mirror of
https://github.com/rosenpass/rosenpass.git
synced 2025-12-05 20:40:02 -08:00
major rewrite of application server & frontend
- adds TOML based configuation files - with example configuratios in config-examples - reimplments arcane CLI argument parser as automaton - adds a new CLI focused arround configuration files - moves all file utility stuff from `main.rs` to `util.rs` - moves all AppServer stuff to dedicated `app_server.rs` - add mio for multi-listen-socket support (should fix #27) - consistency: rename private to secret
This commit is contained in:
240
Cargo.lock
generated
240
Cargo.lock
generated
@@ -32,6 +32,46 @@ dependencies = [
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"memchr",
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]
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||||
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|
||||
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|
||||
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"indexmap",
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@@ -203,6 +278,12 @@ dependencies = [
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"os_str_bytes",
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@@ -590,12 +692,6 @@ dependencies = [
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"adler",
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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[[package]]
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||||
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||||
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||||
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|
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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|
||||
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||||
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||||
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||||
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||||
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|
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||||
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||||
[[package]]
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||||
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||||
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||||
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||||
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||||
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||||
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||||
"winapi-util",
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||||
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||||
[[package]]
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||||
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||||
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|
||||
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|
||||
"quote",
|
||||
"syn",
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||||
"syn 1.0.109",
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||||
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||||
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||||
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||||
[[package]]
|
||||
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[[package]]
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||||
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||||
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||||
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||||
@@ -16,7 +16,6 @@ harness = false
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||||
[dependencies]
|
||||
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||||
base64 = "0.13.0"
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||||
clap = { version = "3.0.0", features = ["yaml"] }
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||||
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||||
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||||
paste = "1.0.11"
|
||||
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|
||||
env_logger = { version = "0.10.0", optional = true }
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||||
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|
||||
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||||
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|
||||
mio = { version = "0.8.6", features = ["net", "os-poll"] }
|
||||
|
||||
[build-dependencies]
|
||||
anyhow = "1.0.70"
|
||||
|
||||
2
config-examples/.gitignore
vendored
Normal file
2
config-examples/.gitignore
vendored
Normal file
@@ -0,0 +1,2 @@
|
||||
peer-*-*-key
|
||||
peer-*-out
|
||||
18
config-examples/peer-a-config.toml
Normal file
18
config-examples/peer-a-config.toml
Normal file
@@ -0,0 +1,18 @@
|
||||
public_key = "peer-a-public-key"
|
||||
secret_key = "peer-a-secret-key"
|
||||
listen = ["[::]:10001"]
|
||||
verbosity = "Quiet"
|
||||
|
||||
[[peers]]
|
||||
public_key = "peer-b-public-key"
|
||||
endpoint = "localhost:10002"
|
||||
key_out = "peer-a-rp-out-key"
|
||||
# exchange_command = [
|
||||
# "wg",
|
||||
# "set",
|
||||
# "wg0",
|
||||
# "peer",
|
||||
# "<PEER_ID>",
|
||||
# "preshared-key",
|
||||
# "/dev/stdin",
|
||||
# ]
|
||||
18
config-examples/peer-b-config.toml
Normal file
18
config-examples/peer-b-config.toml
Normal file
@@ -0,0 +1,18 @@
|
||||
public_key = "peer-b-public-key"
|
||||
secret_key = "peer-b-secret-key"
|
||||
listen = ["[::]:10002"]
|
||||
verbosity = "Quiet"
|
||||
|
||||
[[peers]]
|
||||
public_key = "peer-a-public-key"
|
||||
endpoint = "localhost:10001"
|
||||
key_out = "peer-b-rp-out-key"
|
||||
# exchange_command = [
|
||||
# "wg",
|
||||
# "set",
|
||||
# "wg0",
|
||||
# "peer",
|
||||
# "<PEER_ID>",
|
||||
# "preshared-key",
|
||||
# "/dev/stdin",
|
||||
# ]
|
||||
442
src/app_server.rs
Normal file
442
src/app_server.rs
Normal file
@@ -0,0 +1,442 @@
|
||||
use anyhow::bail;
|
||||
|
||||
use anyhow::Result;
|
||||
use log::{error, info};
|
||||
use mio::Interest;
|
||||
use mio::Token;
|
||||
|
||||
use std::io::Write;
|
||||
|
||||
use std::io::ErrorKind;
|
||||
use std::net::Ipv4Addr;
|
||||
use std::net::Ipv6Addr;
|
||||
use std::net::SocketAddr;
|
||||
use std::net::SocketAddrV4;
|
||||
use std::net::SocketAddrV6;
|
||||
use std::path::PathBuf;
|
||||
use std::process::Command;
|
||||
use std::process::Stdio;
|
||||
use std::time::Duration;
|
||||
|
||||
use crate::util::fopen_w;
|
||||
use crate::{
|
||||
config::Verbosity,
|
||||
protocol::{CryptoServer, MsgBuf, PeerPtr, SPk, SSk, SymKey, Timing},
|
||||
util::{b64_writer, fmt_b64},
|
||||
};
|
||||
|
||||
#[derive(Default, Debug)]
|
||||
pub struct AppPeer {
|
||||
pub outfile: Option<PathBuf>,
|
||||
pub outwg: Option<WireguardOut>, // TODO make this a generic command
|
||||
pub tx_addr: Option<SocketAddr>,
|
||||
}
|
||||
|
||||
#[derive(Default, Debug)]
|
||||
pub struct WireguardOut {
|
||||
// impl KeyOutput
|
||||
pub dev: String,
|
||||
pub pk: String,
|
||||
pub extra_params: Vec<String>,
|
||||
}
|
||||
|
||||
/// Holds the state of the application, namely the external IO
|
||||
///
|
||||
/// Responsible for file IO, network IO
|
||||
// TODO add user control via unix domain socket and stdin/stdout
|
||||
#[derive(Debug)]
|
||||
pub struct AppServer {
|
||||
pub crypt: CryptoServer,
|
||||
pub sockets: Vec<mio::net::UdpSocket>,
|
||||
pub events: mio::Events,
|
||||
pub mio_poll: mio::Poll,
|
||||
pub peers: Vec<AppPeer>,
|
||||
pub verbosity: Verbosity,
|
||||
pub all_sockets_drained: bool,
|
||||
}
|
||||
|
||||
/// Index based pointer to a Peer
|
||||
#[derive(Debug)]
|
||||
pub struct AppPeerPtr(pub usize);
|
||||
|
||||
impl AppPeerPtr {
|
||||
/// Takes an index based handle and returns the actual peer
|
||||
pub fn lift(p: PeerPtr) -> Self {
|
||||
Self(p.0)
|
||||
}
|
||||
|
||||
/// Returns an index based handle to one Peer
|
||||
pub fn lower(&self) -> PeerPtr {
|
||||
PeerPtr(self.0)
|
||||
}
|
||||
|
||||
pub fn get_app<'a>(&self, srv: &'a AppServer) -> &'a AppPeer {
|
||||
&srv.peers[self.0]
|
||||
}
|
||||
|
||||
pub fn get_app_mut<'a>(&self, srv: &'a mut AppServer) -> &'a mut AppPeer {
|
||||
&mut srv.peers[self.0]
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
pub enum AppPollResult {
|
||||
DeleteKey(AppPeerPtr),
|
||||
SendInitiation(AppPeerPtr),
|
||||
SendRetransmission(AppPeerPtr),
|
||||
ReceivedMessage(usize, SocketAddr),
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
pub enum KeyOutputReason {
|
||||
Exchanged,
|
||||
Stale,
|
||||
}
|
||||
|
||||
impl AppServer {
|
||||
pub fn new(
|
||||
sk: SSk,
|
||||
pk: SPk,
|
||||
addrs: Vec<SocketAddr>,
|
||||
verbosity: Verbosity,
|
||||
) -> anyhow::Result<Self> {
|
||||
// setup mio
|
||||
let mio_poll = mio::Poll::new()?;
|
||||
let events = mio::Events::with_capacity(8);
|
||||
|
||||
// bind each SocketAddr to a socket
|
||||
let maybe_sockets: Result<Vec<_>, _> =
|
||||
addrs.into_iter().map(mio::net::UdpSocket::bind).collect();
|
||||
let mut sockets = maybe_sockets?;
|
||||
|
||||
// if there is no socket, just listen to anything
|
||||
if sockets.is_empty() {
|
||||
// port 0 means the OS can pick any free port
|
||||
let port = 0;
|
||||
|
||||
let ipv4_any = SocketAddr::V4(SocketAddrV4::new(Ipv4Addr::new(0, 0, 0, 0), port));
|
||||
|
||||
let ipv6_any = SocketAddr::V6(SocketAddrV6::new(
|
||||
Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0),
|
||||
port,
|
||||
0,
|
||||
0,
|
||||
));
|
||||
|
||||
// bind to IPv4
|
||||
sockets.push(mio::net::UdpSocket::bind(ipv4_any)?);
|
||||
|
||||
// and try to bind to IPv6, just in case
|
||||
match mio::net::UdpSocket::bind(ipv6_any) {
|
||||
Ok(socket) => sockets.push(socket),
|
||||
Err(e) if e.kind() == ErrorKind::AddrInUse => { /* shrugs, seems to be a IPv4/IPv6 dual stack OS */
|
||||
}
|
||||
Err(e) => return Err(e.into()),
|
||||
}
|
||||
}
|
||||
|
||||
// register all sockets to mio
|
||||
for (i, socket) in sockets.iter_mut().enumerate() {
|
||||
mio_poll
|
||||
.registry()
|
||||
.register(socket, Token(i), Interest::READABLE)?;
|
||||
}
|
||||
|
||||
// TODO use mio::net::UnixStream together with std::os::unix::net::UnixStream for linux
|
||||
|
||||
Ok(Self {
|
||||
crypt: CryptoServer::new(sk, pk),
|
||||
peers: Vec::new(),
|
||||
verbosity,
|
||||
sockets,
|
||||
events,
|
||||
mio_poll,
|
||||
all_sockets_drained: false,
|
||||
})
|
||||
}
|
||||
|
||||
pub fn verbose(&self) -> bool {
|
||||
matches!(self.verbosity, Verbosity::Verbose)
|
||||
}
|
||||
|
||||
pub fn add_peer(
|
||||
&mut self,
|
||||
psk: Option<SymKey>,
|
||||
pk: SPk,
|
||||
outfile: Option<PathBuf>,
|
||||
outwg: Option<WireguardOut>,
|
||||
tx_addr: Option<SocketAddr>,
|
||||
) -> anyhow::Result<AppPeerPtr> {
|
||||
let PeerPtr(pn) = self.crypt.add_peer(psk, pk)?;
|
||||
assert!(pn == self.peers.len());
|
||||
self.peers.push(AppPeer {
|
||||
outfile,
|
||||
outwg,
|
||||
tx_addr,
|
||||
});
|
||||
Ok(AppPeerPtr(pn))
|
||||
}
|
||||
|
||||
pub fn listen_loop(&mut self) -> anyhow::Result<()> {
|
||||
const INIT_SLEEP: f64 = 0.01;
|
||||
const MAX_FAILURES: i32 = 10;
|
||||
let mut failure_cnt = 0;
|
||||
|
||||
loop {
|
||||
let msgs_processed = 0usize;
|
||||
let err = match self.event_loop() {
|
||||
Ok(()) => return Ok(()),
|
||||
Err(e) => e,
|
||||
};
|
||||
|
||||
// This should not happen…
|
||||
failure_cnt = if msgs_processed > 0 {
|
||||
0
|
||||
} else {
|
||||
failure_cnt + 1
|
||||
};
|
||||
let sleep = INIT_SLEEP * 2.0f64.powf(f64::from(failure_cnt - 1));
|
||||
let tries_left = MAX_FAILURES - (failure_cnt - 1);
|
||||
error!(
|
||||
"unexpected error after processing {} messages: {:?} {}",
|
||||
msgs_processed,
|
||||
err,
|
||||
err.backtrace()
|
||||
);
|
||||
if tries_left > 0 {
|
||||
error!("reinitializing networking in {sleep}! {tries_left} tries left.");
|
||||
std::thread::sleep(self.crypt.timebase.dur(sleep));
|
||||
continue;
|
||||
}
|
||||
|
||||
bail!("too many network failures");
|
||||
}
|
||||
}
|
||||
|
||||
pub fn event_loop(&mut self) -> anyhow::Result<()> {
|
||||
let (mut rx, mut tx) = (MsgBuf::zero(), MsgBuf::zero());
|
||||
|
||||
/// if socket address for peer is known, call closure
|
||||
/// assumes that closure leaves a message in `tx`
|
||||
/// assumes that closure returns the length of message in bytes
|
||||
macro_rules! tx_maybe_with {
|
||||
($peer:expr, $fn:expr) => {
|
||||
attempt!({
|
||||
let p = $peer.get_app(self);
|
||||
if let Some(addr) = p.tx_addr {
|
||||
let len = $fn()?;
|
||||
self.try_send(&tx[..len], addr)?;
|
||||
}
|
||||
Ok(())
|
||||
})
|
||||
};
|
||||
}
|
||||
|
||||
loop {
|
||||
use crate::protocol::HandleMsgResult;
|
||||
use AppPollResult::*;
|
||||
use KeyOutputReason::*;
|
||||
match self.poll(&mut *rx)? {
|
||||
SendInitiation(peer) => tx_maybe_with!(peer, || self
|
||||
.crypt
|
||||
.initiate_handshake(peer.lower(), &mut *tx))?,
|
||||
SendRetransmission(peer) => tx_maybe_with!(peer, || self
|
||||
.crypt
|
||||
.retransmit_handshake(peer.lower(), &mut *tx))?,
|
||||
DeleteKey(peer) => self.output_key(peer, Stale, &SymKey::random())?,
|
||||
|
||||
ReceivedMessage(len, addr) => {
|
||||
match self.crypt.handle_msg(&rx[..len], &mut *tx) {
|
||||
Err(ref e) => {
|
||||
self.verbose().then(|| {
|
||||
info!(
|
||||
"error processing incoming message from {:?}: {:?} {}",
|
||||
addr,
|
||||
e,
|
||||
e.backtrace()
|
||||
);
|
||||
});
|
||||
}
|
||||
|
||||
Ok(HandleMsgResult {
|
||||
resp,
|
||||
exchanged_with,
|
||||
..
