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| Author | SHA1 | Date | |
|---|---|---|---|
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|
2254b26808 |
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+3
-305
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|
||||
[[package]]
|
||||
name = "windows-threading"
|
||||
version = "0.2.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "3949bd5b99cafdf1c7ca86b43ca564028dfe27d66958f2470940f73d86d75b37"
|
||||
dependencies = [
|
||||
"windows-link",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows_aarch64_gnullvm"
|
||||
version = "0.52.6"
|
||||
|
||||
+2
-46
@@ -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 +10,6 @@ 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.
|
||||
[package.metadata.dist.binaries]
|
||||
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:
|
||||
@@ -35,14 +20,6 @@ crate-type = ["lib"]
|
||||
name = "firewall"
|
||||
path = "src/main.rs"
|
||||
|
||||
[[bin]]
|
||||
name = "firewall-service"
|
||||
path = "src/bin/firewall-service.rs"
|
||||
|
||||
[[bin]]
|
||||
name = "firewall-uninstall"
|
||||
path = "src/bin/firewall-uninstall.rs"
|
||||
|
||||
[[example]]
|
||||
name = "proxy-test"
|
||||
path = "tests/proxy-test/main.rs"
|
||||
@@ -75,10 +52,6 @@ path = "tests/age.rs"
|
||||
name = "mitm"
|
||||
path = "tests/mitm.rs"
|
||||
|
||||
[[test]]
|
||||
name = "tpm"
|
||||
path = "tests/tpm.rs"
|
||||
|
||||
[[test]]
|
||||
name = "managers"
|
||||
path = "tests/managers.rs"
|
||||
@@ -89,7 +62,7 @@ directories = "6.0.0"
|
||||
percent-encoding = "2.3.2"
|
||||
rama = { version = "0.4.0", features = ["boring", "http-full", "ring", "rustls"] }
|
||||
rand = "0.10.2"
|
||||
rcgen = "0.14.10"
|
||||
rcgen = { version = "0.14.10", features = ["x509-parser"] }
|
||||
regex = "1.13.1"
|
||||
semver = "1.0.28"
|
||||
serde = { version = "1.0.229", features = ["derive"] }
|
||||
@@ -103,26 +76,9 @@ which = "8"
|
||||
[target.'cfg(target_vendor = "apple")'.dependencies]
|
||||
core-foundation = "0.10.1"
|
||||
rama = { version = "0.4.0", features = ["net-apple-networkextension"] }
|
||||
security-framework = "3.7.0"
|
||||
security-framework = { version = "3.7.0", features = ["macos-12"] }
|
||||
security-framework-sys = "2.17.0"
|
||||
|
||||
[target.'cfg(windows)'.dependencies]
|
||||
rama = { version = "0.4.0", features = ["dns-hickory"] }
|
||||
schannel = "0.1.29"
|
||||
tokio = { version = "1.53.1", features = ["net"] }
|
||||
tracing-appender = "0.2.5"
|
||||
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"
|
||||
|
||||
[dev-dependencies]
|
||||
tokio = { version = "1.53.1", features = ["macros", "rt-multi-thread"] }
|
||||
|
||||
|
||||
@@ -82,7 +82,7 @@ async fn handle(req: Request, firewall: &Firewall) -> Result<Response, Infallibl
|
||||
};
|
||||
|
||||
let reason = policies::screen(&url, firewall).await;
|
||||
telemetry::screened(firewall, &url, reason.as_deref());
|
||||
telemetry::screened(firewall, &url, reason.is_some());
|
||||
if let Some(reason) = reason {
|
||||
warn!(method = %req.method(), %url, %reason, "blocked");
|
||||
return Ok(blocked(&reason));
|
||||
|
||||
@@ -1,26 +0,0 @@
|
||||
//! Started by the Windows service manager. It logs to a file, having no console.
|
||||
|
||||
#[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}"))
|
||||
}
|
||||
}
|
||||
|
||||
#[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() {}
|
||||
@@ -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() {}
|
||||
+11
-37
@@ -1,7 +1,6 @@
|
||||
use crate::policies::registries::{Registry, BUILT_IN};
|
||||
use directories::ProjectDirs;
|
||||
use serde::Deserialize;
|
||||
use serde_json::{Map, Value};
|
||||
use std::collections::HashMap;
|
||||
use std::io::{Error, ErrorKind};
|
||||
use std::path::PathBuf;
|
||||
@@ -69,31 +68,18 @@ impl Default for DenylistSource {
|
||||
}
|
||||
|
||||
impl FirewallConfig {
|
||||
/// A missing file means defaults; a bad one is an error, so the policy is never quietly relaxed.
|
||||
pub fn load() -> std::io::Result<Self> {
|
||||
let mut paths: Vec<PathBuf> = path().into_iter().collect();
|
||||
paths.extend(crate::os::system_config());
|
||||
Self::load_from(&paths)
|
||||
}
|
||||
|
||||
/// Later files win key by key, but allow lists add up.
|
||||
/// A bad file is an error, so the policy is never quietly relaxed.
|
||||
pub fn load_from(paths: &[PathBuf]) -> std::io::Result<Self> {
|
||||
let mut merged = Map::new();
|
||||
for path in paths {
|
||||
let text = match std::fs::read_to_string(path) {
|
||||
Ok(text) => text,
|
||||
Err(e) if e.kind() == ErrorKind::NotFound => continue,
|
||||
Err(e) => return Err(Error::new(e.kind(), format!("{}: {e}", path.display()))),
|
||||
};
|
||||
let invalid = |e| Error::new(ErrorKind::InvalidData, format!("{}: {e}", path.display()));
|
||||
let layer: Value = serde_json::from_str(&text).map_err(invalid)?;
|
||||
FirewallConfig::deserialize(&layer).map_err(invalid)?;
|
||||
let Value::Object(layer) = layer else {
|
||||
unreachable!("a config parses only from an object");
|
||||
};
|
||||
merge(&mut merged, layer);
|
||||
}
|
||||
Ok(serde_json::from_value(Value::Object(merged)).expect("each layer parsed on its own"))
|
||||
let Some(path) = path() else {
|
||||
return Ok(Self::default());
|
||||
};
|
||||
let text = match std::fs::read_to_string(&path) {
|
||||
Ok(text) => text,
|
||||
Err(e) if e.kind() == ErrorKind::NotFound => return Ok(Self::default()),
|
||||
Err(e) => return Err(Error::new(e.kind(), format!("{}: {e}", path.display()))),
|
||||
};
|
||||
serde_json::from_str(&text)
|
||||
.map_err(|e| Error::new(ErrorKind::InvalidData, format!("{}: {e}", path.display())))
|
||||
}
|
||||
|
||||
pub fn local_url(&self, path: &str) -> String {
|
||||
@@ -117,15 +103,3 @@ pub fn path() -> Option<PathBuf> {
|
||||
let dirs = ProjectDirs::from("com", "usestrix", "firewall")?;
|
||||
Some(dirs.config_dir().join("config.json"))
|
||||
}
|
||||
|
||||
fn merge(base: &mut Map<String, Value>, top: Map<String, Value>) {
|
||||
for (key, value) in top {
|
||||
match (base.get_mut(&key), value) {
|
||||
(Some(Value::Object(base)), Value::Object(top)) => merge(base, top),
|
||||
(Some(Value::Array(base)), Value::Array(top)) => base.extend(top),
|
||||
(_, value) => {
|
||||
base.insert(key, value);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
+13
-2
@@ -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")
|
||||
@@ -50,7 +56,6 @@ fn options() -> Command {
|
||||
}
|
||||
|
||||
fn serve() -> ! {
|
||||
telemetry::set_mode("proxy");
|
||||
let config = load();
|
||||
let port = config.port;
|
||||
print_setup(&config);
|
||||
@@ -70,8 +75,14 @@ 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;
|
||||
let port = match aliasing::spawn(0, load()) {
|
||||
Ok(port) => port,
|
||||
|
||||
+7
-7
@@ -8,7 +8,7 @@ use rcgen::{
|
||||
use std::sync::Arc;
|
||||
use time::{Duration, OffsetDateTime};
|
||||
|
||||
/// Held in the Secure Enclave on macOS, the TPM on Windows, in memory elsewhere.
|
||||
/// Held in the Secure Enclave on macOS, in memory elsewhere.
|
||||
pub type CaSigner = Arc<dyn SigningKey + Send + Sync>;
|
||||
|
||||
pub struct CertificateAuthority {
|
||||
@@ -39,7 +39,8 @@ impl CertificateAuthority {
|
||||
(held == signer.subject_public_key_info()).then_some(ca)
|
||||
}
|
||||
|
||||
fn new(pem: String) -> Result<Self, BoxError> {
|
||||
/// The first certificate is the CA; any after it are its chain, for clients that read no keychain.
|
||||
pub fn new(pem: String) -> Result<Self, BoxError> {
|
||||
Ok(Self { crt: X509::from_pem(pem.as_bytes())?, pem })
|
||||
}
|
||||
}
|
||||
@@ -61,14 +62,13 @@ pub fn crl(hosts: &[&str], signer: &dyn SigningKey) -> Result<Vec<u8>, BoxError>
|
||||
}
|
||||
|
||||
pub const COMMON_NAME: &str = "Strix Firewall";
|
||||
/// With `COMMON_NAME`, how a trust store entry is recognized as ours.
