feat(auth): finish protocol 10 method 2 and 3

Cargo.lock

@@ -549,6 +549,12 @@ version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
 
+[[package]]
+name = "hex"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
+
 [[package]]
 name = "hmac"
 version = "0.12.1"
@@ -1304,6 +1310,7 @@ dependencies = [
  "bytemuck",
  "chrono",
  "dotenv",
+ "hex",
  "hmac",
  "log",
  "md-5",

Cargo.toml

@@ -22,6 +22,7 @@ tokio = { version = "1.43.0", features = ["macros", "rt-multi-thread", "net", "s
 tokio-stream = { version =  "0.1.17", features = ["io-util"] }
 tonic = "0.12.3"
 prost = "0.13.4"
+hex = "0.4.3"
 
 [build-dependencies]
 tonic-build = "0.12.3"

src/grpc/account.rs

@@ -1,14 +1,13 @@
 use std::{env, result};
-use std::net::{Ipv4Addr, SocketAddrV4};
+use std::array::TryFromSliceError;
+use std::net::{Ipv4Addr};
 use once_cell::sync::Lazy;
 use thiserror::Error;
-use tonic::codegen::http::uri::InvalidUri;
 use tonic::metadata::{Ascii, MetadataValue};
-use tonic::{Request, Status, transport};
+use tonic::{Request, transport};
 use tonic::codegen::InterceptedService;
-use tonic::service::Interceptor;
 use tonic::transport::Channel;
-use crate::grpc::{InterceptorFunc, protobufs};
+use crate::grpc::InterceptorFunc;
 use crate::grpc::protobufs::account::account_client::AccountClient;
 use crate::grpc::protobufs::account::GetNexPasswordRequest;
 
@@ -42,7 +41,9 @@ pub enum Error{
     #[error(transparent)]
     Transport(#[from] transport::Error),
     #[error(transparent)]
-    Status(#[from] tonic::Status)
+    Status(#[from] tonic::Status),
+    #[error("invalid password size: {0}")]
+    PasswordConversion(#[from] TryFromSliceError)
 }
 
 pub type Result<T> = result::Result<T, Error>;
@@ -64,14 +65,14 @@ impl Client{
         Ok(Self(client))
     }
 
-    pub async fn get_nex_password(&mut self , pid: u32) -> Result<Box<str>>{
+    pub async fn get_nex_password(&mut self , pid: u32) -> Result<[u8; 16]>{
         let req = Request::new(GetNexPasswordRequest{
             pid
         });
 
         let response = self.0.get_nex_password(req).await?.into_inner();
 
-        Ok(response.password.into_boxed_str())
+        Ok(response.password.as_bytes().try_into()?)
     }
 }
 

src/grpc/mod.rs

@@ -1,6 +1,3 @@
-use std::env;
-use std::net::Ipv4Addr;
-use once_cell::sync::Lazy;
 use tonic::{Request, Status};
 
 type InterceptorFunc = Box<(dyn Fn(Request<()>) -> Result<Request<()>, Status> + Send)>;

