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Author SHA1 Message Date
Ian 5c50344062 Rotate the service log daily with tracing-appender 2026-10-22 14:37:48 -04:00
Ian 9c85bd84e5 Free the parsed security descriptor on drop instead of through a closure 2026-10-22 14:17:11 -04:00
Ian 78172519f0 Use schannel for the root store 2026-10-22 14:03:26 -04:00
Ian 902afd031d Explain the data folder ACL and the root store arguments 2026-10-22 13:52:02 -04:00
Ian Graham Martinez 19d29f1ea6 Screen redirected registry traffic in a Windows service
Each registry host gets its own loopback address, where a LocalSystem
service serves mitm_service, connecting upstream through a resolver that
ignores the hosts file. It trusts its CA machine-wide and serves the empty
CRL that schannel needs.

The service writes the hosts-file block once it listens. Pausing it removes
the block and continuing rewrites it; a stop, crash or shutdown leaves it,
so a restart fails closed and picks up a changed host list.
2026-10-22 11:48:15 -04:00
27 changed files with 87 additions and 966 deletions

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+1 -168
View File
@@ -261,15 +261,6 @@ dependencies = [
"hybrid-array",
]
[[package]]
name = "block2"
version = "0.6.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "cdeb9d870516001442e364c5220d3574d2da8dc765554b4a617230d33fa58ef5"
dependencies = [
"objc2",
]
[[package]]
name = "borsh"
version = "1.8.1"
@@ -678,16 +669,6 @@ dependencies = [
"windows-sys 0.61.2",
]
[[package]]
name = "dispatch2"
version = "0.3.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1e0e367e4e7da84520dedcac1901e4da967309406d1e51017ae1abfb97adbd38"
dependencies = [
"bitflags 2.13.2",
"objc2",
]
[[package]]
name = "displaydoc"
version = "0.2.7"
@@ -699,12 +680,6 @@ dependencies = [
"syn 3.0.6",
]
[[package]]
name = "dpi"
version = "0.1.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d8b14ccef22fc6f5a8f4d7d768562a182c04ce9a3b3157b91390b52ddfdf1a76"
[[package]]
name = "either"
version = "1.18.0"
@@ -776,15 +751,6 @@ dependencies = [
"getrandom 0.4.3",
]
[[package]]
name = "fdeflate"
version = "0.3.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1e6853b52649d4ac5c0bd02320cddc5ba956bdb407c4b75a2c6b75bf51500f8c"
dependencies = [
"simd-adler32",
]
[[package]]
name = "find-msvc-tools"
version = "0.1.13"
@@ -805,7 +771,7 @@ checksum = "6e634e2e0ebac1ee034020da1ca582e17ffe4e0f5e985823721e168928136dcb"
dependencies = [
"crc32fast",
"libz-sys",
"miniz_oxide 0.9.1",
"miniz_oxide",
"zlib-rs",
]
@@ -1486,16 +1452,6 @@ dependencies = [
"wasm-bindgen",
]
[[package]]
name = "keyboard-types"
version = "0.8.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0fbe853b403ae61a04233030ae8a79d94975281ed9770a1f9e246732b534b28d"
dependencies = [
"bitflags 2.13.2",
"serde",
]
[[package]]
name = "konst"
version = "0.2.20"
@@ -1639,16 +1595,6 @@ version = "0.2.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
[[package]]
name = "miniz_oxide"
version = "0.8.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1fa76a2c86f704bdb222d66965fb3d63269ce38518b83cb0575fca855ebb6316"
dependencies = [
"adler2",
"simd-adler32",
]
[[package]]
name = "miniz_oxide"
version = "0.9.1"
@@ -1690,24 +1636,6 @@ dependencies = [
"uuid",
]
[[package]]
name = "muda"
version = "0.21.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "4340e89c178916e62879c5c36b7f699019369be413e496178a6983ce91b8bc03"
dependencies = [
"crossbeam-channel",
"dpi",
"keyboard-types",
"objc2",
"objc2-app-kit",
"objc2-core-foundation",
"objc2-foundation",
"png",
"thiserror",
"windows-sys 0.61.2",
]
[[package]]
name = "multer"
version = "3.1.0"
@@ -1814,66 +1742,6 @@ dependencies = [
"autocfg",
]
[[package]]
name = "objc2"
version = "0.6.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "08849bbd4767dfae9457696856ae1c84fe4e0281bbe4a7abff2d0e06fb7981f8"
dependencies = [
"objc2-encode",
]
[[package]]
name = "objc2-app-kit"
version = "0.3.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d49e936b501e5c5bf01fda3a9452ff86dc3ea98ad5f283e1455153142d97518c"
dependencies = [
"bitflags 2.13.2",
"objc2",
"objc2-core-foundation",
"objc2-foundation",
]
[[package]]
name = "objc2-core-foundation"
version = "0.3.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2a180dd8642fa45cdb7dd721cd4c11b1cadd4929ce112ebd8b9f5803cc79d536"
dependencies = [
"bitflags 2.13.2",
"dispatch2",
"objc2",
]
[[package]]
name = "objc2-core-graphics"
version = "0.3.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e022c9d066895efa1345f8e33e584b9f958da2fd4cd116792e15e07e4720a807"
dependencies = [
"bitflags 2.13.2",
"objc2-core-foundation",
]
[[package]]
name = "objc2-encode"
version = "4.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ef25abbcd74fb2609453eb695bd2f860d389e457f67dc17cafc8b8cbc89d0c33"
[[package]]
name = "objc2-foundation"
version = "0.3.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e3e0adef53c21f888deb4fa59fc59f7eb17404926ee8a6f59f5df0fd7f9f3272"
dependencies = [
"bitflags 2.13.2",
"block2",
"objc2",
"objc2-core-foundation",
]
[[package]]
name = "oid-registry"
version = "0.8.1"
@@ -1996,19 +1864,6 @@ version = "0.3.34"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f6b464fbc74e149a392436b17d523f769e057cb6877f6a5c4618bc6f11800548"
[[package]]
name = "png"
version = "0.18.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "60769b8b31b2a9f263dae2776c37b1b28ae246943cf719eb6946a1db05128a61"
dependencies = [
"bitflags 2.13.2",
"crc32fast",
"fdeflate",
"flate2",
"miniz_oxide 0.8.9",
]
[[package]]
name = "portable-atomic"
version = "1.15.0"
@@ -3375,9 +3230,7 @@ dependencies = [
"clap",
"core-foundation 0.10.1",
"directories",
"muda",
"percent-encoding",
"png",
"rama",
"rand",
"rcgen",
@@ -3393,7 +3246,6 @@ dependencies = [
"tracing",
"tracing-appender",
"tracing-subscriber",
"tray-icon",
"which",
"windows",
"windows-registry",
@@ -3800,25 +3652,6 @@ dependencies = [
"tracing-serde",
]
[[package]]
name = "tray-icon"
version = "0.26.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "4f5cc5858ecf9574ddd8f0032a2ff7ffd6f7724d2b81e48b9374984b3fd6ddc9"
dependencies = [
"crossbeam-channel",
"muda",
"objc2",
"objc2-app-kit",
"objc2-core-foundation",
"objc2-core-graphics",
"objc2-foundation",
"once_cell",
"png",
"thiserror",
"windows-sys 0.61.2",
]
[[package]]
name = "try-lock"
version = "0.2.5"
+11 -21
View File
@@ -3,7 +3,6 @@ name = "strix-firewall"
version = "0.1.0"
edition = "2021"
license = "Apache-2.0"
authors = ["Strix"]
description = "Screens package downloads for known malware before they reach your machine"
repository = "https://github.com/usestrix/firewall"
homepage = "https://github.com/usestrix/firewall"
@@ -11,20 +10,14 @@ homepage = "https://github.com/usestrix/firewall"
