Lines of src/lib.rs from check-in 713c1e7fb2 that are changed by the sequence of edits moving toward check-in 512369f93e:

                         1: pub mod mail;
                         2: mod telegram;
                         3: pub mod utils;
713c1e7fb2 2026-07-31    4: 
713c1e7fb2 2026-07-31    5: // As we are not actually exporting this lib there would be no local Error's for
713c1e7fb2 2026-07-31    6: // now, everything will be just .stack()?'ed and propagated like in real bin
713c1e7fb2 2026-07-31    7: // The lib here is just to separate all tests from main code into tests/
                         8: 
                         9: use crate::mail::MailServer;
                        10: 
                        11: use std::{
                        12: 	io::Cursor,
                        13: 	os::unix::fs::PermissionsExt,
                        14: 	path::Path,
                        15: };
                        16: 
713c1e7fb2 2026-07-31   17: use just_getopt::{
713c1e7fb2 2026-07-31   18: 	OptFlags,
713c1e7fb2 2026-07-31   19: 	OptSpecs,
713c1e7fb2 2026-07-31   20: 	OptValue,
713c1e7fb2 2026-07-31   21: };
                        22: use smol::{
                        23: 	fs::metadata,
                        24: };
                        25: use stacked_errors::{
                        26: 	Result,
                        27: 	StackableErr,
                        28: 	bail,
                        29: };
                        30: 
713c1e7fb2 2026-07-31   31: /// Actual main function running async with Error propagation support
                        32: pub async fn async_main () -> Result<()> {
713c1e7fb2 2026-07-31   33: 	let specs = OptSpecs::new()
713c1e7fb2 2026-07-31   34: 		.option("help", "h", OptValue::None)
713c1e7fb2 2026-07-31   35: 		.option("help", "help", OptValue::None)
713c1e7fb2 2026-07-31   36: 		.option("config", "c", OptValue::Required)
713c1e7fb2 2026-07-31   37: 		.option("config", "config", OptValue::Required)
713c1e7fb2 2026-07-31   38: 		.flag(OptFlags::OptionsEverywhere);
713c1e7fb2 2026-07-31   39: 	let mut args = std::env::args();
713c1e7fb2 2026-07-31   40: 	args.next();
713c1e7fb2 2026-07-31   41: 	let parsed = specs.getopt(args);
713c1e7fb2 2026-07-31   42: 	for u in &parsed.unknown {
713c1e7fb2 2026-07-31   43: 		println!("Unknown option: {u}");
713c1e7fb2 2026-07-31   44: 	}
713c1e7fb2 2026-07-31   45: 	if !(parsed.unknown.is_empty()) || parsed.options_first("help").is_some() {
713c1e7fb2 2026-07-31   46: 		println!("SMTP2TG v{}, (C) 2024 - 2026\n\n\
713c1e7fb2 2026-07-31   47: 			\t-h|--help\tDisplay this help\n\
713c1e7fb2 2026-07-31   48: 			\t-c|--config …\tSet configuration file location.",
713c1e7fb2 2026-07-31   49: 			env!("CARGO_PKG_VERSION"));
713c1e7fb2 2026-07-31   50: 		return Ok(());
713c1e7fb2 2026-07-31   51: 	};
713c1e7fb2 2026-07-31   52: 	let config_file = Path::new(if let Some(path) = parsed.options_value_last("config") {
713c1e7fb2 2026-07-31   53: 		&path[..]
713c1e7fb2 2026-07-31   54: 	} else {
713c1e7fb2 2026-07-31   55: 		"smtp2tg.toml"
713c1e7fb2 2026-07-31   56: 	});
                        57: 	if !config_file.exists() {
                        58: 		bail!("can't read configuration from {config_file:?}");
                        59: 	};
                        60: 	{
                        61: 		let meta = metadata(config_file).await.stack()?;
                        62: 		if (!0o100600 & meta.permissions().mode()) > 0 {
                        63: 			bail!("other users can read or write config file {config_file:?}\n\
                        64: 				File permissions: {:o}", meta.permissions().mode());
                        65: 		}
                        66: 	}
                        67: 	let settings: config::Config = config::Config::builder()
                        68: 		.set_default("api_gateway", "https://api.telegram.org").stack()?
                        69: 		.set_default("fields", vec!["date", "from", "subject"]).stack()?
                        70: 		.set_default("hostname", "smtp.2.tg").stack()?
                        71: 		.set_default("listen_on", "0.0.0.0:1025").stack()?
                        72: 		.set_default("unknown", "relay").stack()?
                        73: 		.set_default("domains", vec!["localhost",
                        74: 			hostname::get().expect("Failed to get current hostname")
                        75: 			.to_str().expect("Can't convert hostname to string, bad UTF-8?")]).stack()?
                        76: 		.add_source(config::File::from(config_file))
                        77: 		.build()
                        78: 		.with_context(|| format!("[{config_file:?}] there was an error reading config\n\
                        79: 			\tplease consult \"smtp2tg.toml.example\" for details"))?;
                        80: 
                        81: 	let listen_on = settings.get_string("listen_on").stack()?;
                        82: 	let server_name = settings.get_string("hostname").stack()?;
                        83: 	let core = MailServer::new(settings)?;
                        84: 	let mut server = mailin_embedded::Server::new(core);
                        85: 
                        86: 	server.with_name(server_name)
                        87: 		.with_ssl(mailin_embedded::SslConfig::None).unwrap()
                        88: 		.with_addr(listen_on).unwrap();
                        89: 	server.serve().unwrap();
                        90: 
                        91: 	Ok(())
                        92: }