logged in and profile is selected.");
} else {
this.accessToken = accessToken;
}
}
/**
* Logs the service in.
* The current access token will be used if set. Otherwise, password-based authentication will be used.
*
* @throws RequestException If an error occurs while making the request.
*/
public void login() throws RequestException {
if(this.username == null || this.username.equals("")) {
throw new InvalidCredentialsException("Invalid username.");
}
boolean token = this.accessToken != null && !this.accessToken.equals("");
boolean password = this.password != null && !this.password.equals("");
if(!token && !password) {
throw new InvalidCredentialsException("Invalid password or access token.");
}
AuthenticateRefreshResponse response;
if(token) {
RefreshRequest request = new RefreshRequest(this.clientToken, this.accessToken, null);
response = HTTP.makeRequest(this.getProxy(), this.getEndpointUri(REFRESH_ENDPOINT), request, AuthenticateRefreshResponse.class);
} else {
AuthenticationRequest request = new AuthenticationRequest(this.username, this.password, this.clientToken);
response = HTTP.makeRequest(this.getProxy(), this.getEndpointUri(AUTHENTICATE_ENDPOINT), request, AuthenticateRefreshResponse.class);
}
if(response == null) {
throw new RequestException("Server returned invalid response.");
} else if(!response.clientToken.equals(this.clientToken)) {
throw new RequestException("Server responded with incorrect client token.");
}
if(response.user != null && response.user.id != null) {
this.id = response.user.id;
} else {
this.id = this.username;
}
this.accessToken = response.accessToken;
this.profiles = response.availableProfiles != null ? Arrays.asList(response.availableProfiles) : Collections.<GameProfile>emptyList();
this.selectedProfile = response.selectedProfile;
this.properties.clear();
if(response.user != null && response.user.properties != null) {
this.properties.addAll(response.user.properties);
}
this.loggedIn = true;
}
/**
* Logs the service out.
*
* @throws RequestException If an error occurs while making the request.
*/
public void logout() throws RequestException {
if(!this.loggedIn) {
throw new IllegalStateException("Cannot log out while not logged in.");
}
InvalidateRequest request = new InvalidateRequest(this.clientToken, this.accessToken);
HTTP.makeRequest(this.getProxy(), this.getEndpointUri(INVALIDATE_ENDPOINT), request);
this.accessToken = null;
this.loggedIn = false;
this.id = null;
this.properties.clear();
this.profiles.clear();
this.selectedProfile = null;
}
/**
* Selects a game profile.
*
* @param profile Profile to select.
* @throws RequestException If an error occurs while making the request.
*/
public void selectGameProfile(GameProfile profile) throws RequestException {
if(!this.loggedIn) {
throw new RequestException("Cannot change game profile while not logged in.");
} else if(this.selectedProfile != null) {
throw new RequestException("Cannot change game profile when it is already selected.");
} else if(profile == null || !this.profiles.contains(profile)) {
throw new IllegalArgumentException("Invalid profile '" + profile + "'.");
}
RefreshRequest request = new RefreshRequest(this.clientToken, this.accessToken, profile);
AuthenticateRefreshResponse response = HTTP.makeRequest(this.getProxy(), this.getEndpointUri(REFRESH_ENDPOINT), request, AuthenticateRefreshResponse.class);
if(response == null) {
throw new RequestException("Server returned invalid response.");
} else if(!response.clientToken.equals(this.clientToken)) {
throw new RequestException("Server responded with incorrect client token.");
}
this.accessToken = response.accessToken;
this.selectedProfile = response.selectedProfile;
}
@Override
public String toString() {
return "UserAuthentication{clientToken=" + this.clientToken + ", username=" + this.username + ", accessToken=" + this.accessToken + ", loggedIn=" + this.loggedIn + ", profiles=" + this.profiles + ", selectedProfile=" + this.selectedProfile + "}";
}
private static class Agent {
private String name;
private int version;
protected Agent(String name, int version) {
this.name = name;
this.version = version;
}
}
private static class User {
public String id;
public List<GameProfile.Property> properties;
}
private static class AuthenticationRequest {
private Agent agent;
private String username;
private String password;
private String clientToken;
private boolean requestUser;
protected AuthenticationRequest(String username, String password, String clientToken) {
this.agent = new Agent("Minecraft", 1);
this.username = username;
this.password = password;
this.clientToken = clientToken;
this.requestUser = true;
}
}
private static class RefreshRequest {
private String clientToken;
private String accessToken;
private GameProfile selectedProfile;
private boolean requestUser;
protected RefreshRequest(String clientToken, String accessToken, GameProfile selectedProfile) {
this.clientToken = clientToken;
this.accessToken = accessToken;
this.selectedProfile = selectedProfile;
this.requestUser = true;
}
}
private static class InvalidateRequest {
private String clientToken;
private String accessToken;
protected InvalidateRequest(String clientToken, String accessToken) {
this.clientToken = clientToken;
this.accessToken = accessToken;
}
}
private static class AuthenticateRefreshResponse {
public String accessToken;
public String clientToken;
public GameProfile selectedProfile;
public GameProfile[] availableProfiles;
public User user;
}
}