# as an integration test; new tests/*.rs need an explicit [[test]] entry.
autotests = false
# Only Windows ships the service and tray.
# Only Windows ships the service.
[package.metadata.dist.binaries]
x86_64-pc-windows-msvc = ["firewall", "firewall-service", "firewall-tray"]
x86_64-pc-windows-msvc = ["firewall", "firewall-service"]
aarch64-apple-darwin = ["firewall"]
x86_64-apple-darwin = ["firewall"]
aarch64-unknown-linux-gnu = ["firewall"]
x86_64-unknown-linux-gnu = ["firewall"]
[package.metadata.wix]
upgrade-guid = "D944C2F6-BF55-4B21-A60E-1BBDB1A66293"
path-guid = "033B1050-23D0-4F5A-A0D3-F4757B4B67E0"
license = false
eula = false
[lib]
name = "firewall"
# The macOS extension links a staticlib, built on demand:
@@ -39,14 +32,6 @@ path = "src/main.rs"
name = "firewall-service"
path = "src/bin/firewall-service.rs"
[[bin]]
name = "firewall-tray"
path = "src/bin/firewall-tray.rs"
[[bin]]
name = "firewall-uninstall"
path = "src/bin/firewall-uninstall.rs"
[[example]]
name = "proxy-test"
path = "tests/proxy-test/main.rs"
@@ -111,14 +96,19 @@ security-framework = "3.7.0"
security-framework-sys = "2.17.0"
[target.'cfg(windows)'.dependencies]
muda = { version = "0.21.2", default-features = false }
png = "0.18.1"
rama = { version = "0.4.0", features = ["dns-hickory"] }
schannel = "0.1.29"
tokio = { version = "1.53.1", features = ["net"] }
tracing-appender = "0.2.5"
tray-icon = { version = "0.26.1", default-features = false }
windows = { version = "0.62", features = ["Win32_Foundation", "Win32_Security", "Win32_Security_Authorization", "Win32_Security_Cryptography", "Win32_System_Com", "Win32_System_Environment", "Win32_System_Threading", "Win32_UI_Shell", "Win32_UI_WindowsAndMessaging"] }
windows = { version = "0.62", features = [
"Win32_Foundation",
"Win32_Security",
"Win32_Security_Authorization",
"Win32_Security_Cryptography",
"Win32_System_Com",
"Win32_System_Environment",
"Win32_UI_Shell",
] }
windows-registry = "0.6.1"
windows-service = "0.8.0"
+5 -9
View File
@@ -89,16 +89,12 @@ async fn handle(req: Request, firewall: &Firewall) -> Result<Response, Infallibl
}
info!(method = %req.method(), %url, "forwarding");
// Only an HTTPS registry was downgraded to reach us, so only it is upgraded back and rewritten.
let tls = firewall.is_https_url(&url);
let index = tls && firewall.is_index_url(&url);
let index = firewall.is_index_url(&url);
let (mut parts, body) = req.into_parts();
if tls {
let Ok(uri) = url.parse() else {
return Ok(text(400, "firewall: expected an absolute URL\n"));
};
parts.uri = uri;
}
let Ok(uri) = url.parse() else {
return Ok(text(400, "firewall: expected an absolute URL\n"));
};
parts.uri = uri;
let client = DecompressionLayer::new().into_layer(EasyHttpWebClient::default());
let response = match client.serve(Request::from_parts(parts, body)).await {
+5 -16
View File
@@ -2,25 +2,14 @@
#[cfg(windows)]
fn main() {
// Run by the MSI as it removes the firewall.
if std::env::args().nth(1).as_deref() == Some("uninstall") {
firewall::init_logging("info");
if let Err(e) = firewall::os::windows::uninstall() {
fail("uninstall", &format!("could not uninstall: {e}"))
}
} else if let Err(e) = firewall::os::windows::run_service() {
fail("service", &format!("could not run the service: {e}"))
if let Err(e) = firewall::os::windows::run_service() {
tracing::error!("could not run the service: {e}");
firewall::telemetry::error("service");
firewall::telemetry::flush();
std::process::exit(1)
}
}
#[cfg(windows)]
fn fail(kind: &'static str, message: &str) -> ! {
tracing::error!("{message}");
firewall::telemetry::error(kind);
firewall::telemetry::flush();
std::process::exit(1)
}
/// The service is Windows-only.
#[cfg(not(windows))]
fn main() {}
-11
View File
@@ -1,11 +0,0 @@
//! The notification-area icon, started at sign-in. A GUI app, so no console opens with it.
#![windows_subsystem = "windows"]
#[cfg(windows)]
fn main() -> Result<(), rama::error::BoxError> {
firewall::os::windows::run_tray()
}
/// The tray is Windows-only.
#[cfg(not(windows))]
fn main() {}
-16
View File
@@ -1,16 +0,0 @@
//! Run as root by the macOS app's uninstall.
#[cfg(target_os = "macos")]
fn main() {
firewall::init_logging("info");
if let Err(e) = firewall::os::macos::uninstall() {
tracing::error!("could not uninstall: {e}");
firewall::telemetry::error("uninstall");
firewall::telemetry::flush();
std::process::exit(1)
}
}
/// Only macOS installs anything system-wide.
#[cfg(not(target_os = "macos"))]
fn main() {}
+23 -53
View File
@@ -1,11 +1,9 @@
use crate::policies::registries::{host_of, BUILT_IN};
use crate::policies::registries::{Registry, BUILT_IN};
use directories::ProjectDirs;
use rama::net::uri::Uri;
use serde::Deserialize;
use serde_json::{Map, Value};
use std::collections::HashMap;
use std::io::{Error, ErrorKind};
use std::num::{NonZeroU16, NonZeroU64};
use std::path::PathBuf;
pub const DEFAULT_PORT: u16 = 8080;
@@ -13,7 +11,7 @@ pub const DEFAULT_PORT: u16 = 8080;
#[derive(Debug, Deserialize)]
#[serde(default, deny_unknown_fields)]
pub struct FirewallConfig {
pub port: NonZeroU16,
pub port: u16,
/// Allow a package when a filter could not check it.
pub fail_open: bool,
/// 0 turns the age check off.
@@ -22,8 +20,9 @@ pub struct FirewallConfig {
/// Packages never screened, by ecosystem: `{"npm": [{"name": "left-pad"}]}`.
pub allow: HashMap<String, Vec<AllowedPackage>>,
pub telemetry: bool,
/// Mirrors laid out like a built-in registry, by its name: `{"npm": ["https://npm.example.com/"]}`.
pub registries: HashMap<String, Vec<String>>,
/// Not describable in the file yet, so this is always the built-in table.
