From d843c08425d0619a7bfa939dbbaf72af867b4b38 Mon Sep 17 00:00:00 2001 From: malte Date: Thu, 6 Nov 2025 11:38:20 +0100 Subject: [PATCH] Initial commit - rough filestructure - first simplistic daemon --- .gitignore | 1 + Cargo.lock | 1065 +++++++++++++++++++++++++++++++++++++ Cargo.toml | 21 + config/config.toml | 5 + config/log4rs.yml | 16 + src/config.rs | 42 ++ src/daemon/mod.rs | 173 ++++++ src/main.rs | 41 ++ src/types/husk_context.rs | 24 + src/types/mod.rs | 1 + 10 files changed, 1389 insertions(+) create mode 100644 .gitignore create mode 100644 Cargo.lock create mode 100644 Cargo.toml create mode 100644 config/config.toml create mode 100644 config/log4rs.yml create mode 100644 src/config.rs create mode 100644 src/daemon/mod.rs create mode 100644 src/main.rs create mode 100644 src/types/husk_context.rs create mode 100644 src/types/mod.rs diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..ea8c4bf --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +/target diff 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"./config/log4rs.yml" diff --git a/config/log4rs.yml b/config/log4rs.yml new file mode 100644 index 0000000..9f614a4 --- /dev/null +++ b/config/log4rs.yml @@ -0,0 +1,16 @@ +appenders: + stdout_appender: + kind: console + encoder: + pattern: "{h({d(%Y-%m-%d %H:%M:%S)(utc)} - {l}: {m}{n})}" + + file_appender: + kind: file + path: "/tmp/husk.log" + encoder: + pattern: "{h({d(%Y-%m-%d %H:%M:%S)(utc)} - {l}: {m}{n})}" + +root: + level: debug + appenders: + - file_appender diff --git a/src/config.rs b/src/config.rs new file mode 100644 index 0000000..428e704 --- /dev/null +++ b/src/config.rs @@ -0,0 +1,42 @@ +// +// Parsing the config file +// + +use std::fs; +use serde_derive::Deserialize; + +#[derive(Deserialize, Debug)] +pub struct HuskConfig { + logfile_config: Option, +} + +impl HuskConfig { + + pub fn load(path: &String) -> Option { + match fs::read_to_string(path) { + Ok(data) => { + match toml::from_str(data.as_str()) { + Ok(configuration) => Some(configuration), + Err(e) => { + eprintln!("Error while parsing config file: {:?}", e); + None + } + } + }, + Err(e) => { + eprintln!("Error while reading config file: {:?}", e); + None + } + } + } + + pub fn logfile_config(&self) -> String { + match &self.logfile_config { + Some(c) => c.clone(), + None => { + eprintln!("Using logging configuration from 'log4rs.yml'"); + "log4rs.yml".to_string() + }, + } + } +} diff --git a/src/daemon/mod.rs b/src/daemon/mod.rs new file mode 100644 index 0000000..a00909d --- /dev/null +++ b/src/daemon/mod.rs @@ -0,0 +1,173 @@ +// +// Husk milter +// +// the actual daemon +// + +use bytes::Bytes; +use std::ffi::CString; +use tokio::signal; +use tokio::net::TcpListener; + +use indymilter::{ + Actions, + Callbacks, + Context, + EomContext, + Macros, + NegotiateContext, + ProtoOpts, + SocketInfo, + Status, + Config, + ContextActions, +}; + +use crate::types::husk_context::HuskContext; + +pub struct Daemon { } + +impl Daemon { + + pub async fn run() -> Result<(), ()> { + + let listener = TcpListener::bind("localhost:3000") + .await + .expect(" opening milter socket"); + + let callbacks = Callbacks::new() + .on_negotiate(|cx, actions, opts| Box::pin(Self::handle_negotiate(cx, actions, opts))) + .on_connect(|cx, hostname, socket_info| Box::pin(Self::handle_connect(cx, hostname, socket_info))) + .on_helo(|cx, hostname| Box::pin(Self::handle_helo(cx, hostname))) + .on_mail(|cx, args| Box::pin(Self::handle_mail(cx, args))) + .on_rcpt(|cx, args| Box::pin(Self::handle_rcpt(cx, args))) + .on_data(|cx| Box::pin(Self::handle_data(cx))) + .on_header(|cx, name, value| Box::pin(Self::handle_header(cx, name, value))) + .on_eoh(|cx| Box::pin(Self::handle_eoh(cx))) + .on_body(|cx, chunk| Box::pin(Self::handle_body(cx, chunk))) + .on_eom(|cx| Box::pin(Self::handle_eom(cx))) + .on_abort(|cx| Box::pin(Self::handle_abort(cx))) + .on_close(|cx| Box::pin(Self::handle_close(cx))) + .on_unknown(|cx, arg| Box::pin(Self::handle_unknown(cx, arg))); + + let config = Default::default(); + + indymilter::run(listener, callbacks, config, signal::ctrl_c()) + .await + .expect("milter execution failed"); + + Ok(()) + } + + async fn handle_negotiate( + _cx: &mut NegotiateContext, + actions: Actions, + opts: ProtoOpts, + ) -> Status { + log::debug!