src/kerberos/mod.rs

@@ -0,0 +1,111 @@
+use std::io::{Read, Write};
+use bytemuck::{bytes_of, Pod, Zeroable};
+use chrono::{Datelike, Timelike};
+use hmac::Hmac;
+use md5::{Digest, Md5};
+use rc4::{Rc4, Rc4Core, StreamCipher};
+use rc4::cipher::StreamCipherCoreWrapper;
+use rc4::consts::U16;
+use hmac::Mac;
+use rc4::KeyInit;
+use crate::rmc::structures::RmcSerialize;
+
+type Md5Hmac = Hmac<md5::Md5>;
+
+pub fn derive_key(pid: u32, password: [u8; 16]) -> [u8; 16]{
+    let iteration_count = 65000 + pid%1024;
+
+    let mut key = password;
+
+    for _ in 0..iteration_count {
+        let mut md5 = Md5::new();
+        md5.update(key);
+        key = md5.finalize().try_into().unwrap();
+    }
+
+    key
+}
+#[derive(Pod, Zeroable, Copy, Clone)]
+#[repr(transparent)]
+pub struct KerberosDateTime(u64);
+
+impl KerberosDateTime{
+    pub fn new(second: u64, minute: u64, hour: u64, day: u64, month: u64, year:u64 ) -> Self {
+        Self(second | (minute << 6) | (hour << 12) | (day << 17) | (month << 22) | (year << 26))
+    }
+
+    pub fn now() -> Self{
+        let now = chrono::Utc::now();
+        Self::new(
+            now.second() as u64,
+            now.minute() as u64,
+            now.hour() as u64,
+            now.day() as u64,
+            now.month() as u64,
+            now.year() as u64,
+        )
+    }
+}
+
+#[derive(Pod, Zeroable, Copy, Clone)]
+#[repr(C, packed)]
+pub struct TicketInternalData{
+    issued_time: KerberosDateTime,
+    pub pid: u32,
+    pub session_key: [u8; 32],
+}
+
+impl TicketInternalData{
+    pub(crate) fn new(pid: u32) -> Self{
+        Self{
+            issued_time: KerberosDateTime::now(),
+            pid,
+            session_key: rand::random()
+        }
+    }
+
+    pub(crate) fn encrypt(&self, key: [u8; 16]) -> Box<[u8]>{
+        let mut data = bytes_of(self).to_vec();
+
+        let mut rc4: StreamCipherCoreWrapper<Rc4Core<U16>> = Rc4::new_from_slice(&key).unwrap();
+        rc4.apply_keystream(&mut data);
+
+        let mut hmac = <Md5Hmac as KeyInit>::new_from_slice(&key).unwrap();
+
+        hmac.write_all(&data[..]).expect("failed to write data to hmac");
+
+        let hmac_result = &hmac.finalize().into_bytes()[..];
+
+        data.write_all(&hmac_result).expect("failed to write data to vec");
+
+        data.into_boxed_slice()
+    }
+}
+
+#[derive(Pod, Zeroable, Copy, Clone)]
+#[repr(C, packed)]
+pub struct Ticket{
+    pub session_key: [u8; 32],
+    pub pid: u32,
+}
+
+impl Ticket{
+    pub(crate) fn encrypt(&self, key: [u8; 16], internal_data: &[u8]) -> Box<[u8]>{
+        let mut data = bytes_of(self).to_vec();
+
+        internal_data.serialize(&mut data).expect("unable to write to vec");
+
+        let mut rc4: StreamCipherCoreWrapper<Rc4Core<U16>> = Rc4::new_from_slice(&key).unwrap();
+        rc4.apply_keystream(&mut data);
+
+        let mut hmac = <Md5Hmac as KeyInit>::new_from_slice(&key).unwrap();
+
+        hmac.write_all(&data[..]).expect("failed to write data to hmac");
+
+        let hmac_result = &hmac.finalize().into_bytes()[..];
+
+        data.write_all(&hmac_result).expect("failed to write data to vec");
+
+        data.into_boxed_slice()
+    }
+}

src/main.rs

@@ -11,6 +11,7 @@ use rc4::consts::U5;
 use simplelog::{ColorChoice, CombinedLogger, Config, LevelFilter, TerminalMode, TermLogger, WriteLogger};
 use crate::nex::account::Account;
 use crate::protocols::auth;
+use crate::protocols::auth::AuthProtocolConfig;
 use crate::protocols::server::RMCProtocolServer;
 use crate::prudp::socket::Socket;
 use crate::prudp::packet::{PRUDPPacket, VirtualPort};
@@ -24,9 +25,10 @@ mod protocols;
 
 mod nex;
 mod grpc;
+mod kerberos;
 
 static KERBEROS_SERVER_PASSWORD: Lazy<String> = Lazy::new(||{
-    env::var("AUTH_SERVER_PORT")
+    env::var("AUTH_SERVER_PASSWORD")
         .ok()
         .unwrap_or("password".to_owned())
 });
@@ -80,8 +82,15 @@ async fn start_servers(){
     info!("setting up endpoints");
 
