From 2af878c03efe424be97cb295b8916aae7ff7ae94 Mon Sep 17 00:00:00 2001
From: Lucas Schumacher <technolucas@protonmail.com>
Date: Sat, 30 Dec 2023 11:20:20 -0500
Subject: [PATCH] First proof of concept

---
 .gitignore  |   1 +
 Cargo.lock  | 716 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 Cargo.toml  |  12 +
 src/main.rs | 154 +++++++++++
 4 files changed, 883 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Cargo.lock
 create mode 100644 Cargo.toml
 create mode 100644 src/main.rs

diff --git a/.gitignore b/.gitignore
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diff --git a/Cargo.lock b/Cargo.lock
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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..08d1424
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "minipac-gateway"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+anyhow = "1.0.77"
+clap = { version = "4.4.11", features = ["derive"] }
+minipac = "0.3.1"
+tokio = { version = "1.35.1", features = ["full"] }
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..cda79ec
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,154 @@
+use clap::{Parser, Subcommand};
+use minipac::{client::Client, hostname::Hostname, server::Server, stream::Stream};
+use std::io;
+use std::time::Duration;
+
+#[derive(Parser, Debug)]
+#[command(author, version, about, long_about = None)]
+struct Args {
+    /// TCP/IP Address of kiss tnc
+    #[arg(short, long, default_value_t = String::from("127.0.0.1:8001"))]
+    kiss_tnc: String,
+
+    /// Callsign
+    #[arg(short)]
+    callsign: String,
+
+    /// SSID
+    #[arg(short, long, default_value_t = 0)]
+    ssid: u8,
+
+    /// The baudrate to use, in bps
+    #[arg(short, long, default_value_t = 1200)]
+    baudrate: usize,
+
+    /// The maximum packet size. Dependant on your KISS TNC
+    #[arg(short, long, default_value_t = 1000)]
+    packet_size: usize,
+
+    /// The maximum amount of retries to make before aborting
+    #[arg(short, long, default_value_t = 5)]
+    retries: usize,
+
+    /// The amount of time to wait for a reply (in seconds)
+    #[arg(short, long, default_value_t = 4.0)]
+    timeout: f32,
+
+    #[command(subcommand)]
+    command: Commands,
+}
+
+#[derive(Subcommand, Debug)]
+enum Commands {
+    Serve,
+    Recv,
+}
+
+async fn serv_echo_test(
+    me: &Hostname,
+    caller: Hostname,
+    mut stream: Stream,
+) -> Result<(), minipac::error::Error> {
+    stream
+        .write(
+            format!("{me} Echo Test\nHello {caller} I will repeat what you send to me",)
+                .into_bytes(),
+        )
+        .await?;
+    loop {
+        let data = stream.read().await?;
+        stream.write(data).await?;
+    }
+}
+/*async fn connect_text_mode(
+    me: &Hostname,
+    hostname: Hostname,
+    mut stream: Stream,
+) -> Result<(), minipac::error::Error> {
+}*/
+#[tokio::main]
+async fn main() -> anyhow::Result<()> {
+    let args = Args::parse();
+
+    println!("tnc: {:?}", args.kiss_tnc);
+    println!("callsign: {}-{}", args.callsign, args.ssid);
+    let me = Hostname::new(&format!("{}-{}", args.callsign, args.ssid)).unwrap();
+    println!("hostname: {}", me);
+    let hostname = me.clone();
+
+    match &args.command {
+        Commands::Serve => {
+            let mut server = Server::new_tcp(
+                args.kiss_tnc,
+                hostname,
+                Duration::from_secs_f32(args.timeout),
+                args.packet_size,
+                args.retries,
+                args.baudrate,
+            )
+            .await?;
+
+            loop {
+                let (caller, stream) = server.accept().await?;
+                tokio::spawn(async move {
+                    if let Err(e) = serv_echo_test(&me, caller, stream).await {
+                        println!("Client Dropped: {e}");
+                    }
+                });
+            }
+        }
+        Commands::Recv => {
+            let client = Client::new_tcp(
+                args.kiss_tnc,
+                hostname,
+                Duration::from_secs_f32(args.timeout),
+                args.packet_size,
+                args.retries,
+                args.baudrate,
+            )
+            .await?;
+            let server = Hostname::new(&format!("{}-{}", args.callsign, args.ssid + 1)).unwrap();
+            let stream = client.connect(server).await?;
+            let (mut rx, mut tx) = stream.split();
+
+            tokio::spawn(async move {
+                loop {
+                    match rx.read().await {
+                        Ok(data) => {
+                            if let Ok(string) = String::from_utf8(data) {
+                                println!("{}", string);
+                            } else {
+                                println!("Rx not valid utf-8")
+                            }
+                        }
+                        Err(e) => {
+                            println!("Recv error: {e}");
+                            break;
+                        }
+                    }
+                }
+            });
+
+            let mut buffer = String::new();
+            loop {
+                // TODO FIXME use tokio io not std!?!?
+                match io::stdin().read_line(&mut buffer) {
+                    Ok(0) => {
+                        println!("Exiting...");
+                        break;
+                    }
+                    Ok(_) => {
+                        tx.write(buffer.clone().into_bytes()).await?;
+                    }
+                    Err(e) => {
+                        println!("Tx Error: {e}");
+                        break;
+                    }
+                }
+                buffer.clear();
+            }
+        }
+    }
+
+    Ok(())
+}