|
||||
pub const ORGANIZATION: &str = "Strix";
|
||||
/// Of a CA an MDM enrolls instead, which must not match `COMMON_NAME`: uninstall deletes those.
|
||||
pub const MANAGED_COMMON_NAME: &str = "Strix Firewall Managed";
|
||||
|
||||
/// Also used by the issuer, whose issuer name must match the CA's subject.
|
||||
pub fn params(hosts: &[&str]) -> CertificateParams {
|
||||
fn params(hosts: &[&str]) -> CertificateParams {
|
||||
let mut name = DistinguishedName::new();
|
||||
name.push(DnType::CommonName, COMMON_NAME);
|
||||
name.push(DnType::OrganizationName, ORGANIZATION);
|
||||
name.push(DnType::OrganizationName, "Strix");
|
||||
|
||||
let mut params = CertificateParams::default();
|
||||
params.distinguished_name = name;
|
||||
|
||||
@@ -1,17 +1,15 @@
|
||||
use super::ca::{params, CaSigner};
|
||||
use super::ca::CaSigner;
|
||||
use rama::error::BoxError;
|
||||
use rama::tls::boring::core::pkey::PKey;
|
||||
use rama::tls::boring::core::x509::X509;
|
||||
use rama::tls::boring::proxy::cert_issuer::{BoringMitmCertIssuer, MitmIssuedCert};
|
||||
use rama::utils::collections::non_empty_vec;
|
||||
use rcgen::{CertificateParams, CrlDistributionPoint, DistinguishedName, DnType, Issuer, KeyPair};
|
||||
use std::sync::Arc;
|
||||
|
||||
/// Leaves name only screened hosts; any other name falls outside the CA's constraint.
|
||||
#[derive(Clone)]
|
||||
pub struct ConstrainedCertIssuer {
|
||||
ca_crt: X509,
|
||||
ca_params: Arc<CertificateParams>,
|
||||
signer: CaSigner,
|
||||
hosts: Vec<&'static str>,
|
||||
crl: Option<String>,
|
||||
@@ -24,8 +22,7 @@ impl ConstrainedCertIssuer {
|
||||
hosts: Vec<&'static str>,
|
||||
crl: Option<String>,
|
||||
) -> Self {
|
||||
let ca_params = Arc::new(params(&hosts));
|
||||
Self { ca_crt, ca_params, signer, hosts, crl }
|
||||
Self { ca_crt, signer, hosts, crl }
|
||||
}
|
||||
}
|
||||
|
||||
@@ -54,7 +51,8 @@ impl BoringMitmCertIssuer for ConstrainedCertIssuer {
|
||||
|
||||
// The TLS server needs the leaf key in memory, so it can't be the platform key.
|
||||
let leaf_key = KeyPair::generate()?;
|
||||
let issuer = Issuer::from_params(&self.ca_params, &*self.signer);
|
||||
let ca_der = self.ca_crt.to_der()?;
|
||||
let issuer = Issuer::from_ca_cert_der(&ca_der.into(), &*self.signer)?;
|
||||
let crt = X509::from_der(leaf.signed_by(&leaf_key, &issuer)?.der())?;
|
||||
let key = PKey::private_key_from_pem(leaf_key.serialize_pem().as_bytes())?;
|
||||
|
||||
|
||||
@@ -3,7 +3,7 @@ mod issuer;
|
||||
mod route;
|
||||
mod screen;
|
||||
|
||||
pub use ca::{crl, CaSigner, CertificateAuthority, COMMON_NAME, ORGANIZATION};
|
||||
pub use ca::{crl, CaSigner, CertificateAuthority, COMMON_NAME, MANAGED_COMMON_NAME};
|
||||
|
||||
use crate::Firewall;
|
||||
use issuer::ConstrainedCertIssuer;
|
||||
|
||||
@@ -37,7 +37,7 @@ where
|
||||
async fn serve(&self, req: Request) -> Result<Response, Self::Error> {
|
||||
if let Some(url) = https_url(&req) {
|
||||
let reason = policies::screen(&url, &self.firewall).await;
|
||||
telemetry::screened(&self.firewall, &url, reason.as_deref());
|
||||
telemetry::screened(&self.firewall, &url, reason.is_some());
|
||||
if let Some(reason) = reason {
|
||||
warn!(%url, "blocked by firewall: {reason}");
|
||||
return Ok(blocked(&reason));
|
||||
|
||||
@@ -33,10 +33,17 @@ impl EnclaveKey {
|
||||
Some(blob) => load(&blob)?,
|
||||
None => create()?,
|
||||
};
|
||||
Self::new(key)
|
||||
}
|
||||
|
||||
pub fn new(key: SecKey) -> Result<Self, BoxError> {
|
||||
let public = key
|
||||
.public_key()
|
||||
.and_then(|public| public.external_representation())
|
||||
.ok_or("secure enclave key has no exportable public half")?;
|
||||
if public.len() != 65 {
|
||||
return Err("the CA key must be P-256".into());
|
||||
}
|
||||
Ok(EnclaveKey { key, public: public.to_vec() })
|
||||
}
|
||||
|
||||
|
||||
@@ -1,11 +1,53 @@
|
||||
use super::{CA_FILE, KEYCHAIN_ACCOUNT, KEYCHAIN_SERVICE};
|
||||
use crate::mitm::CertificateAuthority;
|
||||
use super::enclave::EnclaveKey;
|
||||
use super::{CA_FILE, KEYCHAIN_ACCOUNT, KEYCHAIN_SERVICE, SYSTEM_KEYCHAIN};
|
||||
use crate::mitm::{CertificateAuthority, MANAGED_COMMON_NAME};
|
||||
use rama::error::BoxError;
|
||||
use rama::net::apple::networkextension::system_keychain;
|
||||
use rama::tls::boring::core::x509::X509;
|
||||
use rcgen::SigningKey;
|
||||
use security_framework::item::{ItemClass, ItemSearchOptions, Limit, Reference, SearchResult};
|
||||
use security_framework::os::macos::keychain::SecKeychain;
|
||||
use security_framework::policy::SecPolicy;
|
||||
use security_framework::trust::SecTrust;
|
||||
use security_framework_sys::base::errSecItemNotFound;
|
||||
use std::path::Path;
|
||||
use tracing::{info, warn};
|
||||
|
||||
/// A CA an MDM enrolled over ACME. The MDM trusts its issuer, so the user is never asked to.
|
||||
pub fn managed_certificate_authority(
|
||||
) -> Result<Option<(EnclaveKey, CertificateAuthority)>, BoxError> {
|
||||
let found = ItemSearchOptions::new()
|
||||
.class(ItemClass::identity())
|
||||
.keychains(&[SecKeychain::open(SYSTEM_KEYCHAIN)?])
|
||||
.load_refs(true)
|
||||
.limit(Limit::All)
|
||||
.search();
|
||||
let results = match found {
|
||||
Ok(results) => results,
|
||||
Err(error) if error.code() == errSecItemNotFound => return Ok(None),
|
||||
Err(error) => return Err(error.into()),
|
||||
};
|
||||
for result in results {
|
||||
let SearchResult::Ref(Reference::Identity(identity)) = result else { continue };
|
||||
let crt = identity.certificate()?;
|
||||
if crt.subject_summary() != MANAGED_COMMON_NAME {
|
||||
continue;
|
||||
}
|
||||
let key = EnclaveKey::new(identity.private_key()?)?;
|
||||
let trust = SecTrust::create_with_certificates(&[crt], &[SecPolicy::create_x509()])?;
|
||||
trust.evaluate_with_error().map_err(|e| format!("the managed CA is not trusted: {e}"))?;
|
||||
let mut pem = String::new();
|
||||
for crt in trust.chain() {
|
||||
pem.push_str(std::str::from_utf8(&X509::from_der(&crt.to_der())?.to_pem()?)?);
|
||||
}
|
||||
let ca = CertificateAuthority::new(pem)?;
|
||||
info!("using the CA enrolled by MDM");
|
||||
export_pem(&ca);
|
||||
return Ok(Some((key, ca)));
|
||||
}
|
||||
Ok(None)
|
||||
}
|
||||
|
||||
/// Kept in the System keychain so trust survives restarts; replaced if the hosts change.
|
||||
pub fn certificate_authority(
|
||||
hosts: &[&str],
|
||||
|
||||
+13
-11
@@ -23,7 +23,6 @@ use rama::rt::Executor;
|
||||
use rama::telemetry::tracing::apple::oslog::{OsLogLayer, Privacy};
|
||||
use rama::{Layer, Service};
|
||||
use std::convert::Infallible;
|
||||
use std::path::PathBuf;
|
||||
use std::sync::Arc;
|
||||
use tracing_subscriber::layer::SubscriberExt;
|
||||
use tracing_subscriber::util::SubscriberInitExt;
|
||||
@@ -33,7 +32,7 @@ const KEYCHAIN_SERVICE: &str = BUNDLE_ID;
|
||||
const KEYCHAIN_ACCOUNT: &str = "ca";
|
||||
/// Must match `macos/LaunchAgents/com.usestrix.firewall.env.plist`, which points npm at it.
