Handle chat messages

This makes the server not panic and exit when recieving chat messages from the
client, but we only extract the message for now.

src/bin/kawari-world.rs

@@ -362,10 +362,18 @@ async fn main() {
                                                 server_id: 0,
                                                 timestamp: timestamp_secs(),
                                                 data: IPCStructData::PlayerSpawn(PlayerSpawn {
+                                                    current_world_id: WORLD_ID,
+                                                    home_world_id: WORLD_ID,
+                                                    title: 1,
+                                                    class_job: 35,
+                                                    name: "Test".to_string(),
                                                     hp_curr: 100,
                                                     hp_max: 100,
                                                     mp_curr: 100,
                                                     mp_max: 100,
+                                                    model_type: 1,
+                                                    spawn_index: 1,
+                                                    state: 1,
                                                     ..Default::default()
                                                 }),
                                             };
@@ -442,6 +450,9 @@ async fn main() {
                                     IPCStructData::Disconnected { .. } => {
                                         tracing::info!("Client disconnected!");
                                     }
+                                    IPCStructData::ChatMessage { message } => {
+                                        tracing::info!("Client sent chat message: {message}!");
+                                    }
                                     _ => panic!(
                                         "The server is recieving a IPC response or unknown packet!"
                                     ),

src/ipc.rs

@@ -76,6 +76,8 @@ pub enum IPCOpCode {
     LogOutComplete = 0x369,
     // Sent by the client when it's actually disconnecting
     Disconnected = 0x360,
+    // Sent by the client when they send a chat message
+    ChatMessage = 0xCA,
 }
 
 #[binrw]
@@ -275,6 +277,18 @@ pub enum IPCStructData {
         // TODO: full of possibly interesting information
         unk: [u8; 8],
     },
+    #[br(pre_assert(*magic == IPCOpCode::ChatMessage))]
+    ChatMessage {
+        // TODO: incomplete
+        #[br(dbg)]
+        #[brw(pad_before = 26)]
+        #[brw(pad_after = 998)]
+        #[br(count = 32)]
+        #[bw(pad_size_to = 32)]
+        #[br(map = read_string)]
+        #[bw(map = write_string)]
+        message: String,
+    },
 
     // Server->Client IPC
     #[br(pre_assert(false))]
@@ -433,6 +447,7 @@ impl IPCSegment {
                 IPCStructData::LogOut { .. } => todo!(),
                 IPCStructData::LogOutComplete { .. } => 8,
                 IPCStructData::Disconnected { .. } => todo!(),
+                IPCStructData::ChatMessage { .. } => todo!(),
             }
     }
 }

src/world/player_spawn.rs

@@ -1,10 +1,12 @@
 use binrw::binrw;
 
+use crate::common::{read_string, write_string};
+
 use super::position::Position;
 use super::status_effect::StatusEffect;
 
 #[binrw]
-#[derive(Debug, Clone, Copy, Default)]
+#[derive(Debug, Clone, Default)]
 pub struct PlayerSpawn {
     pub title: u16,
     pub u1b: u16,
@@ -78,7 +80,11 @@ pub struct PlayerSpawn {
     pub models: [u32; 10],
     pub unknown6_58: [u8; 10],
     pub padding3: [u8; 7],
-    pub name: [u8; 32],
+    #[br(count = 32)]
+    #[bw(pad_size_to = 32)]
+    #[br(map = read_string)]
+    #[bw(map = write_string)]
+    pub name: String,
     pub look: [u8; 26],
     pub fc_tag: [u8; 6],
     pub padding: [u8; 26],