#[serde(skip)]
pub registries: Vec<&'static Registry>,
}
#[derive(Debug, Deserialize)]
@@ -41,19 +40,19 @@ pub struct DenylistSource {
pub base: String,
/// Polled for a new commit, which re-fetches every list in use.
pub revision: String,
pub poll_secs: NonZeroU64,
pub poll_secs: u64,
}
impl Default for FirewallConfig {
fn default() -> Self {
FirewallConfig {
port: NonZeroU16::new(DEFAULT_PORT).unwrap(),
port: DEFAULT_PORT,
fail_open: true,
min_age_hours: 0,
denylist: DenylistSource::default(),
allow: HashMap::new(),
telemetry: true,
registries: HashMap::new(),
registries: BUILT_IN.to_vec(),
}
}
}
@@ -64,7 +63,7 @@ impl Default for DenylistSource {
base: "https://raw.githubusercontent.com/usestrix/firewall-blocklist/main".into(),
revision: "https://api.github.com/repos/usestrix/firewall-blocklist/commits/main"
.into(),
poll_secs: NonZeroU64::new(10).unwrap(),
poll_secs: 10,
}
}
}
@@ -88,8 +87,7 @@ impl FirewallConfig {
};
let invalid = |e| Error::new(ErrorKind::InvalidData, format!("{}: {e}", path.display()));
let layer: Value = serde_json::from_str(&text).map_err(invalid)?;
let config = FirewallConfig::deserialize(&layer).map_err(invalid)?;
check(&config).map_err(|e| Error::new(ErrorKind::InvalidData, format!("{}: {e}", path.display())))?;
FirewallConfig::deserialize(&layer).map_err(invalid)?;
let Value::Object(layer) = layer else {
unreachable!("a config parses only from an object");
};
@@ -99,7 +97,19 @@ impl FirewallConfig {
}
pub fn local_url(&self, path: &str) -> String {
crate::local_url(self.port.get(), path)
crate::local_url(self.port, path)
}
/// Without building a `Firewall`, which needs a runtime.
pub fn hosts(&self) -> Vec<&'static str> {
let mut hosts: Vec<&'static str> = Vec::new();
for registry in &self.registries {
let host = registry.host();
if !hosts.contains(&host) {
hosts.push(host);
}
}
hosts
}
}
@@ -119,43 +129,3 @@ fn merge(base: &mut Map<String, Value>, top: Map<String, Value>) {
}
}
}
/// What serde's types cannot say.
fn check(config: &FirewallConfig) -> Result<(), String> {
// `Duration::hours` panics past this.
if config.min_age_hours > time::Duration::MAX.whole_hours() as u64 {
return Err(format!("{} hours is too long", config.min_age_hours));
}
for eco in config.allow.keys() {
if !BUILT_IN.iter().any(|r| r.eco == eco) {
return Err(format!("unknown ecosystem {eco:?} in allow"));
}
}
for url in [&config.denylist.base, &config.denylist.revision] {
if parse_url(url, &["http", "https"]).is_none() {
return Err(format!("{url:?} is not an http(s) URL"));
}
}
for (name, mirrors) in &config.registries {
if !BUILT_IN.iter().any(|r| r.name() == name) {
return Err(format!("no built-in registry is named {name}"));
}
if let Some(url) = mirrors.iter().find(|url| !is_mirror(url)) {
return Err(format!("{url}: a mirror is an https:// URL ending in /"));
}
}
Ok(())
}
/// No port or userinfo, as `host_of` is what gets intercepted.
fn is_mirror(url: &str) -> bool {
let Some(uri) = parse_url(url, &["https"]) else { return false };
let bare_host = uri.host_str().is_some_and(|host| host == host_of(url));
bare_host && uri.query().is_none() && uri.fragment().is_none() && url.ends_with('/')
}
fn parse_url(url: &str, schemes: &[&str]) -> Option<Uri> {
let uri = Uri::parse(url).ok()?;
let has_host = uri.host_str().is_some_and(|host| !host.is_empty());
(has_host && schemes.contains(&uri.scheme_str()?)).then_some(uri)
}
+6 -32
View File
@@ -9,7 +9,6 @@ use std::collections::HashMap;
pub struct Firewall {
pub config: FirewallConfig,
registries: Vec<&'static Registry>,
patterns: HashMap<&'static str, Vec<Regex>>,
filters: Vec<Box<dyn Filter>>,
}
@@ -22,19 +21,18 @@ impl Default for Firewall {
impl Firewall {
pub fn new(config: FirewallConfig) -> Self {
let registries = with_mirrors(&config.registries);
let mut patterns = HashMap::new();
for registry in &registries {
for registry in &config.registries {
let compiled = registry.patterns.iter().map(|p| Regex::new(p.re).expect(p.re));
patterns.insert(registry.prefix, compiled.collect());
}
let ecosystems = registries.iter().map(|r| r.osv_name);
let ecosystems = config.registries.iter().map(|r| r.osv_name);
let denylist = Denylist::new(config.denylist.clone(), ecosystems);
let mut filters: Vec<Box<dyn Filter>> = vec![Box::new(denylist), Box::new(Osv)];
if config.min_age_hours > 0 {
filters.push(Box::new(Age::new(config.min_age_hours)));
}
Firewall { config, registries, patterns, filters }
Firewall { config, patterns, filters }
}
pub fn match_on<'a>(
@@ -42,27 +40,15 @@ impl Firewall {
url: &'a str,
key: fn(&Registry) -> &'static str,
) -> Option<(&'static Registry, &'a str)> {
self.registries.iter().find_map(|r| url.strip_prefix(key(r)).map(|rest| (*r, rest)))
self.config.registries.iter().find_map(|r| url.strip_prefix(key(r)).map(|rest| (*r, rest)))
}
pub fn hosts(&self) -> Vec<&'static str> {
let mut hosts: Vec<&'static str> = Vec::new();
for registry in &self.registries {
let host = registry.host();
if !hosts.contains(&host) {
hosts.push(host);
}
}
hosts
}
pub fn is_https_url(&self, url: &str) -> bool {
let host = host_of(url);
self.registries.iter().any(|r| r.upstream.starts_with("https://") && r.host() == host)
self.config.hosts()
}
pub fn is_index_url(&self, url: &str) -> bool {
self.registries.iter().any(|r| r.index && r.host() == host_of(url))
self.config.registries.iter().any(|r| r.index && r.host() == host_of(url))
}
pub fn resolve(&self, registry: &'static Registry, rest: &str) -> Resolved {
@@ -73,15 +59,3 @@ impl Firewall {
&self.filters
}
}
/// The built-ins, then a copy of one per mirror. Leaked, as a `Registry` is `'static` everywhere.
fn with_mirrors(mirrors: &HashMap<String, Vec<String>>) -> Vec<&'static Registry> {
let mut registries = BUILT_IN.to_vec();
for built_in in BUILT_IN {
for upstream in mirrors.get(built_in.name()).into_iter().flatten() {
let upstream = upstream.clone().leak();
registries.push(Box::leak(Box::new(Registry { upstream, ..(*built_in).clone() })));
}
}
registries
}
+13
View File
@@ -12,6 +12,10 @@ fn main() {
firewall::init_logging("info");
serve()
}
if matches.subcommand_matches("uninstall").is_some() {
firewall::init_logging("info");
uninstall()
}
let mut command = matches.get_many::<String>("COMMAND").unwrap().cloned();
let program = command.next().unwrap();
firewall::init_logging("warn");
@@ -40,6 +44,8 @@ fn options() -> Command {
Command::new("serve")
.about("Serve a local registry for package managers configured to use it"),
)
// Run as root by the macOS app's uninstall.