|
||||
const CA_FILE: &str = "/Library/Application Support/Firewall/ca.pem";
|
||||
const CONFIG_FILE: &str = "/Library/Application Support/Firewall/config.json";
|
||||
const SYSTEM_KEYCHAIN: &str = "/Library/Keychains/System.keychain";
|
||||
|
||||
#[derive(Clone)]
|
||||
struct Handler {
|
||||
@@ -99,20 +98,23 @@ impl TransparentProxyHandlerFactory for Factory {
|
||||
}
|
||||
}
|
||||
|
||||
pub fn system_config() -> Option<PathBuf> {
|
||||
Some(CONFIG_FILE.into())
|
||||
}
|
||||
|
||||
fn handler(exec: Executor) -> Result<Handler, BoxError> {
|
||||
telemetry::set_mode("extension");
|
||||
telemetry::heartbeat();
|
||||
let config = FirewallConfig::load_from(&[CONFIG_FILE.into()]).inspect_err(|_| telemetry::error("config"))?;
|
||||
let config = FirewallConfig::load().inspect_err(|_| telemetry::error("config"))?;
|
||||
let firewall = Arc::new(Firewall::new(config));
|
||||
let hosts = firewall.hosts();
|
||||
let key = enclave::EnclaveKey::load_or_create().inspect_err(|_| telemetry::error("enclave"))?;
|
||||
let managed = install::managed_certificate_authority().inspect_err(|_| telemetry::error("ca"))?;
|
||||
let (key, ca) = match managed {
|
||||
Some(managed) => managed,
|
||||
None => {
|
||||
let key = enclave::EnclaveKey::load_or_create()
|
||||
.inspect_err(|_| telemetry::error("enclave"))?;
|
||||
let ca = install::certificate_authority(&hosts, &key);
|
||||
(key, ca.inspect_err(|_| telemetry::error("ca"))?)
|
||||
}
|
||||
};
|
||||
let signer: mitm::CaSigner = Arc::new(key);
|
||||
let ca = install::certificate_authority(&hosts, &*signer);
|
||||
let ca = Arc::new(ca.inspect_err(|_| telemetry::error("ca"))?);
|
||||
let ca = Arc::new(ca);
|
||||
let service = mitm::mitm_service(firewall, &ca, signer, None, exec);
|
||||
Ok(Handler { ca, hosts, service })
|
||||
}
|
||||
|
||||
@@ -1,5 +1,5 @@
|
||||
use super::enclave::EnclaveKey;
|
||||
use super::{CA_FILE, KEYCHAIN_ACCOUNT, KEYCHAIN_SERVICE};
|
||||
use super::{CA_FILE, KEYCHAIN_ACCOUNT, KEYCHAIN_SERVICE, SYSTEM_KEYCHAIN};
|
||||
use crate::mitm::COMMON_NAME;
|
||||
use rama::error::BoxError;
|
||||
use rama::net::apple::networkextension::system_keychain;
|
||||
@@ -17,7 +17,7 @@ const ENV_AGENT: &str = "/Library/LaunchAgents/com.usestrix.firewall.env.plist";
|
||||
pub fn uninstall() -> Result<(), BoxError> {
|
||||
let deleted = ItemSearchOptions::new()
|
||||
.class(ItemClass::certificate())
|
||||
.keychains(&[SecKeychain::open("/Library/Keychains/System.keychain")?])
|
||||
.keychains(&[SecKeychain::open(SYSTEM_KEYCHAIN)?])
|
||||
.label(COMMON_NAME)
|
||||
.limit(Limit::All)
|
||||
.delete();
|
||||
|
||||
+5
-8
@@ -1,14 +1,11 @@
|
||||
#[cfg(target_os = "macos")]
|
||||
pub mod macos;
|
||||
#[cfg(windows)]
|
||||
pub mod windows;
|
||||
|
||||
#[cfg(target_os = "macos")]
|
||||
pub use macos::system_config;
|
||||
#[cfg(windows)]
|
||||
pub use windows::system_config;
|
||||
pub use macos::uninstall;
|
||||
|
||||
#[cfg(not(any(target_os = "macos", windows)))]
|
||||
pub fn system_config() -> Option<std::path::PathBuf> {
|
||||
None
|
||||
/// Elsewhere nothing is installed system-wide.
|
||||
#[cfg(not(target_os = "macos"))]
|
||||
pub fn uninstall() -> Result<(), rama::error::BoxError> {
|
||||
Ok(())
|
||||
}
|
||||
@@ -1,135 +0,0 @@
|
||||
use super::*;
|
||||
use crate::mitm::{CertificateAuthority, COMMON_NAME, ORGANIZATION};
|
||||
use rama::tls::boring::core::nid::Nid;
|
||||
use rama::tls::boring::core::x509::X509;
|
||||
use rcgen::SigningKey;
|
||||
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!(
|
||||
"O:BA", // owner: Administrators
|
||||
"D:P", // protected: ignore ProgramData's rules, which let any user create files
|
||||
"(A;OICI;FA;;;SY)", // allow SYSTEM full control, inherited by files (OI) and subfolders (CI)
|
||||
"(A;OICI;FA;;;BA)", // allow Administrators full control
|
||||
"(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],
|
||||
signer: &dyn SigningKey,
|
||||
) -> Result<CertificateAuthority, BoxError> {
|
||||
let stored = read_registry_string(REGISTRY_KEY, "ca")?;
|
||||
let ca = match stored.and_then(|blob| CertificateAuthority::from_blob(&blob, hosts, signer)) {
|
||||
Some(ca) => ca,
|
||||
None => {
|
||||
warn!(?hosts, "minting a new CA");
|
||||
let ca = CertificateAuthority::generate(hosts, signer)?;
|
||||
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
|
||||
}
|
||||
};
|
||||
// Idempotent, and the registry value can outlive the certificate.
|
||||
let der = ca.crt.to_der()?;
|
||||
let mut store = CertStore::open_local_machine("Root")?;
|
||||
store.add_cert(&CertContext::new(&der)?, CertAdd::ReplaceExisting)?;
|
||||
remove_our_cas_except(Some(&der))?;
|
||||
// For clients that read no trust store; screening still works for the rest if this fails.
|
||||
let exported = secure_data_dir().and_then(|dir| std::fs::write(dir.join("ca.pem"), &ca.pem));
|
||||
if let Err(error) = exported {
|
||||
warn!(%error, "could not export the CA");
|
||||
}
|
||||
Ok(ca)
|
||||
}
|
||||
|
||||
/// Created on first use, its owner and ACL reset every time. One a user made first, or a link,
|
||||
/// is replaced: its owner could grant itself access again, and a link would redirect our writes.
|
||||
pub(super) fn secure_data_dir() -> io::Result<PathBuf> {
|
||||
let dir = data_dir();
|
||||
match std::fs::symlink_metadata(&dir) {
|
||||
Ok(meta) if meta.file_type().is_symlink() => std::fs::remove_dir(&dir)?,
|
||||
Ok(_) if !owned_by_admins(&dir)? => {
|
||||
warn!(dir = %dir.display(), "replacing a data folder not created by an admin");
|
||||
std::fs::remove_dir_all(&dir)?
|
||||
}
|
||||
_ => {}
|
||||
}
|
||||
std::fs::create_dir_all(&dir)?;
|
||||
let info = OWNER_SECURITY_INFORMATION
|
||||
| DACL_SECURITY_INFORMATION
|
||||
| PROTECTED_DACL_SECURITY_INFORMATION;
|
||||
let path = HSTRING::from(dir.as_path());
|
||||
let acl = security_descriptor(DATA_DIR_ACL)?;
|
||||
unsafe { SetFileSecurityW(&path, info, PSECURITY_DESCRIPTOR(acl.0)).ok()? };
|
||||
Ok(dir)
|
||||
}
|
||||
|
||||
/// By SYSTEM or the Administrators group, as what an elevated process creates is.
|
||||
fn owned_by_admins(path: &Path) -> windows::core::Result<bool> {
|
||||
let (mut owner, mut descriptor) = (PSID::default(), PSECURITY_DESCRIPTOR::default());
|
||||
unsafe {
|
||||
GetNamedSecurityInfoW(
|
||||
&HSTRING::from(path),
|
||||
SE_FILE_OBJECT,
|
||||
OWNER_SECURITY_INFORMATION,
|
||||
Some(&mut owner),
|
||||
None,
|
||||
None,
|
||||
None,
|
||||
&mut descriptor,
|
||||
)
|
||||
.ok()?
|
||||
};
|
||||
let admins = [WinBuiltinAdministratorsSid, WinLocalSystemSid];
|
||||
let owned = admins
|
||||
.into_iter()
|
||||
.any(|sid| unsafe { IsWellKnownSid(owner, sid) }.as_bool());
|
||||
// `owner` points into the descriptor, so it is freed last.
|
||||
unsafe { LocalFree(Some(HLOCAL(descriptor.0))) };
|
||||
Ok(owned)
|
||||
}
|
||||
|
||||
/// Drops every CA of ours from LocalMachine\Root but `keep`.
