From 6e44faedd52b26dc10287e7e15a928742692cb4e Mon Sep 17 00:00:00 2001 From: Trevor Merritt Date: Mon, 21 Jul 2025 08:08:29 -0400 Subject: [PATCH] Initial commit Vibe Coded with Copilot to build this. --- .cargo/config.toml | 2 + .gitignore | 1 + Cargo.lock | 530 +++++++++++++++++++++++++++++++++++++++++++++ Cargo.toml | 10 + cli/Cargo.lock | 7 + cli/Cargo.toml | 11 + cli/src/main.rs | 114 ++++++++++ 7 files changed, 675 insertions(+) create mode 100644 .cargo/config.toml create mode 100644 .gitignore create mode 100644 Cargo.lock create mode 100644 Cargo.toml create mode 100644 cli/Cargo.lock create mode 100644 cli/Cargo.toml create mode 100644 cli/src/main.rs diff --git a/.cargo/config.toml b/.cargo/config.toml new file mode 100644 index 0000000..320b8e2 --- /dev/null +++ b/.cargo/config.toml @@ -0,0 +1,2 @@ +[alias] +coverage = "tarpaulin --out Html --skip-clean --output-dir coverage" diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..ea8c4bf --- /dev/null +++ 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+log.workspace = true +clap.workspace = true +trevors_utilities.workspace = true +colored.workspace = true \ No newline at end of file diff --git a/cli/src/main.rs b/cli/src/main.rs new file mode 100644 index 0000000..7de6c02 --- /dev/null +++ b/cli/src/main.rs @@ -0,0 +1,114 @@ +use clap::Parser; +use std::fs::{create_dir_all, File}; +use std::io::{Read, Write}; +use std::net::{TcpListener, TcpStream}; +use std::path::PathBuf; +use std::sync::atomic::{AtomicUsize, Ordering}; +use std::thread; +use std::time::SystemTime; + +/// Simple TCP proxy that logs traffic per client +#[derive(Parser, Debug)] +#[command(author, version, about)] +struct Args { + /// Host to listen on + #[arg(long)] + listen_host: String, + + /// Port to listen on + #[arg(long)] + listen_port: u16, + + /// Host to connect to + #[arg(long)] + connect_host: String, + + /// Port to connect to + #[arg(long)] + connect_port: u16, +} + +static CLIENT_ID: AtomicUsize = AtomicUsize::new(0); + +fn main() -> std::io::Result<()> { + let args = Args::parse(); + + let listen_addr = format!("{}:{}", args.listen_host, args.listen_port); + let target_addr = format!("{}:{}", args.connect_host, args.connect_port); + + let listener = TcpListener::bind(&listen_addr)?; + println!("Proxy listening on {}", listen_addr); + + for stream in listener.incoming() { + let stream = stream?; + let target = target_addr.clone(); + let client_id = CLIENT_ID.fetch_add(1, Ordering::SeqCst); + thread::spawn(move || { + if let Err(e) = handle_client(stream, &target, client_id) { + eprintln!("Error handling client {}: {}", client_id, e); + } + }); + } + + Ok(()) +} + +fn handle_client(mut client: TcpStream, target: &str, client_id: usize) -> std::io::Result<()> { + let mut server = TcpStream::connect(target)?; + let timestamp = SystemTime::now() + .duration_since(SystemTime::UNIX_EPOCH) + .unwrap_or_else(|_| std::time::Duration::from_secs(0)) + .as_secs(); + + let log_dir = PathBuf::from("logs"); + create_dir_all(&log_dir)?; + let mut log_file = File::create(log_dir.join(format!("client_{}_{}.log", client_id, timestamp)))?; + + let mut client_clone = client.try_clone()?; + let mut server_clone = server.try_clone()?; + + let log_file_clone = log_file.try_clone()?; + + let client_to_server = thread::spawn(move || { + proxy_data(&mut client_clone, &mut server, log_file_clone, true) + }); + + let server_to_client = thread::spawn(move || { + proxy_data(&mut server_clone, &mut client, log_file, false) + }); + + client_to_server.join().unwrap()?; + server_to_client.join().unwrap()?; + + Ok(()) +} + +fn proxy_data( + reader: &mut TcpStream, + writer: &mut TcpStream, + mut log_file: File, + from_client: bool, +) -> std::io::Result<()> { + let mut buffer = [0u8; 1024]; + loop { + let n = reader.read(&mut buffer)?; + if n == 0 { + break; + } + + writer.write_all(&buffer[..n])?; + + let direction = if from_client { "Client -> Server" } else { "Server -> Client" }; + writeln!(log_file, "\n[{}] {} bytes", direction, n)?; + + for chunk in buffer[..n].chunks(16) { + let hex: String = chunk.iter().map(|b| format!("{:02X} ", b)).collect(); + let ascii: String = chunk + .iter() + .map(|b| if b.is_ascii_graphic() { *b as char } else { '.' }) + .collect(); + writeln!(log_file, "{:<48} {}", hex, ascii)?; + } + } + Ok(()) +}