feat(unreal2): Add password rule check (#149)

* feat: add initial password checking

* feat: add password string check and made the field a bool

* chore: fix formatting

* feat: add password to has_password common response

crates/lib/src/protocols/unreal2/protocol.rs

@@ -167,10 +167,17 @@ impl Unreal2Protocol {
     /// Make a full server query.
     pub fn query(&mut self, gather_settings: &GatheringSettings) -> GDResult<Response> {
         // Fetch the server info, this can only handle one response packet
-        let server_info = self.query_server_info()?;
+        let mut server_info = self.query_server_info()?;
 
         let mutators_and_rules = if gather_settings.mutators_and_rules {
-            self.query_mutators_and_rules()?
+            let response = self.query_mutators_and_rules()?;
+
+            if let Some(password) = response.rules.get("GamePassword") {
+                let string = password.concat().to_lowercase();
+                server_info.password = string == "true";
+            }
+
+            response
         } else {
             MutatorsAndRules::default()
         };

crates/lib/src/protocols/unreal2/types.rs

@@ -45,6 +45,7 @@ pub struct ServerInfo {
     pub game_type: String,
     pub num_players: u32,
     pub max_players: u32,
+    pub password: bool,
 }
 
 impl ServerInfo {
@@ -59,6 +60,7 @@ impl ServerInfo {
             game_type: buffer.read_string::<Unreal2StringDecoder>(None)?,
             num_players: buffer.read()?,
             max_players: buffer.read()?,
+            password: false,
         })
     }
 }
@@ -178,16 +180,20 @@ pub struct Response {
 }
 
 impl CommonResponse for Response {
-    fn map(&self) -> Option<&str> { Some(&self.server_info.map) }
+    fn as_original(&self) -> GenericResponse { GenericResponse::Unreal2(self) }
 
     fn name(&self) -> Option<&str> { Some(&self.server_info.name) }
 
     fn game_mode(&self) -> Option<&str> { Some(&self.server_info.game_type) }
 
-    fn players_online(&self) -> u32 { self.server_info.num_players }
+    fn map(&self) -> Option<&str> { Some(&self.server_info.map) }
 
     fn players_maximum(&self) -> u32 { self.server_info.max_players }
 
+    fn players_online(&self) -> u32 { self.server_info.num_players }
+
+    fn has_password(&self) -> Option<bool> { Some(self.server_info.password) }
+
     fn players(&self) -> Option<Vec<&dyn crate::protocols::types::CommonPlayer>> {
         Some(
             self.players
@@ -197,8 +203,6 @@ impl CommonResponse for Response {
                 .collect(),
         )
     }
-
-    fn as_original(&self) -> GenericResponse { GenericResponse::Unreal2(self) }
 }
 
 /// What data to gather, purely used only with the query function.