     // dont assign it to the name _ as that will make it drop right here and now
+
+    let auth_protocol_config = AuthProtocolConfig{
+        secure_server_account: &SECURE_SERVER_ACCOUNT,
+        build_name: "branch:origin/project/wup-agmj build:3_8_15_2004_0",
+        station_url: "prudps:/PID=2;sid=1;stream=10;type=2;address=31.220.75.208;port=10001;CID=1"
+    };
+
     let rmcserver = RMCProtocolServer::new(Box::new([
-        Box::new(auth::bound_protocol(&SECURE_SERVER_ACCOUNT))
+        Box::new(auth::bound_protocol(auth_protocol_config))
     ]));
 
     let mut _socket =

src/nex/account.rs

@@ -1,18 +1,38 @@
 
 
 pub struct Account{
-    pid: u32,
+    pub pid: u32,
-    username: Box<str>,
+    pub username: Box<str>,
-    kerbros_password: Box<str>,
+    pub kerbros_password: [u8; 16],
 
 }
 
 impl Account{
     pub fn new(pid: u32, username: &str, passwd: &str) -> Self{
+        let passwd_data = passwd.as_bytes();
+
+        let mut passwd = [0u8; 16];
+
+        for (idx, byte) in passwd_data.iter().enumerate(){
+            passwd[idx] = *byte;
+        }
+
         Self{
-            kerbros_password: passwd.into(),
+            kerbros_password: passwd,
             username: username.into(),
             pid
         }
     }
+
+    pub fn new_raw_password(pid: u32, username: &str, passwd: [u8; 16]) -> Self{
+        Self{
+            kerbros_password: passwd,
+            username: username.into(),
+            pid
+        }
+    }
+
+    pub fn get_login_data(&self) -> (u32, [u8; 16]){
+        (self.pid, self.kerbros_password)
+    }
 }

src/protocols/auth/method_login.rs

@@ -1,17 +1,18 @@
 use std::io::Cursor;
 use log::error;
 use crate::nex::account::Account;
-use crate::protocols::auth::method_login_ex::login_ex;
+use crate::protocols::auth::AuthProtocolConfig;
 use crate::rmc::message::RMCMessage;
 use crate::rmc::response::{ErrorCode, RMCResponseResult};
-use crate::rmc::structures::any::Any;
 use crate::rmc::structures::RmcSerialize;
 
-pub async fn login(rmcmessage: &RMCMessage, name: &str) -> RMCResponseResult{
+pub async fn login(rmcmessage: &RMCMessage, _name: &str) -> RMCResponseResult{
+
+
     rmcmessage.error_result_with_code(ErrorCode::Core_NotImplemented)
 }
 
-pub async fn login_raw_params(rmcmessage: &RMCMessage, data: (&Account)) -> RMCResponseResult{
+pub async fn login_raw_params(rmcmessage: &RMCMessage, data: AuthProtocolConfig) -> RMCResponseResult{
     let mut reader = Cursor::new(&rmcmessage.rest_of_data);
 
     let Ok(str) = String::deserialize(&mut reader) else {

src/protocols/auth/method_login_ex.rs

@@ -1,13 +1,20 @@
-use std::io::Cursor;
+use std::io::{Cursor, Write};
-use log::{error, info};
+use bytemuck::bytes_of;
+use hex::encode;
+use log::{error};
 use crate::grpc::account;
+use crate::kerberos::KerberosDateTime;
 use crate::nex::account::Account;
+use crate::protocols::auth::AuthProtocolConfig;
+use crate::protocols::auth::ticket_generation::generate_ticket;
 use crate::rmc::message::RMCMessage;
 use crate::rmc::response::{ErrorCode, RMCResponseResult};
 use crate::rmc::structures::{RmcSerialize};
 use crate::rmc::structures::any::Any;
+use crate::rmc::structures::connection_data::ConnectionData;
+use crate::rmc::structures::qresult::QResult;
 
