3c858ed7c4 2026-07-31 arcade: mod mail;
3c858ed7c4 2026-07-31 arcade: mod telegram;
3c858ed7c4 2026-07-31 arcade: pub mod utils;
3c858ed7c4 2026-07-31 arcade:
3c858ed7c4 2026-07-31 arcade: use crate::mail::MailServer;
3c858ed7c4 2026-07-31 arcade:
3c858ed7c4 2026-07-31 arcade: use just_getopt::{
3c858ed7c4 2026-07-31 arcade: OptFlags,
3c858ed7c4 2026-07-31 arcade: OptSpecs,
3c858ed7c4 2026-07-31 arcade: OptValue,
3c858ed7c4 2026-07-31 arcade: };
3c858ed7c4 2026-07-31 arcade: use smol::{
3c858ed7c4 2026-07-31 arcade: fs::metadata,
3c858ed7c4 2026-07-31 arcade: };
3c858ed7c4 2026-07-31 arcade: use stacked_errors::{
3c858ed7c4 2026-07-31 arcade: Result,
3c858ed7c4 2026-07-31 arcade: StackableErr,
3c858ed7c4 2026-07-31 arcade: bail,
3c858ed7c4 2026-07-31 arcade: };
3c858ed7c4 2026-07-31 arcade:
3c858ed7c4 2026-07-31 arcade: use std::{
3c858ed7c4 2026-07-31 arcade: io::Cursor,
3c858ed7c4 2026-07-31 arcade: os::unix::fs::PermissionsExt,
3c858ed7c4 2026-07-31 arcade: path::Path,
3c858ed7c4 2026-07-31 arcade: };
3c858ed7c4 2026-07-31 arcade:
3c858ed7c4 2026-07-31 arcade: /// Actual main function running async with Error propagation support
3c858ed7c4 2026-07-31 arcade: pub async fn async_main () -> Result<()> {
3c858ed7c4 2026-07-31 arcade: let specs = OptSpecs::new()
3c858ed7c4 2026-07-31 arcade: .option("help", "h", OptValue::None)
3c858ed7c4 2026-07-31 arcade: .option("help", "help", OptValue::None)
3c858ed7c4 2026-07-31 arcade: .option("config", "c", OptValue::Required)
3c858ed7c4 2026-07-31 arcade: .option("config", "config", OptValue::Required)
3c858ed7c4 2026-07-31 arcade: .flag(OptFlags::OptionsEverywhere);
3c858ed7c4 2026-07-31 arcade: let mut args = std::env::args();
3c858ed7c4 2026-07-31 arcade: args.next();
3c858ed7c4 2026-07-31 arcade: let parsed = specs.getopt(args);
3c858ed7c4 2026-07-31 arcade: for u in &parsed.unknown {
3c858ed7c4 2026-07-31 arcade: println!("Unknown option: {u}");
3c858ed7c4 2026-07-31 arcade: }
3c858ed7c4 2026-07-31 arcade: if !(parsed.unknown.is_empty()) || parsed.options_first("help").is_some() {
3c858ed7c4 2026-07-31 arcade: println!("SMTP2TG v{}, (C) 2024 - 2026\n\n\
3c858ed7c4 2026-07-31 arcade: \t-h|--help\tDisplay this help\n\
3c858ed7c4 2026-07-31 arcade: \t-c|--config …\tSet configuration file location.",
3c858ed7c4 2026-07-31 arcade: env!("CARGO_PKG_VERSION"));
3c858ed7c4 2026-07-31 arcade: return Ok(());
3c858ed7c4 2026-07-31 arcade: };
3c858ed7c4 2026-07-31 arcade: let config_file = Path::new(if let Some(path) = parsed.options_value_last("config") {
3c858ed7c4 2026-07-31 arcade: &path[..]
3c858ed7c4 2026-07-31 arcade: } else {
3c858ed7c4 2026-07-31 arcade: "smtp2tg.toml"
3c858ed7c4 2026-07-31 arcade: });
3c858ed7c4 2026-07-31 arcade: if !config_file.exists() {
3c858ed7c4 2026-07-31 arcade: bail!("can't read configuration from {config_file:?}");
3c858ed7c4 2026-07-31 arcade: };
3c858ed7c4 2026-07-31 arcade: {
3c858ed7c4 2026-07-31 arcade: let meta = metadata(config_file).await.stack()?;
3c858ed7c4 2026-07-31 arcade: if (!0o100600 & meta.permissions().mode()) > 0 {
3c858ed7c4 2026-07-31 arcade: bail!("other users can read or write config file {config_file:?}\n\
3c858ed7c4 2026-07-31 arcade: File permissions: {:o}", meta.permissions().mode());
3c858ed7c4 2026-07-31 arcade: }
3c858ed7c4 2026-07-31 arcade: }
3c858ed7c4 2026-07-31 arcade: let settings: config::Config = config::Config::builder()
3c858ed7c4 2026-07-31 arcade: .set_default("api_gateway", "https://api.telegram.org").stack()?
3c858ed7c4 2026-07-31 arcade: .set_default("fields", vec!["date", "from", "subject"]).stack()?
3c858ed7c4 2026-07-31 arcade: .set_default("hostname", "smtp.2.tg").stack()?
3c858ed7c4 2026-07-31 arcade: .set_default("listen_on", "0.0.0.0:1025").stack()?
3c858ed7c4 2026-07-31 arcade: .set_default("unknown", "relay").stack()?
3c858ed7c4 2026-07-31 arcade: .set_default("domains", vec!["localhost", hostname::get().stack()?.to_str().expect("Failed to get current hostname")]).stack()?
3c858ed7c4 2026-07-31 arcade: .add_source(config::File::from(config_file))
3c858ed7c4 2026-07-31 arcade: .build()
3c858ed7c4 2026-07-31 arcade: .with_context(|| format!("[{config_file:?}] there was an error reading config\n\
3c858ed7c4 2026-07-31 arcade: \tplease consult \"smtp2tg.toml.example\" for details"))?;
3c858ed7c4 2026-07-31 arcade:
3c858ed7c4 2026-07-31 arcade: let listen_on = settings.get_string("listen_on").stack()?;
3c858ed7c4 2026-07-31 arcade: let server_name = settings.get_string("hostname").stack()?;
3c858ed7c4 2026-07-31 arcade: let core = MailServer::new(settings)?;
3c858ed7c4 2026-07-31 arcade: let mut server = mailin_embedded::Server::new(core);
3c858ed7c4 2026-07-31 arcade:
3c858ed7c4 2026-07-31 arcade: server.with_name(server_name)
3c858ed7c4 2026-07-31 arcade: .with_ssl(mailin_embedded::SslConfig::None).unwrap()
3c858ed7c4 2026-07-31 arcade: .with_addr(listen_on).unwrap();
3c858ed7c4 2026-07-31 arcade: server.serve().unwrap();
3c858ed7c4 2026-07-31 arcade:
3c858ed7c4 2026-07-31 arcade: Ok(())
3c858ed7c4 2026-07-31 arcade: }