|
||||
pub(super) fn remove_our_cas_except(keep: Option<&[u8]>) -> Result<(), BoxError> {
|
||||
for cert in CertStore::open_local_machine("Root")?.certs() {
|
||||
if keep != Some(cert.to_der()) && is_our_ca(cert.to_der()) {
|
||||
cert.delete()?;
|
||||
}
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn is_our_ca(der: &[u8]) -> bool {
|
||||
let Ok(crt) = X509::from_der(der) else {
|
||||
return false;
|
||||
};
|
||||
let name = |nid| {
|
||||
let entry = crt.subject_name().entries_by_nid(nid).next()?;
|
||||
Some(entry.data().as_utf8().ok()?.to_string())
|
||||
};
|
||||
name(Nid::COMMONNAME).as_deref() == Some(COMMON_NAME)
|
||||
&& name(Nid::ORGANIZATIONNAME).as_deref() == Some(ORGANIZATION)
|
||||
}
|
||||
@@ -1,133 +0,0 @@
|
||||
//! The hosts file sends each registry host to its own loopback address, where a
|
||||
//! LocalSystem service screens it as the macOS extension does.
|
||||
|
||||
mod ca;
|
||||
mod service;
|
||||
mod tpm;
|
||||
mod uninstall;
|
||||
|
||||
pub use service::run as run_service;
|
||||
pub use tpm::CaKey;
|
||||
pub use uninstall::uninstall;
|
||||
|
||||
use rama::error::BoxError;
|
||||
use std::net::Ipv4Addr;
|
||||
use std::path::PathBuf;
|
||||
use windows::core::{Owned, GUID, HSTRING};
|
||||
use windows::Win32::Foundation::{LocalFree, ERROR_FILE_NOT_FOUND, HLOCAL};
|
||||
use windows::Win32::Security::Authorization::*;
|
||||
use windows::Win32::Security::PSECURITY_DESCRIPTOR;
|
||||
use windows::Win32::System::Com::CoTaskMemFree;
|
||||
use windows::Win32::System::Environment::ExpandEnvironmentStringsW;
|
||||
use windows::Win32::UI::Shell::*;
|
||||
use windows_registry::LOCAL_MACHINE;
|
||||
|
||||
const SERVICE_NAME: &str = "StrixFirewall";
|
||||
/// Admin-only, so it holds the CA as the System keychain does on macOS.
|
||||
const REGISTRY_KEY: &str = r"SOFTWARE\Strix Firewall";
|
||||
/// Serves the CRL our leaves point at; schannel fails closed without one.
|
||||
const CRL_ADDRESS: Ipv4Addr = Ipv4Addr::new(127, 0, 0, 2);
|
||||
|
||||
/// Admin-only; holds the exported CA, the service log and the config.
|
||||
fn data_dir() -> PathBuf {
|
||||
known_folder(&FOLDERID_ProgramData).join("Strix Firewall")
|
||||
}
|
||||
|
||||
/// Admin-only, so users cannot relax what the service screens.
|
||||
fn config_file() -> PathBuf {
|
||||
data_dir().join("config.json")
|
||||
}
|
||||
|
||||
pub fn system_config() -> Option<PathBuf> {
|
||||
Some(config_file())
|
||||
}
|
||||
|
||||
/// In the folder Windows reads it from, normally %SystemRoot%\System32\drivers\etc.
|
||||
fn hosts_file() -> PathBuf {
|
||||
let key = r"SYSTEM\CurrentControlSet\Services\Tcpip\Parameters";
|
||||
let configured = LOCAL_MACHINE
|
||||
.open(key)
|
||||
.and_then(|key| key.get_hstring("DataBasePath"));
|
||||
let dir = match configured {
|
||||
Ok(dir) => expand_environment(&dir),
|
||||
Err(_) => known_folder(&FOLDERID_System).join(r"drivers\etc"),
|
||||
};
|
||||
dir.join("hosts")
|
||||
}
|
||||
|
||||
/// Windows always has its known folders.
|
||||
fn known_folder(id: &GUID) -> PathBuf {
|
||||
let path = unsafe { SHGetKnownFolderPath(id, KF_FLAG_DEFAULT, None) }.expect("a known folder");
|
||||
let dir = PathBuf::from(unsafe { path.to_hstring() }.to_os_string());
|
||||
unsafe { CoTaskMemFree(Some(path.0 as *const _)) };
|
||||
dir
|
||||
}
|
||||
|
||||
fn expand_environment(path: &HSTRING) -> PathBuf {
|
||||
let len = unsafe { ExpandEnvironmentStringsW(path, None) };
|
||||
let mut expanded = vec![0; len as usize];
|
||||
let len = unsafe { ExpandEnvironmentStringsW(path, Some(&mut expanded)) };
|
||||
// Less the terminating null.
|
||||
PathBuf::from(String::from_utf16_lossy(
|
||||
&expanded[..(len as usize).saturating_sub(1)],
|
||||
))
|
||||
}
|
||||
|
||||
/// From 127.0.0.3, leaving 127.0.0.1 to whatever else serves locally.
|
||||
fn loopback_addresses(hosts: &[&'static str]) -> Vec<(Ipv4Addr, &'static str)> {
|
||||
(3..)
|
||||
.zip(hosts)
|
||||
.map(|(i, host)| (Ipv4Addr::new(127, 0, 0, i), *host))
|
||||
.collect()
|
||||
}
|
||||
|
||||
/// Points each host at its listener, replacing the lines we wrote before; with none, only removes
|
||||
/// them. Bytes, as the file needn't be UTF-8, and every other line is kept as it was.
|
||||
fn write_hosts_entries(hosts: &[&'static str]) -> std::io::Result<()> {
|
||||
const TAG: &str = " # Strix Firewall";
|
||||
let old = std::fs::read(hosts_file())?;
|
||||
let ours = |line: &&[u8]| line.trim_ascii_end().ends_with(TAG.as_bytes());
|
||||
let lines = old.split_inclusive(|&byte| byte == b'\n');
|
||||
let mut new: Vec<u8> = lines
|
||||
.filter(|line| !ours(line))
|
||||
.flatten()
|
||||
.copied()
|
||||
.collect();
|
||||
if !new.is_empty() && !new.ends_with(b"\n") {
|
||||
new.extend_from_slice(b"\r\n");
|
||||
}
|
||||
for (address, host) in loopback_addresses(hosts) {
|
||||
new.extend_from_slice(format!("{address} {host}{TAG}\r\n").as_bytes());
|
||||
}
|
||||
std::fs::write(hosts_file(), new)
|
||||
}
|
||||
|
||||
/// Parses `sddl`; freed on drop.
|
||||
fn security_descriptor(sddl: &str) -> windows::core::Result<Owned<HLOCAL>> {
|
||||
let mut descriptor = PSECURITY_DESCRIPTOR::default();
|
||||
unsafe {
|
||||
ConvertStringSecurityDescriptorToSecurityDescriptorW(
|
||||
&HSTRING::from(sddl),
|
||||
SDDL_REVISION_1,
|
||||
&mut descriptor,
|
||||
None,
|
||||
)?
|
||||
};
|
||||
Ok(unsafe { Owned::new(HLOCAL(descriptor.0)) })
|
||||
}
|
||||
|
||||
fn read_registry_string(key: &str, value: &str) -> Result<Option<String>, BoxError> {
|
||||
none_if_missing(
|
||||
LOCAL_MACHINE
|
||||
.open(key)
|
||||
.and_then(|key| key.get_string(value)),
|
||||
)
|
||||
}
|
||||
|
||||
/// `None` for a missing key or value.
|
||||
fn none_if_missing<T>(result: windows_registry::Result<T>) -> Result<Option<T>, BoxError> {
|
||||
match result {
|
||||
Err(error) if error.code() == ERROR_FILE_NOT_FOUND.to_hresult() => Ok(None),
|
||||
result => Ok(Some(result?)),
|
||||
}
|
||||
}
|
||||
@@ -1,234 +0,0 @@
|
||||
use super::ca::{load_or_create_ca, secure_data_dir};
|
||||
use super::tpm::CaKey;
|
||||
use super::{config_file, loopback_addresses, write_hosts_entries, CRL_ADDRESS, SERVICE_NAME};
|
||||
use crate::config::FirewallConfig;
|
||||
use crate::http::{reply, text};
|
||||
use crate::{mitm, telemetry, Firewall};
|
||||
use rama::dns::client::hickory::resolver::config::ResolveHosts;
|
||||
use rama::dns::client::hickory::{default_resolver_opts, HickoryDnsResolver};
|
||||
use rama::dns::client::resolver::DnsAddressResolver;
|
||||
use rama::dns::client::try_init_global_dns_resolver;
|
||||
use rama::error::BoxError;
|
||||
use rama::http::server::HttpServer;
|
||||
use rama::http::{Request, Response};
|
||||
use rama::io::BridgeIo;
|
||||
use rama::layer::ConsumeErrLayer;
|
||||
use rama::net::address::Domain;
|
||||
use rama::rt::Executor;
|
||||
use rama::service::service_fn;
|
||||
use rama::tcp::server::TcpListener;
|
||||
use rama::tcp::TcpStream;
|
||||
use rama::{Layer, Service};
|
||||
use rcgen::SigningKey;
|
||||
use std::convert::Infallible;
|
||||
use std::ffi::OsString;
|
||||
use std::net::{IpAddr, Ipv4Addr};
|
||||
use std::sync::Arc;
|
||||
use std::time::Duration;
|
||||
use tracing_appender::rolling::{RollingFileAppender, Rotation};
|
||||
use windows_service::service::*;
|
||||
use windows_service::service_control_handler::{
|
||||
self, ServiceControlHandlerResult, ServiceStatusHandle,
|
||||
};
|
||||
use windows_service::{define_windows_service, service_dispatcher};
|
||||
|
||||
const CRL_PATH: &str = "/ca.crl";
|
||||
|
||||
define_windows_service!(ffi_service_main, service_main);
|
||||
|
||||
/// Called by the service control manager, never by hand.