-pub async fn login_ex(rmcmessage: &RMCMessage, secure_server_account: &Account , pid: u32) -> RMCResponseResult{
+pub async fn login_ex(rmcmessage: &RMCMessage, proto_data: AuthProtocolConfig, pid: u32) -> RMCResponseResult{
     // todo: figure out how the AuthenticationInfo struct works, parse it and validate login info
 
     let Ok(mut client) = account::Client::new().await else {
@@ -18,15 +25,35 @@ pub async fn login_ex(rmcmessage: &RMCMessage, secure_server_account: &Account ,
         return rmcmessage.error_result_with_code(ErrorCode::Core_Exception);
     };
 
-    
+    let source_login_data = (pid, passwd);
+    let destination_login_data = proto_data.secure_server_account.get_login_data();
 
-    return rmcmessage.error_result_with_code(ErrorCode::Core_InvalidArgument);
+    let ticket = generate_ticket(source_login_data, destination_login_data);
+
+    let result = QResult::success(ErrorCode::Core_Unknown);
+
+    let connection_data = ConnectionData{
+        station_url: proto_data.station_url,
+        special_station_url: "",
+        date_time: KerberosDateTime::now(),
+        special_protocols: Vec::new()
+    };
+
+    let mut response: Vec<u8> = Vec::new();
+
+    result.serialize(&mut response).expect("failed serializing result");
+    response.write_all(bytes_of(&source_login_data.0)).expect("failed writing pid");
+    ticket.serialize(&mut response).expect("failed serializing ticket");
+    connection_data.serialize(&mut response).expect("failed writing connection data");
+    proto_data.build_name.serialize(&mut response).expect("failed writing build name");
+
+    return rmcmessage.success_with_data(response);
 }
 
-pub async fn login_ex_raw_params(rmcmessage: &RMCMessage, (secure_server_account): (&Account)) -> RMCResponseResult{
+pub async fn login_ex_raw_params(rmcmessage: &RMCMessage, data: AuthProtocolConfig) -> RMCResponseResult{
     let mut reader = Cursor::new(&rmcmessage.rest_of_data);
 
-    let Ok(_str) =  String::deserialize(&mut reader) else {
+    let Ok(str) =  String::deserialize(&mut reader) else {
         error!("error reading packet");
         return rmcmessage.error_result_with_code(ErrorCode::Core_InvalidArgument);
     };
@@ -50,5 +77,5 @@ pub async fn login_ex_raw_params(rmcmessage: &RMCMessage, (secure_server_account
         return rmcmessage.error_result_with_code(ErrorCode::Core_InvalidArgument);
     };
 
-    login_ex(rmcmessage, secure_server_account, pid).await
+    login_ex(rmcmessage, data, pid).await
 }

