Account linking part 1

bukkit/src/main/resources/plugin.yml

@@ -3,4 +3,22 @@ description: ${project.description}
 version: ${project.version}
 author: ${project.organization.name}
 website: ${project.url}
-main: org.geysermc.floodgate.BukkitPlugin
+main: org.geysermc.floodgate.BukkitPlugin
+commands:
+  linkaccount:
+    description: Link your Java and Bedrock accounts
+    usage: /linkaccount [code]
+    permission: floodgate.linkaccount
+    permission-message: You don't have the floodgate.linkaccount permission.
+  unlinkaccount:
+    description: Unlink your Java account from your Bedrock account
+    usage: /unlinkaccount
+    permission: floodgate.unlinkaccount
+    permission-message: You don't have the floodgate.unlinkaccount permission.
+permissions:
+  floodgate.linkaccount:
+    description: Allows players to link their Bedrock and Java accounts
+    default: true
+  floodgate.unlinkaccount:
+    description: Allows players to unlink their Bedrock and Java accounts
+    default: true

common/pom.xml

@@ -30,6 +30,12 @@
             <version>2.9.9</version>
             <scope>compile</scope>
         </dependency>
+        <dependency>
+            <groupId>org.xerial</groupId>
+            <artifactId>sqlite-jdbc</artifactId>
+            <version>3.30.1</version>
+            <scope>compile</scope>
+        </dependency>
     </dependencies>
 
     <build>

common/src/main/java/org/geysermc/floodgate/FloodgateConfig.java

@@ -26,6 +26,9 @@ public class FloodgateConfig {
     @JsonProperty(value = "disconnect")
     private DisconnectMessages messages;
 
+    @JsonProperty(value = "player-link")
+    private PlayerLinkConfig playerLink;
+
     @JsonProperty
     private boolean debug;
 
@@ -40,6 +43,16 @@ public static class DisconnectMessages {
         private String invalidArgumentsLength;
     }
 
+    @Getter
+    public static class PlayerLinkConfig {
+        @JsonProperty("enable")
+        private boolean enabled;
+        @JsonProperty("allow-linking")
+        private boolean allowLinking;
+        @JsonProperty("link-code-timeout")
+        private long linkCodeTimeout;
+    }
+
     public static FloodgateConfig load(Logger logger, Path configPath) {
         return load(logger, configPath, FloodgateConfig.class);
     }

common/src/main/java/org/geysermc/floodgate/LinkRequest.java

@@ -0,0 +1,48 @@
+package org.geysermc.floodgate;
+
+import lombok.Getter;
+
+import java.time.Instant;
+import java.util.UUID;
+
+@Getter
+public class LinkRequest {
+    /**
+     * The Java username of the linked player
+     */
+    private String javaUsername;
+    /**
+     * The Java UUID of the linked player
+     */
+    private UUID javaUniqueId;
+    /**
+     * The link code
+     */
+    private String linkCode;
+    /**
+     * The username of player being linked
+     */
+    private String bedrockUsername;
+    /**
+     * The time when the link was requested
+     */
+    private long unixTime;
+
+    LinkRequest(String username, UUID uuid, String code, String beUsername) {
+        javaUniqueId = uuid;
+        javaUsername = username;
+        linkCode = code;
+        bedrockUsername = beUsername;
+        unixTime = Instant.now().getEpochSecond();
+    }
+
+    public boolean isExpired() {
+        long timePassed = Instant.now().getEpochSecond() - unixTime;
+        return timePassed > PlayerLink.getVerifyLinkTimeout();
+    }
+
+    public boolean checkGamerTag(FloodgatePlayer player) {
+        // Accept the request whether the prefix was used or not
+        return bedrockUsername.equals(player.getUsername()) || bedrockUsername.equals(player.getJavaUsername());
+    }
+}

common/src/main/java/org/geysermc/floodgate/LinkedPlayer.java

@@ -0,0 +1,25 @@
+package org.geysermc.floodgate;
+
+import lombok.AccessLevel;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.Setter;
+
+import java.util.UUID;
+
+@AllArgsConstructor(access = AccessLevel.PACKAGE)
+@Getter @Setter
+public class LinkedPlayer {
+    /**
+     * The Java username of the linked player
+     */
+    public String javaUsername;
+    /**
+     * The Java UUID of the linked player
+     */
+    public UUID javaUniqueId;
+    /**
+     * The UUID of the Bedrock player
+     */
+    public UUID bedrockId;
+}

common/src/main/resources/config.yml

@@ -10,3 +10,19 @@ disconnect:
   # The disconnect message Geyser users should get when connecting
   # to the server with the correct key but not with the correct data format
   invalid-arguments-length: Expected {0} arguments, got {1}. Is Geyser up-to-date?
+
+# Configuration for player linking
+player-link:
+  # Whether to enable the linking system. Turning this off will prevent
+  # players from using the linking feature even if they are already linked.
+  enable: false
+  # The type of storage system you want to use
+  # Currently implemented: SQLite
+  type: sqlite
+  # Whether to allow the use of /linkaccount and /unlinkaccount
+  # You can also use allow specific people to use the commands using the
+  # permissions floodgate.linkaccount and floodgate.unlinkaccount.
+  # This is only for linking, already connected people will stay connected
+  allow-linking: true
+  # The amount of time until a link code expires in seconds
+  link-code-timeout: 300