diff --git a/Cargo.lock b/Cargo.lock index 5144ad8..5134a86 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -2,6 +2,21 @@ # It is not intended for manual editing. version = 4 +[[package]] +name = "addr2line" +version = "0.24.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "dfbe277e56a376000877090da837660b4427aad530e3028d44e0bffe4f89a1c1" +dependencies = [ + "gimli", +] + +[[package]] +name = "adler2" +version = "2.0.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "320119579fcad9c21884f5c4861d16174d0e06250625266f50fe6898340abefa" + [[package]] name = "aho-corasick" version = "1.1.3" @@ -47,7 +62,7 @@ version = "1.1.3" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "6c8bdeb6047d8983be085bab0ba1472e6dc604e7041dbf6fcd5e71523014fae9" dependencies = [ - "windows-sys", + "windows-sys 0.59.0", ] [[package]] @@ -58,9 +73,48 @@ checksum = "403f75924867bb1033c59fbf0797484329750cfbe3c4325cd33127941fabc882" dependencies = [ "anstyle", "once_cell_polyfill", - "windows-sys", + "windows-sys 0.59.0", ] +[[package]] +name = "autocfg" +version = "1.5.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "c08606f8c3cbf4ce6ec8e28fb0014a2c086708fe954eaa885384a6165172e7e8" + +[[package]] +name = "backtrace" +version = "0.3.75" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "6806a6321ec58106fea15becdad98371e28d92ccbc7c8f1b3b6dd724fe8f1002" +dependencies = [ + "addr2line", + "cfg-if", + "libc", + "miniz_oxide", + "object", + "rustc-demangle", + "windows-targets", +] + +[[package]] +name = "bitflags" +version = "2.9.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "1b8e56985ec62d17e9c1001dc89c88ecd7dc08e47eba5ec7c29c7b5eeecde967" + +[[package]] +name = "bytes" +version = "1.10.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = 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"env_filter", - "jiff", - "log", -] +checksum = "07e28edb80900c19c28f1072f2e8aeca7fa06b23cd4169cefe1af5aa3260783f" [[package]] name = "heck" @@ -143,27 +180,25 @@ source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "7943c866cc5cd64cbc25b2e01621d07fa8eb2a1a23160ee81ce38704e97b8ecf" [[package]] -name = "jiff" -version = "0.2.15" +name = "lazy_static" +version = "1.5.0" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "be1f93b8b1eb69c77f24bbb0afdf66f54b632ee39af40ca21c4365a1d7347e49" -dependencies = [ - "jiff-static", - "log", - "portable-atomic", - "portable-atomic-util", - "serde", -] +checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe" [[package]] -name = "jiff-static" -version = "0.2.15" +name = "libc" +version = "0.2.174" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "03343451ff899767262ec32146f6d559dd759fdadf42ff0e227c7c48f72594b4" +checksum = 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[[package]] @@ -226,6 +336,15 @@ dependencies = [ "proc-macro2", ] +[[package]] +name = "redox_syscall" +version = "0.5.13" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "0d04b7d0ee6b4a0207a0a7adb104d23ecb0b47d6beae7152d0fa34b692b29fd6" +dependencies = [ + "bitflags", +] + [[package]] name = "regex" version = "1.11.1" @@ -234,8 +353,17 @@ checksum = "b544ef1b4eac5dc2db33ea63606ae9ffcfac26c1416a2806ae0bf5f56b201191" dependencies = [ "aho-corasick", "memchr", - "regex-automata", - "regex-syntax", + "regex-automata 0.4.9", + "regex-syntax 0.8.5", +] + +[[package]] +name = "regex-automata" +version = "0.1.10" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "6c230d73fb8d8c1b9c0b3135c5142a8acee3a0558fb8db5cf1cb65f8d7862132" +dependencies = [ + "regex-syntax 0.6.29", ] [[package]] @@ -246,9 +374,15 @@ checksum = "809e8dc61f6de73b46c85f4c96486310fe304c434cfa43669d7b40f711150908" dependencies = [ "aho-corasick", "memchr", - 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"712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f" + +[[package]] +name = "windows-sys" +version = "0.52.