|
||||
pub fn run() -> windows_service::Result<()> {
|
||||
service_dispatcher::start(SERVICE_NAME, ffi_service_main)
|
||||
}
|
||||
|
||||
/// stderr goes nowhere in a service, so events go to a file beside the CA.
|
||||
fn service_main(_arguments: Vec<OsString>) {
|
||||
let log = secure_data_dir().ok().and_then(|dir| {
|
||||
RollingFileAppender::builder()
|
||||
.rotation(Rotation::DAILY)
|
||||
.filename_prefix("firewall")
|
||||
.filename_suffix("log")
|
||||
.max_log_files(7)
|
||||
.build(dir)
|
||||
.ok()
|
||||
});
|
||||
if let Some(appender) = log {
|
||||
let filter = crate::log_filter("info");
|
||||
let _ = tracing_subscriber::fmt()
|
||||
.with_env_filter(filter)
|
||||
.with_ansi(false)
|
||||
.with_writer(appender)
|
||||
.try_init();
|
||||
}
|
||||
std::panic::set_hook(Box::new(|panic| tracing::error!("{panic}")));
|
||||
if let Err(error) = run_until_stopped() {
|
||||
tracing::error!(%error, "the service stopped");
|
||||
}
|
||||
}
|
||||
|
||||
fn run_until_stopped() -> Result<(), BoxError> {
|
||||
let (control_sender, mut control_receiver) = tokio::sync::mpsc::unbounded_channel();
|
||||
let status = service_control_handler::register(SERVICE_NAME, move |control| match control {
|
||||
ServiceControl::Stop
|
||||
| ServiceControl::Shutdown
|
||||
| ServiceControl::Pause
|
||||
| ServiceControl::Continue => {
|
||||
let _ = control_sender.send(control);
|
||||
ServiceControlHandlerResult::NoError
|
||||
}
|
||||
ServiceControl::Interrogate => ServiceControlHandlerResult::NoError,
|
||||
_ => ServiceControlHandlerResult::NotImplemented,
|
||||
})?;
|
||||
set_status(&status, ServiceState::StartPending, false)?;
|
||||
let served = crate::runtime()?.block_on(async {
|
||||
let hosts = match start_screening(&status).await {
|
||||
Ok(hosts) => hosts,
|
||||
Err(error) => {
|
||||
telemetry::send().await;
|
||||
return Err(error);
|
||||
}
|
||||
};
|
||||
// Only pausing removes our hosts entries; a stop or crash keeps them, failing closed.
|
||||
while let Some(control) = control_receiver.recv().await {
|
||||
let (hosts, state) = match control {
|
||||
ServiceControl::Pause => (&[][..], ServiceState::Paused),
|
||||
ServiceControl::Continue => (&hosts[..], ServiceState::Running),
|
||||
_ => break,
|
||||
};
|
||||
match write_hosts_entries(hosts) {
|
||||
Ok(()) => set_status(&status, state, false)?,
|
||||
Err(error) => tracing::error!(%error, "could not rewrite the hosts file"),
|
||||
}
|
||||
}
|
||||
Ok::<_, BoxError>(())
|
||||
});
|
||||
// A failed stop is what makes the service manager restart it.
|
||||
set_status(&status, ServiceState::Stopped, served.is_err())?;
|
||||
served
|
||||
}
|
||||
|
||||
async fn start_screening(status: &ServiceStatusHandle) -> Result<Vec<&'static str>, BoxError> {
|
||||
telemetry::set_mode("service");
|
||||
telemetry::heartbeat();
|
||||
// Never the hosts file, which points back at us; the Firewall's lookups included.
|
||||
let mut options = default_resolver_opts();
|
||||
options.use_hosts_file = ResolveHosts::Never;
|
||||
let resolver = HickoryDnsResolver::try_new_system_with_options(options)?;
|
||||
let _ = try_init_global_dns_resolver(resolver.clone());
|
||||
let config =
|
||||
FirewallConfig::load_from(&[config_file()]).inspect_err(|_| telemetry::error("config"))?;
|
||||
let firewall = Arc::new(Firewall::new(config));
|
||||
let hosts = firewall.hosts();
|
||||
let key = CaKey::load_or_create().inspect_err(|_| telemetry::error("tpm"))?;
|
||||
let signer: mitm::CaSigner = Arc::new(key);
|
||||
let ca = load_or_create_ca(&hosts, &*signer).inspect_err(|_| telemetry::error("ca"))?;
|
||||
let exec = Executor::default();
|
||||
|
||||
// An empty CRL for the leaves to point at, signed fresh for each fetch.
|
||||
let crl_url = format!("http://{CRL_ADDRESS}{CRL_PATH}");
|
||||
let (crl_hosts, crl_signer) = (hosts.clone(), Arc::clone(&signer));
|
||||
let crl = service_fn(move |req: Request| {
|
||||
let response = if req.uri().request_target() == CRL_PATH {
|
||||
crl_response(&crl_hosts, &*crl_signer)
|
||||
} else {
|
||||
text(404, "No route.\n")
|
||||
};
|
||||
async move { Ok::<_, Infallible>(response) }
|
||||
});
|
||||
let crl = HttpServer::auto(exec.clone()).service(crl);
|
||||
tokio::spawn(listen_on(CRL_ADDRESS, 80, &exec)?.serve(crl));
|
||||
|
||||
let service = mitm::mitm_service(firewall, &ca, signer, Some(crl_url), exec.clone());
|
||||
for (address, host) in loopback_addresses(&hosts) {
|
||||
for port in [80, 443] {
|
||||
let upstream = RedirectedHost {
|
||||
host,
|
||||
port,
|
||||
resolver: resolver.clone(),
|
||||
service: service.clone(),
|
||||
};
|
||||
let upstream = ConsumeErrLayer::trace_as_debug().into_layer(upstream);
|
||||
tokio::spawn(listen_on(address, port, &exec)?.serve(upstream));
|
||||
}
|
||||
}
|
||||
// Rewritten on every start, so a restart picks up a changed host list.
|
||||
write_hosts_entries(&hosts)?;
|
||||
tracing::info!(?hosts, "screening redirected registry traffic");
|
||||
set_status(status, ServiceState::Running, false)?;
|
||||
Ok(hosts)
|
||||
}
|
||||
|
||||
fn crl_response(hosts: &[&str], signer: &dyn SigningKey) -> Response {
|
||||
match mitm::crl(hosts, signer) {
|
||||
Ok(der) => reply(200, "application/pkix-crl", der),
|
||||
Err(error) => text(503, &format!("{error}\n")),
|
||||
}
|
||||
}
|
||||
|
||||
fn listen_on(address: Ipv4Addr, port: u16, exec: &Executor) -> std::io::Result<TcpListener> {
|
||||
let bound = std::net::TcpListener::bind((address, port))?;
|
||||
bound.set_nonblocking(true)?;
|
||||
TcpListener::try_from_std_tcp_listener(bound, exec.clone())
|
||||
}
|
||||
|
||||
/// Each listener is bound to one host's address, which is how it knows where to connect.
|
||||
#[derive(Clone)]
|
||||
struct RedirectedHost {
|
||||
host: &'static str,
|
||||
port: u16,
|
||||
resolver: HickoryDnsResolver,
|
||||
service: mitm::MitmService,
|
||||
}
|
||||
|
||||
impl Service<TcpStream> for RedirectedHost {
|
||||
type Output = ();
|
||||
type Error = BoxError;
|
||||
|
||||
async fn serve(&self, ingress: TcpStream) -> Result<(), BoxError> {
|
||||
let address = self.resolve().await?;
|
||||
let egress = tokio::net::TcpStream::connect((address, self.port)).await?;
|
||||
let streams = BridgeIo(ingress, TcpStream::from(egress));
|
||||
self.service.serve(streams).await
|
||||
}
|
||||
}
|
||||
|
||||
impl RedirectedHost {
|
||||
/// IPv4 if it has one, else IPv6.