src/protocols/auth/method_request_ticket.rs

@@ -0,0 +1,53 @@
+use std::io::Cursor;
+use log::error;
+use crate::endianness::{IS_BIG_ENDIAN, ReadExtensions};
+use crate::grpc::account;
+use crate::protocols::auth::{AuthProtocolConfig, get_login_data_by_pid};
+use crate::protocols::auth::method_login_ex::login_ex;
+use crate::protocols::auth::ticket_generation::generate_ticket;
+use crate::rmc::message::RMCMessage;
+use crate::rmc::response::{ErrorCode, RMCResponseResult};
+use crate::rmc::response::ErrorCode::Core_Unknown;
+use crate::rmc::structures::any::Any;
+use crate::rmc::structures::qresult::QResult;
+use crate::rmc::structures::RmcSerialize;
+
+pub async fn request_ticket(rmcmessage: &RMCMessage, data: AuthProtocolConfig, source_pid: u32, destination_pid: u32) -> RMCResponseResult{
+    let Some(source_login_data) = get_login_data_by_pid(source_pid).await else {
+        return rmcmessage.error_result_with_code(ErrorCode::Core_Exception);
+    };
+
+    let desgination_login_data = if destination_pid == data.secure_server_account.pid{
+        data.secure_server_account.get_login_data()
+    } else {
+        let Some(login) = get_login_data_by_pid(destination_pid).await else {
+            return rmcmessage.error_result_with_code(ErrorCode::Core_Exception);
+        };
+        login
+    };
+
+    let result = QResult::success(Core_Unknown);
+
+    let ticket = generate_ticket(source_login_data, desgination_login_data);
+
+    let mut response: Vec<u8> = Vec::new();
+
+    result.serialize(&mut response).expect("failed serializing result");
+    ticket.serialize(&mut response).expect("failed serializing ticket");
+
+    rmcmessage.success_with_data(response)
+}
+
+pub async fn request_ticket_raw_params(rmcmessage: &RMCMessage, data: AuthProtocolConfig) -> RMCResponseResult{
+    let mut reader = Cursor::new(&rmcmessage.rest_of_data);
+
+    let Ok(source_pid) = reader.read_struct(IS_BIG_ENDIAN) else {
+        return rmcmessage.error_result_with_code(ErrorCode::Core_InvalidArgument);
+    };
+
+    let Ok(destination_pid) = reader.read_struct(IS_BIG_ENDIAN) else {
+        return rmcmessage.error_result_with_code(ErrorCode::Core_InvalidArgument);
+    };
+
+    request_ticket(rmcmessage, data, source_pid, destination_pid).await
+}

src/protocols/auth/mod.rs

@@ -1,18 +1,42 @@
 mod method_login_ex;
 mod method_login;
+mod ticket_generation;
+mod method_request_ticket;
 
+use std::sync::Arc;
 use log::{error};
 use crate::define_protocol;
+use crate::grpc::account;
 use crate::nex::account::Account;
 use crate::protocols::auth::method_login::login_raw_params;
-use crate::protocols::auth::method_login_ex::{login_ex, login_ex_raw_params};
+use crate::protocols::auth::method_login_ex::login_ex_raw_params;
+use crate::protocols::auth::method_request_ticket::request_ticket_raw_params;
 use crate::rmc::message::RMCMessage;
 use crate::rmc::response::{ErrorCode, RMCResponse};
 
+#[derive(Copy, Clone)]
+pub struct AuthProtocolConfig {
+    pub secure_server_account: &'static Account,
+    pub build_name: &'static str,
+    pub station_url: &'static str
+}
 
 define_protocol!{
-    10(secure_server_account: &'static Account) => {
+    10(proto_data: AuthProtocolConfig) => {
         0x01 => login_raw_params,
-        0x02 => login_ex_raw_params
+        0x02 => login_ex_raw_params,
+        0x03 => request_ticket_raw_params
     }
 }
+
+async fn get_login_data_by_pid(pid: u32) -> Option<(u32, [u8; 16])> {
+    let Ok(mut client) = account::Client::new().await else {
+        return None
+    };
+
+    let Ok(passwd) = client.get_nex_password(pid).await else{
+        return None
+    };
+
+    Some((pid, passwd))
+}

