diff --git a/.gitignore b/.gitignore index 9f9742f..84e7193 100644 --- a/.gitignore +++ b/.gitignore @@ -3,36 +3,3 @@ result result-* .pre-commit-config.yaml -# Generated by Cargo -# will have compiled files and executables -packages/alias-to-sieve/debug/ -packages/alias-to-sieve/target/ - -# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries -# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html -# Cargo.lock - -# These are backup files generated by rustfmt -**/*.rs.bk - -# MSVC Windows builds of rustc generate these, which store debugging information -*.pdb - -# RustRover -# JetBrains specific template is maintained in a separate JetBrains.gitignore that can -# be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore -# and can be added to the global gitignore or merged into this file. For a more nuclear -# option (not recommended) you can uncomment the following to ignore the entire idea folder. -packages/alias-to/sieve/.idea/ - -# Testdata with private mailadresses -packages/alias-to/sieve/testdata/mathebau.aliases -packages/alias-to-sieve/testdata/koma.aliases - -# might contain private mailadresses as well -packages/alias-to/sieve/testdata/virt_aliases - -# Added by cargo -packages/alias-to-sieve/target - -packages/alias-to-sieve/tarpaulin-report.html diff --git a/COPYING b/COPYING deleted file mode 100644 index be3f7b2..0000000 --- a/COPYING +++ /dev/null @@ -1,661 +0,0 @@ - GNU AFFERO GENERAL PUBLIC LICENSE - Version 3, 19 November 2007 - - Copyright (C) 2007 Free Software Foundation, Inc. - Everyone is permitted to copy and distribute verbatim copies - of this license document, but changing it is not allowed. - - Preamble - - The GNU Affero General Public License is a free, copyleft license for -software and other kinds of works, specifically designed to ensure -cooperation with the community in the case of network server software. - - The licenses for most software and other practical works are designed -to take away your freedom to share and change the works. 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If not, see . - -Also add information on how to contact you by electronic and paper mail. - - If your software can interact with users remotely through a computer -network, you should also make sure that it provides a way for users to -get its source. For example, if your program is a web application, its -interface could display a "Source" link that leads users to an archive -of the code. There are many ways you could offer source, and different -solutions will be better for different programs; see section 13 for the -specific requirements. - - You should also get your employer (if you work as a programmer) or school, -if any, to sign a "copyright disclaimer" for the program, if necessary. -For more information on this, and how to apply and follow the GNU AGPL, see -. diff --git a/packages/alias-to-sieve/Cargo.lock b/packages/alias-to-sieve/Cargo.lock deleted file mode 100644 index 114d415..0000000 --- a/packages/alias-to-sieve/Cargo.lock +++ /dev/null @@ -1,326 +0,0 @@ -# This file is automatically @generated by Cargo. -# It is not intended for manual editing. -version = 3 - -[[package]] -name = "alias_to_sieve" -version = "0.1.0" -dependencies = [ - "email-address-parser", - "fqdn", -] - -[[package]] -name = "block-buffer" -version = "0.10.4" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "3078c7629b62d3f0439517fa394996acacc5cbc91c5a20d8c658e77abd503a71" -dependencies = [ - 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-pub struct AliasFile { - pub content: io::Lines>, - pub default_domain: FQDN, -} - -#[derive(PartialEq, Eq, Clone)] -pub struct OrdEmailAddress(EmailAddress); - -impl PartialOrd for OrdEmailAddress { - fn partial_cmp(&self, other: &Self) -> Option { - Some(self.0.to_string().cmp(&other.0.to_string())) - } -} - -impl Ord for OrdEmailAddress { - fn cmp(&self, other: &Self) -> Ordering { - self.0.to_string().cmp(&other.0.to_string()) - } -} - -pub type AliasMap = BTreeMap>; - -/// Read a virtual alias file -/// and convert it to a map of destination addresses to a list of their final forwarding addresses. -pub fn parse_alias_to_map(alias_files: Vec) -> Result> { - // File must exist in the current path - let mut redirect_map: AliasMap = AliasMap::new(); - let mut destinations: Vec = Vec::new(); - - // Extract all pairs (destination to redirect addresses) from the alias files - for alias_file in alias_files { - for line in alias_file.content { - // Ignore comments in the alias file - let line = line?; - let line = String::from(line.split_at(line.find('#').unwrap_or(line.len())).0); - let destination = line.split_at(line.find(char::is_whitespace).unwrap_or(0)).0; - - if destination.is_empty() { - continue; - } - - let redirects: Vec = line - .split_at(line.find(char::is_whitespace).unwrap_or(0)) - .1 - .split(' ') - .filter(|address| !address.trim().to_string().replace(',', "").is_empty()) - .map(|addr| to_mailaddress(addr, &alias_file.default_domain)) - .collect::, _>>()?; - - if redirects.is_empty() { - continue; - } - destinations.push(to_mailaddress(destination, &alias_file.default_domain)?); - redirect_map.insert( - to_mailaddress(destination, &alias_file.default_domain)?, - redirects, - ); - } - } - - // Replace redirects that are again forwarded elsewhere by that. - // Break after depth max_iterations and assume infinite recursion afterwards. - let mut changed = true; - let mut iterations = 0; - let max_iterations = 100; - while changed && iterations < max_iterations { - changed = false; - iterations += 1; - let mut all_new_redirects: AliasMap = AliasMap::new(); - for destination in &destinations { - for forward_to in redirect_map.get(destination).unwrap() { - if let Some(new_redirects) = redirect_map.get(forward_to) { - changed = true; - all_new_redirects - .entry(destination.clone()) - .or_insert(redirect_map.get(destination).unwrap().clone()) - .retain(|dest| *dest != *forward_to); - all_new_redirects - .entry(destination.clone()) - .and_modify(|d| d.extend(new_redirects.iter().cloned())); - } - } - } - for (destination, new_redirect) in all_new_redirects { - *redirect_map.get_mut(&destination).unwrap() = new_redirect; - } - } - if iterations == max_iterations { - return Err(String::from("Possibly infinite recursion detected in parse_alias_map. Did not terminate after {max_iterations} rounds.").into()); - } - Ok(redirect_map) -} - -/// Create an `OrdEmailAddress` from some alias entry. -/// Return parameter for complete mail addresses and append the default domain for local parts. -fn to_mailaddress( - alias_entry: &str, - default_domain: &FQDN, -) -> Result> { - let mut addr = alias_entry.trim().to_string(); - addr = addr.replace(',', ""); - if addr.contains('@') { - return Ok(OrdEmailAddress( - EmailAddress::parse(&addr, None) - .ok_or::>(String::from("Mailaddress {addr} not parsable.").into())?, - )); - } - let unsortable_mail = EmailAddress::new(&addr, &default_domain.to_string(), None)?; - Ok(OrdEmailAddress(unsortable_mail)) -} - -// The output is wrapped in a Result to allow matching on errors. -// Returns an Iterator to the Reader of the lines of the file. -pub fn read_lines