|
||||
async fn resolve(&self) -> Result<IpAddr, BoxError> {
|
||||
let domain = Domain::from_static(self.host);
|
||||
if let Some(Ok(v4)) = self.resolver.lookup_ipv4_first(domain.clone()).await {
|
||||
return Ok(v4.into());
|
||||
}
|
||||
match self.resolver.lookup_ipv6_first(domain).await {
|
||||
Some(v6) => Ok(v6?.into()),
|
||||
None => Err(format!("{} has no address", self.host).into()),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn set_status(
|
||||
status: &ServiceStatusHandle,
|
||||
state: ServiceState,
|
||||
failed: bool,
|
||||
) -> windows_service::Result<()> {
|
||||
status.set_service_status(ServiceStatus {
|
||||
service_type: ServiceType::OWN_PROCESS,
|
||||
current_state: state,
|
||||
controls_accepted: match state {
|
||||
ServiceState::Running | ServiceState::Paused => {
|
||||
ServiceControlAccept::STOP
|
||||
| ServiceControlAccept::SHUTDOWN
|
||||
| ServiceControlAccept::PAUSE_CONTINUE
|
||||
}
|
||||
_ => ServiceControlAccept::empty(),
|
||||
},
|
||||
exit_code: if failed {
|
||||
ServiceExitCode::ServiceSpecific(1)
|
||||
} else {
|
||||
ServiceExitCode::Win32(0)
|
||||
},
|
||||
checkpoint: 0,
|
||||
wait_hint: Duration::from_secs(30),
|
||||
process_id: None,
|
||||
})
|
||||
}
|
||||
@@ -1,160 +0,0 @@
|
||||
use rama::error::BoxError;
|
||||
use rama::tls::boring::core::bn::BigNum;
|
||||
use rama::tls::boring::core::ecdsa::EcdsaSig;
|
||||
use rama::tls::boring::core::sha::sha256;
|
||||
use rcgen::{Error, PublicKeyData, SignatureAlgorithm, SigningKey, PKCS_ECDSA_P256_SHA256};
|
||||
use windows::core::{Owned, Result as WinResult, HSTRING};
|
||||
use windows::Win32::Foundation::{NTE_BAD_KEY, NTE_BAD_KEYSET};
|
||||
use windows::Win32::Security::Cryptography::*;
|
||||
|
||||
const KEY_NAME: &str = "Strix Firewall CA";
|
||||
|
||||
/// A P-256 key held by the TPM. Signing asks the TPM to sign, so the private key never leaves it.
|
||||
pub struct CaKey {
|
||||
// Fields drop in order, so the key handle closes before its provider's.
|
||||
key_handle: Owned<NCRYPT_KEY_HANDLE>,
|
||||
_provider_handle: Owned<NCRYPT_PROV_HANDLE>,
|
||||
/// 0x04 || X || Y, the form rcgen writes into a certificate's SubjectPublicKeyInfo.
|
||||
public_point: Vec<u8>,
|
||||
}
|
||||
|
||||
impl CaKey {
|
||||
/// A machine key, so the service and an elevated installer share it.
|
||||
pub fn load_or_create() -> Result<Self, BoxError> {
|
||||
match open_key(KEY_NAME, NCRYPT_MACHINE_KEY_FLAG)? {
|
||||
Some(key) => Ok(key),
|
||||
None => Ok(create_key(KEY_NAME, NCRYPT_MACHINE_KEY_FLAG)?),
|
||||
}
|
||||
}
|
||||
|
||||
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>());
|
||||
create_key(&name, NCRYPT_FLAGS(0))
|
||||
}
|
||||
|
||||
/// Deletes the key from the TPM, not just this handle to it.
|
||||
pub fn delete_from_tpm(mut self) -> WinResult<()> {
|
||||
// NCryptDeleteKey also frees the handle, so the Owned mustn't free it again.
|
||||
let key_handle = std::mem::take(&mut *self.key_handle);
|
||||
unsafe { NCryptDeleteKey(key_handle, 0) }
|
||||
}
|
||||
|
||||
/// Takes both handles and reads the key's public point once, for rcgen.
|
||||
fn from_handles(
|
||||
provider_handle: Owned<NCRYPT_PROV_HANDLE>,
|
||||
key_handle: Owned<NCRYPT_KEY_HANDLE>,
|
||||
) -> WinResult<Self> {
|
||||
// A BCRYPT_ECCKEY_BLOB header, then X and Y.
|
||||
const HEADER_LEN: usize = size_of::<BCRYPT_ECCKEY_BLOB>();
|
||||
let mut blob = [0u8; HEADER_LEN + 64];
|
||||
let mut blob_len = 0;
|
||||
unsafe {
|
||||
NCryptExportKey(
|
||||
*key_handle,
|
||||
None,
|
||||
BCRYPT_ECCPUBLIC_BLOB,
|
||||
None,
|
||||
Some(&mut blob),
|
||||
&mut blob_len,
|
||||
NCRYPT_FLAGS(0),
|
||||
)?
|
||||
};
|
||||
let (header, x_and_y) = blob.split_at(HEADER_LEN);
|
||||
let is_p256 = header[..4] == BCRYPT_ECDSA_PUBLIC_P256_MAGIC.to_le_bytes();
|
||||
if !is_p256 || blob_len as usize != blob.len() {
|
||||
return Err(windows::core::Error::new(NTE_BAD_KEY, "key is not an ECDSA P-256 key"));
|
||||
}
|
||||
let public_point = [&[0x04], x_and_y].concat();
|
||||
Ok(CaKey { key_handle, _provider_handle: provider_handle, public_point })
|
||||
}
|
||||
}
|
||||
|
||||
impl PublicKeyData for CaKey {
|
||||
fn der_bytes(&self) -> &[u8] {
|
||||
&self.public_point
|
||||
}
|
||||
|
||||
fn algorithm(&self) -> &'static SignatureAlgorithm {
|
||||
&PKCS_ECDSA_P256_SHA256
|
||||
}
|
||||
}
|
||||
|
||||
impl SigningKey for CaKey {
|
||||
fn sign(&self, msg: &[u8]) -> Result<Vec<u8>, Error> {
|
||||
let mut r_and_s = [0u8; 64];
|
||||
let mut signature_len = 0;
|
||||
let signed = unsafe {
|
||||
NCryptSignHash(
|
||||
*self.key_handle,
|
||||
None,
|
||||
&sha256(msg),
|
||||
Some(&mut r_and_s),
|
||||
&mut signature_len,
|
||||
NCRYPT_SILENT_FLAG,
|
||||
)
|
||||
};
|
||||
signed.map_err(|_| Error::RemoteKeyError)?;
|
||||
// NCrypt returns r || s, each half the length; X.509 wants DER SEQUENCE { r, s }.
|
||||
let (r, s) = r_and_s[..signature_len as usize].split_at(signature_len as usize / 2);
|
||||
let der = BigNum::from_slice(r)
|
||||
.and_then(|r| EcdsaSig::from_private_components(r, BigNum::from_slice(s)?))
|
||||
.and_then(|signature| signature.to_der());
|
||||
der.map_err(|_| Error::RemoteKeyError)
|
||||
}
|
||||
}
|
||||
|
||||
/// `None` if the TPM holds no key by that name.
|
||||
/// `scope` is `NCRYPT_MACHINE_KEY_FLAG`, or empty for the current user's keys.
|
||||
fn open_key(name: &str, scope: NCRYPT_FLAGS) -> WinResult<Option<CaKey>> {
|
||||
let provider_handle = open_tpm_provider()?;
|
||||
let mut key_handle = NCRYPT_KEY_HANDLE::default();
|
||||
let opened = unsafe {
|
||||
NCryptOpenKey(
|
||||
*provider_handle,
|
||||
&mut key_handle,
|
||||
&HSTRING::from(name),
|
||||
CERT_KEY_SPEC::default(), // legacy, unused by the TPM provider
|
||||
scope | NCRYPT_SILENT_FLAG,
|
||||
)
|
||||
};
|
||||
match opened {
|
||||
Err(error) if error.code() == NTE_BAD_KEYSET => Ok(None),
|
||||
Err(error) => Err(error),
|
||||
Ok(()) => CaKey::from_handles(provider_handle, unsafe { Owned::new(key_handle) }).map(Some),
|
||||
}
|
||||
}
|
||||
|
||||
/// Generates the key inside the TPM, which never lets it out.
|
||||
fn create_key(name: &str, scope: NCRYPT_FLAGS) -> WinResult<CaKey> {
|
||||
let provider_handle = open_tpm_provider()?;
|
||||
let mut key_handle = NCRYPT_KEY_HANDLE::default();
|
||||
unsafe {
|
||||
NCryptCreatePersistedKey(
|
||||
*provider_handle,
|
||||
&mut key_handle,
|
||||
NCRYPT_ECDSA_P256_ALGORITHM,
|
||||
&HSTRING::from(name),
|
||||
CERT_KEY_SPEC::default(), // legacy, unused by the TPM provider
|
||||
scope,
|
||||
)?
|
||||
};
|
||||
let key_handle = unsafe { Owned::new(key_handle) };
|
||||
// Until finalized the key is only a handle; this generates and stores it.
|
||||
unsafe { NCryptFinalizeKey(*key_handle, NCRYPT_SILENT_FLAG)? };
|
||||
CaKey::from_handles(provider_handle, key_handle)
|
||||
}
|
||||
|
||||
/// The Microsoft Platform Crypto Provider, which keeps its keys in the TPM.