src/protocols/auth/ticket_generation.rs

@@ -0,0 +1,19 @@
+use crate::kerberos;
+use crate::kerberos::{derive_key, Ticket};
+
+
+pub fn generate_ticket(source_act_login_data: (u32, [u8;16]), dest_act_login_data: (u32, [u8;16])) -> Box<[u8]>{
+    let source_key = derive_key(source_act_login_data.0, source_act_login_data.1);
+    let dest_key = derive_key(dest_act_login_data.0, dest_act_login_data.1);
+
+    let internal_data = kerberos::TicketInternalData::new(source_act_login_data.0);
+
+    let encrypted_inner = internal_data.encrypt(dest_key);
+    let encrypted_session_ticket = Ticket{
+        pid: dest_act_login_data.0,
+        session_key: internal_data.session_key,
+    }.encrypt(source_key, &encrypted_inner);
+
+
+    encrypted_session_ticket
+}

src/protocols/mod.rs

@@ -3,6 +3,7 @@ pub mod server;
 #[macro_export]
 macro_rules! define_protocol {
     ($id:literal ($($varname:ident : $ty:ty),*) => {$($func_id:literal => $func:path),*} ) => {
+        #[allow(unused_parens)]
         async fn protocol (rmcmessage: &RMCMessage, $($varname : $ty),*) -> Option<RMCResponse>{
             if rmcmessage.protocol_id != $id{
                 return None;
@@ -30,7 +31,7 @@ macro_rules! define_protocol {
                 response_result
             })
         }
-
+        #[allow(unused_parens)]
         pub fn bound_protocol($($varname : $ty,)*) -> Box<dyn for<'message_lifetime> Fn(&'message_lifetime RMCMessage) -> ::std::pin::Pin<Box<dyn ::std::future::Future<Output = Option<RMCResponse>> + Send + 'message_lifetime>> + Send + Sync>{
             Box::new(
                 move |v| {

src/prudp/packet.rs

@@ -12,7 +12,7 @@ use hmac::{Hmac, Mac};
 use log::{error, trace, warn};
 use md5::{Md5, Digest};
 use thiserror::Error;
-use v_byte_macros::{EnumTryInto, SwapEndian};
+use v_byte_macros::{SwapEndian};
 use crate::endianness::{IS_BIG_ENDIAN, ReadExtensions};
 use crate::prudp::packet::flags::ACK;
 use crate::prudp::packet::PacketOption::{ConnectionSignature, FragmentId, InitialSequenceId, MaximumSubstreamId, SupportedFunctions};
@@ -173,13 +173,6 @@ impl Default for PRUDPHeader{
 }
 
 
-#[derive(EnumTryInto)]
-
-#[repr(u16)]
-enum PacketSpecificData {
-    E = 0x10
-}
-
 #[derive(Debug, Clone)]
 pub enum PacketOption{
     SupportedFunctions(u32),

src/prudp/socket.rs

@@ -42,7 +42,6 @@ pub struct ActiveConnectionData {
     pub reliable_client_counter: u16,
     pub reliable_server_counter: u16,
     pub reliable_client_queue: VecDeque<PRUDPPacket>,
-    pub connection_data_channel: Sender<Vec<u8>>,
     server_encryption: Box<dyn StreamCipher + Send>,
     client_decryption: Box<dyn StreamCipher + Send>,
     pub server_session_id: u8,
@@ -363,7 +362,7 @@ impl SocketData {
                     self.socket.send_to(&vec, client_address.regular_socket_addr).await.expect("failed to send data back");
                 }
             }
-
+            3 => {}
             _ => unimplemented!("unimplemented packet type: {}", packet.header.types_and_flags.get_types())
         }
     }

src/rmc/message.rs

@@ -58,4 +58,12 @@ impl RMCMessage{
             error_code
         }
     }
+
+    pub fn success_with_data(&self, data: Vec<u8>) -> RMCResponseResult{
+        RMCResponseResult::Success {
+            call_id: self.call_id,
+            method_id: self.method_id,
+            data
+        }
+    }
 }

src/rmc/response.rs

@@ -8,6 +8,8 @@ use crate::prudp::packet::PacketOption::FragmentId;
 use crate::prudp::packet::types::DATA;
 use crate::prudp::socket::{ConnectionData, SocketData};
 