|
||||
}) => {
|
||||
if let Some(len) = resp {
|
||||
self.try_send(&tx[0..len], addr)?;
|
||||
}
|
||||
|
||||
if let Some(p) = exchanged_with {
|
||||
let ap = AppPeerPtr::lift(p);
|
||||
ap.get_app_mut(self).tx_addr = Some(addr);
|
||||
|
||||
// TODO: Maybe we should rather call the key "rosenpass output"?
|
||||
self.output_key(ap, Exchanged, &self.crypt.osk(p)?)?;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
pub fn output_key(
|
||||
&self,
|
||||
peer: AppPeerPtr,
|
||||
why: KeyOutputReason,
|
||||
key: &SymKey,
|
||||
) -> anyhow::Result<()> {
|
||||
let peerid = peer.lower().get(&self.crypt).pidt()?;
|
||||
let ap = peer.get_app(self);
|
||||
|
||||
if self.verbose() {
|
||||
let msg = match why {
|
||||
KeyOutputReason::Exchanged => "Exchanged key with peer",
|
||||
KeyOutputReason::Stale => "Erasing outdated key from peer",
|
||||
};
|
||||
info!("{} {}", msg, fmt_b64(&*peerid));
|
||||
}
|
||||
|
||||
if let Some(of) = ap.outfile.as_ref() {
|
||||
// This might leave some fragments of the secret on the stack;
|
||||
// in practice this is likely not a problem because the stack likely
|
||||
// will be overwritten by something else soon but this is not exactly
|
||||
// guaranteed. It would be possible to remedy this, but since the secret
|
||||
// data will linger in the linux page cache anyways with the current
|
||||
// implementation, going to great length to erase the secret here is
|
||||
// not worth it right now.
|
||||
b64_writer(fopen_w(of)?).write_all(key.secret())?;
|
||||
let why = match why {
|
||||
KeyOutputReason::Exchanged => "exchanged",
|
||||
KeyOutputReason::Stale => "stale",
|
||||
};
|
||||
|
||||
// this is intentionally writing to stdout instead of stderr, because
|
||||
// it is meant to allow external detection of a succesful key-exchange
|
||||
println!(
|
||||
"output-key peer {} key-file {of:?} {why}",
|
||||
fmt_b64(&*peerid)
|
||||
);
|
||||
}
|
||||
|
||||
if let Some(owg) = ap.outwg.as_ref() {
|
||||
let child = Command::new("wg")
|
||||
.arg("set")
|
||||
.arg(&owg.dev)
|
||||
.arg("peer")
|
||||
.arg(&owg.pk)
|
||||
.arg("preshared-key")
|
||||
.arg("/dev/stdin")
|
||||
.stdin(Stdio::piped())
|
||||
.args(&owg.extra_params)
|
||||
.spawn()?;
|
||||
b64_writer(child.stdin.unwrap()).write_all(key.secret())?;
|
||||
}
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
pub fn poll(&mut self, rx_buf: &mut [u8]) -> anyhow::Result<AppPollResult> {
|
||||
use crate::protocol::PollResult as C;
|
||||
use AppPollResult as A;
|
||||
loop {
|
||||
return Ok(match self.crypt.poll()? {
|
||||
C::DeleteKey(PeerPtr(no)) => A::DeleteKey(AppPeerPtr(no)),
|
||||
C::SendInitiation(PeerPtr(no)) => A::SendInitiation(AppPeerPtr(no)),
|
||||
C::SendRetransmission(PeerPtr(no)) => A::SendRetransmission(AppPeerPtr(no)),
|
||||
C::Sleep(timeout) => match self.try_recv(rx_buf, timeout)? {
|
||||
Some((len, addr)) => A::ReceivedMessage(len, addr),
|
||||
None => continue,
|
||||
},
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
/// Tries to receive a new message
|
||||
///
|
||||
/// - might wait for an duration up to `timeout`
|
||||
/// - returns immediately if an error occurs
|
||||
/// - returns immediately if a new message is received
|
||||
pub fn try_recv(
|
||||
&mut self,
|
||||
buf: &mut [u8],
|
||||
timeout: Timing,
|
||||
) -> anyhow::Result<Option<(usize, SocketAddr)>> {
|
||||
let timeout = Duration::from_secs_f64(timeout);
|
||||
|
||||
// if there is no time to wait on IO, well, then, lets not waste any time!
|
||||
if timeout.is_zero() {
|
||||
return Ok(None);
|
||||
}
|
||||
|
||||
// NOTE when using mio::Poll, there are some finickies (taken from
|
||||
// https://docs.rs/mio/latest/mio/struct.Poll.html):
|
||||
//
|
||||
// - poll() might return readiness, even if nothing is ready
|
||||
// - in this case, a WouldBlock error is returned from actual IO operations
|
||||
// - after receiving readiness for a source, it must be drained until a WouldBlock
|
||||
// is received
|
||||
//
|
||||
// This would ususally require us to maintain the drainage status of each socket;
|
||||
// a socket would only become drained when it returned WouldBlock and only
|
||||
// non-drained when receiving a readiness event from mio for it. Then, only the
|
||||
// ready sockets should be worked on, ideally without requiring an O(n) search
|
||||
// through all sockets for checking their drained status. However, our use-case
|
||||
// is primarily heaving one or two sockets (if IPv4 and IPv6 IF_ANY listen is
|
||||
// desired on a non-dual-stack OS), thus just checking every socket after any
|
||||
// readiness event seems to be good enough™ for now.
|
||||
|
||||
// only poll if we drained all sockets before
|
||||
if self.all_sockets_drained {
|
||||
self.mio_poll.poll(&mut self.events, Some(timeout))?;
|
||||
}
|
||||
|
||||
let mut would_block_count = 0;
|
||||
for socket in &mut self.sockets {
|
||||
match socket.recv_from(buf) {
|
||||
Ok(x) => {
|
||||
// at least one socket was not drained...
|
||||
self.all_sockets_drained = false;
|
||||
return Ok(Some(x));
|
||||
}
|
||||
Err(e) if e.kind() == ErrorKind::WouldBlock => {
|
||||
would_block_count += 1;
|
||||
}
|
||||
// TODO if one socket continuesly returns an error, then we never poll, thus we never wait for a timeout, thus we have a spin-lock
|
||||
Err(e) => return Err(e.into()),
|
||||
}
|
||||
}
|
||||
|
||||
// if each socket returned WouldBlock, then we drained them all at least once indeed
|
||||
self.all_sockets_drained = would_block_count == self.sockets.len();
|
||||
|
||||
Ok(None)
|
||||
}
|
||||
|
||||
/// Try to send a message
|
||||
///
|
||||
/// Every available socket is tried once
|
||||
// TODO cache what socket worked last time
|
||||
// TODO cache what socket we received from last time for that addr
|
||||
pub fn try_send(&mut self, buf: &[u8], addr: SocketAddr) -> anyhow::Result<()> {
|
||||
for socket in &self.sockets {
|
||||
return match socket.send_to(&buf, addr) {
|
||||
Ok(_) => Ok(()),
|
||||
|
||||
// TODO replace this by
|
||||
// Err(e) if e.kind() == io::ErrorKind::NetworkUnreachable => continue,
|
||||
// once https://github.com/rust-lang/rust/issues/86442 lands
|
||||
Err(e)
|
||||
if e.to_string()
|
||||
.starts_with("Address family not supported by protocol") =>
|
||||
{
|
||||
continue
|
||||
}
|
||||
Err(e) => Err(e.into()),
|
||||
};
|
||||
}
|
||||
|
||||
bail!("none of our sockets matched the address family {}", addr);
|
||||
}
|
||||
}
|
||||
265
src/cli.rs
Normal file
265
src/cli.rs
Normal file
@@ -0,0 +1,265 @@
|
||||
use anyhow::{bail, ensure};
|
||||
use clap::Parser;
|
||||
use std::net::ToSocketAddrs;
|
||||
use std::path::{Path, PathBuf};
|
||||
|
||||
use crate::app_server::AppServer;
|
||||
use crate::util::{LoadValue, LoadValueB64};
|
||||
use crate::{
|
||||
// app_server::{AppServer, LoadValue, LoadValueB64},
|
||||
coloring::Secret,
|
||||
pqkem::{StaticKEM, KEM},
|
||||
protocol::{SPk, SSk, SymKey},
|
||||
};
|
||||
|
||||
use super::config;
|
||||
|
||||
#[derive(Parser, Debug)]
|
||||
#[command(author, version, about, long_about)]
|
||||
pub enum Cli {
|
||||
/// Start Rosenpass in server mode and carry on with the key exchange
|
||||
///
|
||||
/// This will parse the configuration file and perform the key exchange
|
||||
/// with the specified peers. If a peer's endpoint is specified, this
|
||||
/// Rosenpass instance will try to initiate a key exchange with the peer,
|
||||
/// otherwise only initiation attempts from the peer will be responded to.