|
||||
fn open_tpm_provider() -> WinResult<Owned<NCRYPT_PROV_HANDLE>> {
|
||||
let mut provider_handle = NCRYPT_PROV_HANDLE::default();
|
||||
unsafe { NCryptOpenStorageProvider(&mut provider_handle, MS_PLATFORM_CRYPTO_PROVIDER, 0)? };
|
||||
Ok(unsafe { Owned::new(provider_handle) })
|
||||
}
|
||||
@@ -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,
|
||||
}
|
||||
}
|
||||
@@ -72,9 +72,6 @@ pub async fn screen(url: &str, firewall: &Firewall) -> Option<String> {
|
||||
Some((_, Verdict::Deny(reason))) => {
|
||||
Some(format!("{} {reason}", pkg.label()))
|
||||
}
|
||||
Some((filter, Verdict::Unknown(e))) if !firewall.config.fail_open => {
|
||||
Some(format!("{} could not be checked by {filter} ({e})", pkg.label()))
|
||||
}
|
||||
_ => None,
|
||||
}
|
||||
}
|
||||
@@ -1,6 +1,6 @@
|
||||
use crate::http::{blocked, reply, text};
|
||||
use crate::policies::{self, Check, Decision};
|
||||
use crate::{telemetry, Firewall, FirewallConfig};
|
||||
use crate::{Firewall, FirewallConfig};
|
||||
use rama::http::body::util::BodyExt;
|
||||
use rama::http::client::EasyHttpWebClient;
|
||||
use rama::http::header::CONTENT_TYPE;
|
||||
@@ -19,7 +19,6 @@ pub fn serve(config: FirewallConfig) -> std::io::Result<()> {
|
||||
bound.set_nonblocking(true)?;
|
||||
crate::runtime()?.block_on(async move {
|
||||
let firewall = Arc::new(Firewall::new(config));
|
||||
telemetry::heartbeat();
|
||||
let exec = Executor::default();
|
||||
let listener = TcpListener::try_from_std_tcp_listener(bound, exec.clone())?;
|
||||
let server = HttpServer::auto(exec).service(service_fn(move |req: Request| {
|
||||
@@ -45,7 +44,6 @@ async fn screen(target: String, firewall: &Firewall) -> Response {
|
||||
}
|
||||
Decision::Block { eco, pkg, filter, reason } => {
|
||||
let reason = format!("{} {reason}", pkg.label());
|
||||
telemetry::screened_package(eco, &pkg, Some(&reason));
|
||||
warn!(%eco, %filter, "blocked by firewall: {reason}");
|
||||
blocked(&reason)
|
||||
}
|
||||
@@ -53,11 +51,9 @@ async fn screen(target: String, firewall: &Firewall) -> Response {
|
||||
match &check {
|
||||
Check::NoPackage => {}
|
||||
Check::Allowed(pkg) => {
|
||||
telemetry::screened_package(target.eco, pkg, None);
|
||||
info!(eco = %target.eco, pkg = %pkg.label(), "cleared by every filter")
|
||||
}
|
||||
Check::Unverified { pkg, filter, error } => {
|
||||
telemetry::screened_package(target.eco, pkg, None);
|
||||
info!(pkg = %pkg.label(), %filter, %error, "filter could not check, allowing")
|
||||
}
|
||||
}
|
||||
|
||||
+7
-20
@@ -1,11 +1,10 @@
|
||||
use crate::policies::Package;
|
||||
use crate::{Firewall, FirewallConfig};
|
||||
use rama::http::client::EasyHttpWebClient;
|
||||
use rama::http::header::CONTENT_TYPE;
|
||||
use rama::http::service::client::HttpClientExt;
|
||||
use rama::rt::blocking::Runtime;
|
||||
use serde_json::{json, Value};
|
||||
use std::sync::{LazyLock, Mutex, OnceLock};
|
||||
use std::sync::{LazyLock, Mutex};
|
||||
use std::time::Duration;
|
||||
use time::format_description::well_known::Rfc3339;
|
||||
use time::OffsetDateTime;
|
||||
@@ -30,40 +29,29 @@ static TELEMETRY: LazyLock<Option<Telemetry>> = LazyLock::new(|| {
|
||||
})
|
||||
});
|
||||
|
||||
/// How the firewall is running: "extension", "service", "wrapper" or "proxy".
|
||||
static MODE: OnceLock<&'static str> = OnceLock::new();
|
||||
|
||||
struct Telemetry {
|
||||
key: &'static str,
|
||||
session: String,
|
||||
events: Mutex<Vec<Value>>,
|
||||
}
|
||||
|
||||
pub fn screened(firewall: &Firewall, url: &str, reason: Option<&str>) {
|
||||
pub fn screened(firewall: &Firewall, url: &str, blocked: bool) {
|
||||
if TELEMETRY.is_none() {
|
||||
return;
|
||||
}
|
||||
let Some((registry, rest)) = firewall.match_on(url, |r| r.upstream) else {
|
||||
return;
|
||||
};
|
||||
if let Some(pkg) = firewall.resolve(registry, rest).pkg {
|
||||
screened_package(registry.eco, &pkg, reason);
|
||||
}
|
||||
}
|
||||
|
||||
pub fn screened_package(eco: &str, pkg: &Package, reason: Option<&str>) {
|
||||
let mut properties = json!({ "eco": eco, "blocked": reason.is_some() });
|
||||
if let Some(reason) = reason {
|
||||
let Some(pkg) = firewall.resolve(registry, rest).pkg else {
|
||||
return;
|
||||
};
|
||||
let mut properties = json!({ "eco": registry.eco, "blocked": blocked });
|
||||
if blocked {
|
||||
properties["package"] = pkg.label().into();
|
||||
properties["reason"] = reason.into();
|
||||
}
|
||||
record("package_screened", properties);
|
||||
}
|
||||
|
||||
pub fn set_mode(mode: &'static str) {
|
||||
MODE.set(mode).ok();
|
||||
}
|
||||
|
||||
pub fn error(kind: &'static str) {
|
||||
record("error", json!({ "kind": kind }));
|
||||
}
|
||||
@@ -93,7 +81,6 @@ pub fn flush() {
|
||||
fn record(event: &str, mut properties: Value) {
|
||||
let Some(telemetry) = &*TELEMETRY else { return };
|
||||
properties["distinct_id"] = telemetry.session.clone().into();
|
||||
properties["mode"] = MODE.get().copied().into();
|
||||
properties["os"] = std::env::consts::OS.into();
|
||||
properties["arch"] = std::env::consts::ARCH.into();
|
||||
properties["$process_person_profile"] = false.into();
|
||||
|
||||
+1
-27
@@ -1,6 +1,6 @@
|
||||
use firewall::config::path;
|
||||
use firewall::policies::filters::consult;
|
||||
use firewall::policies::{screen, Package};
|
||||
use firewall::policies::Package;
|
||||
use firewall::{Firewall, FirewallConfig};
|
||||
|
||||
#[test]
|
||||
@@ -21,23 +21,6 @@ fn the_config_lives_under_the_config_directory() {
|
||||
assert!(path.ends_with("config.json"), "{}", path.display());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn a_later_file_wins_and_allow_lists_add_up() {
|
||||
let dir = std::env::temp_dir().join(format!("firewall-layers-{}", std::process::id()));
|
||||
std::fs::create_dir_all(&dir).expect("temp dir");
|
||||
let user = dir.join("user.json");
|
||||
let system = dir.join("system.json");
|
||||
std::fs::write(&user, r#"{"min_age_hours": 1, "fail_open": false, "allow": {"npm": [{"name": "a"}]}}"#).expect("write");
|
||||
std::fs::write(&system, r#"{"min_age_hours": 24, "allow": {"npm": [{"name": "b"}]}}"#).expect("write");
|
||||
let missing = dir.join("missing.json");
|
||||
let config = FirewallConfig::load_from(&[user, system, missing]).expect("loads");
|
||||
std::fs::remove_dir_all(&dir).ok();
|
||||
assert_eq!(config.min_age_hours, 24);
|
||||
assert!(!config.fail_open);
|
||||
let names: Vec<&str> = config.allow["npm"].iter().map(|p| p.name.as_str()).collect();
|
||||
assert_eq!(names, ["a", "b"]);
|
||||
}
|
||||
|
||||
#[tokio::test]
|
||||
async fn an_allowed_version_skips_the_filters() {
|
||||
// An unreachable denylist would otherwise leave the package unchecked.
|
||||
@@ -48,12 +31,3 @@ async fn an_allowed_version_skips_the_filters() {
|
||||
assert!(consult(&firewall, registry, &pkg("0.20.0")).await.is_none());
|
||||
assert!(consult(&firewall, registry, &pkg("0.21.0")).await.is_some());
|
||||
}
|
||||
|
||||
#[tokio::test]
|
||||
async fn failing_closed_blocks_what_could_not_be_checked() {
|
||||
let config = r#"{"fail_open": false, "denylist": {"base": "http://127.0.0.1:1"}}"#;
|
||||
let firewall = Firewall::new(serde_json::from_str(config).expect("parses"));
|
||||
let url = "https://registry.npmjs.org/left-pad/-/left-pad-1.3.0.tgz";
|
||||
let blocked = screen(url, &firewall).await.unwrap_or_default();
|
||||
assert!(blocked.contains("could not be checked"), "{blocked:?}");
|
||||
}
|
||||
@@ -1,21 +0,0 @@
|
||||
#![cfg(windows)]
|
||||
|
||||
use firewall::mitm::CertificateAuthority;
|
||||
use firewall::os::windows::CaKey;
|
||||
use rcgen::PublicKeyData;
|
||||
|
||||
/// Skipped on machines without a TPM.
