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//! Simple SMTP-to-Telegram gateway. Can parse email and send them as telegram
//! messages to specified chats, generally you specify which email address is
//! available in configuration, everything else is sent to default address.
use anyhow::{
anyhow,
bail,
Result,
};
use async_std::{
io::Error,
task,
};
use just_getopt::{
OptFlags,
OptSpecs,
OptValueType,
};
use mailin_embedded::{
Response,
response::*,
};
use teloxide::{
Bot,
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use std::{
borrow::Cow,
collections::{
HashMap,
HashSet,
},
path::Path,
vec::Vec,
};
/// `SomeHeaders` object to store data through SMTP session
#[derive(Clone, Debug)]
struct SomeHeaders {
from: String,
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self.headers = None;
result
}
}
#[async_std::main]
async fn main() -> Result<()> {
let specs = OptSpecs::new()
.option("help", "h", OptValueType::None)
.option("help", "help", OptValueType::None)
.option("config", "c", OptValueType::Required)
.option("config", "config", OptValueType::Required)
.flag(OptFlags::OptionsEverywhere);
let mut args = std::env::args();
args.next();
let parsed = specs.getopt(args);
for u in &parsed.unknown {
println!("Unknown option: {}", u);
}
if !(parsed.unknown.is_empty()) || parsed.options_first("help").is_some() {
println!("SMTP2TG v{}, (C) 2024 - 2025\n\n\
\t-h|--help\tDisplay this help\n\
\t-c|-config …\tSet configuration file location.",
env!("CARGO_PKG_VERSION"));
return Ok(());
};
let config_file = Path::new(if let Some(path) = parsed.options_value_last("config") {
&path[..]
} else {
"smtp2tg.toml"
});
if !config_file.exists() {
eprintln!("Error: can't read configuration from {:?}", config_file);
std::process::exit(1);
};
let settings: config::Config = config::Config::builder()
.set_default("fields", vec!["date", "from", "subject"]).unwrap()
.set_default("hostname", "smtp.2.tg").unwrap()
.set_default("listen_on", "0.0.0.0:1025").unwrap()
.set_default("unknown", "relay").unwrap()
.add_source(config::File::with_name("smtp2tg.toml"))
.add_source(config::File::from(config_file))
.build()
.expect("[smtp2tg.toml] there was an error reading config\n\
\tplease consult \"smtp2tg.toml.example\" for details");
.expect(&format!("[{:?}] there was an error reading config\n\
\tplease consult \"smtp2tg.toml.example\" for details",
config_file)[..]);
let listen_on = settings.get_string("listen_on")?;
let server_name = settings.get_string("hostname")?;
let core = TelegramTransport::new(settings);
let mut server = mailin_embedded::Server::new(core);
server.with_name(server_name)
.with_ssl(mailin_embedded::SslConfig::None).unwrap()
.with_addr(listen_on).unwrap();
server.serve().unwrap();
Ok(())
}
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