|
||||
ExchangeConfig { config_file: PathBuf },
|
||||
|
||||
/// Start in daemon mode, performing key exchanges
|
||||
///
|
||||
/// The configuration is read from the command line. The `peer` token
|
||||
/// always separates multiple peers, e. g. if the token `peer` appears
|
||||
/// in the WIREGUARD_EXTRA_ARGS it terminates is not put into the
|
||||
/// WireGuard arguments but instead a new peer is created.
|
||||
/* Explanation: `first_arg` and `rest_of_args` are combined into one
|
||||
* `Vec<String>`. They are only used to trick clap into displaying some
|
||||
* guidance on the CLI usage.
|
||||
*/
|
||||
Exchange {
|
||||
/// public-key <PATH> secret-key <PATH> [listen <ADDR>:<PORT>] [verbose]
|
||||
#[clap(value_name = "OWN_CONFIG")]
|
||||
first_arg: String,
|
||||
|
||||
/// peer public-key <PATH> [ENDPOINT] [PSK] [OUTFILE] [WG]
|
||||
///
|
||||
/// ENDPOINT := [endpoint <HOST/IP>:<PORT>]
|
||||
///
|
||||
/// PSK := [preshared-key <PATH>]
|
||||
///
|
||||
/// OUTFILE := [outfile <PATH>]
|
||||
///
|
||||
/// WG := [wireguard <WIREGUARD_DEV> <WIREGUARD_PEER> [WIREGUARD_EXTRA_ARGS]...]
|
||||
#[clap(value_names = [
|
||||
"peer", "public-key", "<PATH>", "[ENDPOINT]" ,"[PSK]", "[OUTFILE]", "[WG]"
|
||||
])]
|
||||
rest_of_args: Vec<String>,
|
||||
|
||||
/// Save the parsed configuration to a file before starting the daemon
|
||||
#[clap(short, long)]
|
||||
config_file: Option<PathBuf>,
|
||||
},
|
||||
|
||||
/// Generate a demo config file
|
||||
GenConfig {
|
||||
config_file: PathBuf,
|
||||
|
||||
/// Forecefully overwrite existing config file
|
||||
#[clap(short, long)]
|
||||
force: bool,
|
||||
},
|
||||
|
||||
/// Generate the keys mentioned in a configFile
|
||||
///
|
||||
/// Generates secret- & public-key to their destination. If a config file
|
||||
/// is provided then the key file destination is taken from there.
|
||||
/// Otherwise the
|
||||
GenKeys {
|
||||
config_file: Option<PathBuf>,
|
||||
|
||||
/// where to write public-key to
|
||||
#[clap(short, long)]
|
||||
public_key: Option<PathBuf>,
|
||||
|
||||
/// where to write secret-key to
|
||||
#[clap(short, long)]
|
||||
secret_key: Option<PathBuf>,
|
||||
|
||||
/// Forecefully overwrite public- & secret-key file
|
||||
#[clap(short, long)]
|
||||
force: bool,
|
||||
},
|
||||
|
||||
/// Validate a configuration
|
||||
Validate { config_files: Vec<PathBuf> },
|
||||
|
||||
/// Show the rosenpass manpage
|
||||
// TODO make this the default, but only after the manpage has been adjusted once the CLI stabilizes
|
||||
Man,
|
||||
}
|
||||
|
||||
impl Cli {
|
||||
pub fn run() -> anyhow::Result<()> {
|
||||
let cli = Self::parse();
|
||||
|
||||
use Cli::*;
|
||||
match cli {
|
||||
Man => {
|
||||
let _man_cmd = std::process::Command::new("man")
|
||||
.args(["1", "rosenpass"])
|
||||
.status();
|
||||
}
|
||||
GenConfig { config_file, force } => {
|
||||
ensure!(
|
||||
force || !config_file.exists(),
|
||||
"config file {config_file:?} already exists"
|
||||
);
|
||||
|
||||
config::Rosenpass::example_config().store(config_file)?;
|
||||
}
|
||||
|
||||
GenKeys {
|
||||
config_file,
|
||||
public_key,
|
||||
secret_key,
|
||||
force,
|
||||
} => {
|
||||
// figure out where the key file is specified, in the config file or directly as flag?
|
||||
let (pkf, skf) = match (config_file, public_key, secret_key) {
|
||||
(Some(config_file), _, _) => {
|
||||
ensure!(
|
||||
config_file.exists(),
|
||||
"config file {config_file:?} does not exist"
|
||||
);
|
||||
|
||||
let config = config::Rosenpass::load(config_file)?;
|
||||
|
||||
(config.public_key, config.secret_key)
|
||||
}
|
||||
(_, Some(pkf), Some(skf)) => (pkf, skf),
|
||||
_ => {
|
||||
bail!("either a config-file or both public-key and secret-key file are required")
|
||||
}
|
||||
};
|
||||
|
||||
// check that we are not overriding something unintentionally
|
||||
let mut problems = vec![];
|
||||
if !force && pkf.is_file() {
|
||||
problems.push(format!(
|
||||
"public-key file {pkf:?} exist, refusing to overwrite it"
|
||||
));
|
||||
}
|
||||
if !force && skf.is_file() {
|
||||
problems.push(format!(
|
||||
"secret-key file {skf:?} exist, refusing to overwrite it"
|
||||
));
|
||||
}
|
||||
if !problems.is_empty() {
|
||||
bail!(problems.join("\n"));
|
||||
}
|
||||
|
||||
// generate the keys and store them in files
|
||||
let mut ssk = crate::protocol::SSk::random();
|
||||
let mut spk = crate::protocol::SPk::random();
|
||||
|
||||
unsafe {
|
||||
StaticKEM::keygen(ssk.secret_mut(), spk.secret_mut())?;
|
||||
ssk.store_secret(skf)?;
|
||||
spk.store_secret(pkf)?;
|
||||
}
|
||||
}
|
||||
|
||||
ExchangeConfig { config_file } => {
|
||||
ensure!(
|
||||
config_file.exists(),
|
||||
"config file '{config_file:?}' does not exist"
|
||||
);
|
||||
|
||||
let config = config::Rosenpass::load(config_file)?;
|
||||
config.validate()?;
|
||||
Self::event_loop(config)?;
|
||||
}
|
||||
|
||||
Exchange {
|
||||
first_arg,
|
||||
mut rest_of_args,
|
||||
config_file,
|
||||
} => {
|
||||
rest_of_args.insert(0, first_arg);
|
||||
let args = rest_of_args;
|
||||
let mut config = config::Rosenpass::parse_args(args)?;
|
||||
|
||||
if let Some(p) = config_file {
|
||||
config.store(&p)?;
|
||||
config.config_file_path = p;
|
||||
}
|
||||
config.validate()?;
|
||||
Self::event_loop(config)?;
|
||||
}
|
||||
|
||||
Validate { config_files } => {
|
||||
for file in config_files {
|
||||
match config::Rosenpass::load(&file) {
|
||||
Ok(config) => {
|
||||
eprintln!("{file:?} is valid TOML and conforms to the expected schema");
|
||||
match config.validate() {
|
||||
Ok(_) => eprintln!("{file:?} is passed all logical checks"),
|
||||
Err(_) => eprintln!("{file:?} contains logical errors"),
|
||||
}
|
||||
}
|
||||
Err(e) => eprintln!("{file:?} is not valid: {e}"),
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn event_loop(config: config::Rosenpass) -> anyhow::Result<()> {
|
||||
// dump config
|
||||
eprintln!("{config:#?}");
|
||||
|
||||
// load own keys
|
||||
let sk = SSk::load(&config.secret_key)?;
|
||||
let pk = SPk::load(&config.public_key)?;
|
||||
|
||||
// start an application server
|
||||
let mut srv = std::boxed::Box::<AppServer>::new(AppServer::new(
|
||||
sk,
|
||||
pk,
|
||||
config.listen,
|
||||
config.verbosity,
|
||||
)?);
|
||||
|
||||
for cfg_peer in config.peers {
|
||||
let endpoint = cfg_peer
|
||||
.endpoint
|
||||
.as_ref()
|
||||
.map(ToSocketAddrs::to_socket_addrs)
|
||||
.transpose()?