.subcommand(Command::new("uninstall").hide(true))
.arg(
Arg::new("COMMAND")
.help("A command to run with its package downloads screened")
@@ -70,6 +76,13 @@ fn serve() -> ! {
}
}
fn uninstall() -> ! {
match firewall::os::uninstall() {
Ok(()) => exit(0),
Err(e) => fail("uninstall", &format!("could not uninstall: {e}")),
}
}
fn run(invocation: Invocation) -> ! {
telemetry::set_mode("wrapper");
let command = &invocation.program;
+7 -1
View File
@@ -4,10 +4,16 @@ pub mod macos;
pub mod windows;
#[cfg(target_os = "macos")]
pub use macos::system_config;
pub use macos::{system_config, uninstall};
#[cfg(windows)]
pub use windows::system_config;
/// Elsewhere nothing is installed system-wide.
#[cfg(not(target_os = "macos"))]
pub fn uninstall() -> Result<(), rama::error::BoxError> {
Ok(())
}
#[cfg(not(any(target_os = "macos", windows)))]
pub fn system_config() -> Option<std::path::PathBuf> {
None
-15
View File
@@ -7,11 +7,9 @@ use schannel::cert_context::CertContext;
use schannel::cert_store::{CertAdd, CertStore};
use std::io;
use std::path::Path;
use std::time::{SystemTime, UNIX_EPOCH};
use tracing::warn;
use windows::Win32::Security::Authorization::{GetNamedSecurityInfoW, SE_FILE_OBJECT};
use windows::Win32::Security::*;
use windows_registry::Type;
/// SYSTEM and admins write, users only read, so no one else can plant a CA for node.
const DATA_DIR_ACL: &str = concat!(
@@ -22,9 +20,6 @@ const DATA_DIR_ACL: &str = concat!(
"(A;OICI;FRFX;;;BU)", // allow Users read and execute only
);
/// 1970 in FILETIME, which counts 100 ns from 1601.
const FILETIME_UNIX_EPOCH: u128 = 116_444_736_000_000_000;
/// Trusted machine-wide so restarts keep it; replaced if the hosts change.
pub fn load_or_create_ca(
hosts: &[&str],
@@ -39,16 +34,6 @@ pub fn load_or_create_ca(
LOCAL_MACHINE
.create(REGISTRY_KEY)?
.set_string("ca", ca.to_blob(hosts))?;
// Windows discards CRLs it cached before now, in case an old CA's is cached at our URL.
let now = SystemTime::now().duration_since(UNIX_EPOCH)?.as_nanos() / 100
+ FILETIME_UNIX_EPOCH;
let chain = r"SOFTWARE\Microsoft\Cryptography\OID\EncodingType 0\CertDllCreateCertificateChainEngine\Config";
let resync = (now as u64).to_le_bytes();
LOCAL_MACHINE.create(chain)?.set_bytes(
"ChainCacheResyncFiletime",
Type::Bytes,
&resync,
)?;
ca
}
};
-4
View File
@@ -4,13 +4,9 @@
mod ca;
mod service;
mod tpm;
mod tray;
mod uninstall;
pub use service::run as run_service;
pub use tpm::CaKey;
pub use tray::run as run_tray;
pub use uninstall::uninstall;
use rama::error::BoxError;
use std::net::Ipv4Addr;
-7
View File
@@ -27,13 +27,6 @@ impl CaKey {
}
}
pub(super) fn delete_machine_key() -> Result<(), BoxError> {
if let Some(key) = open_key(KEY_NAME, NCRYPT_MACHINE_KEY_FLAG)? {
key.delete_from_tpm()?;
}
Ok(())
}
/// A per-user key under a random name, which needs no elevation; `delete_from_tpm` it after.
pub fn create_test_key() -> WinResult<Self> {
let name = format!("Strix Firewall test {:016x}", rand::random::<u64>());
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-223
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@@ -1,223 +0,0 @@
//! The notification-area icon, started at sign-in as the menu bar app is on macOS.
use super::*;
use muda::{Menu, MenuEvent, MenuItem, PredefinedMenuItem};
use std::io::Cursor;
use std::time::Duration;
use tray_icon::{Icon, MouseButtonState, TrayIcon, TrayIconBuilder, TrayIconEvent};
use windows::core::{w, PCWSTR};
use windows::Win32::Foundation::*;
use windows::Win32::System::Threading::CreateMutexW;
use windows::Win32::UI::Shell::*;
use windows::Win32::UI::WindowsAndMessaging::*;
use windows_registry::CURRENT_USER;
use windows_service::service::{Service, ServiceAccess, ServiceState};
use windows_service::service_manager::{ServiceManager, ServiceManagerAccess};
const MENU_PAUSE: &str = "pause";
const MENU_RESTART: &str = "restart";
const MENU_LOG: &str = "log";
const MENU_QUIT: &str = "quit";
const LOGO: &[u8] = include_bytes!("tray.png");
/// Runs until Quit, once per session.
pub fn run() -> Result<(), BoxError> {
// Held until we exit.
let _mutex = unsafe { CreateMutexW(None, false, w!(r"Local\StrixFirewallTray"))? };
if unsafe { GetLastError() } == ERROR_ALREADY_EXISTS {
return Ok(());
}
let status = MenuItem::new("", false, None);
let pause = MenuItem::with_id(MENU_PAUSE, "", false, None);
let menu = Menu::with_items(&[
&status,
&PredefinedMenuItem::separator(),
&pause,
&MenuItem::with_id(MENU_RESTART, "Restart", true, None),
&MenuItem::with_id(MENU_LOG, "Open logs", true, None),
&PredefinedMenuItem::separator(),
&MenuItem::with_id(MENU_QUIT, "Quit", true, None),
])?;
let (logo, logo_size) = logo_mask()?;
let icon = TrayIconBuilder::new().with_menu(Box::new(menu)).build()?;
let window = HWND(icon.window_handle());
let mut tray = Tray {
icon,
logo,
logo_size,
drawn: None,
status,
pause,
state: None,
};
tray.update();
unsafe { SetTimer(None, 0, 2000, None) };
let mut message = MSG::default();
while unsafe { GetMessageW(&mut message, None, 0, 0) }.0 > 0 {
unsafe { DispatchMessageW(&message) };
// WM_CLOSE, as the MSI sends, destroys the icon's window.
if !unsafe { IsWindow(Some(window)) }.as_bool() {
break;
}
// Ours, not the icon window's own hover timer.
if message.message == WM_TIMER && message.hwnd.is_invalid() {
tray.update();
}
while let Ok(event) = TrayIconEvent::receiver().try_recv() {
// The menu opens on release, so this keeps it current.
if let TrayIconEvent::Click {
button_state: MouseButtonState::Down,
..