(filename: P) -> io::Result>> -where - P: AsRef, -{ - let file = File::open(filename)?; - Ok(io::BufReader::new(file).lines()) -} - -/// Generate a Sieve script -/// from a map of destination addresses to a list of their forwarding addresses. -/// -/// Addresses are sorted according to the order on `OrdEmailAddress`. -pub fn generate_sieve_script(redirects: AliasMap) -> String { - let mut script: String = - "require [\"variables\", \"copy\", \"vnd.stalwart.expressions\", \"envelope\", \"editheader\"]; - -let \"i\" \"0\"; -while \"i < count(envelope.to)\" { - let \"redirected\" \"false\"; -" - .to_string(); - for (redirect, mut destinations) in redirects { - script += format!( - // inspired by https://github.com/stalwartlabs/mail-server/issues/916#issuecomment-2474844389 - " if eval \"eq_ignore_case(envelope.to[i], '{}')\" {{ - addheader \"Delivered-To\" \"{}\"; -{} - deleteheader :index 1 :is \"Delivered-To\" \"{}\"; - let \"redirected\" \"true\"; - }} -", - redirect.0, - redirect.0, - { - let mut subscript: String = String::new(); - destinations.sort(); - for destination in destinations.iter() { - subscript += format!(" redirect :copy \"{}\";\n", destination.0).as_str(); - } - subscript - }, - redirect.0 - ) - .as_str(); - } - script += " if eval \"!redirected\" { - let \"destination\" \"envelope.to[i]\"; - redirect :copy \"${destination}\"; - } -"; - script += " let \"i\" \"i+1\";\n"; - script += "} -discard;"; - script -} - -#[cfg(test)] -mod tests { - use super::*; - use std::str::FromStr; - - #[test] - fn recursion_detection() { - let result = parse_alias_to_map(vec![AliasFile { - content: read_lines("testdata/infiniterec.aliases").unwrap(), - default_domain: FQDN::from_str("example.com").unwrap(), - }]); - assert!(result.is_err()); - } - - #[test] - fn basic_parsing() { - let result = parse_alias_to_map(vec![AliasFile { - content: read_lines("testdata/simple.aliases").unwrap(), - default_domain: FQDN::from_str("example.com").unwrap(), - }]) - .unwrap(); - assert_eq!(result.len(), 4); - - for redirects in result.iter() { - assert_eq!(redirects.1[0].0.to_string(), "me@example.org"); - } - } -} diff --git a/packages/alias-to-sieve/src/main.rs b/packages/alias-to-sieve/src/main.rs deleted file mode 100644 index 82b2cd3..0000000 --- a/packages/alias-to-sieve/src/main.rs +++ /dev/null @@ -1,34 +0,0 @@ -use alias_to_sieve::*; -use fqdn::FQDN; -use std::env; -use std::str::FromStr; - -fn main() { - let args: Vec = env::args().collect(); - if args.len() < 2 || args.len() % 2 == 0 { - print_help(); - return; - } - - // Collect alias files and their default domains - let mut alias_files: Vec = Vec::new(); - for i in (1..args.len()).step_by(2) { - if let Ok(lines) = read_lines(&args[i]) { - alias_files.push(AliasFile { - content: lines, - default_domain: FQDN::from_str(&args[i + 1]).unwrap(), - }); - } - } - println!( - "{}", - generate_sieve_script(parse_alias_to_map(alias_files).unwrap()) - ); -} - -fn print_help() { - print!( - "Reads a virtual alias file and needs a default domain to append to local paths, e.g. - ./alias_to_sieve example.com.txt example.com" - ); -} diff --git a/packages/alias-to-sieve/testdata/simple.aliases b/packages/alias-to-sieve/testdata/simple.aliases deleted file mode 100644 index 690f620..0000000 --- a/packages/alias-to-sieve/testdata/simple.aliases +++ /dev/null @@ -1,4 +0,0 @@ -admin root -sudo root -postmaster admin -root me@example.org diff --git a/packages/alias-to-sieve/testdata/infiniterec.aliases b/packages/alias_to_sieve/testdata/infiniterec.aliases similarity index 100% rename from packages/alias-to-sieve/testdata/infiniterec.aliases rename to packages/alias_to_sieve/testdata/infiniterec.aliases diff --git a/packages/flake-module.nix b/packages/flake-module.nix index 2ffe2c2..0dc6b22 100644 --- a/packages/flake-module.nix +++ b/packages/flake-module.nix @@ -20,7 +20,7 @@ packages.alias-to-sieve = let alias-to-sieve-nix = inputs.crate2nix.tools.${system}.generatedCargoNix { name = "alias-to-sieve"; - src = ./alias-to-sieve; + src = ./alias_to_sieve; }; in (pkgs.callPackage alias-to-sieve-nix {}).rootCrate.build;