|
||||
.and_then(|mut i| i.next());
|
||||
|
||||
srv.add_peer(
|
||||
// psk, pk, outfile, outwg, tx_addr
|
||||
cfg_peer.pre_shared_key.map(SymKey::load_b64).transpose()?,
|
||||
SPk::load(&cfg_peer.public_key)?,
|
||||
cfg_peer.key_out,
|
||||
None, // TODO remove this argument
|
||||
endpoint,
|
||||
)?;
|
||||
}
|
||||
|
||||
srv.event_loop()
|
||||
}
|
||||
}
|
||||
|
||||
trait StoreSecret {
|
||||
unsafe fn store_secret<P: AsRef<Path>>(&self, path: P) -> anyhow::Result<()>;
|
||||
}
|
||||
|
||||
impl<const N: usize> StoreSecret for Secret<N> {
|
||||
unsafe fn store_secret<P: AsRef<Path>>(&self, path: P) -> anyhow::Result<()> {
|
||||
std::fs::write(path, self.secret())?;
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
449
src/config.rs
Normal file
449
src/config.rs
Normal file
@@ -0,0 +1,449 @@
|
||||
use std::{
|
||||
collections::HashSet,
|
||||
fs,
|
||||
io::Write,
|
||||
net::{Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4, SocketAddrV6, ToSocketAddrs},
|
||||
path::{Path, PathBuf},
|
||||
};
|
||||
|
||||
use anyhow::{bail, ensure};
|
||||
use serde::{Deserialize, Serialize};
|
||||
|
||||
use crate::util::fopen_w;
|
||||
|
||||
#[derive(Debug, Serialize, Deserialize)]
|
||||
pub struct Rosenpass {
|
||||
pub public_key: PathBuf,
|
||||
|
||||
pub secret_key: PathBuf,
|
||||
|
||||
pub listen: Vec<SocketAddr>,
|
||||
|
||||
#[serde(default)]
|
||||
pub verbosity: Verbosity,
|
||||
pub peers: Vec<RosenpassPeer>,
|
||||
|
||||
#[serde(skip)]
|
||||
pub config_file_path: PathBuf,
|
||||
}
|
||||
|
||||
#[derive(Debug, PartialEq, Eq, Serialize, Deserialize)]
|
||||
pub enum Verbosity {
|
||||
Quiet,
|
||||
Verbose,
|
||||
}
|
||||
|
||||
#[derive(Debug, Default, PartialEq, Eq, Serialize, Deserialize)]
|
||||
pub struct RosenpassPeer {
|
||||
pub public_key: PathBuf,
|
||||
pub endpoint: Option<String>,
|
||||
pub pre_shared_key: Option<PathBuf>,
|
||||
|
||||
#[serde(default)]
|
||||
pub key_out: Option<PathBuf>,
|
||||
|
||||
// TODO make sure failure does not crash but is logged
|
||||
#[serde(default)]
|
||||
pub exchange_command: Vec<String>,
|
||||
|
||||
// TODO make this field only available on binary builds, not on library builds
|
||||
#[serde(flatten)]
|
||||
pub wg: Option<WireGuard>,
|
||||
}
|
||||
|
||||
#[derive(Debug, Default, PartialEq, Eq, Serialize, Deserialize)]
|
||||
pub struct WireGuard {
|
||||
device: String,
|
||||
peer: String,
|
||||
extra_params: Vec<String>,
|
||||
}
|
||||
|
||||
impl Rosenpass {
|
||||
/// Load a config file from a file path
|
||||
///
|
||||
/// no validation is conducted
|
||||
pub fn load<P: AsRef<Path>>(p: P) -> anyhow::Result<Self> {
|
||||
let mut config: Self = toml::from_str(&fs::read_to_string(&p)?)?;
|
||||
|
||||
config.config_file_path = p.as_ref().to_owned();
|
||||
Ok(config)
|
||||
}
|
||||
|
||||
/// Write a config to a file
|
||||
pub fn store<P: AsRef<Path>>(&self, p: P) -> anyhow::Result<()> {
|
||||
let serialized_config =
|
||||
toml::to_string_pretty(&self).expect("unable to serialize the default config");
|
||||
fs::write(p, serialized_config)?;
|
||||
Ok(())
|
||||
}
|
||||
|
||||
/// Commit the configuration to where it came from, overwriting the original file
|
||||
pub fn commit(&self) -> anyhow::Result<()> {
|
||||
let mut f = fopen_w(&self.config_file_path)?;
|
||||
f.write_all(toml::to_string_pretty(&self)?.as_bytes())?;
|
||||
|
||||
self.store(&self.config_file_path)
|
||||
}
|
||||
|
||||
/// Validate a configuration
|
||||
pub fn validate(&self) -> anyhow::Result<()> {
|
||||
// check the public-key file exists
|
||||
ensure!(
|
||||
self.public_key.is_file(),
|
||||
"public-key file {:?} does not exist",
|
||||
self.public_key
|
||||
);
|
||||
|
||||
// check the secret-key file exists
|
||||
ensure!(
|
||||
self.secret_key.is_file(),
|
||||
"secret-key file {:?} does not exist",
|
||||
self.secret_key
|
||||
);
|
||||
|
||||
for (i, peer) in self.peers.iter().enumerate() {
|
||||
// check peer's public-key file exists
|
||||
ensure!(
|
||||
peer.public_key.is_file(),
|
||||
"peer {i} public-key file {:?} does not exist",
|
||||
peer.public_key
|
||||
);
|
||||
|
||||
// check endpoint is usable
|
||||
if let Some(addr) = peer.endpoint.as_ref() {
|
||||
ensure!(
|
||||
addr.to_socket_addrs().is_ok(),
|
||||
"peer {i} endpoint {} can not be parsed to a socket address",
|
||||
addr
|
||||
);
|
||||
}
|
||||
|
||||
// TODO warn if neither out_key nor exchange_command is defined
|
||||
}
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
/// Creates a new configuration
|
||||
pub fn new<P1: AsRef<Path>, P2: AsRef<Path>>(public_key: P1, secret_key: P2) -> Self {
|
||||
Self {
|
||||
public_key: PathBuf::from(public_key.as_ref()),
|
||||
secret_key: PathBuf::from(secret_key.as_ref()),
|
||||
listen: vec![],
|
||||
verbosity: Verbosity::Quiet,
|
||||
peers: vec![],
|
||||
config_file_path: PathBuf::new(),
|
||||
}
|
||||
}
|
||||
|
||||
/// Add IPv4 __and__ IPv6 IF_ANY address to the listen interfaces
|
||||
pub fn add_if_any(&mut self, port: u16) {
|
||||
let ipv4_any = SocketAddr::V4(SocketAddrV4::new(Ipv4Addr::new(0, 0, 0, 0), port));
|
||||
let ipv6_any = SocketAddr::V6(SocketAddrV6::new(
|
||||
Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0),
|
||||
port,
|
||||
0,
|
||||
0,
|
||||
));
|
||||
self.listen.push(ipv4_any);
|
||||
self.listen.push(ipv6_any);
|
||||
}
|
||||
|
||||
/// from chaotic args
|
||||
/// Quest: the grammar is undecideable, what do we do here?
|
||||
pub fn parse_args(args: Vec<String>) -> anyhow::Result<Self> {
|
||||
let mut config = Self::new("", "");
|
||||
|
||||
#[derive(Debug, Hash, PartialEq, Eq)]
|
||||
enum State {
|
||||
Own,
|
||||
OwnPublicKey,
|
||||
OwnSecretKey,
|
||||
OwnListen,
|
||||
Peer,
|
||||
PeerPsk,
|
||||
PeerPublicKey,
|
||||
PeerEndpoint,
|
||||
PeerOutfile,
|
||||
PeerWireguardDev,
|
||||
PeerWireguardPeer,
|
||||
PeerWireguardExtraArgs,
|
||||
}
|
||||
|
||||
let mut already_set = HashSet::new();
|
||||
|
||||
// TODO idea: use config.peers.len() to give index of peer with conflicting argument
|
||||
use State::*;
|
||||
let mut state = Own;
|
||||
let mut current_peer = None;
|
||||
let p_exists = "a peer should exist by now";
|
||||
let wg_exists = "a peer wireguard should exist by now";
|
||||
for arg in args {
|
||||
state = match (state, arg.as_str(), &mut current_peer) {
|
||||
(Own, "public-key", None) => OwnPublicKey,
|
||||
(Own, "secret-key", None) => OwnSecretKey,
|
||||
(Own, "listen", None) => OwnListen,
|
||||
(Own, "verbose", None) => {
|
||||
config.verbosity = Verbosity::Verbose;
|
||||
Own
|
||||
}
|
||||
(Own, "peer", None) => {
|
||||
ensure!(
|
||||
already_set.contains(&OwnPublicKey),
|
||||
"public-key file must be set"
|
||||
);
|
||||
ensure!(
|
||||
already_set.contains(&OwnSecretKey),
|
||||
"secret-key file must be set"
|
||||
);
|
||||
|
||||
already_set.clear();
|
||||
current_peer = Some(RosenpassPeer::default());
|
||||
|
||||
Peer
|
||||
}
|
||||
(OwnPublicKey, pk, None) => {
|
||||
ensure!(
|
||||
already_set.insert(OwnPublicKey),
|
||||
"public-key was already set"
|
||||
);
|
||||
config.public_key = pk.into();
|
||||
Own
|
||||
}
|
||||
(OwnSecretKey, sk, None) => {
|
||||
ensure!(
|
||||
already_set.insert(OwnSecretKey),
|
||||
"secret-key was already set"
|
||||
);
|
||||
config.secret_key = sk.into();
|
||||
Own
|
||||
}
|
||||
(OwnListen, l, None) => {
|
||||
already_set.insert(OwnListen); // multiple listen directives are allowed
|
||||
for socket_addr in l.to_socket_addrs()? {
|
||||
config.listen.push(socket_addr);
|
||||
}
|
||||
|
||||
Own
|
||||
}
|
||||
(Peer | PeerWireguardExtraArgs, "peer", maybe_peer @ Some(_)) => {
|
||||
// TODO check current peer
|
||||
// commit current peer, create a new one
|
||||
config.peers.push(maybe_peer.take().expect(p_exists));
|
||||
|
||||
already_set.clear();
|
||||
current_peer = Some(RosenpassPeer::default());
|
||||
|
||||
Peer
|
||||
}
|
||||
(Peer, "public-key", Some(_)) => PeerPublicKey,
|
||||
(Peer, "endpoint", Some(_)) => PeerEndpoint,
|
||||
(Peer, "preshared-key", Some(_)) => PeerPsk,
|
||||
(Peer, "outfile", Some(_)) => PeerOutfile,
|
||||
(Peer, "wireguard", Some(_)) => PeerWireguardDev,
|
||||
(PeerPublicKey, pk, Some(peer)) => {
|
||||
ensure!(
|
||||
already_set.insert(PeerPublicKey),
|
||||
"public-key was already set"
|
||||
);
|
||||
peer.public_key = pk.into();
|
||||
Peer
|
||||
}
|
||||
(PeerEndpoint, e, Some(peer)) => {
|
||||
ensure!(already_set.insert(PeerEndpoint), "endpoint was already set");
|
||||
peer.endpoint = Some(e.to_owned());
|
||||
Peer
|
||||
}
|
||||
(PeerPsk, psk, Some(peer)) => {
|
||||
ensure!(already_set.insert(PeerEndpoint), "peer psk was already set");
|
||||
peer.pre_shared_key = Some(psk.into());
|
||||
Peer
|