} = event
{
tray.update();
}
}
while let Ok(event) = MenuEvent::receiver().try_recv() {
if event.id == MENU_QUIT {
return Ok(());
}
tray.on_menu(event.id.as_ref());
}
}
Ok(())
}
struct Tray {
icon: TrayIcon,
/// The logo's alpha channel; it is square.
logo: Vec<u8>,
logo_size: u32,
/// Whether the taskbar was light and the service screening when the icon was last set.
drawn: Option<(bool, bool)>,
status: MenuItem,
pause: MenuItem,
/// As the menu last showed it.
state: Option<ServiceState>,
}
impl Tray {
fn update(&mut self) {
self.state = service_state();
let screening = self.state == Some(ServiceState::Running);
let light = light_taskbar();
if self.drawn != Some((light, screening)) {
let rgba = logo_rgba(&self.logo, light, screening);
if let Ok(icon) = Icon::from_rgba(rgba, self.logo_size, self.logo_size) {
let _ = self.icon.set_icon(Some(icon));
}
self.drawn = Some((light, screening));
}
let text = status_text(self.state);
let tip = format!("Strix Firewall: {text}");
let _ = self.icon.set_tooltip(Some(tip));
self.status.set_text(text);
let pause = if screening { "Pause" } else { "Resume" };
self.pause.set_text(pause);
self.pause.set_enabled(self.state.is_some());
}
fn on_menu(&self, id: &str) {
let state = self.state;
let screening = state == Some(ServiceState::Running);
let action: fn() -> Result<(), BoxError> = match id {
MENU_PAUSE if screening => || Ok(open_service()?.pause().map(drop)?),
MENU_PAUSE if state == Some(ServiceState::Paused) => {
|| Ok(open_service()?.resume().map(drop)?)
}
MENU_PAUSE => || Ok(open_service()?.start::<&str>(&[])?),
MENU_RESTART => {
// Off the UI thread, since stopping takes a while.
std::thread::spawn(|| restart().unwrap_or_else(show_error));
return;
}
MENU_LOG => {
let log = HSTRING::from(data_dir().as_path());
let none = PCWSTR::null();
unsafe { ShellExecuteW(None, w!("open"), &log, none, none, SW_SHOWNORMAL) };
return;
}
_ => return,
};
action().unwrap_or_else(show_error);
}
}
fn show_error(error: BoxError) {
let text = HSTRING::from(error.to_string());
unsafe { MessageBoxW(None, &text, w!("Strix Firewall"), MB_ICONERROR) };
}
/// `None` when the service is not installed.
fn service_state() -> Option<ServiceState> {
let manager =
ServiceManager::local_computer(None::<&str>, ServiceManagerAccess::CONNECT).ok()?;
let service = manager
.open_service(SERVICE_NAME, ServiceAccess::QUERY_STATUS)
.ok()?;
Some(service.query_status().ok()?.current_state)
}
fn light_taskbar() -> bool {
let personalize = r"Software\Microsoft\Windows\CurrentVersion\Themes\Personalize";
let Ok(key) = CURRENT_USER.open(personalize) else {
return false;
};
key.get_u32("SystemUsesLightTheme").is_ok_and(|light| light == 1)
}
fn status_text(state: Option<ServiceState>) -> &'static str {
match state {
Some(ServiceState::Running) => "Screening downloads",
Some(ServiceState::Paused) => "Paused",
_ => "Not running",
}
}
fn open_service() -> Result<Service, BoxError> {
let manager = ServiceManager::local_computer(None::<&str>, ServiceManagerAccess::CONNECT)?;
let access = ServiceAccess::QUERY_STATUS
| ServiceAccess::START
| ServiceAccess::STOP
| ServiceAccess::PAUSE_CONTINUE;
Ok(manager.open_service(SERVICE_NAME, access)?)
}
/// Starting again re-reads the config.
fn restart() -> Result<(), BoxError> {
let service = open_service()?;
if service.query_status()?.current_state != ServiceState::Stopped {
service.stop()?;
}
for _ in 0..60 {
if service.query_status()?.current_state == ServiceState::Stopped {
return Ok(service.start::<&str>(&[])?);
}
std::thread::sleep(Duration::from_millis(500));
}
Err("The service did not stop.".into())
}
/// The alpha channel of the RGBA logo, and its width.
fn logo_mask() -> Result<(Vec<u8>, u32), BoxError> {
let mut reader = png::Decoder::new(Cursor::new(LOGO)).read_info()?;
let mut rgba = vec![0; reader.output_buffer_size().ok_or("logo too large")?];
let info = reader.next_frame(&mut rgba)?;
let mut alpha = Vec::with_capacity(rgba.len() / 4);
for pixel in rgba.chunks(4) {
alpha.push(pixel[3]);
}
Ok((alpha, info.width))
}
/// White on a dark taskbar and black on a light one, as macOS draws a template image; dimmed
/// when not screening.
fn logo_rgba(mask: &[u8], light: bool, screening: bool) -> Vec<u8> {
let shade = if light { 0 } else { 255 };
let mut rgba = Vec::with_capacity(mask.len() * 4);
for &alpha in mask {
let alpha = if screening { alpha } else { alpha / 2 };
rgba.extend([shade, shade, shade, alpha]);
}
rgba
}
-41
View File
@@ -1,41 +0,0 @@
use super::ca::remove_our_cas_except;
use super::tpm::CaKey;
use super::*;
use std::io::ErrorKind;
use std::path::Path;
use tracing::info;
/// Run by the MSI after it deletes the service, which would restore the hosts entries. Does
/// nothing for what is already gone.
pub fn uninstall() -> Result<(), BoxError> {
write_hosts_entries(&[])?;
remove_our_cas_except(None)?;
none_if_missing(LOCAL_MACHINE.remove_tree(REGISTRY_KEY))?;
CaKey::delete_machine_key()?;
let entries = match std::fs::read_dir(data_dir()) {
Err(error) if error.kind() == ErrorKind::NotFound => Vec::new(),
entries => entries?.collect::<Result<Vec<_>, _>>()?,
};
for path in entries.into_iter().map(|entry| entry.path()) {
// The admin's config stays for a reinstall, as on macOS.
if path != config_file() {
remove_path(&path)?;
}
}
// Fails while the config is in it.
let _ = std::fs::remove_dir(data_dir());
info!("removed the CA, its key and the data folder");
Ok(())
}
/// A file or a folder, if it is there.
fn remove_path(path: &Path) -> std::io::Result<()> {
let removed = match path.is_dir() {
true => std::fs::remove_dir_all(path),
false => std::fs::remove_file(path),
};
match removed {
Err(error) if error.kind() == ErrorKind::NotFound => Ok(()),
removed => removed,
}
}
+1 -1
View File
@@ -143,7 +143,7 @@ pub fn describe(advisories: &[&Advisory]) -> String {
/// A failed fetch leaves the last good list in place; a list that never loaded is retried every tick.
async fn watch(source: DenylistSource, lists: Arc<Lists>) {
let period = Duration::from_secs(source.poll_secs.get());
let period = Duration::from_secs(source.poll_secs);
let mut seen = revision(&source, None).await;
loop {
tokio::time::sleep(period).await;
+2 -7
View File
@@ -36,7 +36,7 @@ pub struct Pattern {
}
/// Requests to the local server match on `prefix`; intercepted URLs match on `upstream`.