("NEGOTIATE: actions: {actions:?} - opts: {opts:?}"); + + Status::AllOpts + } + + async fn handle_connect( + _cx: &mut Context, + hostname: CString, + socket_info: SocketInfo, + ) -> Status { + log::debug!("CONNECT: hostname: {hostname:?} - socket_info: {socket_info:?}"); + //Self::print_macros(&cx.macros); + + Status::Continue + } + + async fn handle_helo(_cx: &mut Context, hostname: CString) -> Status { + log::debug!("HELO: hostname: {hostname:?}"); + + Status::Continue + } + + async fn handle_mail(cx: &mut Context, args: Vec) -> Status { + log::debug!("MAIL: {args:?}"); + + let sender = match args.first() { + Some(cs) => { + match cs.to_str() { + Ok(s) => s.to_string(), + _ => "corrupt".to_string() + } + }, + None => { "missing".to_string() } + }; + + // setup Context + if let Some(mut context) = HuskContext::new() { + context.set_sender(sender); + cx.data = Some(context).take(); + } + + Status::Continue + } + + async fn handle_rcpt(_cx: &mut Context, args: Vec) -> Status { + log::debug!("RCPT: {args:?}"); + + Status::Continue + } + + async fn handle_data(_cx: &mut Context) -> Status { + log::debug!("DATA"); + + Status::Continue + } + + async fn handle_header(_cx: &mut Context, name: CString, value: CString) -> Status { + log::debug!("HEADER: {name:?} = {value:?}"); + + Status::Continue + } + + async fn handle_eoh(_cx: &mut Context) -> Status { + log::debug!("EOH"); + + Status::Continue + } + + async fn handle_body(_cx: &mut Context, chunk: Bytes) -> Status { + log::debug!("BODY: chunk with {:?} bytes received", &chunk.len()); + + Status::Continue + } + + async fn handle_eom(cx: &mut EomContext) -> Status { + log::debug!("EOM"); + + if let Some(ref mut context_data) = cx.data { + log::debug!("Mail from {:?} complete", context_data.sender); + } + + Status::Continue + } + + async fn handle_abort(_cx: &mut Context) -> Status { + log::debug!("ABORT"); + + Status::Continue + } + + async fn handle_close(_cx: &mut Context) -> Status { + log::debug!("CLOSE"); + + Status::Continue + } + + async fn handle_unknown(_cx: &mut Context, arg: CString) -> Status { + log::debug!("UNKNOWN: {arg:?}"); + + Status::Continue + } + + fn print_macros(macros: &Macros) { + println!(" macros: {:?}", macros.to_hash_map()); + } + +} diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..794da84 --- /dev/null +++ b/src/main.rs @@ -0,0 +1,41 @@ +// +// Husk milter +// + +use std::{ + env, + process, +}; + +pub mod config; +use config::HuskConfig; +pub mod types; + +pub mod daemon; +use daemon::Daemon; + +#[tokio::main] +async fn main() { + + let config_file = env::args().nth(1).expect("config file missing"); + let husk_config = HuskConfig::load(&config_file); + + if husk_config.is_none() { + eprintln!("Cannot load configuration"); + process::exit(1); + } + let husk_config = husk_config.unwrap(); + + log4rs::init_file(husk_config.logfile_config(), Default::default()).unwrap(); + + log::info!("starting..."); + + match Daemon::run().await { + Ok(_) => { + println!("exiting..."); + }, + Err(e) => { + println!("exit with {:?}", e); + } + } +} diff --git a/src/types/husk_context.rs b/src/types/husk_context.rs new file mode 100644 index 0000000..542d1f0 --- /dev/null +++ b/src/types/husk_context.rs @@ -0,0 +1,24 @@ +// +// Husk milter +// +// Context +// + +pub struct HuskContext { + pub sender: Option, +} + +impl HuskContext { + + /// Create a new HuskContext instance + pub fn new() -> Option { + Some(HuskContext { + sender: None + }) + } + + pub fn set_sender(&mut self, sender: String) { + self.sender = Some(sender); + } + +} diff --git a/src/types/mod.rs b/src/types/mod.rs new file mode 100644 index 0000000..d827538 --- /dev/null +++ b/src/types/mod.rs @@ -0,0 +1 @@ +pub mod husk_context;