||||
}
|
||||
(PeerOutfile, of, Some(peer)) => {
|
||||
ensure!(
|
||||
already_set.insert(PeerOutfile),
|
||||
"peer outfile was already set"
|
||||
);
|
||||
peer.key_out = Some(of.into());
|
||||
Peer
|
||||
}
|
||||
(PeerWireguardDev, dev, Some(peer)) => {
|
||||
ensure!(
|
||||
already_set.insert(PeerWireguardDev),
|
||||
"peer wireguard-dev was already set"
|
||||
);
|
||||
assert!(peer.wg.is_none());
|
||||
peer.wg = Some(WireGuard {
|
||||
device: dev.to_string(),
|
||||
..Default::default()
|
||||
});
|
||||
|
||||
PeerWireguardPeer
|
||||
}
|
||||
(PeerWireguardPeer, p, Some(peer)) => {
|
||||
ensure!(
|
||||
already_set.insert(PeerWireguardPeer),
|
||||
"peer wireguard-peer was already set"
|
||||
);
|
||||
peer.wg.as_mut().expect(wg_exists).peer = p.to_string();
|
||||
PeerWireguardExtraArgs
|
||||
}
|
||||
(PeerWireguardExtraArgs, arg, Some(peer)) => {
|
||||
peer.wg
|
||||
.as_mut()
|
||||
.expect(wg_exists)
|
||||
.extra_params
|
||||
.push(arg.to_string());
|
||||
PeerWireguardExtraArgs
|
||||
}
|
||||
|
||||
// error cases
|
||||
(Own, x, None) => {
|
||||
bail!("unrecognised argument {x}");
|
||||
}
|
||||
(Own | OwnPublicKey | OwnSecretKey | OwnListen, _, Some(_)) => {
|
||||
panic!("current_peer is not None while in Own* state, this must never happen")
|
||||
}
|
||||
|
||||
(State::Peer, arg, Some(_)) => {
|
||||
bail!("unrecongnised argument {arg}");
|
||||
}
|
||||
(
|
||||
Peer
|
||||
| PeerEndpoint
|
||||
| PeerOutfile
|
||||
| PeerPublicKey
|
||||
| PeerPsk
|
||||
| PeerWireguardDev
|
||||
| PeerWireguardPeer
|
||||
| PeerWireguardExtraArgs,
|
||||
_,
|
||||
None,
|
||||
) => {
|
||||
panic!("got peer options but no peer was created")
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
if let Some(p) = current_peer {
|
||||
// TODO ensure peer is propagated with sufficient information
|
||||
config.peers.push(p);
|
||||
}
|
||||
|
||||
Ok(config)
|
||||
}
|
||||
}
|
||||
|
||||
impl Rosenpass {
|
||||
/// Generate an example configuration
|
||||
pub fn example_config() -> Self {
|
||||
let peer = RosenpassPeer {
|
||||
public_key: "rp-peer-public-key".into(),
|
||||
endpoint: Some("my-peer.test:9999".into()),
|
||||
exchange_command: [
|
||||
"wg",
|
||||
"set",
|
||||
"wg0",
|
||||
"peer",
|
||||
"<PEER_ID>",
|
||||
"preshared-key",
|
||||
"/dev/stdin",
|
||||
]
|
||||
.into_iter()
|
||||
.map(|x| x.to_string())
|
||||
.collect(),
|
||||
key_out: Some("rp-key-out".into()),
|
||||
pre_shared_key: None,
|
||||
wg: None,
|
||||
};
|
||||
|
||||
Self {
|
||||
public_key: "rp-public-key".into(),
|
||||
secret_key: "rp-secret-key".into(),
|
||||
peers: vec![peer],
|
||||
..Self::new("", "")
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Default for Verbosity {
|
||||
fn default() -> Self {
|
||||
Self::Quiet
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod test {
|
||||
use std::net::IpAddr;
|
||||
|
||||
use super::*;
|
||||
|
||||
fn split_str(s: &str) -> Vec<String> {
|
||||
s.split(" ").map(|s| s.to_string()).collect()
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_simple_cli_parse() {
|
||||
let args = split_str(
|
||||
"public-key /my/public-key secret-key /my/secret-key verbose \
|
||||
listen 0.0.0.0:9999 peer public-key /peer/public-key endpoint \
|
||||
peer.test:9999 outfile /peer/rp-out",
|
||||
);
|
||||
|
||||
let config = Rosenpass::parse_args(args).unwrap();
|
||||
|
||||
assert_eq!(config.public_key, PathBuf::from("/my/public-key"));
|
||||
assert_eq!(config.secret_key, PathBuf::from("/my/secret-key"));
|
||||
assert_eq!(config.verbosity, Verbosity::Verbose);
|
||||
assert_eq!(
|
||||
&config.listen,
|
||||
&vec![SocketAddr::new(IpAddr::V4(Ipv4Addr::new(0, 0, 0, 0)), 9999)]
|
||||
);
|
||||
assert_eq!(
|
||||
config.peers,
|
||||
vec![RosenpassPeer {
|
||||
public_key: PathBuf::from("/peer/public-key"),
|
||||
endpoint: Some("peer.test:9999".into()),
|
||||
pre_shared_key: None,
|
||||
key_out: Some(PathBuf::from("/peer/rp-out")),
|
||||
..Default::default()
|
||||
}]
|
||||
)
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_cli_parse_multiple_peers() {
|
||||
let args = split_str(
|
||||
"public-key /my/public-key secret-key /my/secret-key verbose \
|
||||
peer public-key /peer-a/public-key endpoint \
|
||||
peer.test:9999 outfile /peer-a/rp-out \
|
||||
peer public-key /peer-b/public-key outfile /peer-b/rp-out",
|
||||
);
|
||||
|
||||
let config = Rosenpass::parse_args(args).unwrap();
|
||||
|
||||
assert_eq!(config.public_key, PathBuf::from("/my/public-key"));
|
||||
assert_eq!(config.secret_key, PathBuf::from("/my/secret-key"));
|
||||
assert_eq!(config.verbosity, Verbosity::Verbose);
|
||||
assert!(&config.listen.is_empty());
|
||||
assert_eq!(
|
||||
config.peers,
|
||||
vec![
|
||||
RosenpassPeer {
|
||||
public_key: PathBuf::from("/peer-a/public-key"),
|
||||
endpoint: Some("peer.test:9999".into()),
|
||||
pre_shared_key: None,
|
||||
key_out: Some(PathBuf::from("/peer-a/rp-out")),
|
||||
..Default::default()
|
||||
},
|
||||
RosenpassPeer {
|
||||
public_key: PathBuf::from("/peer-b/public-key"),
|
||||
endpoint: None,
|
||||
pre_shared_key: None,
|
||||
key_out: Some(PathBuf::from("/peer-b/rp-out")),
|
||||
..Default::default()
|
||||
}
|
||||
]
|
||||
)
|
||||
}
|
||||
}
|
||||
@@ -5,6 +5,9 @@ pub mod sodium;
|
||||
pub mod coloring;
|
||||
#[rustfmt::skip]
|
||||
pub mod labeled_prf;
|
||||
pub mod app_server;
|
||||
pub mod cli;
|
||||
pub mod config;
|
||||
pub mod msgs;
|
||||
pub mod pqkem;
|
||||
pub mod prftree;
|
||||
|
||||
657
src/main.rs
657
src/main.rs
@@ -1,261 +1,11 @@
|
||||
use anyhow::{bail, ensure, Context, Result};
|
||||
use log::{error, info};
|
||||
use rosenpass::{
|
||||
attempt,
|
||||
coloring::{Public, Secret},
|
||||
pqkem::{StaticKEM, KEM},
|
||||
protocol::{CryptoServer, MsgBuf, PeerPtr, SPk, SSk, SymKey, Timing},
|
||||
sodium::sodium_init,
|
||||
util::{b64_reader, b64_writer, fmt_b64},
|
||||
};
|
||||
use std::{
|
||||
fs::{File, OpenOptions},
|
||||
io::{ErrorKind, Read, Write},
|
||||
net::{SocketAddr, ToSocketAddrs, UdpSocket},
|
||||
path::Path,
|
||||
process::{exit, Command, Stdio},
|
||||
time::Duration,
|
||||
};
|
||||
|
||||
/// Open a file writable
|
||||
pub fn fopen_w<P: AsRef<Path>>(path: P) -> Result<File> {
|
||||
Ok(OpenOptions::new()
|
||||
.read(false)
|
||||
.write(true)
|
||||
.create(true)
|
||||
.truncate(true)
|
||||
.open(path)?)
|
||||
}
|
||||
/// Open a file readable
|
||||
pub fn fopen_r<P: AsRef<Path>>(path: P) -> Result<File> {
|
||||
Ok(OpenOptions::new()
|
||||
.read(true)
|
||||
.write(false)
|
||||
.create(false)
|
||||
.truncate(false)
|
||||
.open(path)?)
|
||||
}
|
||||
|
||||
pub trait ReadExactToEnd {
|
||||
fn read_exact_to_end(&mut self, buf: &mut [u8]) -> Result<()>;
|
||||
}
|
||||
|
||||
impl<R: Read> ReadExactToEnd for R {
|
||||
fn read_exact_to_end(&mut self, buf: &mut [u8]) -> Result<()> {
|
||||
let mut dummy = [0u8; 8];
|
||||
self.read_exact(buf)?;
|
||||
ensure!(self.read(&mut dummy)? == 0, "File too long!");
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
pub trait LoadValue {
|
||||
fn load<P: AsRef<Path>>(path: P) -> Result<Self>
|
||||
where
|
||||
Self: Sized;
|
||||
}
|
||||
|
||||
pub trait LoadValueB64 {
|
||||
fn load_b64<P: AsRef<Path>>(path: P) -> Result<Self>
|
||||
where
|
||||
Self: Sized;
|
||||
}
|
||||
|
||||
trait StoreValue {
|
||||
fn store<P: AsRef<Path>>(&self, path: P) -> Result<()>;
|
||||
}
|
||||
|
||||
trait StoreSecret {
|
||||
unsafe fn store_secret<P: AsRef<Path>>(&self, path: P) -> Result<()>;
|
||||
}
|
||||
|
||||
impl<T: StoreValue> StoreSecret for T {
|
||||
unsafe fn store_secret<P: AsRef<Path>>(&self, path: P) -> Result<()> {
|
||||
self.store(path)
|
||||
}
|
||||
}
|
||||
|
||||
impl<const N: usize> LoadValue for Secret<N> {
|
||||
fn load<P: AsRef<Path>>(path: P) -> Result<Self> {
|
||||
let mut v = Self::random();
|
||||
let p = path.as_ref();
|
||||
fopen_r(p)?
|
||||
.read_exact_to_end(v.secret_mut())
|
||||
.with_context(|| format!("Could not load file {p:?}"))?;
|
||||
Ok(v)
|
||||
}
|
||||
}
|
||||
|
||||
impl<const N: usize> LoadValueB64 for Secret<N> {
|
||||
fn load_b64<P: AsRef<Path>>(path: P) -> Result<Self> {
|
||||
let mut v = Self::random();
|
||||
let p = path.as_ref();
|
||||
// This might leave some fragments of the secret on the stack;
|
||||
// in practice this is likely not a problem because the stack likely
|
||||
// will be overwritten by something else soon but this is not exactly
|
||||
// guaranteed. It would be possible to remedy this, but since the secret
|
||||
// data will linger in the linux page cache anyways with the current
|
||||
// implementation, going to great length to erase the secret here is
|
||||
// not worth it right now.
|
||||
b64_reader(&mut fopen_r(p)?)