+
+
 pub enum RMCResponseResult {
     Success{
         call_id: u32,
@@ -389,6 +391,7 @@ mod test{
     use hmac::digest::consts::U5;
     use hmac::digest::KeyInit;
     use rc4::{Rc4, StreamCipher};
+    use crate::rmc::response::ErrorCode;
 
     #[test]
     fn test(){
@@ -410,4 +413,10 @@ mod test{
         assert_eq!(data_orig, data);
 
     }
+
+    #[test]
+    fn test_enum_equivilance(){
+        let val: u32 = ErrorCode::Core_Unknown.into();
+        assert_eq!(val, 0x00010001)
+    }
 }

src/rmc/structures/buffer.rs

@@ -0,0 +1,44 @@
+use std::io::{Read, Write};
+use crate::endianness::{IS_BIG_ENDIAN, ReadExtensions};
+use crate::rmc::structures::RmcSerialize;
+
+impl<'a> RmcSerialize for &'a [u8]{
+    fn serialize(&self, writer: &mut dyn Write) -> crate::rmc::structures::Result<()> {
+        let u32_size = self.len() as u32;
+        writer.write(bytemuck::bytes_of(&u32_size))?;
+        writer.write(self)?;
+
+        Ok(())
+    }
+
+    /// DO NOT USE (also maybe split off the serialize and deserialize functions at some point)
+    fn deserialize(reader: &mut dyn Read) -> crate::rmc::structures::Result<Self> {
+        panic!("cannot deserialize to a u8 slice reference (use this ONLY for writing)")
+    }
+}
+
+impl<'a> RmcSerialize for Vec<u8>{
+    fn serialize(&self, writer: &mut dyn Write) -> crate::rmc::structures::Result<()> {
+        (&self[..]).serialize(writer)
+    }
+
+    fn deserialize(mut reader: &mut dyn Read) -> crate::rmc::structures::Result<Self> {
+        let len: u32 = reader.read_struct(IS_BIG_ENDIAN)?;
+
+        let mut data = vec![0; len as usize];
+
+        reader.read_exact(&mut data)?;
+
+        Ok(data)
+    }
+}
+
+impl<'a> RmcSerialize for Box<[u8]>{
+    fn serialize(&self, writer: &mut dyn Write) -> crate::rmc::structures::Result<()> {
+        (&self[..]).serialize(writer)
+    }
+
+    fn deserialize(reader: &mut dyn Read) -> crate::rmc::structures::Result<Self> {
+        Vec::deserialize(reader).map(|v| v.into_boxed_slice())
+    }
+}

src/rmc/structures/connection_data.rs

@@ -0,0 +1,27 @@
+use std::io::{Read, Write};
+use bytemuck::bytes_of;
+use crate::kerberos::KerberosDateTime;
+use crate::rmc::structures::{rmc_struct, RmcSerialize};
+
+pub struct ConnectionData<'a>{
+    pub station_url: &'a str,
+    pub special_protocols: Vec<u8>,
+    pub special_station_url: &'a str,
+    pub date_time: KerberosDateTime
+}
+
+impl<'a> RmcSerialize for ConnectionData<'a>{
+    fn serialize(&self, writer: &mut dyn Write) -> crate::rmc::structures::Result<()> {
+        rmc_struct::write_struct(writer, 1, |mut v|{
+            self.station_url.serialize(v).expect("unable to write station url");
+            self.special_protocols.serialize(v).expect("unable to write special protocols");
+            self.special_station_url.serialize(v).expect("unable to write special station url");
+            v.write_all(bytes_of(&self.date_time)).expect("unable to write date time");
+        })
+    }
+
+    fn deserialize(reader: &mut dyn Read) -> crate::rmc::structures::Result<Self> {
+        todo!()
+    }
+}
+