|
||||
#[test]
|
||||
fn key_signs_a_verifiable_ca() {
|
||||
let key = match CaKey::create_test_key() {
|
||||
Ok(key) => key,
|
||||
Err(error) => return eprintln!("skipping, no TPM key: {error}"),
|
||||
};
|
||||
let ca = CertificateAuthority::generate(&["registry.npmjs.org"], &key);
|
||||
let spki = key.subject_public_key_info();
|
||||
key.delete_from_tpm().expect("delete the test key");
|
||||
let ca = ca.expect("mint a ca");
|
||||
let public = ca.crt.public_key().expect("ca public key");
|
||||
assert!(ca.crt.verify(&public).expect("verify the ca"));
|
||||
assert_eq!(public.public_key_to_der().unwrap(), spki);
|
||||
}
|
||||
@@ -1,167 +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 $(sys.BUILDARCH) = arm64 ?>
|
||||
<?define PlatformProgramFilesFolder = "ProgramFiles64Folder" ?>
|
||||
<?else ?>
|
||||
<?define PlatformProgramFilesFolder = "ProgramFilesFolder" ?>
|
||||
<?endif ?>
|
||||
|
||||
<Wix xmlns='http://schemas.microsoft.com/wix/2006/wi'>
|
||||
|
||||
<Product
|
||||
Id='*'
|
||||
Name='strix-firewall'
|
||||
UpgradeCode='D944C2F6-BF55-4B21-A60E-1BBDB1A66293'
|
||||
Manufacturer='Strix'
|
||||
Language='1033'
|
||||
Codepage='1252'
|
||||
Version='$(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>
|
||||
</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'/>
|
||||
|
||||
<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'/>
|
||||
<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>
|
||||
</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>
|
||||
</UI>
|
||||
</Product>
|
||||
|
||||
</Wix>
|
||||
+1
-3
@@ -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"]
|
||||
Binary file not shown.
|
Before Width: | Height: | Size: 3.3 KiB |
@@ -1,24 +0,0 @@
|
||||
{
|
||||
"fill" : {
|
||||
"solid" : "srgb:0.07000,0.07000,0.07000,1.00000"
|
||||
},
|
||||
"groups" : [
|
||||
{
|
||||
"layers" : [
|
||||
{
|
||||
"image-name" : "logo.png",
|
||||
"name" : "logo",
|
||||
"position" : {
|
||||
"scale" : 1.8,
|
||||
"translation-in-points" : [0, 0]
|
||||
}
|
||||
}
|
||||
]
|
||||
}
|
||||
],
|
||||
"supported-platforms" : {
|
||||
"squares" : [
|
||||
"macOS"
|
||||
]
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,68 @@
|
||||
{
|
||||
"images": [
|
||||
{
|
||||
"idiom": "mac",
|
||||
"size": "16x16",
|
||||
"scale": "1x",
|
||||
"filename": "icon_16.png"
|
||||
},
|
||||
{
|
||||
"idiom": "mac",
|
||||
"size": "16x16",
|
||||
"scale": "2x",
|
||||
"filename": "icon_32.png"
|
||||
},
|
||||
{
|
||||
"idiom": "mac",
|
||||
"size": "32x32",
|
||||
"scale": "1x",
|
||||
"filename": "icon_32.png"
|
||||
},
|
||||
{
|
||||
"idiom": "mac",
|
||||
"size": "32x32",
|
||||
"scale": "2x",
|
||||
"filename": "icon_64.png"
|
||||
},
|
||||
{
|
||||
"idiom": "mac",
|
||||
"size": "128x128",
|
||||
"scale": "1x",
|
||||
"filename": "icon_128.png"
|
||||
},
|
||||
{
|
||||
"idiom": "mac",
|
||||
"size": "128x128",
|
||||
"scale": "2x",
|
||||
"filename": "icon_256.png"
|
||||
},
|
||||
{
|
||||
"idiom": "mac",
|
||||
"size": "256x256",
|
||||
"scale": "1x",
|
||||
"filename": "icon_256.png"
|
||||
},
|
||||
{
|
||||
"idiom": "mac",
|
||||
"size": "256x256",
|
||||
"scale": "2x",
|
||||
"filename": "icon_512.png"
|
||||
},
|
||||
{
|
||||
"idiom": "mac",
|
||||
"size": "512x512",
|
||||
"scale": "1x",
|
||||
"filename": "icon_512.png"
|
||||
},
|
||||
{
|
||||
"idiom": "mac",
|
||||
"size": "512x512",
|
||||
"scale": "2x",
|
||||
"filename": "icon_1024.png"
|
||||
}
|
||||
],
|
||||
"info": {
|
||||
"author": "xcode",
|
||||
"version": 1
|
||||
}
|
||||
}
|
||||
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@@ -4,4 +4,5 @@ enum FirewallIDs {
|
||||
static let appBundleID = "com.usestrix.firewall"
|
||||
static let extensionBundleID = "com.usestrix.firewall.extension"
|
||||
static let caCommonName = "Strix Firewall"
|
||||
static let managedCaCommonName = "Strix Firewall Managed"
|
||||
}
|
||||
@@ -114,22 +114,6 @@ final class FirewallModel: NSObject, ObservableObject {
|
||||
|
||||
completed = true
|
||||
log("Setup complete")
|
||||
offerRestart()
|
||||
}
|
||||
|
||||
/// Apps opened before setup, terminals included, only get the environment the env agent sets once reopened.
|
||||
private func offerRestart() {
|
||||
let alert = NSAlert()
|
||||
alert.messageText = "Restart to finish setting up"
|
||||
alert.informativeText = "Apps that were already open, such as terminals, can't install packages until they're reopened. Restarting reopens them all."
|
||||
alert.addButton(withTitle: "Restart")
|
||||
alert.addButton(withTitle: "Later")
|
||||
NSApp.activate(ignoringOtherApps: true)
|
||||
guard alert.runModal() == .alertFirstButtonReturn else { return }
|
||||
let osascript = Process()
|
||||
osascript.executableURL = URL(fileURLWithPath: "/usr/bin/osascript")
|
||||
osascript.arguments = ["-e", "tell application \"loginwindow\" to «event aevtrest»"]
|
||||
try? osascript.run()
|
||||
}
|
||||
|
||||
/// After the admin gate, every stage runs even if an earlier one fails, so a partial uninstall never strands the rest.
|
||||
@@ -280,10 +264,10 @@ 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 {
|
||||
|
||||
@@ -34,7 +34,11 @@ enum TrustStore {
|
||||
return certificate
|
||||
}
|
||||
|
||||
/// The extension only uses a managed CA after checking that it chains to a root the MDM trusts.
|
||||
static func isTrusted(_ certificate: SecCertificate) -> Bool {
|
||||
var name: CFString?
|
||||
if SecCertificateCopyCommonName(certificate, &name) == errSecSuccess,
|
||||
name as String? == FirewallIDs.managedCaCommonName { return true }
|
||||
var settings: CFArray?
|
||||
return SecTrustSettingsCopyTrustSettings(certificate, .admin, &settings) == errSecSuccess
|
||||
}
|
||||
|
||||
@@ -0,0 +1,24 @@
|
||||
# Deploying with MDM
|
||||
|
||||
On a managed Mac the firewall can use a CA your MDM enrolls instead of minting its own, so users
|
||||
need no admin rights and see no trust prompt. Each Mac still has its own key in its Secure Enclave;
|
||||
your PKI signs its certificate.
|
||||
|
||||
Push one device-channel profile with:
|
||||
|
||||
1. **Certificate** (`com.apple.security.root`): your root CA.
|
||||
2. **ACME Certificate** (`com.apple.security.acme`), macOS 14 or later:
|
||||
- `KeyType` `ECSECPrimeRandom`, `KeySize` `256`, `HardwareBound` `true`, `Attest` `true`
|
||||
- `Subject` `[[["CN", "Strix Firewall Managed"]]]`; the extension finds the identity by this name
|
||||
- `AllowAllAppsAccess` `true`, so the extension can sign with the key
|
||||
3. **System Extensions**: allow `com.usestrix.firewall.extension` for the Strix team ID.
|
||||
|
||||
Your ACME server must issue the enrolled certificate as a CA, not a leaf:
|
||||
|
||||
- basic constraints `CA:TRUE, pathlen:0` and key usage `keyCertSign`
|
||||
- critical name constraints permitting only the screened hosts: `registry.npmjs.org`, `pypi.org`,
|
||||
`files.pythonhosted.org`, `index.crates.io`, `static.crates.io`, `crates.io`,
|
||||
`proxy.golang.org`, `rubygems.org`
|
||||
|
||||
The extension checks the certificate chains to a trusted root before using it. Install the profile
|
||||
before the firewall: without a managed CA the extension mints its own, which needs an admin to trust.
|
||||
+1
-1
@@ -55,7 +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 \
|
||||
|
||||
+4
-4
@@ -118,14 +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"
|
||||
cargo build --bin firewall-uninstall --target aarch64-apple-darwin $([ "$CONFIGURATION" = Debug ] || echo --release)
|
||||
cp "target/aarch64-apple-darwin/$CARGO_PROFILE/firewall-uninstall" "$TARGET_BUILD_DIR/$EXECUTABLE_FOLDER_PATH/"
|
||||
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/"
|
||||
Reference in new issue
Block a user