|
||||
.read_exact(v.secret_mut())
|
||||
.with_context(|| format!("Could not load base64 file {p:?}"))?;
|
||||
Ok(v)
|
||||
}
|
||||
}
|
||||
|
||||
impl<const N: usize> StoreSecret for Secret<N> {
|
||||
unsafe fn store_secret<P: AsRef<Path>>(&self, path: P) -> Result<()> {
|
||||
std::fs::write(path, self.secret())?;
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
impl<const N: usize> LoadValue for Public<N> {
|
||||
fn load<P: AsRef<Path>>(path: P) -> Result<Self> {
|
||||
let mut v = Self::random();
|
||||
fopen_r(path)?.read_exact_to_end(&mut *v)?;
|
||||
Ok(v)
|
||||
}
|
||||
}
|
||||
|
||||
impl<const N: usize> StoreValue for Public<N> {
|
||||
fn store<P: AsRef<Path>>(&self, path: P) -> Result<()> {
|
||||
std::fs::write(path, **self)?;
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
macro_rules! bail_usage {
|
||||
($args:expr, $($pt:expr),*) => {{
|
||||
error!($($pt),*);
|
||||
cmd_help()?;
|
||||
exit(1);
|
||||
}}
|
||||
}
|
||||
|
||||
macro_rules! ensure_usage {
|
||||
($args:expr, $ck:expr, $($pt:expr),*) => {{
|
||||
if !$ck {
|
||||
bail_usage!($args, $($pt),*);
|
||||
}
|
||||
}}
|
||||
}
|
||||
|
||||
macro_rules! mandatory_opt {
|
||||
($args:expr, $val:expr, $name:expr) => {{
|
||||
ensure_usage!($args, $val.is_some(), "{0} option is mandatory", $name)
|
||||
}};
|
||||
}
|
||||
|
||||
pub struct ArgsWalker {
|
||||
pub argv: Vec<String>,
|
||||
pub off: usize,
|
||||
}
|
||||
|
||||
impl ArgsWalker {
|
||||
pub fn get(&self) -> Option<&str> {
|
||||
self.argv.get(self.off).map(|s| s as &str)
|
||||
}
|
||||
|
||||
pub fn prev(&mut self) -> Option<&str> {
|
||||
assert!(self.off > 0);
|
||||
self.off -= 1;
|
||||
self.get()
|
||||
}
|
||||
|
||||
#[allow(clippy::should_implement_trait)]
|
||||
pub fn next(&mut self) -> Option<&str> {
|
||||
assert!(self.todo() > 0);
|
||||
self.off += 1;
|
||||
self.get()
|
||||
}
|
||||
|
||||
pub fn opt(&mut self, dst: &mut Option<String>) -> Result<()> {
|
||||
let cmd = &self.argv[self.off - 1];
|
||||
ensure_usage!(&self, self.todo() > 0, "Option {} takes a value", cmd);
|
||||
ensure_usage!(&self, dst.is_none(), "Cannot set {} multiple times.", cmd);
|
||||
*dst = Some(String::from(self.next().unwrap()));
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn todo(&self) -> usize {
|
||||
self.argv.len() - self.off
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Default, Debug)]
|
||||
pub struct WireguardOut {
|
||||
// impl KeyOutput
|
||||
dev: String,
|
||||
pk: String,
|
||||
extra_params: Vec<String>,
|
||||
}
|
||||
|
||||
#[derive(Default, Debug)]
|
||||
pub struct AppPeer {
|
||||
pub outfile: Option<String>,
|
||||
pub outwg: Option<WireguardOut>,
|
||||
pub tx_addr: Option<SocketAddr>,
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
pub enum Verbosity {
|
||||
Quiet,
|
||||
Verbose,
|
||||
}
|
||||
|
||||
/// Holds the state of the application, namely the external IO
|
||||
#[derive(Debug)]
|
||||
pub struct AppServer {
|
||||
pub crypt: CryptoServer,
|
||||
pub sock: UdpSocket,
|
||||
pub peers: Vec<AppPeer>,
|
||||
pub verbosity: Verbosity,
|
||||
}
|
||||
|
||||
/// Index based pointer to a Peer
|
||||
#[derive(Debug)]
|
||||
pub struct AppPeerPtr(pub usize);
|
||||
|
||||
impl AppPeerPtr {
|
||||
/// Takes an index based handle and returns the actual peer
|
||||
pub fn lift(p: PeerPtr) -> Self {
|
||||
Self(p.0)
|
||||
}
|
||||
|
||||
/// Returns an index based handle to one Peer
|
||||
pub fn lower(&self) -> PeerPtr {
|
||||
PeerPtr(self.0)
|
||||
}
|
||||
|
||||
pub fn get_app<'a>(&self, srv: &'a AppServer) -> &'a AppPeer {
|
||||
&srv.peers[self.0]
|
||||
}
|
||||
|
||||
pub fn get_app_mut<'a>(&self, srv: &'a mut AppServer) -> &'a mut AppPeer {
|
||||
&mut srv.peers[self.0]
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
pub enum AppPollResult {
|
||||
DeleteKey(AppPeerPtr),
|
||||
SendInitiation(AppPeerPtr),
|
||||
SendRetransmission(AppPeerPtr),
|
||||
ReceivedMessage(usize, SocketAddr),
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
pub enum KeyOutputReason {
|
||||
Exchanged,
|
||||
Stale,
|
||||
}
|
||||
use log::error;
|
||||
use rosenpass::{cli::Cli, sodium::sodium_init};
|
||||
use std::process::exit;
|
||||
|
||||
/// Catches errors, prints them through the logger, then exits
|
||||
pub fn main() {
|
||||
env_logger::init();
|
||||
match rosenpass_main() {
|
||||
match sodium_init().and_then(|()| Cli::run()) {
|
||||
Ok(_) => {}
|
||||
Err(e) => {
|
||||
error!("{e}");
|
||||
@@ -263,402 +13,3 @@ pub fn main() {
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// Entry point to the whole program
|
||||
pub fn rosenpass_main() -> Result<()> {
|
||||
sodium_init()?;
|
||||
|
||||
let mut args = ArgsWalker {
|
||||
argv: std::env::args().collect(),
|
||||
off: 0, // skipping executable path
|
||||
};
|
||||
|
||||
// Command parsing
|
||||
match args.next() {
|
||||
Some("help") | Some("-h") | Some("-help") | Some("--help") => cmd_help()?,
|
||||
Some("keygen") => cmd_keygen(args)?,
|
||||
Some("exchange") => cmd_exchange(args)?,
|
||||
Some(cmd) => bail_usage!(&args, "No such command {}", cmd),
|
||||
None => bail_usage!(&args, "Expected a command!"),
|
||||
};
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
/// Print the usage information
|
||||
pub fn cmd_help() -> Result<()> {
|
||||
let man_cmd = Command::new("man").args(["1", "rosenpass"]).status();
|
||||
if man_cmd.is_ok() && man_cmd.unwrap().success() {
|
||||
return Ok(());
|
||||
}
|
||||
|
||||
// Print the compiled manual
|
||||
eprint!(include_str!(env!("ROSENPASS_MAN")));
|
||||
Ok(())
|
||||
}
|
||||
|
||||
/// Generate a keypair
|
||||
pub fn cmd_keygen(mut args: ArgsWalker) -> Result<()> {
|
||||
let mut sf: Option<String> = None;
|
||||
let mut pf: Option<String> = None;
|
||||
|
||||
// Arg parsing
|
||||
loop {
|
||||
match args.next() {
|
||||
Some("private-key") => args.opt(&mut sf)?,
|
||||
Some("public-key") => args.opt(&mut pf)?,
|
||||
Some(opt) => bail_usage!(&args, "Unknown option `{}`", opt),
|
||||
None => break,
|
||||
};
|
||||
}
|
||||
|
||||
mandatory_opt!(&args, sf, "private-key");
|
||||
mandatory_opt!(&args, pf, "private-key");
|
||||
|
||||
// Cmd
|
||||
let (mut ssk, mut spk) = (SSk::random(), SPk::random());
|
||||
unsafe {
|
||||
StaticKEM::keygen(ssk.secret_mut(), spk.secret_mut())?;
|
||||
ssk.store_secret(sf.unwrap())?;
|
||||
spk.store_secret(pf.unwrap())?;
|
||||
}
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
pub fn cmd_exchange(mut args: ArgsWalker) -> Result<()> {
|
||||
// Argument parsing
|
||||
let mut sf: Option<String> = None;
|
||||
let mut pf: Option<String> = None;
|
||||
let mut listen: Option<String> = None;
|
||||
let mut verbosity = Verbosity::Quiet;
|
||||
|
||||
// Global parameters
|
||||
loop {
|
||||
match args.next() {
|
||||
Some("private-key") => args.opt(&mut sf)?,
|
||||
Some("public-key") => args.opt(&mut pf)?,
|
||||
Some("listen") => args.opt(&mut listen)?,
|
||||
Some("verbose") => {
|
||||
verbosity = Verbosity::Verbose;
|
||||
}
|
||||
Some("peer") => {
|
||||
args.prev();
|
||||
break;
|
||||
}
|
||||
Some(opt) => bail_usage!(&args, "Unknown option `{}`", opt),
|
||||
None => break,
|
||||
};
|
||||
}
|
||||
|
||||
mandatory_opt!(&args, sf, "private-key");
|
||||
mandatory_opt!(&args, pf, "public-key");
|
||||
|
||||
let mut srv = std::boxed::Box::<AppServer>::new(AppServer::new(
|
||||
// sk, pk, addr
|
||||
SSk::load(&sf.unwrap())?,
|
||||
SPk::load(&pf.unwrap())?,
|
||||
listen.as_deref().unwrap_or("[0::0]:0"),
|
||||
verbosity,
|
||||
)?);
|
||||
|
||||
// Peer parameters
|
||||
'_parseAllPeers: while args.todo() > 0 {
|
||||
let mut pf: Option<String> = None;
|
||||
let mut outfile: Option<String> = None;
|
||||
let mut outwg: Option<WireguardOut> = None;
|
||||
let mut endpoint: Option<String> = None;
|
||||
let mut pskf: Option<String> = None;
|
||||
|
||||
args.next(); // skip "peer" starter itself
|
||||
|
||||
'parseOnePeer: loop {
|
||||
match args.next() {
|
||||
// Done with this peer
|
||||
Some("peer") => {
|
||||
args.prev();
|
||||
break 'parseOnePeer;
|
||||
}
|
||||
None => break 'parseOnePeer,
|
||||
// Options
|
||||
Some("public-key") => args.opt(&mut pf)?,
|
||||
Some("endpoint") => args.opt(&mut endpoint)?,
|
||||
Some("preshared-key") => args.opt(&mut pskf)?,
|
||||
Some("outfile") => args.opt(&mut outfile)?,
|
||||
// Wireguard out
|
||||
Some("wireguard") => {
|
||||
ensure_usage!(
|
||||
&args,
|
||||
outwg.is_none(),
|
||||
"Cannot set wireguard output for the same peer multiple times."
|
||||
);
|
||||
ensure_usage!(&args, args.todo() >= 2, "Option wireguard takes to values");
|
||||
let dev = String::from(args.next().unwrap());
|
||||
let pk = String::from(args.next().unwrap());
|
||||
let wg = outwg.insert(WireguardOut {
|
||||
dev,
|
||||
pk,
|
||||
extra_params: Vec::new(),
|
||||
});
|
||||
'_parseWgOutExtra: loop {
|
||||
match args.next() {
|
||||
Some("peer") => {
|
||||
args.prev();
|
||||
break 'parseOnePeer;
|
||||
}
|
||||
None => break 'parseOnePeer,
|
||||
Some(xtra) => wg.extra_params.push(xtra.to_string()),
|
||||
};
|
||||
}
|
||||
}
|
||||
// Invalid
|
||||
Some(opt) => bail_usage!(&args, "Unknown peer option `{}`", opt),
|
||||
};
|
||||
}
|
||||
|
||||
mandatory_opt!(&args, pf, "private-key");
|
||||
ensure_usage!(
|
||||
&args,
|
||||
outfile.is_some() || outwg.is_some(),
|
||||
"Either of the outfile or wireguard option is mandatory"
|
||||
);
|
||||
|
||||
let tx_addr = endpoint
|
||||
.map(|e| {
|
||||
e.to_socket_addrs()?
