Lines of src/main.rs from check-in a044f68fa7 that are changed by the sequence of edits moving toward check-in 072229b5bf:

                         1: //! Simple SMTP-to-Telegram gateway. Can parse email and send them as telegram
                         2: //! messages to specified chats, generally you specify which email address is
                         3: //! available in configuration, everything else is sent to default address.
                         4: 
                         5: mod mail;
                         6: mod telegram;
                         7: mod utils;
                         8: 
                         9: #[cfg(test)]
                        10: mod tests;
                        11: 
                        12: use crate::mail::MailServer;
                        13: 
a044f68fa7 2025-08-23   14: use async_std::fs::metadata;
                        15: use just_getopt::{
                        16: 	OptFlags,
                        17: 	OptSpecs,
                        18: 	OptValue,
                        19: };
                        20: use stacked_errors::{
                        21: 	Result,
                        22: 	StackableErr,
                        23: 	bail,
                        24: };
                        25: 
                        26: use std::{
                        27: 	io::Cursor,
                        28: 	os::unix::fs::PermissionsExt,
                        29: 	path::Path,
                        30: };
                        31: 
a044f68fa7 2025-08-23   32: #[async_std::main]
a044f68fa7 2025-08-23   33: async fn main () -> Result<()> {
a044f68fa7 2025-08-23   34: 	let specs = OptSpecs::new()
a044f68fa7 2025-08-23   35: 		.option("help", "h", OptValue::None)
a044f68fa7 2025-08-23   36: 		.option("help", "help", OptValue::None)
a044f68fa7 2025-08-23   37: 		.option("config", "c", OptValue::Required)
a044f68fa7 2025-08-23   38: 		.option("config", "config", OptValue::Required)
a044f68fa7 2025-08-23   39: 		.flag(OptFlags::OptionsEverywhere);
a044f68fa7 2025-08-23   40: 	let mut args = std::env::args();
a044f68fa7 2025-08-23   41: 	args.next();
a044f68fa7 2025-08-23   42: 	let parsed = specs.getopt(args);
a044f68fa7 2025-08-23   43: 	for u in &parsed.unknown {
a044f68fa7 2025-08-23   44: 		println!("Unknown option: {u}");
a044f68fa7 2025-08-23   45: 	}
a044f68fa7 2025-08-23   46: 	if !(parsed.unknown.is_empty()) || parsed.options_first("help").is_some() {
a044f68fa7 2025-08-23   47: 		println!("SMTP2TG v{}, (C) 2024 - 2025\n\n\
a044f68fa7 2025-08-23   48: 			\t-h|--help\tDisplay this help\n\
a044f68fa7 2025-08-23   49: 			\t-c|--config …\tSet configuration file location.",
a044f68fa7 2025-08-23   50: 			env!("CARGO_PKG_VERSION"));
a044f68fa7 2025-08-23   51: 		return Ok(());
a044f68fa7 2025-08-23   52: 	};
a044f68fa7 2025-08-23   53: 	let config_file = Path::new(if let Some(path) = parsed.options_value_last("config") {
a044f68fa7 2025-08-23   54: 		&path[..]
a044f68fa7 2025-08-23   55: 	} else {
a044f68fa7 2025-08-23   56: 		"smtp2tg.toml"
a044f68fa7 2025-08-23   57: 	});
a044f68fa7 2025-08-23   58: 	if !config_file.exists() {
a044f68fa7 2025-08-23   59: 		bail!("can't read configuration from {config_file:?}");
a044f68fa7 2025-08-23   60: 	};
a044f68fa7 2025-08-23   61: 	{
a044f68fa7 2025-08-23   62: 		let meta = metadata(config_file).await.stack()?;
a044f68fa7 2025-08-23   63: 		if (!0o100600 & meta.permissions().mode()) > 0 {
a044f68fa7 2025-08-23   64: 			bail!("other users can read or write config file {config_file:?}\n\
a044f68fa7 2025-08-23   65: 				File permissions: {:o}", meta.permissions().mode());
a044f68fa7 2025-08-23   66: 		}
a044f68fa7 2025-08-23   67: 	}
a044f68fa7 2025-08-23   68: 	let settings: config::Config = config::Config::builder()
a044f68fa7 2025-08-23   69: 		.set_default("fields", vec!["date", "from", "subject"]).stack()?
a044f68fa7 2025-08-23   70: 		.set_default("hostname", "smtp.2.tg").stack()?
a044f68fa7 2025-08-23   71: 		.set_default("listen_on", "0.0.0.0:1025").stack()?
a044f68fa7 2025-08-23   72: 		.set_default("unknown", "relay").stack()?
a044f68fa7 2025-08-23   73: 		.set_default("domains", vec!["localhost", hostname::get().stack()?.to_str().expect("Failed to get current hostname")]).stack()?
a044f68fa7 2025-08-23   74: 		.add_source(config::File::from(config_file))
a044f68fa7 2025-08-23   75: 		.build()
a044f68fa7 2025-08-23   76: 		.with_context(|| format!("[{config_file:?}] there was an error reading config\n\
a044f68fa7 2025-08-23   77: 			\tplease consult \"smtp2tg.toml.example\" for details"))?;
a044f68fa7 2025-08-23   78: 
a044f68fa7 2025-08-23   79: 	let listen_on = settings.get_string("listen_on").stack()?;
a044f68fa7 2025-08-23   80: 	let server_name = settings.get_string("hostname").stack()?;
a044f68fa7 2025-08-23   81: 	let core = MailServer::new(settings)?;
a044f68fa7 2025-08-23   82: 	let mut server = mailin_embedded::Server::new(core);
a044f68fa7 2025-08-23   83: 
a044f68fa7 2025-08-23   84: 	server.with_name(server_name)
a044f68fa7 2025-08-23   85: 		.with_ssl(mailin_embedded::SslConfig::None).unwrap()
a044f68fa7 2025-08-23   86: 		.with_addr(listen_on).unwrap();
a044f68fa7 2025-08-23   87: 	server.serve().unwrap();
a044f68fa7 2025-08-23   88: 
a044f68fa7 2025-08-23   89: 	Ok(())
                        90: }