#[derive(Debug, Clone)]
#[derive(Debug)]
pub struct Registry {
pub prefix: &'static str,
pub eco: &'static str,
@@ -52,7 +52,7 @@ pub struct Registry {
}
/// A URL to fetch and a JSON pointer to the timestamp in its reply.
#[derive(Debug, Clone)]
#[derive(Debug)]
pub struct Published {
pub url: &'static str,
pub pointer: &'static str,
@@ -63,11 +63,6 @@ impl Registry {
pub fn host(&self) -> &'static str {
host_of(self.upstream)
}
/// What the config file calls it.
pub fn name(&self) -> &'static str {
self.prefix.trim_matches('/')
}
}
/// The host of an https:// URL, with the path dropped.
+1 -1
View File
@@ -15,7 +15,7 @@ use std::sync::Arc;
use tracing::{info, info_span, warn, Instrument};
pub fn serve(config: FirewallConfig) -> std::io::Result<()> {
let bound = std::net::TcpListener::bind(("127.0.0.1", config.port.get()))?;
let bound = std::net::TcpListener::bind(("127.0.0.1", config.port))?;
bound.set_nonblocking(true)?;
crate::runtime()?.block_on(async move {
let firewall = Arc::new(Firewall::new(config));
+1 -38
View File
@@ -7,7 +7,7 @@ use firewall::{Firewall, FirewallConfig};
fn a_file_only_has_to_set_what_it_changes() {
let config: FirewallConfig = serde_json::from_str(r#"{"fail_open": false}"#).expect("parses");
assert!(!config.fail_open);
assert_eq!(config.port.get(), firewall::DEFAULT_PORT);
assert_eq!(config.port, firewall::DEFAULT_PORT);
}
#[test]
@@ -15,28 +15,6 @@ fn a_misspelled_setting_is_an_error() {
assert!(serde_json::from_str::<FirewallConfig>(r#"{"fail-open": false}"#).is_err());
}
#[test]
fn nonsense_values_are_errors() {
let file = std::env::temp_dir().join(format!("firewall-nonsense-{}.json", std::process::id()));
for bad in [
r#"{"allow": {"nmp": [{"name": "left-pad"}]}}"#,
r#"{"denylist": {"poll_secs": 0}}"#,
r#"{"denylist": {"base": "raw.githubusercontent.com/usestrix"}}"#,
r#"{"denylist": {"revision": "https://"}}"#,
r#"{"port": 0}"#,
r#"{"min_age_hours": 18446744073709551615}"#,
r#"{"registries": {"npm": ["http://npm.example.com/"]}}"#,
r#"{"registries": {"npm": ["https://npm.example.com"]}}"#,
r#"{"registries": {"npm": ["https://npm.example.com:8443/"]}}"#,
r#"{"registries": {"npm": ["https://[email protected]/"]}}"#,
r#"{"registries": {"npm": ["https://npm.example.com/?a=/"]}}"#,
] {
std::fs::write(&file, bad).expect("write");
assert!(FirewallConfig::load_from(std::slice::from_ref(&file)).is_err(), "{bad}");
}
std::fs::remove_file(&file).ok();
}
#[test]
fn the_config_lives_under_the_config_directory() {
let path = path().expect("a home directory");
@@ -60,21 +38,6 @@ fn a_later_file_wins_and_allow_lists_add_up() {
assert_eq!(names, ["a", "b"]);
}
#[tokio::test]
async fn a_mirror_is_screened_like_the_registry_it_copies() {
let config = r#"{"registries": {"npm": ["https://npm.example.com/"]}}"#;
let firewall = Firewall::new(serde_json::from_str(config).expect("parses"));
assert!(firewall.hosts().contains(&"npm.example.com"));
let url = "https://npm.example.com/left-pad/-/left-pad-1.3.0.tgz";
let (registry, rest) = firewall.match_on(url, |r| r.upstream).expect("the mirror");
assert_eq!(firewall.resolve(registry, rest).pkg.map(|p| p.label()), Some("[email protected]".into()));
let unknown = std::env::temp_dir().join(format!("firewall-mirror-{}.json", std::process::id()));
std::fs::write(&unknown, r#"{"registries": {"nmp": ["https://npm.example.com/"]}}"#).expect("write");
let loaded = FirewallConfig::load_from(std::slice::from_ref(&unknown));
std::fs::remove_file(&unknown).ok();
assert!(loaded.is_err());
}
#[tokio::test]
async fn an_allowed_version_skips_the_filters() {
// An unreachable denylist would otherwise leave the package unchecked.
+1 -22
View File
@@ -1,9 +1,7 @@
use firewall::aliasing::forward::downgrade;
use firewall::http::https_url;
use firewall::{aliasing, Firewall, FirewallConfig};
use firewall::Firewall;
use rama::http::{Body, Request};
use std::io::{Read, Write};
use std::net::{TcpListener, TcpStream};
fn request(target: &str, host: Option<&str>) -> Request {
let mut builder = Request::builder().method("GET").uri(target);
@@ -37,25 +35,6 @@ fn requests_always_go_out_over_tls() {
assert_eq!(https_url(&request("/six", None)), None);
}
#[test]
fn a_plain_http_upstream_is_not_upgraded() {
let upstream = TcpListener::bind("127.0.0.1:0").expect("bind");
let addr = upstream.local_addr().expect("address");
std::thread::spawn(move || {
let (mut stream, _) = upstream.accept().expect("accept");
let _ = stream.read(&mut [0; 4096]);
let _ = stream.write_all(b"HTTP/1.1 200 OK\r\nContent-Length: 2\r\n\r\nok");
});
let port = aliasing::spawn(0, FirewallConfig::default()).expect("spawn");
let mut proxy = TcpStream::connect(("127.0.0.1", port)).expect("connect");
let request = format!("GET http://{addr}/x HTTP/1.1\r\nHost: {addr}\r\nConnection: close\r\n\r\n");
proxy.write_all(request.as_bytes()).expect("write");
let mut response = String::new();
proxy.read_to_string(&mut response).expect("read");
assert!(response.starts_with("HTTP/1.1 200") && response.ends_with("ok"), "{response}");
}
#[tokio::test]
async fn downgrade_touches_known_hosts_in_text_only() {
let text = b"https://pypi.org/x https://example.com/y".to_vec();
-193
View File
@@ -1,193 +0,0 @@
<?xml version='1.0' encoding='windows-1252'?>
<!--
Copyright (C) 2017 Christopher R. Field.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<?if $(sys.BUILDARCH) = x64 or $(sys.BUILDARCH) = arm64 ?>
<?define PlatformProgramFilesFolder = "ProgramFiles64Folder" ?>
<?else ?>
<?define PlatformProgramFilesFolder = "ProgramFilesFolder" ?>
<?endif ?>
<Wix xmlns='http://schemas.microsoft.com/wix/2006/wi' xmlns:util='http://schemas.microsoft.com/wix/UtilExtension'>
<Product
Id='*'
Name='strix-firewall'
UpgradeCode='D944C2F6-BF55-4B21-A60E-1BBDB1A66293'
Manufacturer='Strix'
Language='1033'
Codepage='1252'
Version='$(var.Version)'>
<Package Id='*'
Keywords='Installer'
Description='Screens package downloads for known malware before they reach your machine'
Manufacturer='Strix'
InstallerVersion='500'
Languages='1033'
Compressed='yes'
InstallScope='perMachine'
SummaryCodepage='1252'
/>
<MajorUpgrade
Schedule='afterInstallInitialize'