|
||||
.next()
|
||||
.context("Expected address in endpoint parameter")
|
||||
})
|
||||
.transpose()?;
|
||||
|
||||
srv.add_peer(
|
||||
// psk, pk, outfile, outwg, tx_addr
|
||||
pskf.map(SymKey::load_b64).transpose()?,
|
||||
SPk::load(&pf.unwrap())?,
|
||||
outfile,
|
||||
outwg,
|
||||
tx_addr,
|
||||
)?;
|
||||
}
|
||||
|
||||
srv.listen_loop()
|
||||
}
|
||||
|
||||
impl AppServer {
|
||||
pub fn new<A: ToSocketAddrs>(sk: SSk, pk: SPk, addr: A, verbosity: Verbosity) -> Result<Self> {
|
||||
Ok(Self {
|
||||
crypt: CryptoServer::new(sk, pk),
|
||||
sock: UdpSocket::bind(addr)?,
|
||||
peers: Vec::new(),
|
||||
verbosity,
|
||||
})
|
||||
}
|
||||
|
||||
pub fn verbose(&self) -> bool {
|
||||
matches!(self.verbosity, Verbosity::Verbose)
|
||||
}
|
||||
|
||||
pub fn add_peer(
|
||||
&mut self,
|
||||
psk: Option<SymKey>,
|
||||
pk: SPk,
|
||||
outfile: Option<String>,
|
||||
outwg: Option<WireguardOut>,
|
||||
tx_addr: Option<SocketAddr>,
|
||||
) -> Result<AppPeerPtr> {
|
||||
let PeerPtr(pn) = self.crypt.add_peer(psk, pk)?;
|
||||
assert!(pn == self.peers.len());
|
||||
self.peers.push(AppPeer {
|
||||
outfile,
|
||||
outwg,
|
||||
tx_addr,
|
||||
});
|
||||
Ok(AppPeerPtr(pn))
|
||||
}
|
||||
|
||||
pub fn listen_loop(&mut self) -> Result<()> {
|
||||
const INIT_SLEEP: f64 = 0.01;
|
||||
const MAX_FAILURES: i32 = 10;
|
||||
let mut failure_cnt = 0;
|
||||
|
||||
loop {
|
||||
let msgs_processed = 0usize;
|
||||
let err = match self.event_loop() {
|
||||
Ok(()) => return Ok(()),
|
||||
Err(e) => e,
|
||||
};
|
||||
|
||||
// This should not happen…
|
||||
failure_cnt = if msgs_processed > 0 {
|
||||
0
|
||||
} else {
|
||||
failure_cnt + 1
|
||||
};
|
||||
let sleep = INIT_SLEEP * 2.0f64.powf(f64::from(failure_cnt - 1));
|
||||
let tries_left = MAX_FAILURES - (failure_cnt - 1);
|
||||
error!(
|
||||
"unexpected error after processing {} messages: {:?} {}",
|
||||
msgs_processed,
|
||||
err,
|
||||
err.backtrace()
|
||||
);
|
||||
if tries_left > 0 {
|
||||
error!("reinitializing networking in {sleep}! {tries_left} tries left.");
|
||||
std::thread::sleep(self.crypt.timebase.dur(sleep));
|
||||
continue;
|
||||
}
|
||||
|
||||
bail!("too many network failures");
|
||||
}
|
||||
}
|
||||
|
||||
pub fn event_loop(&mut self) -> Result<()> {
|
||||
let (mut rx, mut tx) = (MsgBuf::zero(), MsgBuf::zero());
|
||||
|
||||
/// if socket address for peer is known, call closure
|
||||
/// assumes that closure leaves a message in `tx`
|
||||
/// assumes that closure returns the length of message in bytes
|
||||
macro_rules! tx_maybe_with {
|
||||
($peer:expr, $fn:expr) => {
|
||||
attempt!({
|
||||
let p = $peer.get_app(self);
|
||||
if let Some(addr) = p.tx_addr {
|
||||
let len = $fn()?;
|
||||
self.sock.send_to(&tx[..len], addr)?;
|
||||
}
|
||||
Ok(())
|
||||
})
|
||||
};
|
||||
}
|
||||
|
||||
loop {
|
||||
use rosenpass::protocol::HandleMsgResult;
|
||||
use AppPollResult::*;
|
||||
use KeyOutputReason::*;
|
||||
match self.poll(&mut *rx)? {
|
||||
SendInitiation(peer) => tx_maybe_with!(peer, || self
|
||||
.crypt
|
||||
.initiate_handshake(peer.lower(), &mut *tx))?,
|
||||
SendRetransmission(peer) => tx_maybe_with!(peer, || self
|
||||
.crypt
|
||||
.retransmit_handshake(peer.lower(), &mut *tx))?,
|
||||
DeleteKey(peer) => self.output_key(peer, Stale, &SymKey::random())?,
|
||||
|
||||
ReceivedMessage(len, addr) => {
|
||||
match self.crypt.handle_msg(&rx[..len], &mut *tx) {
|
||||
Err(ref e) => {
|
||||
self.verbose().then(|| {
|
||||
info!(
|
||||
"error processing incoming message from {:?}: {:?} {}",
|
||||
addr,
|
||||
e,
|
||||
e.backtrace()
|
||||
);
|
||||
});
|
||||
}
|
||||
|
||||
Ok(HandleMsgResult {
|
||||
resp,
|
||||
exchanged_with,
|
||||
..
|
||||
}) => {
|
||||
if let Some(len) = resp {
|
||||
self.sock.send_to(&tx[0..len], addr)?;
|
||||
}
|
||||
|
||||
if let Some(p) = exchanged_with {
|
||||
let ap = AppPeerPtr::lift(p);
|
||||
ap.get_app_mut(self).tx_addr = Some(addr);
|
||||
|
||||
// TODO: Maybe we should rather call the key "rosenpass output"?
|
||||
self.output_key(ap, Exchanged, &self.crypt.osk(p)?)?;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
pub fn output_key(&self, peer: AppPeerPtr, why: KeyOutputReason, key: &SymKey) -> Result<()> {
|
||||
let peerid = peer.lower().get(&self.crypt).pidt()?;
|
||||
let ap = peer.get_app(self);
|
||||
|
||||
if self.verbose() {
|
||||
let msg = match why {
|
||||
KeyOutputReason::Exchanged => "Exchanged key with peer",
|
||||
KeyOutputReason::Stale => "Erasing outdated key from peer",
|
||||
};
|
||||
info!("{} {}", msg, fmt_b64(&*peerid));
|
||||
}
|
||||
|
||||
if let Some(of) = ap.outfile.as_ref() {
|
||||
// This might leave some fragments of the secret on the stack;
|
||||
// in practice this is likely not a problem because the stack likely
|
||||
// will be overwritten by something else soon but this is not exactly
|
||||
// guaranteed. It would be possible to remedy this, but since the secret
|
||||
// data will linger in the linux page cache anyways with the current
|
||||
// implementation, going to great length to erase the secret here is
|
||||
// not worth it right now.
|
||||
b64_writer(fopen_w(of)?).write_all(key.secret())?;
|
||||
let why = match why {
|
||||
KeyOutputReason::Exchanged => "exchanged",
|
||||
KeyOutputReason::Stale => "stale",
|
||||
};
|
||||
println!(
|
||||
"output-key peer {} key-file {} {}",
|
||||
fmt_b64(&*peerid),
|
||||
of,
|
||||
why
|
||||
);
|
||||
}
|
||||
|
||||
if let Some(owg) = ap.outwg.as_ref() {
|
||||
let child = Command::new("wg")
|
||||
.arg("set")
|
||||
.arg(&owg.dev)
|
||||
.arg("peer")
|
||||
.arg(&owg.pk)
|
||||
.arg("preshared-key")
|
||||
.arg("/dev/stdin")
|
||||
.stdin(Stdio::piped())
|
||||
.args(&owg.extra_params)
|
||||
.spawn()?;
|
||||
b64_writer(child.stdin.unwrap()).write_all(key.secret())?;
|
||||
}
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
pub fn poll(&mut self, rx_buf: &mut [u8]) -> Result<AppPollResult> {
|
||||
use rosenpass::protocol::PollResult as C;
|
||||
use AppPollResult as A;
|
||||
loop {
|
||||
return Ok(match self.crypt.poll()? {
|
||||
C::DeleteKey(PeerPtr(no)) => A::DeleteKey(AppPeerPtr(no)),
|
||||
C::SendInitiation(PeerPtr(no)) => A::SendInitiation(AppPeerPtr(no)),
|
||||
C::SendRetransmission(PeerPtr(no)) => A::SendRetransmission(AppPeerPtr(no)),
|
||||
C::Sleep(timeout) => match self.try_recv(rx_buf, timeout)? {
|
||||
Some((len, addr)) => A::ReceivedMessage(len, addr),
|
||||
None => continue,
|
||||
},
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
pub fn try_recv(&self, buf: &mut [u8], timeout: Timing) -> Result<Option<(usize, SocketAddr)>> {
|
||||
if timeout == 0.0 {
|
||||
return Ok(None);
|
||||
}
|
||||
self.sock
|
||||
.set_read_timeout(Some(Duration::from_secs_f64(timeout)))?;
|
||||
match self.sock.recv_from(buf) {
|
||||
Ok(x) => Ok(Some(x)),
|
||||
Err(e) => match e.kind() {
|
||||
ErrorKind::WouldBlock => Ok(None),
|
||||
ErrorKind::TimedOut => Ok(None),
|
||||
_ => Err(anyhow::Error::new(e)),
|
||||
},
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@@ -28,7 +28,7 @@
|
||||
//! // always init libsodium before anything
|
||||
//! rosenpass::sodium::sodium_init().unwrap();
|
||||
//!
|
||||
//! // initialize public and private key for peer a ...
|
||||
//! // initialize secret and public key for peer a ...
|
||||
//! let (mut peer_a_sk, mut peer_a_pk) = (SSk::zero(), SPk::zero());
|
||||
//! StaticKEM::keygen(peer_a_sk.secret_mut(), peer_a_pk.secret_mut())?;
|
||||
//!
|
||||
@@ -249,18 +249,13 @@ impl HandshakeRole {
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Copy, Clone, Hash, PartialEq, Eq, PartialOrd, Ord, Debug)]
|
||||
#[derive(Copy, Clone, Default, Hash, PartialEq, Eq, PartialOrd, Ord, Debug)]
|
||||
pub enum HandshakeStateMachine {
|
||||
#[default]
|
||||
RespHello,
|
||||
RespConf,
|
||||
}
|
||||
|
||||
impl Default for HandshakeStateMachine {
|
||||
fn default() -> Self {
|
||||
HandshakeStateMachine::RespHello
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
pub struct InitiatorHandshake {
|
||||
pub created_at: Timing,
|
||||
@@ -1704,7 +1699,7 @@ mod test {
|
||||
// always init libsodium before anything
|
||||
crate::sodium::sodium_init().unwrap();
|
||||
|
||||
// initialize public and private key for the crypto server
|
||||
// initialize secret and public key for the crypto server
|
||||
let (mut sk, mut pk) = (SSk::zero(), SPk::zero());
|
||||
StaticKEM::keygen(sk.secret_mut(), pk.secret_mut()).expect("unable to generate keys");
|
||||
|
||||
|
||||
48
src/usage.md
48
src/usage.md
@@ -1,48 +0,0 @@
|
||||
NAME
|
||||
|
||||
{0} – Perform post-quantum secure key exchanges for wireguard and other services.
|
||||
|
||||
SYNOPSIS
|
||||
|
||||
{0} [ COMMAND ] [ OPTIONS ]... [ ARGS ]...
|
||||
|
||||
DESCRIPTION
|
||||
{0} performs cryptographic key exchanges that are secure against quantum-computers and outputs the keys.
|
||||
These keys can then be passed to various services such as wireguard or other vpn services
|
||||
as pre-shared-keys to achieve security against attackers with quantum computers.
|
||||
|
||||
COMMANDS
|
||||
|
||||
keygen private-key <file-path> public-key <file-path>
|
||||
Generate a keypair to use in the exchange command later. Send the public-key file to your communication partner
|
||||
and keep the private-key file a secret!
|
||||
|
||||
exchange private-key <file-path> public-key <file-path> [ OPTIONS ]... PEER...\n"
|
||||
Start a process to exchange keys with the specified peers. You should specify at least one peer.
|
||||
|
||||
OPTIONS
|
||||
listen <ip>[:<port>]
|
||||
Instructs {0} to listen on the specified interface and port. By default {0} will listen on all interfaces and select a random port.
|
||||
|
||||
verbose
|
||||
Extra logging
|
||||
|
||||
PEER := peer public-key <file-path> [endpoint <ip>[:<port>]] [preshared-key <file-path>] [outfile <file-path>] [wireguard <dev> <peer> <extra_params>]
|
||||
Instructs {0} to exchange keys with the given peer and write the resulting PSK into the given output file.
|
||||
You must either specify the outfile or wireguard output option.
|
||||
|
||||
endpoint <ip>[:<port>]
|
||||
Specifies the address where the peer can be reached. This will be automatically updated after the first successful
|
||||
key exchange with the peer. If this is unspecified, the peer must initiate the connection.
