From ceaa25c8baf2294458c1560b3292c00c57b0fa1b Mon Sep 17 00:00:00 2001 From: Mroik Date: Tue, 7 Apr 2026 10:35:35 +0200 Subject: Add SMTP server scaffolding Signed-off-by: Mroik --- Cargo.lock | 251 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Cargo.toml | 3 + src/main.rs | 1 + src/smtp.rs | 71 +++++++++++++++++ 4 files changed, 326 insertions(+) create mode 100644 src/smtp.rs diff --git a/Cargo.lock b/Cargo.lock index 78b6604..48808ba 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -2,6 +2,65 @@ # It is not intended for manual editing. version = 4 +[[package]] +name = "aho-corasick" +version = "1.1.4" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "ddd31a130427c27518df266943a5308ed92d4b226cc639f5a8f1002816174301" +dependencies = [ + "memchr", +] + +[[package]] +name = "anstream" +version = "1.0.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "824a212faf96e9acacdbd09febd34438f8f711fb84e09a8916013cd7815ca28d" +dependencies = [ + "anstyle", + "anstyle-parse", + "anstyle-query", + "anstyle-wincon", + "colorchoice", + "is_terminal_polyfill", + "utf8parse", +] + +[[package]] +name = "anstyle" +version = "1.0.14" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "940b3a0ca603d1eade50a4846a2afffd5ef57a9feac2c0e2ec2e14f9ead76000" + +[[package]] +name = "anstyle-parse" +version = "1.0.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "52ce7f38b242319f7cabaa6813055467063ecdc9d355bbb4ce0c68908cd8130e" +dependencies = [ + "utf8parse", +] + +[[package]] +name = "anstyle-query" +version = "1.1.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "40c48f72fd53cd289104fc64099abca73db4166ad86ea0b4341abe65af83dadc" +dependencies = [ + "windows-sys", +] + +[[package]] +name = "anstyle-wincon" +version = "3.0.11" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "291e6a250ff86cd4a820112fb8898808a366d8f9f58ce16d1f538353ad55747d" +dependencies = [ + "anstyle", + "once_cell_polyfill", + "windows-sys", +] + [[package]] name = "anyhow" version = "1.0.102" @@ -36,6 +95,35 @@ version = "1.0.4" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801" +[[package]] +name = "colorchoice" +version = "1.0.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "1d07550c9036bf2ae0c684c4297d503f838287c83c53686d05370d0e139ae570" + +[[package]] +name = "env_filter" +version = "1.0.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "32e90c2accc4b07a8456ea0debdc2e7587bdd890680d71173a15d4ae604f6eef" +dependencies = [ + "log", + "regex", +] + +[[package]] +name = "env_logger" +version = "0.11.10" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "0621c04f2196ac3f488dd583365b9c09be011a4ab8b9f37248ffcc8f6198b56a" +dependencies = [ + "anstream", + "anstyle", + "env_filter", + "jiff", + "log", +] + [[package]] name = "fallible-iterator" version = "0.3.0" @@ -78,6 +166,36 @@ dependencies = [ "hashbrown", ] +[[package]] +name = "is_terminal_polyfill" +version = "1.70.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "a6cb138bb79a146c1bd460005623e142ef0181e3d0219cb493e02f7d08a35695" + +[[package]] +name = "jiff" +version = "0.2.23" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "1a3546dc96b6d42c5f24902af9e2538e82e39ad350b0c766eb3fbf2d8f3d8359" +dependencies = [ + "jiff-static", + "log", + "portable-atomic", + "portable-atomic-util", + "serde_core", +] + +[[package]] +name = "jiff-static" +version = "0.2.23" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "2a8c8b344124222efd714b73bb41f8b5120b27a7cc1c75593a6ff768d9d05aa4" +dependencies = [ + "proc-macro2", + "quote", + "syn", +] + [[package]] name = "js-sys" version = "0.3.93" @@ -98,24 +216,66 @@ dependencies = [ "vcpkg", ] +[[package]] +name = "log" +version = "0.4.29" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "5e5032e24019045c762d3c0f28f5b6b8bbf38563a65908389bf7978758920897" + +[[package]] +name = "memchr" +version = "2.8.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "f8ca58f447f06ed17d5fc4043ce1b10dd205e060fb3ce5b979b8ed8e59ff3f79" + [[package]] name = "once_cell" version = "1.21.4" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "9f7c3e4beb33f85d45ae3e3a1792185706c8e16d043238c593331cc7cd313b50" +[[package]] +name = "once_cell_polyfill" +version = "1.70.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "384b8ab6d37215f3c5301a95a4accb5d64aa607f1fcb26a11b5303878451b4fe" + +[[package]] +name = "pin-project-lite" +version = "0.2.17" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "a89322df9ebe1c1578d689c92318e070967d1042b512afbe49518723f4e6d5cd" + [[package]] name = "pkg-config" version = "0.3.32" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "7edddbd0b52d732b21ad9a5fab5c704c14cd949e5e9a1ec5929a24fded1b904c" +[[package]] +name = "portable-atomic" +version = "1.13.