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ipv6 detection

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This commit is contained in:
John Smith 2023-10-15 11:27:31 -04:00
parent 3009aa66ce
commit 855b7eaf7d
5 changed files with 126 additions and 61 deletions
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4
veilid-core/src/network_manager/native/mod.rs
View File

@ -104,7 +104,7 @@ struct NetworkInner {
public_dial_info_check_punishment: Option<Box<dyn FnOnce() + Send + 'static>>,
/// udp socket record for bound-first sockets, which are used to guarantee a port is available before
/// creating a 'reuseport' socket there. we don't want to pick ports that other programs are using
bound_first_udp: BTreeMap<u16, Option<(socket2::Socket, socket2::Socket)>>,
bound_first_udp: BTreeMap<u16, (Option<socket2::Socket>, Option<socket2::Socket>)>,
/// mapping of protocol handlers to accept messages from a set of bound socket addresses
inbound_udp_protocol_handlers: BTreeMap<SocketAddr, RawUdpProtocolHandler>,
/// outbound udp protocol handler for udpv4
@ -113,7 +113,7 @@ struct NetworkInner {
outbound_udpv6_protocol_handler: Option<RawUdpProtocolHandler>,
/// tcp socket record for bound-first sockets, which are used to guarantee a port is available before
/// creating a 'reuseport' socket there. we don't want to pick ports that other programs are using
bound_first_tcp: BTreeMap<u16, Option<(socket2::Socket, socket2::Socket)>>,
bound_first_tcp: BTreeMap<u16, (Option<socket2::Socket>, Option<socket2::Socket>)>,
/// TLS handling socket controller
tls_acceptor: Option<TlsAcceptor>,
/// Multiplexer record for protocols on low level TCP sockets

