"event-listener-strategy",
 "futures-core",
 "pin-project-lite",
]

[[package]]
name = "async-compat"
version = "0.2.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a1ba85bc55464dcbf728b56d97e119d673f4cf9062be330a9a26f3acf504a590"
dependencies = [
 "futures-core",
 "futures-io",
 "once_cell",
 "pin-project-lite",
 "tokio",
]

checksum = "5a8d4d2746f89841e49230dd26917df1876050f95abafafbe34f47cb534b88d7"
dependencies = [
 "byteorder",
]

[[package]]
name = "bitflags"
version = "2.13.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b588b76d00fde79687d7646a9b5bdf3cc0f655e0bbd080335a95d7e96f3587da"

[[package]]
name = "blocking"
version = "1.7.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a70e4329df6cb94385eed412ec92375c3cdd8a6e502493d1229b6414e4036dfa"
dependencies = [

name = "bytes"
version = "1.12.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "fc652a48c352aef3ea3aed32080501cf3ef6ed5da78602a020c991775b0aff04"

[[package]]
name = "cc"
version = "1.4.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "005ec2760ca554fae18df7a11195552ec576cd665632a881bc011d5bb2fd4d80"
dependencies = [
 "find-msvc-tools",
 "jobserver",
 "libc",
 "shlex",
]

[[package]]
name = "cfg-if"
version = "1.0.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"

[[package]]
name = "cfg_aliases"
version = "0.2.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f079e83a288787bcd14a6aea84cee5c87a67c5a3e660c30f557a3d24761b3527"

[[package]]
name = "chacha20"
version = "0.10.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "65c35e4b699c7e15ccbe7ee35c005e4fc0a278d22238a2857e6ce2dadeda1b06"
dependencies = [
 "cfg-if",
 "cpufeatures",
 "rand_core",
]

[[package]]
name = "clap"
version = "4.6.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "473c7e07f409a8d772161724aa8db6a765a2532a70f9667eeb7b49d3d02fbdca"
dependencies = [
 "clap_builder",
 "clap_derive",
]

[[package]]
name = "clap_builder"
version = "4.6.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7b48fea5a88e9ae728a2dcbedbfc0e730f7d60da42e1cb049a83c9fb8b789889"
dependencies = [
 "anstream",
 "anstyle",
 "clap_lex",
 "strsim",
]

[[package]]
name = "clap_derive"
version = "4.6.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d012d2b9d65aca7f18f4d9878a045bc17899bba951561ba5ec3c2ba1eed9a061"
dependencies = [
 "heck",
 "proc-macro2",
 "quote",
 "syn 3.0.5",
]

[[package]]
name = "clap_lex"
version = "1.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c8d4a3bb8b1e0c1050499d1815f5ab16d04f0959b233085fb31653fbfc9d98f9"

[[package]]
name = "cmake"
version = "0.1.58"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c0f78a02292a74a88ac736019ab962ece0bc380e3f977bf72e376c5d78ff0678"
dependencies = [

checksum = "4ca0197aee26d1ae37445ee532fefce43251d24cc7c166799f4d46817f1d3973"
dependencies = [
 "crossbeam-utils",
]

[[package]]
name = "config"
version = "0.15.25"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b85f248a4de22d204ceabc6299d89d2c70fbd7f09fea53c06c852369652d8139"
dependencies = [
 "pathdiff",
 "serde_core",
 "toml",
 "winnow",
]

source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6837e2cf7485aaae18f86181d2f0e9a7ed297a025e220aeabf63fdebd3a2ddff"
dependencies = [
 "ident_case",
 "proc-macro2",
 "quote",
 "strsim",
 "syn 3.0.5",
]

[[package]]
name = "darling_macro"
version = "0.24.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2ac7135c3ef02b2f7833bbeb1be5ba7f966dcde8a87c6b87f65a778d71a02785"
dependencies = [
 "darling_core",
 "quote",
 "syn 3.0.5",
]