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "c33a9471896f1c69cecef8d20cbe2f7accd12527ce60845ff44c153bb2a21b49" + +[[package]] +name = "portable-atomic-util" +version = "0.2.6" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "091397be61a01d4be58e7841595bd4bfedb15f1cd54977d79b8271e94ed799a3" +dependencies = [ + "portable-atomic", +] + [[package]] name = "poul-list" version = "0.1.0" dependencies = [ "anyhow", + "env_logger", + "log", "rusqlite", + "tokio", ] [[package]] @@ -136,6 +296,35 @@ dependencies = [ "proc-macro2", ] +[[package]] +name = "regex" +version = "1.12.3" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "e10754a14b9137dd7b1e3e5b0493cc9171fdd105e0ab477f51b72e7f3ac0e276" +dependencies = [ + "aho-corasick", + "memchr", + "regex-automata", + "regex-syntax", +] + +[[package]] +name = "regex-automata" +version = "0.4.14" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "6e1dd4122fc1595e8162618945476892eefca7b88c52820e74af6262213cae8f" +dependencies = [ + "aho-corasick", + "memchr", + "regex-syntax", +] + +[[package]] +name = "regex-syntax" +version = "0.8.10" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "dc897dd8d9e8bd1ed8cdad82b5966c3e0ecae09fb1907d58efaa013543185d0a" + [[package]] name = "rsqlite-vfs" version = "0.1.0" @@ -167,6 +356,26 @@ version = "1.0.22" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "b39cdef0fa800fc44525c84ccb54a029961a8215f9619753635a9c0d2538d46d" +[[package]] +name = "serde_core" +version = "1.0.228" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "41d385c7d4ca58e59fc732af25c3983b67ac852c1a25000afe1175de458b67ad" +dependencies = [ + "serde_derive", +] + +[[package]] +name = "serde_derive" +version = "1.0.228" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "d540f220d3187173da220f885ab66608367b6574e925011a9353e4badda91d79" +dependencies = [ + "proc-macro2", + "quote", + "syn", +] + [[package]] name = "shlex" version = "1.3.0" @@ -222,12 +431,39 @@ dependencies = [ "syn", ] +[[package]] +name = "tokio" +version = "1.51.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "2bd1c4c0fc4a7ab90fc15ef6daaa3ec3b893f004f915f2392557ed23237820cd" +dependencies = [ + "pin-project-lite", + "tokio-macros", +] + +[[package]] +name = "tokio-macros" +version = "2.7.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "385a6cb71ab9ab790c5fe8d67f1645e6c450a7ce006a33de03daa956cf70a496" +dependencies = [ + "proc-macro2", + "quote", + "syn", +] + [[package]] name = "unicode-ident" version = "1.0.24" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "e6e4313cd5fcd3dad5cafa179702e2b244f760991f45397d14d4ebf38247da75" +[[package]] +name = "utf8parse" +version = "0.2.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821" + [[package]] name = "vcpkg" version = "0.2.15" @@ -278,3 +514,18 @@ checksum = "c9bf0406a78f02f336bf1e451799cca198e8acde4ffa278f0fb20487b150a633" dependencies = [ "unicode-ident", ] + +[[package]] +name = "windows-link" +version = "0.2.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5" + +[[package]] +name = "windows-sys" +version = "0.61.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "ae137229bcbd6cdf0f7b80a31df61766145077ddf49416a728b02cb3921ff3fc" +dependencies = [ + "windows-link", +] diff --git a/Cargo.toml b/Cargo.toml index 3504162..c42a1ee 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -5,4 +5,7 @@ edition = "2024" [dependencies] anyhow = "1.0.102" +env_logger = "0.11.10" +log = "0.4.29" rusqlite = "0.39.0" +tokio = { version = "1.51.0", features = ["macros", "rt-multi-thread"] } diff --git a/src/main.rs b/src/main.rs index 60b75af..075dc7d 100644 --- a/src/main.rs +++ b/src/main.rs @@ -1,5 +1,6 @@ mod database; mod list; +mod smtp; fn main() { println!("Hello, world!"); diff --git a/src/smtp.rs b/src/smtp.rs new file mode 100644 index 0000000..affac8b --- /dev/null +++ b/src/smtp.rs @@ -0,0 +1,71 @@ +use std::{ + io::{BufRead, BufReader}, + net::{IpAddr, SocketAddr, TcpListener, TcpStream}, +}; + +use anyhow::Result; +use tokio::spawn; + +pub struct SmtpServer { + listener: TcpListener, + running: bool, +} + +impl SmtpServer { + pub fn new(ip: [u8; 4], port: u16) -> Result { + Ok(Self { + listener: TcpListener::bind((IpAddr::from(ip), port))?, + running: false, + }) + } + + // TODO: trap SIGINT to stop server? + pub async fn run(&mut self) -> Result<()> { + self.running = true; + while self.running { + let (stream, addr) = self.listener.accept()?; + let session = SessionHandler { + stream, + addr, + state: SessionState::default(), + }; + spawn(session.run()); + } + Ok(()) + } +} + +struct SessionHandler { + stream: TcpStream, + addr: SocketAddr, + state: SessionState, +} + +impl SessionHandler { + async fn run(mut self) -> Result<()> { + let mut r = BufReader::new(&self.stream); + let mut buffer = String::new(); + + loop { + if r.read_line(&mut buffer)? == 0 { + break; + } + + log::debug!("Received '{}' from '{}'", buffer.trim(), self.addr); + self.state.apply().await; + buffer.clear(); + } + + log::info!("Connection closed by {}", self.addr); + Ok(()) + } +} + +#[derive(Default)] +struct SessionState {} + +impl SessionState { + async fn apply(&mut self) { + todo!() + } +} -- cgit v1.3