DowngradeErrorMessage='A newer version of [ProductName] is already installed. Setup will now exit.'/>
<Media Id='1' Cabinet='media1.cab' EmbedCab='yes' DiskPrompt='CD-ROM #1'/>
<Property Id='DiskPrompt' Value='strix-firewall Installation'/>
<Directory Id='TARGETDIR' Name='SourceDir'>
<Directory Id='$(var.PlatformProgramFilesFolder)' Name='PFiles'>
<Directory Id='APPLICATIONFOLDER' Name='Strix Firewall'>
<Component Id='Path' Guid='033B1050-23D0-4F5A-A0D3-F4757B4B67E0' KeyPath='yes'>
<Environment
Id='PATH'
Name='PATH'
Value='[APPLICATIONFOLDER]'
Permanent='no'
Part='last'
Action='set'
System='yes'/>
</Component>
<Component Id='binary0' Guid='*'>
<File
Id='exe0'
Name='firewall.exe'
DiskId='1'
Source='$(var.CargoTargetBinDir)\firewall.exe'
KeyPath='yes'/>
</Component>
<Component Id='binary1' Guid='*'>
<File
Id='exe1'
Name='firewall-service.exe'
DiskId='1'
Source='$(var.CargoTargetBinDir)\firewall-service.exe'
KeyPath='yes'/>
<ServiceInstall
Name='StrixFirewall'
DisplayName='Strix Firewall'
Description='Screens package downloads for known malware'
Type='ownProcess'
Start='auto'
ErrorControl='normal'
Vital='yes'>
<!-- The default, except that interactive users (IU) may also start (RP), stop (WP) and pause (DT) it, as the tray does. -->
<PermissionEx Sddl='D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;BA)(A;;CCLCSWRPWPDTLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)'/>
</ServiceInstall>
<!-- Waits, so a service that cannot start fails the install. -->
<ServiceControl Id='StrixFirewall' Name='StrixFirewall' Start='install' Stop='both' Remove='uninstall' Wait='yes'/>
<!-- For clients that read no trust store. SSL_CERT_FILE would replace OpenSSL's bundle. -->
<Environment Id='NODE_EXTRA_CA_CERTS' Name='NODE_EXTRA_CA_CERTS' Value='[CommonAppDataFolder]Strix Firewall\ca.pem' Action='set' System='yes'/>
<Environment Id='UV_SYSTEM_CERTS' Name='UV_SYSTEM_CERTS' Value='1' Action='set' System='yes'/>
</Component>
<Component Id='binary2' Guid='*'>
<File
Id='exe2'
Name='firewall-tray.exe'
DiskId='1'
Source='$(var.CargoTargetBinDir)\firewall-tray.exe'
KeyPath='yes'/>
<RegistryValue
Root='HKLM'
Key='SOFTWARE\Microsoft\Windows\CurrentVersion\Run'
Name='Strix Firewall'
Type='string'
Value='"[#exe2]"'/>
</Component>
</Directory>
</Directory>
</Directory>
<Feature
Id='Binaries'
Title='Application'
Description='Installs the firewall and its service.'
Level='1'
ConfigurableDirectory='APPLICATIONFOLDER'
AllowAdvertise='no'
Display='expand'
Absent='disallow'>
<ComponentRef Id='binary0'/>
<ComponentRef Id='binary1'/>
<ComponentRef Id='binary2'/>
<Feature
Id='Environment'
Title='PATH Environment Variable'
Description='Add the install location of the [ProductName] executable to the PATH system environment variable. This allows the [ProductName] executable to be called from any location.'
Level='1'
Absent='allow'>
<ComponentRef Id='Path'/>
</Feature>
</Feature>
<!-- Removing the app must not leave the hosts file pointing at a service that is gone. -->
<CustomAction
Id='UninstallFirewall'
FileKey='exe1'
ExeCommand='uninstall'
Execute='deferred'
Impersonate='no'
Return='check'/>
<!--
Registry hosts lead nowhere while the service is down, so bring it back, also when it fails to
start. Through sc.exe, as MsiServiceConfigFailureActions cannot restart a service.
-->
<CustomAction
Id='SetFailureActions'
Directory='APPLICATIONFOLDER'
ExeCommand='"[System64Folder]sc.exe" failure StrixFirewall reset= 3600 actions= restart/5000/restart/5000/restart/5000'
Execute='deferred'
Impersonate='no'
Return='check'/>
<CustomAction
Id='SetFailureFlag'
Directory='APPLICATIONFOLDER'
ExeCommand='"[System64Folder]sc.exe" failureflag StrixFirewall 1'
Execute='deferred'
Impersonate='no'
Return='check'/>
<!-- From the exit dialog, which runs as the signed-in user rather than elevated. -->
<CustomAction
Id='StartTray'
Directory='APPLICATIONFOLDER'
ExeCommand='"[#exe2]"'
Return='asyncNoWait'/>
<!-- Before its file is replaced or removed. Trays WM_CLOSE does not reach, as in other sessions, are terminated. -->
<util:CloseApplication Id='CloseTray' Target='firewall-tray.exe' CloseMessage='yes' RebootPrompt='no' TerminateProcess='0'/>
<InstallExecuteSequence>
<!-- An upgrade removes the old version too, but should keep screening. -->
<Custom Action='UninstallFirewall' After='DeleteServices'>REMOVE~="ALL" AND NOT UPGRADINGPRODUCTCODE</Custom>
<Custom Action='SetFailureActions' After='InstallServices'>NOT REMOVE~="ALL"</Custom>
<Custom Action='SetFailureFlag' After='SetFailureActions'>NOT REMOVE~="ALL"</Custom>
<!-- The default, before InstallFiles, is after RemoveFiles, which would find the tray still running. -->
<Custom Action='WixCloseApplications' Before='RemoveFiles'/>
</InstallExecuteSequence>
<SetProperty Id='ARPINSTALLLOCATION' Value='[APPLICATIONFOLDER]' After='CostFinalize'/>
<Property Id='ARPHELPLINK' Value='https://github.com/usestrix/firewall'/>
<UI>
<UIRef Id='WixUI_FeatureTree'/>
<Publish Dialog='WelcomeDlg' Control='Next' Event='NewDialog' Value='CustomizeDlg' Order='99'>1</Publish>
<Publish Dialog='CustomizeDlg' Control='Back' Event='NewDialog' Value='WelcomeDlg' Order='99'>1</Publish>
<Publish Dialog='ExitDialog' Control='Finish' Event='DoAction' Value='StartTray' Order='1'>NOT Installed</Publish>
</UI>
</Product>
</Wix>
+1 -3
View File
@@ -4,9 +4,7 @@ members = ["cargo:core"]
[dist]
cargo-dist-version = "0.32.0"
ci = "github"
installers = ["shell", "powershell", "homebrew", "msi"]
# core/wix/main.wxs is edited to install the service.
allow-dirty = ["msi"]
installers = ["shell", "powershell", "homebrew"]
tap = "usestrix/homebrew-tap"
publish-jobs = ["homebrew", "./publish-crates"]
targets = ["aarch64-apple-darwin", "x86_64-apple-darwin", "aarch64-unknown-linux-gnu", "x86_64-unknown-linux-gnu", "x86_64-pc-windows-msvc"]
-66
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@@ -1,66 +0,0 @@
# Platforms
## Requirements
| | Command prefix | Machine-wide |
|---|---|---|
| macOS | 13+, Apple silicon or Intel | Apple silicon, or an Intel Mac with a T2 chip |
| Windows | 10 or 11, x86-64 | A TPM 2.0, and an admin to install |
| Linux | glibc, x86-64 or arm64 | Not supported |
There are no musl, 32-bit or Windows on Arm builds.
