From 18c8ec77dd2b1f1fecbe81e924cd1cbfbd421498 Mon Sep 17 00:00:00 2001
From: Maple <maple.neb@gmail.com>
Date: Sun, 26 Apr 2026 14:36:42 +0200
Subject: [PATCH] some small things

---
 rnex-core/Cargo.toml  |  9 +++++--
 rnex-core/src/util.rs | 61 +++++++++++++++++++++++++++++--------------
 2 files changed, 48 insertions(+), 22 deletions(-)

diff --git a/rnex-core/Cargo.toml b/rnex-core/Cargo.toml
index ff2b7b3..8d72719 100644
--- a/rnex-core/Cargo.toml
+++ b/rnex-core/Cargo.toml
@@ -13,7 +13,8 @@ v-byte-helpers = { git = "https://github.com/RusticMaple/VByteMacros", version =
 simplelog = "0.12.2"
 chrono = "0.4.39"
 log = "0.4.25"
-rand = "0.8.5"
+rand = "0.8.5
+"
 cfg-if = "1.0.4"
 hmac = "0.12.1"
 md-5 = "^0.10.6"
@@ -29,13 +30,17 @@ ureq = { version = "3.1.4", features = [ "json" ] }
 serde = { version = "1.0.228", features = [ "derive" ] }
 serde_json = "1.0.149"
 
+[dependencies.sqlx]
+version = "0.8.6"
+optional = true
+
 [dev-dependencies]
 # criterion = "0.7.0"
 
 [features]
 rmc_struct_header = []
 guest_login = []
-friends = ["guest_login"]
+friends = ["guest_login", "dep:sqlx"]
 big_pid = []
 v3-8-15 = ["rmc_struct_header"]
 v4-3-11 = ["v3-8-15"]
diff --git a/rnex-core/src/util.rs b/rnex-core/src/util.rs
index ff0150c..582c09b 100644
--- a/rnex-core/src/util.rs
+++ b/rnex-core/src/util.rs
@@ -1,24 +1,26 @@
-use std::ops::Deref;
-use std::sync::Arc;
-use log::{error, info};
-use tokio::io::{AsyncRead, AsyncWrite, AsyncWriteExt};
-use tokio::sync::mpsc::{channel, Receiver, Sender};
-use tokio::sync::Notify;
-use tokio::task;
 use crate::reggie::{UnitPacketRead, UnitPacketWrite};
+use log::{error, info};
+use std::iter::FilterMap;
+use std::ops::Deref;
+use std::sync::{Arc, Weak};
+use std::{slice, vec};
+use tokio::io::{AsyncRead, AsyncWrite, AsyncWriteExt};
+use tokio::sync::Notify;
+use tokio::sync::mpsc::{Receiver, Sender, channel};
+use tokio::task;
 
 #[derive(Clone)]
 pub struct SendingBufferConnection(Sender<Vec<u8>>, Arc<Notify>);
 
 pub struct SplittableBufferConnection(SendingBufferConnection, Receiver<Vec<u8>>);
 
-impl AsRef<SendingBufferConnection> for SplittableBufferConnection{
+impl AsRef<SendingBufferConnection> for SplittableBufferConnection {
     fn as_ref(&self) -> &SendingBufferConnection {
         &self.0
     }
 }
 
-impl Deref for SplittableBufferConnection{
+impl Deref for SplittableBufferConnection {
     type Target = SendingBufferConnection;
 
     fn deref(&self) -> &Self::Target {
@@ -26,9 +28,7 @@ impl Deref for SplittableBufferConnection{
     }
 }
 
-
-
-impl<T: Send + Unpin + AsyncWrite + AsyncRead + 'static> From<T> for SplittableBufferConnection{
+impl<T: Send + Unpin + AsyncWrite + AsyncRead + 'static> From<T> for SplittableBufferConnection {
     fn from(value: T) -> Self {
         Self::new(value)
     }
@@ -48,7 +48,6 @@ impl SplittableBufferConnection {
                 let mut recver = inside_recv;
                 let mut stream = stream;
 
-
                 loop {
                     tokio::select! {
                         data = recver.recv() => {
@@ -81,7 +80,7 @@ impl SplittableBufferConnection {
                         }
                     }
                 }
-                if let Err(e) = stream.shutdown().await{
+                if let Err(e) = stream.shutdown().await {
                     error!("failed to shut down stream: {}", e);
                 }
             });
@@ -91,11 +90,11 @@ impl SplittableBufferConnection {
     }
 }
 
-impl SendingBufferConnection{
-    pub async fn send(&self, buffer: Vec<u8>) -> Option<()>{
+impl SendingBufferConnection {
+    pub async fn send(&self, buffer: Vec<u8>) -> Option<()> {
         self.0.send(buffer).await.ok()
     }
-    pub fn is_alive(&self) -> bool{
+    pub fn is_alive(&self) -> bool {
         !self.0.is_closed()
     }
     pub async fn disconnect(&self) {
@@ -106,12 +105,34 @@ impl SendingBufferConnection{
     }
 }
 
-impl SplittableBufferConnection{
-    pub async fn recv(&mut self) -> Option<Vec<u8>>{
+impl SplittableBufferConnection {
+    pub async fn recv(&mut self) -> Option<Vec<u8>> {
         self.1.recv().await
     }
 
-    pub fn duplicate_sender(&self) -> SendingBufferConnection{
+    pub fn duplicate_sender(&self) -> SendingBufferConnection {
         self.0.clone()
     }
 }
+
+struct WeakVec<T>(Vec<Weak<T>>);
+
+impl<T> WeakVec<T> {
+    pub fn new() -> Self {
+        Self(vec![])
+    }
+
+    pub fn from_vec(vec: Vec<Weak<T>>) -> Self {
+        Self(vec)
+    }
+
+    pub fn push(&mut self, val: Weak<T>) {
+        self.0.retain(|v| v.upgrade().is_some());
+
+        self.0.push(val);
+    }
+
+    pub fn iter(&self) -> impl Iterator<Item = Arc<T>> {
+        self.0.iter().filter_map(|w| w.upgrade())
+    }
+}