[[package]]
name = "derive_more"
version = "2.1.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d751e9e49156b02b44f9c1815bcb94b984cdcc4396ecc32521c739452808b134"

name = "displaydoc"
version = "0.2.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c6232dd377dcc64799954cbd3a9bb882e9cdc1308ccd87b1c098f1fb2eaf82a8"
dependencies = [
 "proc-macro2",
 "quote",
 "syn 3.0.5",
]

[[package]]
name = "dunce"
version = "1.0.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "92773504d58c093f6de2459af4af33faa518c13451eb8f2b5698ed3d36e7c813"

name = "fastrand"
version = "2.5.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "da7c62ceae207dd37ea5b845da6a0696c799f85e97da1ab5b7910be3c1c80223"

[[package]]
name = "find-msvc-tools"
version = "0.1.12"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3e0f1c7c3a72c66fd80abe965175f7523475c0489a87d3ff9d6e8c87d87a9d2d"

[[package]]
name = "form_urlencoded"
version = "1.2.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "cb4cb245038516f5f85277875cdaa4f7d2c9a0fa0468de06ed190163b1581fcf"
dependencies = [

name = "futures-macro"
version = "0.3.34"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9fb9654ba8355388abeb8dcb4fc62f511300867002afc858860463bdd9fe0c44"
dependencies = [
 "proc-macro2",
 "quote",
 "syn 3.0.5",
]

[[package]]
name = "futures-sink"
version = "0.3.34"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1944426bf7d03f1d14f708785e4b33efd750b36d48a157b836b3efc15ede8e1d"

 "smallvec",
 "tokio",
 "want",
]

[[package]]
name = "hyper-rustls"
version = "0.27.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "33ca68d021ef39cf6463ab54c1d0f5daf03377b70561305bb89a8f83aab66e0f"
dependencies = [
 "http",
 "hyper",
 "hyper-util",
 "rustls",
 "tokio",
 "tokio-rustls",

name = "log"
version = "0.4.34"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f9f8bd3e56ce4dfc153cf470fffbfa98c7620958b312ca5c3a4b8d5181fd13c6"

[[package]]
name = "lru-slab"
version = "0.1.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "112b39cec0b298b6c1999fee3e31427f74f676e4cb9879ed1a121b43661a4154"

[[package]]
name = "mail-parser"
version = "0.11.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0b3a9080c1fb8190e232df37a10aa1b3d6b08be084e537069913f025e0ce86c5"
dependencies = [
 "hashify",
]

[[package]]
name = "mailin"
version = "0.6.5"

checksum = "985e7ec9bb745e6ce6535b544d84d6cd6f7ad8bd711c398938ae983b91a766d9"
dependencies = [
 "unicode-ident",
]

[[package]]
name = "quinn"
version = "0.11.11"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0c1a41e437b6bbd489372cd4971de128e85c855f56c57f283d20ff016cf7c0a8"
dependencies = [
 "bytes",
 "cfg_aliases",
 "pin-project-lite",
 "quinn-proto",
 "quinn-udp",
 "rustc-hash",
 "rustls",
 "socket2",
 "thiserror",
 "tokio",
 "tracing",
 "web-time",
]

[[package]]
name = "quinn-proto"
version = "0.11.17"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "04759210543be93709136e28212294a659ef5001836ff4eab4d663e4529bba83"
dependencies = [
 "aws-lc-rs",
 "bytes",
 "getrandom 0.4.3",
 "lru-slab",
 "rand",
 "rand_pcg",

name = "r-efi"
version = "6.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"

[[package]]
name = "rand"
version = "0.10.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c7f5fa3a058cd35567ef9bfa5e75732bee0f9e4c55fa90477bef2dfcdbc4be80"
dependencies = [
 "chacha20",
 "getrandom 0.4.3",
 "rand_core",
]

[[package]]

checksum = "cfcb3a22ef46e85b45de6ee7e79d063319ebb6594faafcf1c225ea92ab6e9b92"
dependencies = [
 "semver",
]

