f4660639ca 2026-07-31 arcade: pub mod mail;
f4660639ca 2026-07-31 arcade: mod telegram;
f4660639ca 2026-07-31 arcade: pub mod utils;
f4660639ca 2026-07-31 arcade:
f4660639ca 2026-07-31 arcade: // As we are not actually exporting this lib there would be no local Error's for
f4660639ca 2026-07-31 arcade: // now, everything will be just .stack()?'ed and propagated like in real bin
f4660639ca 2026-07-31 arcade: // The lib here is just to separate all tests from main code into tests/
f4660639ca 2026-07-31 arcade:
f4660639ca 2026-07-31 arcade: use crate::mail::MailServer;
f4660639ca 2026-07-31 arcade:
f4660639ca 2026-07-31 arcade: use std::{
f4660639ca 2026-07-31 arcade: io::Cursor,
f4660639ca 2026-07-31 arcade: os::unix::fs::PermissionsExt,
f4660639ca 2026-07-31 arcade: path::Path,
f4660639ca 2026-07-31 arcade: };
f4660639ca 2026-07-31 arcade:
f4660639ca 2026-07-31 arcade: use just_getopt::{
f4660639ca 2026-07-31 arcade: OptFlags,
f4660639ca 2026-07-31 arcade: OptSpecs,
f4660639ca 2026-07-31 arcade: OptValue,
f4660639ca 2026-07-31 arcade: };
f4660639ca 2026-07-31 arcade: use smol::{
f4660639ca 2026-07-31 arcade: fs::metadata,
f4660639ca 2026-07-31 arcade: };
f4660639ca 2026-07-31 arcade: use stacked_errors::{
f4660639ca 2026-07-31 arcade: Result,
f4660639ca 2026-07-31 arcade: StackableErr,
f4660639ca 2026-07-31 arcade: bail,
f4660639ca 2026-07-31 arcade: };
f4660639ca 2026-07-31 arcade:
f4660639ca 2026-07-31 arcade: /// Actual main function running async with Error propagation support
f4660639ca 2026-07-31 arcade: pub async fn async_main () -> Result<()> {
f4660639ca 2026-07-31 arcade: let specs = OptSpecs::new()
f4660639ca 2026-07-31 arcade: .option("help", "h", OptValue::None)
f4660639ca 2026-07-31 arcade: .option("help", "help", OptValue::None)
f4660639ca 2026-07-31 arcade: .option("config", "c", OptValue::Required)
f4660639ca 2026-07-31 arcade: .option("config", "config", OptValue::Required)
f4660639ca 2026-07-31 arcade: .flag(OptFlags::OptionsEverywhere);
f4660639ca 2026-07-31 arcade: let mut args = std::env::args();
f4660639ca 2026-07-31 arcade: args.next();
f4660639ca 2026-07-31 arcade: let parsed = specs.getopt(args);
f4660639ca 2026-07-31 arcade: for u in &parsed.unknown {
f4660639ca 2026-07-31 arcade: println!("Unknown option: {u}");
f4660639ca 2026-07-31 arcade: }
f4660639ca 2026-07-31 arcade: if !(parsed.unknown.is_empty()) || parsed.options_first("help").is_some() {
f4660639ca 2026-07-31 arcade: println!("SMTP2TG v{}, (C) 2024 - 2026\n\n\
f4660639ca 2026-07-31 arcade: \t-h|--help\tDisplay this help\n\
f4660639ca 2026-07-31 arcade: \t-c|--config …\tSet configuration file location.",
f4660639ca 2026-07-31 arcade: env!("CARGO_PKG_VERSION"));
f4660639ca 2026-07-31 arcade: return Ok(());
f4660639ca 2026-07-31 arcade: };
f4660639ca 2026-07-31 arcade: let config_file = Path::new(if let Some(path) = parsed.options_value_last("config") {
f4660639ca 2026-07-31 arcade: &path[..]
f4660639ca 2026-07-31 arcade: } else {
f4660639ca 2026-07-31 arcade: "smtp2tg.toml"
f4660639ca 2026-07-31 arcade: });
f4660639ca 2026-07-31 arcade: if !config_file.exists() {
f4660639ca 2026-07-31 arcade: bail!("can't read configuration from {config_file:?}");
f4660639ca 2026-07-31 arcade: };
f4660639ca 2026-07-31 arcade: {
f4660639ca 2026-07-31 arcade: let meta = metadata(config_file).await.stack()?;
f4660639ca 2026-07-31 arcade: if (!0o100600 & meta.permissions().mode()) > 0 {
f4660639ca 2026-07-31 arcade: bail!("other users can read or write config file {config_file:?}\n\
f4660639ca 2026-07-31 arcade: File permissions: {:o}", meta.permissions().mode());
f4660639ca 2026-07-31 arcade: }
f4660639ca 2026-07-31 arcade: }
f4660639ca 2026-07-31 arcade: let settings: config::Config = config::Config::builder()
f4660639ca 2026-07-31 arcade: .set_default("api_gateway", "https://api.telegram.org").stack()?
f4660639ca 2026-07-31 arcade: .set_default("fields", vec!["date", "from", "subject"]).stack()?
f4660639ca 2026-07-31 arcade: .set_default("hostname", "smtp.2.tg").stack()?
f4660639ca 2026-07-31 arcade: .set_default("listen_on", "0.0.0.0:1025").stack()?
f4660639ca 2026-07-31 arcade: .set_default("unknown", "relay").stack()?
f4660639ca 2026-07-31 arcade: .set_default("domains", vec!["localhost",
f4660639ca 2026-07-31 arcade: hostname::get().expect("Failed to get current hostname")
f4660639ca 2026-07-31 arcade: .to_str().expect("Can't convert hostname to string, bad UTF-8?")]).stack()?
f4660639ca 2026-07-31 arcade: .add_source(config::File::from(config_file))
f4660639ca 2026-07-31 arcade: .build()
f4660639ca 2026-07-31 arcade: .with_context(|| format!("[{config_file:?}] there was an error reading config\n\
f4660639ca 2026-07-31 arcade: \tplease consult \"smtp2tg.toml.example\" for details"))?;
f4660639ca 2026-07-31 arcade:
f4660639ca 2026-07-31 arcade: let listen_on = settings.get_string("listen_on").stack()?;
f4660639ca 2026-07-31 arcade: let server_name = settings.get_string("hostname").stack()?;
f4660639ca 2026-07-31 arcade: let core = MailServer::new(settings)?;
f4660639ca 2026-07-31 arcade: let mut server = mailin_embedded::Server::new(core);
f4660639ca 2026-07-31 arcade:
f4660639ca 2026-07-31 arcade: server.with_name(server_name)
f4660639ca 2026-07-31 arcade: .with_ssl(mailin_embedded::SslConfig::None).unwrap()
f4660639ca 2026-07-31 arcade: .with_addr(listen_on).unwrap();
f4660639ca 2026-07-31 arcade: server.serve().unwrap();
f4660639ca 2026-07-31 arcade:
f4660639ca 2026-07-31 arcade: Ok(())
f4660639ca 2026-07-31 arcade: }