`cargo install strix-firewall` installs only `firewall`. Add `--features machine-wide` for the
machine-wide binaries, which otherwise come with the macOS app and the Windows MSI.
## What is screened
npm, pnpm, bun, pip, pip3, pipenv, pdm, uv, cargo, go and gem, downloading from:
| Ecosystem | Hosts |
|---|---|
| npm | registry.npmjs.org |
| PyPI | pypi.org, files.pythonhosted.org |
| crates.io | index.crates.io, static.crates.io, crates.io |
| RubyGems | rubygems.org |
| Go | proxy.golang.org |
Machine-wide screening also covers mirrors listed in the config file, under the registry they
copy (`npm`, `pypi`, `pypi-files`, `cargo/index`, `cargo-dl`, `crates-api`, `gem` or `go`):
`"registries": {"npm": ["https://npm.example.com/"]}`. A mirror must lay out its paths like that
registry. `firewall <manager>` still sends managers to the public registries.
## How machine-wide screening works
Traffic to the hosts above is decrypted with a local CA that can only sign for those hosts. Its
private key never leaves the Secure Enclave (macOS) or the TPM (Windows).
- **macOS:** a system extension, which you approve in System Settings.
- **Windows:** a service, with a hosts-file entry pointing each registry host at it.
- Without a TPM, the service can't start, so the install fails.
- Any signed-in user can pause screening from the notification-area icon, until they resume
it or the service restarts.
- Clients that use an HTTP proxy or their own DNS skip the hosts file and aren't screened.
Nor is WSL.
- Each client has to trust the CA:
| Client | Trusts it through |
|---|---|
| npm, pnpm, bun | `NODE_EXTRA_CA_CERTS`, set to `%ProgramData%\Strix Firewall\ca.pem` |
| uv | `UV_SYSTEM_CERTS`, which uses the Windows certificate store |
| pip, cargo | The Windows certificate store |
| gem, go | Untested |
Tested on Windows 11 and Apple silicon only.
## Changing settings
Machine-wide screening reads an admin-only JSON file when it starts. After editing it, restart
screening. An invalid file stops screening from starting.
| OS | File | Restart from |
|---|---|---|
| macOS | `/Library/Application Support/Firewall/config.json` | The menu bar's Restart |
| Windows | `%ProgramData%\Strix Firewall\config.json` | The notification-area icon's Restart |
The `firewall` command reads `config.json` from the user's config folder instead.
+3 -3
View File
@@ -280,10 +280,10 @@ final class FirewallModel: NSObject, ObservableObject {
return true
}
/// The extension wrote these as root, so the bundled firewall-uninstall removes them behind an admin prompt; returns what to report if it failed.
/// The extension wrote these as root, so the bundled CLI removes them behind an admin prompt; returns what to report if it failed.
private func removeStoredCA() -> String? {
let uninstaller = Bundle.main.path(forAuxiliaryExecutable: "firewall-uninstall") ?? ""
let script = "do shell script quoted form of \"\(uninstaller)\" with administrator privileges"
let cli = Bundle.main.path(forAuxiliaryExecutable: "firewall") ?? ""
let script = "do shell script quoted form of \"\(cli)\" & \" uninstall\" with administrator privileges"
var error: NSDictionary?
NSAppleScript(source: script)?.executeAndReturnError(&error)
if let error {
+1 -2
View File
@@ -47,7 +47,6 @@ build() {
echo "==> Building"
xcodegen generate >/dev/null
xcodebuild -project Firewall.xcodeproj -scheme StrixFirewall -configuration $CONFIGURATION \
-destination generic/platform=macOS \
-derivedDataPath build CODE_SIGNING_ALLOWED=NO CODE_SIGNING_REQUIRED=NO \
CODE_SIGN_IDENTITY="" CODE_SIGN_ENTITLEMENTS="" build >/dev/null
}
@@ -56,7 +55,7 @@ sign() {
echo "==> Signing with $IDENTITY"
cp "$(profile_for $APP_ID)" "$APP/Contents/embedded.provisionprofile"
cp "$(profile_for $EXT_ID)" "$EXT/Contents/embedded.provisionprofile"
codesign --force --options runtime --timestamp -s "$IDENTITY" "$APP/Contents/MacOS/firewall-uninstall"
codesign --force --options runtime --timestamp -s "$IDENTITY" "$APP/Contents/MacOS/firewall"
codesign --force --options runtime --timestamp \
--entitlements Extension/Extension.entitlements -s "$IDENTITY" "$EXT"
codesign --force --options runtime --timestamp \
+5 -13
View File
@@ -10,7 +10,7 @@ settings:
"CARGO_PROFILE[config=Debug]": debug
"LIBRARY_SEARCH_PATHS[arch=arm64]": $(SRCROOT)/../core/target/aarch64-apple-darwin/$(CARGO_PROFILE)
"LIBRARY_SEARCH_PATHS[arch=x86_64]": $(SRCROOT)/../core/target/x86_64-apple-darwin/$(CARGO_PROFILE)
ARCHS: arm64 x86_64
ARCHS: arm64
"ONLY_ACTIVE_ARCH[config=Debug]": "YES"
SWIFT_VERSION: "5.0"
DEVELOPMENT_TEAM: ${TEAM}
@@ -118,22 +118,14 @@ targets:
- target: Extension
embed: true
codeSign: true
# Uninstall runs this as root to remove what the extension left.
# Uninstall runs the CLI as root to remove what the extension left.
postBuildScripts:
- name: Embed firewall-uninstall
- name: Embed the CLI
basedOnDependencyAnalysis: false
script: |
export PATH="$HOME/.cargo/bin:$PATH"
unset CC CXX CFLAGS CXXFLAGS
export SDKROOT="$(xcrun --sdk macosx --show-sdk-path)"
cd "$SRCROOT/../core"
bins=
for arch in $ARCHS; do
case $arch in
arm64|arm64e) triple=aarch64-apple-darwin ;;
x86_64) triple=x86_64-apple-darwin ;;
esac
cargo build --bin firewall-uninstall --target $triple $([ "$CONFIGURATION" = Debug ] || echo --release)
bins="$bins target/$triple/$CARGO_PROFILE/firewall-uninstall"
done
lipo -create $bins -output "$TARGET_BUILD_DIR/$EXECUTABLE_FOLDER_PATH/firewall-uninstall"
cargo build --bin firewall --target aarch64-apple-darwin $([ "$CONFIGURATION" = Debug ] || echo --release)
cp "target/aarch64-apple-darwin/$CARGO_PROFILE/firewall" "$TARGET_BUILD_DIR/$EXECUTABLE_FOLDER_PATH/"