[[package]]
name = "rustix"
version = "1.1.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b6fe4565b9518b83ef4f91bb47ce29620ca828bd32cb7e408f0062e9930ba190"
dependencies = [
 "bitflags",
 "errno",
 "libc",
 "linux-raw-sys",
 "windows-sys 0.61.2",
]

[[package]]
name = "rustls"
version = "0.23.44"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6725596c3f2c3a0aef021139e145d4eafe314a6623e4680ca83852b2c67ab2ba"
dependencies = [
 "aws-lc-rs",
 "log",
 "once_cell",
 "rustls-pki-types",
 "rustls-webpki",
 "subtle",

name = "serde_derive"
version = "1.0.229"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e7a5d71263a5a7d47b41f6b3f06ba276f10cc18b0931f1799f710578e2309348"
dependencies = [
 "proc-macro2",
 "quote",
 "syn 3.0.5",
]

[[package]]
name = "serde_json"
version = "1.0.151"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c841b55ecdae098c80dcae9cf767f6f8a0c2cdb3416bbef72181df4d0fe73f14"

version = "3.23.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1d607aa01a3cb0ad757d6fd216136910db3c97b102fe686585689615a02dbcdc"
dependencies = [
 "darling",
 "proc-macro2",
 "quote",
 "syn 3.0.5",
]

[[package]]
name = "shellwords"
version = "1.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "89e515aa4699a88148ed5ef96413ceef0048ce95b43fbc955a33bde0a70fcae6"

name = "smallbox"
version = "0.8.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "aca054fd9f8c2ebe8557a2433f307e038c0716124efd045daa0388afa5172189"

[[package]]
name = "smallvec"
version = "1.16.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b9be42f50aa861c555654aa3a37f52f4b1074bacf4e48fe0ef7fa584e80f1f0f"

[[package]]
name = "smol"
version = "2.0.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a33bd3e260892199c3ccfc487c88b2da2265080acb316cd920da72fdfd7c599f"
dependencies = [
 "async-channel",
 "async-executor",
 "async-fs",
 "async-io",
 "async-lock",
 "async-net",
 "async-process",
 "blocking",
 "futures-lite",
]














[[package]]
name = "smtp2tg"
version = "0.6.8"
dependencies = [
 "async-compat",
 "clap",
 "config",
 "hostname",
 "html-escape",
 "mail-parser",
 "mailin-embedded",
 "regex",
 "smol",

 "stacked_errors",
 "tgbot",
]

[[package]]
name = "socket2"
version = "0.6.5"

 "proc-macro2",
 "quote",
 "unicode-ident",
]

[[package]]
name = "syn"
version = "3.0.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "12df2e0110f65b775f769bb17ef989067a1d931b2eb822bd4346631eeada89f9"
dependencies = [
 "proc-macro2",
 "quote",
 "unicode-ident",
]

[[package]]
name = "sync_wrapper"
version = "1.0.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0bf256ce5efdfa370213c1dabab5935a12e49f2c58d15e9eac2870d3b4f27263"
dependencies = [
 "futures-core",
]

[[package]]
name = "synstructure"
version = "0.13.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "728a70f3dbaf5bab7f0c4b1ac8d7ae5ea60a4b5549c8a5914361c99147a709d2"
dependencies = [
 "proc-macro2",
 "quote",
 "syn 2.0.119",
]

[[package]]
name = "ternop"
version = "1.0.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9d4ae32d0a4605a89c28534371b056919c12e7a070ee07505af75130ff030111"

 "tokio",
 "tokio-util",
 "zmij",
]

[[package]]
name = "thin-vec"
version = "0.2.19"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "79def32ffcd477db1ff26f76dab9e3a91f0bd42a85ca96577089b24623056f9d"

[[package]]
name = "thiserror"
version = "2.0.20"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ec86235f5fcc2a73650310756d2ac5b138a5780bbbdfae3eeccec992c435ba4f"
dependencies = [
 "thiserror-impl",
]