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d" +dependencies = [ + "windows-targets", +] + [[package]] name = "windows-sys" version = "0.59.0" diff --git a/Cargo.toml b/Cargo.toml index 4922fd1..dbd6055 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -7,5 +7,6 @@ edition = "2021" [dependencies] clap = { version = "4.5.4", features = ["derive", "env"] } -env_logger = "0.11.8" -log = "0.4.27" +tokio = { version = "1.0", features = ["full"] } +tracing = "0.1.41" +tracing-subscriber = { version = "0.3.19", features = ["env-filter"] } diff --git a/src/main.rs b/src/main.rs index c37c70f..364fe55 100644 --- a/src/main.rs +++ b/src/main.rs @@ -1,9 +1,32 @@ use clap::Parser; -use std::io; -use std::net::{TcpStream, ToSocketAddrs, UdpSocket}; use std::str::FromStr; -use std::thread; use std::time::Duration; +use tokio::io::{AsyncReadExt, AsyncWriteExt}; +use tokio::net::{TcpStream, UdpSocket}; + +// Custom copy function that flushes after each write to avoid buffering +async fn copy_with_flush(reader: &mut R, writer: &mut W) -> tokio::io::Result +where + R: AsyncReadExt + Unpin, + W: AsyncWriteExt + Unpin, +{ + let mut buf = [0u8; 1024]; // Use a small buffer for low latency + let mut total_copied = 0u64; + + loop { + match reader.read(&mut buf).await { + Ok(0) => break, // EOF + Ok(n) => { + writer.write_all(&buf[..n]).await?; + writer.flush().await?; // Flush immediately to avoid buffering + total_copied += n as u64; + } + Err(e) => return Err(e), + } + } + + Ok(total_copied) +} #[derive(Debug, Clone)] enum Protocol { @@ -51,11 +74,11 @@ struct Cli { knock: Vec, } -fn main() -> Result<(), Box> { +#[tokio::main] +async fn main() -> Result<(), Box> { let cli = Cli::parse(); - env_logger::builder().target(env_logger::Target::Stderr).init(); - + tracing_subscriber::fmt().with_writer(std::io::stderr).init(); let (target_host, _target_port) = { let parts: Vec<&str> = cli.target_address.split(':').collect(); @@ -65,50 +88,55 @@ fn main() -> Result<(), Box> { (parts[0], parts[1].parse::()?) }; - log::info!("Starting port knocking sequence..."); + tracing::info!("Starting port knocking sequence..."); for knock_target in &cli.knock { - let addr = format!("{}:{}", target_host, knock_target.port) - .to_socket_addrs()? - .next() - .ok_or("Could not resolve host")?; + let addr = format!("{}:{}", target_host, knock_target.port); match knock_target.protocol { Protocol::Tcp => { - log::debug!("Knocking on TCP port {}", knock_target.port); - let timeout = Duration::from_secs(1); - if TcpStream::connect_timeout(&addr, timeout).is_err() { + tracing::debug!("Knocking on TCP port {}", knock_target.port); + // Use tokio's timeout for TCP knocking + let connect_future = TcpStream::connect(&addr); + if tokio::time::timeout(Duration::from_secs(1), connect_future).await.is_err() { // We expect errors here, like connection refused or timeout. // The goal is just to hit the port. } } Protocol::Udp => { - log::debug!("Knocking on UDP port {}", knock_target.port); - let socket = UdpSocket::bind("0.0.0.0:0")?; - socket.send_to(&[], addr)?; + tracing::debug!("Knocking on UDP port {}", knock_target.port); + let socket = UdpSocket::bind("0.0.0.0:0").await?; + socket.send_to(&[], &addr).await?; } } } - log::debug!("Knocking sequence finished. Connecting to {}...", cli.target_address); + tracing::debug!("Knocking sequence finished. Connecting to {}...", cli.target_address); - let mut stream = TcpStream::connect(&cli.target_address)?; - let mut stream_clone = stream.try_clone()?; + let stream = TcpStream::connect(&cli.target_address).await?; - log::info!("Connection established. Proxying data..."); + tracing::info!("Connection established. Proxying data..."); - let stdin_thread = thread::spawn(move || { - let mut stdin = io::stdin(); - io::copy(&mut stdin, &mut stream_clone).ok(); - }); + // Split the stream for bidirectional communication + let (mut stream_read, mut stream_write) = stream.into_split(); + + // Create stdin and stdout handles + let mut stdin = tokio::io::stdin(); + let mut stdout = tokio::io::stdout(); - let stdout_thread = thread::spawn(move || { - let mut stdout = io::stdout(); - io::copy(&mut stream, &mut stdout).ok(); - }); - - stdin_thread.join().unwrap(); - stdout_thread.join().unwrap(); + // Use tokio::select! to handle bidirectional data transfer + tokio::select! { + result = copy_with_flush(&mut stdin, &mut stream_write) => { + if let Err(e) = result { + tracing::error!("Error copying from stdin to stream: {}", e); + } + } + result = copy_with_flush(&mut stream_read, &mut stdout) => { + if let Err(e) = result { + tracing::error!("Error copying from stream to stdout: {}", e); + } + } + } Ok(()) }