src/rmc/structures/list.rs

@@ -0,0 +1,21 @@
+use std::io::{Read, Write};
+use bytemuck::bytes_of;
+use crate::rmc::structures::RmcSerialize;
+
+
+impl<T: RmcSerialize> RmcSerialize for Vec<T>{
+    fn serialize(&self, writer: &mut dyn Write) -> crate::rmc::structures::Result<()> {
+        let u32_len = self.len();
+
+        writer.write_all(bytes_of(&u32_len))?;
+        for e in self{
+            e.serialize(writer)?;
+        }
+
+        Ok(())
+    }
+
+    fn deserialize(reader: &mut dyn Read) -> crate::rmc::structures::Result<Self> {
+        todo!()
+    }
+}

src/rmc/structures/mod.rs

@@ -17,6 +17,11 @@ type Result<T> = std::result::Result<T, Error>;
 
 pub mod string;
 pub mod any;
+pub mod qresult;
+pub mod buffer;
+pub mod connection_data;
+pub mod rmc_struct;
+pub mod list;
 
 pub trait RmcSerialize: Sized{
     fn serialize(&self, writer: &mut dyn Write) -> Result<()>;

src/rmc/structures/qresult.rs

@@ -0,0 +1,37 @@
+use std::io::{Read, Write};
+use bytemuck::{bytes_of, Pod, Zeroable};
+use v_byte_macros::SwapEndian;
+use crate::endianness::{IS_BIG_ENDIAN, ReadExtensions};
+use crate::rmc::response::ErrorCode;
+use crate::rmc::structures::{RmcSerialize, Result};
+
+const ERROR_MASK: u32 =  1 << 31;
+
+#[derive(Pod, Zeroable, Copy, Clone, SwapEndian)]
+#[repr(transparent)]
+pub struct QResult(u32);
+
+impl QResult{
+    pub fn success(error_code: ErrorCode) -> Self{
+        let val: u32 = error_code.into();
+
+        Self(val & (!ERROR_MASK))
+    }
+
+    pub fn error(error_code: ErrorCode) -> Self{
+        let val: u32 = error_code.into();
+
+        Self(val | ERROR_MASK)
+    }
+}
+
+impl RmcSerialize for QResult{
+    fn serialize(&self, writer: &mut dyn Write) -> Result<()> {
+        writer.write(bytes_of(self))?;
+        Ok(())
+    }
+
+    fn deserialize(mut reader: &mut dyn Read) -> Result<Self> {
+        Ok(reader.read_struct(IS_BIG_ENDIAN)?)
+    }
+}

src/rmc/structures/rmc_struct.rs

@@ -0,0 +1,24 @@
+use std::io::Write;
+use bytemuck::bytes_of;
+use crate::rmc::structures::Result;
+
+#[repr(C, packed)]
+struct StructureHeader{
+    version: u8,
+    length: u32
+}
+
+pub fn write_struct(mut writer: &mut dyn Write, version: u8, pred: impl Fn(&mut Vec<u8>)) -> Result<()> {
+    writer.write_all(&[version])?;
+
+    let mut scratch_space: Vec<u8> = Vec::new();
+
+    (pred)(&mut scratch_space);
+
+    let u32_size= scratch_space.len() as u32;
+
+    writer.write_all(bytes_of(&u32_size))?;
+    writer.write_all(&scratch_space)?;
+
+    Ok(())
+}

src/rmc/structures/string.rs

@@ -17,6 +17,15 @@ impl RmcSerialize for String{
 
         Ok(String::from_utf8(data)?)
     }
+    fn serialize(&self, writer: &mut dyn Write) -> Result<()> {
+        (&self[..]).serialize(writer)
+    }
+}
+
+impl RmcSerialize for &str{
+    fn deserialize(mut reader: &mut dyn Read) -> Result<Self> {
+        panic!("cannot serialize to &str")
+    }
     fn serialize(&self, writer: &mut dyn Write) -> Result<()> {
         let u16_len: u16 = self.len() as u16;
         writer.write(bytes_of(&u16_len))?;