[[package]]
name = "thiserror-impl"
version = "2.0.20"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bc04cd3e1236dd4a98afca4569f2deb3f120e5422a4023be2cb683f8486292af"
dependencies = [
 "proc-macro2",
 "quote",
 "syn 3.0.5",
]

[[package]]
name = "tinystr"
version = "0.8.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b1e27c91459209c2986af3dcf603a5a74a4368754ce37414f59acc971167f643"
dependencies = [
 "displaydoc",
 "zerovec",
]

[[package]]
name = "tinyvec"
version = "1.13.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "4cf0ded5c4e56918d8f8a339e1bb67d038d3bc6d144ac407904015ba2e4cde9b"
dependencies = [
 "tinyvec_macros",
]

[[package]]
name = "tinyvec_macros"
version = "0.1.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"

[[package]]
name = "tokio"
version = "1.53.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "202caea871b69668250d242070849eb495be178ed697a3e98aebce5bc81a0bed"
dependencies = [

 "libc",
 "pin-project-lite",
 "tokio",
]

[[package]]
name = "toml"
version = "1.1.5+spec-1.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "12c0ba9680044b4ce98d391a62094047eada0d64860b80166c39f4a6b5640785"
dependencies = [
 "serde_core",
 "serde_spanned",
 "toml_datetime",
 "toml_parser",
 "winnow",
]

name = "unicase"
version = "2.9.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "dbc4bc3a9f746d862c45cb89d705aa10f187bb96c76001afab07a0d35ce60142"

[[package]]
name = "unicode-ident"
version = "1.0.24"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e6e4313cd5fcd3dad5cafa179702e2b244f760991f45397d14d4ebf38247da75"

[[package]]
name = "untrusted"
version = "0.9.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"

version = "0.2.128"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "411e4887f0071ef2d2164a9d5fdf2d20efbef78fccd3a78b0c10a1dc5295e48a"
dependencies = [
 "bumpalo",
 "proc-macro2",
 "quote",
 "syn 3.0.5",
 "wasm-bindgen-shared",
]

[[package]]
name = "wasm-bindgen-shared"
version = "0.2.128"
source = "registry+https://github.com/rust-lang/crates.io-index"

 "stable_deref_trait",
 "yoke-derive",
 "zerofrom",
]

[[package]]
name = "yoke-derive"
version = "0.8.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "de844c262c8848816172cef550288e7dc6c7b7814b4ee56b3e1553f275f1858e"
dependencies = [
 "proc-macro2",
 "quote",
 "syn 2.0.119",
 "synstructure",
]

[[package]]
name = "zerofrom"
version = "0.1.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0ec05a11813ea801ff6d75110ad09cd0824ddba17dfe17128ea0d5f68e6c5272"
dependencies = [
 "zerofrom-derive",
]

[[package]]
name = "zerofrom-derive"
version = "0.1.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "11532158c46691caf0f2593ea8358fed6bbf68a0315e80aae9bd41fbade684a1"
dependencies = [
 "proc-macro2",
 "quote",
 "syn 2.0.119",
 "synstructure",
]

[[package]]
name = "zeroize"
version = "1.9.0"
source = "registry+https://github.com/rust-lang/crates.io-index"

name = "zerovec-derive"
version = "0.11.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "34df6fc39dbd26ddc9c10e6a2984476e13acce22e64e4487636ef494369225da"
dependencies = [
 "proc-macro2",
 "quote",
 "syn 3.0.5",
]

[[package]]
name = "zmij"
version = "1.0.23"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "29666d0abbfad1e3dc4dcf6144730dd3a3ab225bbbdac83319345b1b44ccfc1b"

[package]
name = "smtp2tg"
version = "0.6.8"
authors = [ "arcade@b1t.name" ]
edition = "2024"
license = "0BSD"
repository = "http://fs.b1t.name/smtp2tg"

[dependencies]
async-compat = "0.2.5"
config = { version = "0.15", default-features = false, features = [ "toml" ] }
hostname = "0.4.1"
html-escape = "0.2.13"
clap = { version = "4.6", features = [ "derive" ] }
mail-parser = "0.11"
mailin-embedded = "0.8"
regex = "1.11.1"
smol = "2.0.2"

stacked_errors = "0.8"
tgbot = "0.48"