|
||||
|
||||
preshared-key <file-path>
|
||||
You may specify a pre-shared key which will be mixed into the final secret.
|
||||
|
||||
outfile <file-path>
|
||||
You may specify a file to write the exchanged keys to. If this option is specified, {0} will
|
||||
write a notification to standard out every time the key is updated.
|
||||
|
||||
wireguard <dev> <peer> <extra_params>
|
||||
This allows you to directly specify a wireguard peer to deploy the pre-shared-key to.
|
||||
You may specify extra parameters you would pass to `wg set` besides the preshared-key parameter which is used by {0}.
|
||||
This makes it possible to add peers entirely from {0}.
|
||||
117
src/util.rs
117
src/util.rs
@@ -1,5 +1,5 @@
|
||||
//! Helper functions and macros
|
||||
|
||||
use anyhow::{ensure, Context, Result};
|
||||
use base64::{
|
||||
display::Base64Display as B64Display, read::DecoderReader as B64Reader,
|
||||
write::EncoderWriter as B64Writer,
|
||||
@@ -7,10 +7,14 @@ use base64::{
|
||||
use std::{
|
||||
borrow::{Borrow, BorrowMut},
|
||||
cmp::min,
|
||||
fs::{File, OpenOptions},
|
||||
io::{Read, Write},
|
||||
path::Path,
|
||||
time::{Duration, Instant},
|
||||
};
|
||||
|
||||
use crate::coloring::{Public, Secret};
|
||||
|
||||
#[inline]
|
||||
pub fn xor_into(a: &mut [u8], b: &[u8]) {
|
||||
assert!(a.len() == b.len());
|
||||
@@ -115,3 +119,114 @@ where
|
||||
f(&v);
|
||||
v
|
||||
}
|
||||
|
||||
/// load'n store
|
||||
|
||||
/// Open a file writable
|
||||
pub fn fopen_w<P: AsRef<Path>>(path: P) -> Result<File> {
|
||||
Ok(OpenOptions::new()
|
||||
.read(false)
|
||||
.write(true)
|
||||
.create(true)
|
||||
.truncate(true)
|
||||
.open(path)?)
|
||||
}
|
||||
/// Open a file readable
|
||||
pub fn fopen_r<P: AsRef<Path>>(path: P) -> Result<File> {
|
||||
Ok(OpenOptions::new()
|
||||
.read(true)
|
||||
.write(false)
|
||||
.create(false)
|
||||
.truncate(false)
|
||||
.open(path)?)
|
||||
}
|
||||
|
||||
pub trait ReadExactToEnd {
|
||||
fn read_exact_to_end(&mut self, buf: &mut [u8]) -> Result<()>;
|
||||
}
|
||||
|
||||
impl<R: Read> ReadExactToEnd for R {
|
||||
fn read_exact_to_end(&mut self, buf: &mut [u8]) -> Result<()> {
|
||||
let mut dummy = [0u8; 8];
|
||||
self.read_exact(buf)?;
|
||||
ensure!(self.read(&mut dummy)? == 0, "File too long!");
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
pub trait LoadValue {
|
||||
fn load<P: AsRef<Path>>(path: P) -> Result<Self>
|
||||
where
|
||||
Self: Sized;
|
||||
}
|
||||
|
||||
pub trait LoadValueB64 {
|
||||
fn load_b64<P: AsRef<Path>>(path: P) -> Result<Self>
|
||||
where
|
||||
Self: Sized;
|
||||
}
|
||||
|
||||
trait StoreValue {
|
||||
fn store<P: AsRef<Path>>(&self, path: P) -> Result<()>;
|
||||
}
|
||||
|
||||
trait StoreSecret {
|
||||
unsafe fn store_secret<P: AsRef<Path>>(&self, path: P) -> Result<()>;
|
||||
}
|
||||
|
||||
impl<T: StoreValue> StoreSecret for T {
|
||||
unsafe fn store_secret<P: AsRef<Path>>(&self, path: P) -> Result<()> {
|
||||
self.store(path)
|
||||
}
|
||||
}
|
||||
|
||||
impl<const N: usize> LoadValue for Secret<N> {
|
||||
fn load<P: AsRef<Path>>(path: P) -> Result<Self> {
|
||||
let mut v = Self::random();
|
||||
let p = path.as_ref();
|
||||
fopen_r(p)?
|
||||
.read_exact_to_end(v.secret_mut())
|
||||
.with_context(|| format!("Could not load file {p:?}"))?;
|
||||
Ok(v)
|
||||
}
|
||||
}
|
||||
|
||||
impl<const N: usize> LoadValueB64 for Secret<N> {
|
||||
fn load_b64<P: AsRef<Path>>(path: P) -> Result<Self> {
|
||||
let mut v = Self::random();
|
||||
let p = path.as_ref();
|
||||
// This might leave some fragments of the secret on the stack;
|
||||
// in practice this is likely not a problem because the stack likely
|
||||
// will be overwritten by something else soon but this is not exactly
|
||||
// guaranteed. It would be possible to remedy this, but since the secret
|
||||
// data will linger in the linux page cache anyways with the current
|
||||
// implementation, going to great length to erase the secret here is
|
||||
// not worth it right now.
|
||||
b64_reader(&mut fopen_r(p)?)
|
||||
.read_exact(v.secret_mut())
|
||||
.with_context(|| format!("Could not load base64 file {p:?}"))?;
|
||||
Ok(v)
|
||||
}
|
||||
}
|
||||
|
||||
impl<const N: usize> StoreSecret for Secret<N> {
|
||||
unsafe fn store_secret<P: AsRef<Path>>(&self, path: P) -> Result<()> {
|
||||
std::fs::write(path, self.secret())?;
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
impl<const N: usize> LoadValue for Public<N> {
|
||||
fn load<P: AsRef<Path>>(path: P) -> Result<Self> {
|
||||
let mut v = Self::random();
|
||||
fopen_r(path)?.read_exact_to_end(&mut *v)?;
|
||||
Ok(v)
|
||||
}
|
||||
}
|
||||
|
||||
impl<const N: usize> StoreValue for Public<N> {
|
||||
fn store<P: AsRef<Path>>(&self, path: P) -> Result<()> {
|
||||
std::fs::write(path, **self)?;
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
@@ -8,21 +8,21 @@ fn generate_keys() {
|
||||
let tmpdir = PathBuf::from(env!("CARGO_TARGET_TMPDIR")).join("keygen");
|
||||
fs::create_dir_all(&tmpdir).unwrap();
|
||||
|
||||
let priv_key_path = tmpdir.join("private-key");
|
||||
let pub_key_path = tmpdir.join("public-key");
|
||||
let secret_key_path = tmpdir.join("secret-key");
|
||||
let public_key_path = tmpdir.join("public-key");
|
||||
|
||||
let output = test_bin::get_test_bin(BIN)
|
||||
.args(["keygen", "private-key"])
|
||||
.arg(&priv_key_path)
|
||||
.arg("public-key")
|
||||
.arg(&pub_key_path)
|
||||
.args(["gen-keys", "--secret-key"])
|
||||
.arg(&secret_key_path)
|
||||
.arg("--public-key")
|
||||
.arg(&public_key_path)
|
||||
.output()
|
||||
.expect("Failed to start {BIN}");
|
||||
|
||||
assert_eq!(String::from_utf8_lossy(&output.stdout), "");
|
||||
|
||||
assert!(priv_key_path.is_file());
|
||||
assert!(pub_key_path.is_file());
|
||||
assert!(secret_key_path.is_file());
|
||||
assert!(public_key_path.is_file());
|
||||
|
||||
// cleanup
|
||||
fs::remove_dir_all(&tmpdir).unwrap();
|
||||
@@ -46,22 +46,22 @@ fn check_exchange() {
|
||||
let tmpdir = PathBuf::from(env!("CARGO_TARGET_TMPDIR")).join("exchange");
|
||||
fs::create_dir_all(&tmpdir).unwrap();
|
||||
|
||||
let priv_key_paths = [tmpdir.join("private-key-0"), tmpdir.join("private-key-1")];
|
||||
let pub_key_paths = [tmpdir.join("public-key-0"), tmpdir.join("public-key-1")];
|
||||
let secret_key_paths = [tmpdir.join("secret-key-0"), tmpdir.join("secret-key-1")];
|
||||
let public_key_paths = [tmpdir.join("public-key-0"), tmpdir.join("public-key-1")];
|
||||
let shared_key_paths = [tmpdir.join("shared-key-0"), tmpdir.join("shared-key-1")];
|
||||
|
||||
// generate key pairs
|
||||
for (priv_key_path, pub_key_path) in priv_key_paths.iter().zip(pub_key_paths.iter()) {
|
||||
for (secret_key_path, pub_key_path) in secret_key_paths.iter().zip(public_key_paths.iter()) {
|
||||
let output = test_bin::get_test_bin(BIN)
|
||||
.args(["keygen", "private-key"])
|
||||
.arg(&priv_key_path)
|
||||
.arg("public-key")
|
||||
.args(["gen-keys", "--secret-key"])
|
||||
.arg(&secret_key_path)
|
||||
.arg("--public-key")
|
||||
.arg(&pub_key_path)
|
||||
.output()
|
||||
.expect("Failed to start {BIN}");
|
||||
|
||||
assert_eq!(String::from_utf8_lossy(&output.stdout), "");
|
||||
assert!(priv_key_path.is_file());
|
||||
assert!(secret_key_path.is_file());
|
||||
assert!(pub_key_path.is_file());
|
||||
}
|
||||
|
||||
@@ -69,12 +69,12 @@ fn check_exchange() {
|
||||
let port = find_udp_socket();
|
||||
let listen_addr = format!("localhost:{port}");
|
||||
let mut server = test_bin::get_test_bin(BIN)
|
||||
.args(["exchange", "private-key"])
|
||||
.arg(&priv_key_paths[0])
|
||||
.args(["exchange", "secret-key"])
|
||||
.arg(&secret_key_paths[0])
|
||||
.arg("public-key")
|
||||
.arg(&pub_key_paths[0])
|
||||
.arg(&public_key_paths[0])
|
||||
.args(["listen", &listen_addr, "verbose", "peer", "public-key"])
|
||||
.arg(&pub_key_paths[1])
|
||||
.arg(&public_key_paths[1])
|
||||
.arg("outfile")
|
||||
.arg(&shared_key_paths[0])
|
||||
.stdout(Stdio::null())
|
||||
@@ -82,14 +82,16 @@ fn check_exchange() {
|
||||
.spawn()
|
||||
.expect("Failed to start {BIN}");
|
||||
|
||||
std::thread::sleep(Duration::from_millis(500));
|
||||
|
||||
// start second process, the client
|
||||
let mut client = test_bin::get_test_bin(BIN)
|
||||
.args(["exchange", "private-key"])
|
||||
.arg(&priv_key_paths[1])
|
||||
.args(["exchange", "secret-key"])
|
||||
.arg(&secret_key_paths[1])
|
||||
.arg("public-key")
|
||||
.arg(&pub_key_paths[1])
|
||||
.arg(&public_key_paths[1])
|
||||
.args(["verbose", "peer", "public-key"])
|
||||
.arg(&pub_key_paths[0])
|
||||
.arg(&public_key_paths[0])
|
||||
.args(["endpoint", &listen_addr])
|
||||
.arg("outfile")
|
||||
.arg(&shared_key_paths[1])
|
||||
|
||||
Reference in New Issue
Block a user