# All tests are moved to tests/
[lib]
test = false

[[bin]]
test = false
name = "smtp2tg"

//! SMTP-to-Telegram gateway main library.
//!
//! This module provides the core functionality for receiving emails via SMTP
//! and forwarding them to Telegram chats.
//!
//! As we are not actually exporting this lib there would be no local Error's
//! for now, everything will be just .stack()?'ed and propagated like in real
//! bin The lib here is just to separate all tests from main code into tests/

pub mod mail;
mod telegram;
pub mod utils;

use crate::mail::MailServer;

use std::{
	io::Cursor,
	os::unix::fs::PermissionsExt,
	path::Path,
};

use clap::Parser;
use smol::{
	fs::metadata,
};
use stacked_errors::{
	Result,
	StackableErr,
	bail,
};

/// SMTP-to-Telegram gateway
#[derive(Parser, Debug)]
#[command(name = "smtp2tg")]
#[command(about = format!("SMTP-to-Telegram gateway v{}, (C) 2024 - 2026", env!("CARGO_PKG_VERSION")), long_about = None)]
struct Args {
	/// Set configuration file location
	#[arg(short, long, default_value = "smtp2tg.toml")]
	config: String,
}

/// Main asynchronous entry point for the application. Runs the gateway using
/// the configuration selected on the command line.
///
/// The configuration file must use owner-only permissions. Once configured,
/// the SMTP server runs until it stops or encounters an error.
///
/// # Errors
/// Returns an error if the configuration file is missing, inaccessible,
/// insecure, malformed, or contains invalid required settings.
///
/// # Panics
/// Panics if configuring or serving the SMTP server fails.
pub async fn async_main () -> Result<()> {
	let args = Args::parse();
	let config_file = Path::new(&args.config);
	if !config_file.try_exists().stack()? {
		bail!("Configuration file not found: {config_file:?}\n\
			Hint: Ensure the file exists and the path is correct.");
	};
	{
		let meta = metadata(config_file).await.stack()?;
		if (!0o100600 & meta.permissions().mode()) > 0 {
			bail!("Configuration file permissions are insecure {config_file:?}\n\
				Current permissions: {:o}\n\
				Required: 0600 (owner read/write only).\n\
				Fix with: chmod 600 {config_file:?}",
				meta.permissions().mode());
	}	}
	let settings: config::Config = config::Config::builder()
		.set_default("api_gateway", "https://api.telegram.org").stack()?
		.set_default("fields", vec!["date", "from", "subject"]).stack()?
		.set_default("hostname", "smtp.2.tg").stack()?
		.set_default("listen_on", "0.0.0.0:1025").stack()?
		.set_default("domains", vec!["localhost",
			hostname::get().context("Failed to get current hostname")?
			.to_str().context("Can't convert hostname to string, bad UTF-8?")?]).stack()?
		.add_source(config::File::from(config_file))
		.build()
		.with_context(|| format!(
			"Failed to parse configuration file: {config_file:?}\n\
			Check syntax against smtp2tg.toml.example.\n\
			Common issues: missing quotes, trailing commas in inline tables, or invalid types."
		))?;

	let listen_on = settings.get_string("listen_on").stack()?;
	let server_name = settings.get_string("hostname").stack()?;
	let core = MailServer::new(settings)?;
	let mut server = mailin_embedded::Server::new(core);

	// TODO: remove unwraps when mailin-embedded bumps with better error handling
	server.with_name(server_name)
		.with_ssl(mailin_embedded::SslConfig::None).unwrap()
		.with_addr(listen_on).unwrap();
	server.serve().unwrap();

	Ok(())
}

//! 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 async_compat::Compat;









use stacked_errors:: Result;






// main function stub that executes main code from lib























fn main () -> Result<()> {

	smol::block_on(Compat::new(async {

























		smtp2tg::async_main().await

	}))
}