112
veilid-core/src/network_manager/native/start_protocols.rs
View File

@ -85,37 +85,44 @@ impl Network {
if inner.bound_first_udp.contains_key(&udp_port) {
return true;
}
// Check for ipv6
let has_v6 = is_ipv6_supported();
// If the address is specified, only use the specified port and fail otherwise
let mut bound_first_socket_v4 = None;
let mut bound_first_socket_v6 = None;
if let Ok(bfs4) =
new_bound_first_udp_socket(SocketAddr::new(IpAddr::V4(Ipv4Addr::UNSPECIFIED), udp_port))
{
if let Ok(bfs6) = new_bound_first_udp_socket(SocketAddr::new(
IpAddr::V6(Ipv6Addr::UNSPECIFIED),
udp_port,
)) {
bound_first_socket_v4 = Some(bfs4);
bound_first_socket_v6 = Some(bfs6);
}
}
if let (Some(bfs4), Some(bfs6)) = (bound_first_socket_v4, bound_first_socket_v6) {
cfg_if! {
if #[cfg(windows)] {
// On windows, drop the socket. This is a race condition, but there's
// no way around it. This isn't for security anyway, it's to prevent multiple copies of the
// app from binding on the same port.
drop(bfs4);
drop(bfs6);
inner.bound_first_udp.insert(udp_port, None);
} else {
inner.bound_first_udp.insert(udp_port, Some((bfs4, bfs6)));
if has_v6 {
if let Ok(bfs6) = new_bound_first_udp_socket(SocketAddr::new(
IpAddr::V6(Ipv6Addr::UNSPECIFIED),
udp_port,
)) {
bound_first_socket_v4 = Some(bfs4);
bound_first_socket_v6 = Some(bfs6);
}
} else {
bound_first_socket_v4 = Some(bfs4);
}
true
} else {
false
}
if bound_first_socket_v4.is_none() && (has_v6 && bound_first_socket_v6.is_none()) {
return false;
}
cfg_if! {
if #[cfg(windows)] {
// On windows, drop the socket. This is a race condition, but there's
// no way around it. This isn't for security anyway, it's to prevent multiple copies of the
// app from binding on the same port.
inner.bound_first_udp.insert(udp_port, (None, None));
} else {
inner.bound_first_udp.insert(udp_port, (bound_first_socket_v4, bound_first_socket_v6));
}
}
true
}
fn bind_first_tcp_port(&self, tcp_port: u16) -> bool {
@ -123,37 +130,44 @@ impl Network {
if inner.bound_first_tcp.contains_key(&tcp_port) {
return true;
}
// Check for ipv6
let has_v6 = is_ipv6_supported();
// If the address is specified, only use the specified port and fail otherwise
let mut bound_first_socket_v4 = None;
let mut bound_first_socket_v6 = None;
if let Ok(bfs4) =
new_bound_first_tcp_socket(SocketAddr::new(IpAddr::V4(Ipv4Addr::UNSPECIFIED), tcp_port))
{
if let Ok(bfs6) = new_bound_first_tcp_socket(SocketAddr::new(
IpAddr::V6(Ipv6Addr::UNSPECIFIED),
tcp_port,
)) {
bound_first_socket_v4 = Some(bfs4);
bound_first_socket_v6 = Some(bfs6);
}
}
if let (Some(bfs4), Some(bfs6)) = (bound_first_socket_v4, bound_first_socket_v6) {
cfg_if! {
if #[cfg(windows)] {
// On windows, drop the socket. This is a race condition, but there's
// no way around it. This isn't for security anyway, it's to prevent multiple copies of the
// app from binding on the same port.
drop(bfs4);
drop(bfs6);
inner.bound_first_tcp.insert(tcp_port, None);
} else {
inner.bound_first_tcp.insert(tcp_port, Some((bfs4, bfs6)));
if has_v6 {
if let Ok(bfs6) = new_bound_first_tcp_socket(SocketAddr::new(
IpAddr::V6(Ipv6Addr::UNSPECIFIED),
tcp_port,
)) {
bound_first_socket_v4 = Some(bfs4);
bound_first_socket_v6 = Some(bfs6);
}
} else {
bound_first_socket_v4 = Some(bfs4);
}
true
} else {
false
}
if bound_first_socket_v4.is_none() && (has_v6 && bound_first_socket_v6.is_none()) {
return false;
}
cfg_if! {
if #[cfg(windows)] {
// On windows, drop the socket. This is a race condition, but there's
// no way around it. This isn't for security anyway, it's to prevent multiple copies of the
// app from binding on the same port.
inner.bound_first_tcp.insert(tcp_port, (None, None));
} else {
inner.bound_first_tcp.insert(tcp_port, (bound_first_socket_v4, bound_first_socket_v6));
}
}
true
}
pub(super) fn free_bound_first_ports(&self) {
@ -204,10 +218,7 @@ impl Network {
if listen_address.is_empty() {
// If listen address is empty, find us a port iteratively
let port = self.find_available_udp_port(5150)?;
let ip_addrs = vec![
IpAddr::V4(Ipv4Addr::UNSPECIFIED),
IpAddr::V6(Ipv6Addr::UNSPECIFIED),
];
let ip_addrs = available_unspecified_addresses();
Ok((port, ip_addrs))
} else {
// If no address is specified, but the port is, use ipv4 and ipv6 unspecified
@ -227,10 +238,7 @@ impl Network {
if listen_address.is_empty() {
// If listen address is empty, find us a port iteratively
let port = self.find_available_tcp_port(5150)?;
let ip_addrs = vec![
IpAddr::V4(Ipv4Addr::UNSPECIFIED),
IpAddr::V6(Ipv6Addr::UNSPECIFIED),
];
let ip_addrs = available_unspecified_addresses();
Ok((port, ip_addrs))
} else {
// If no address is specified, but the port is, use ipv4 and ipv6 unspecified

11
veilid-core/src/network_manager/wasm/mod.rs
View File

@ -345,9 +345,14 @@ impl Network {
outbound.insert(ProtocolType::WSS);
}
// XXX: See issue #92
let family_global = AddressTypeSet::from(AddressType::IPV4);
let family_local = AddressTypeSet::from(AddressType::IPV4);
let supported_address_types: AddressTypeSet = if is_ipv6_supported() {
AddressType::IPV4 | AddressType::IPV6
} else {
AddressType::IPV4.into()
};
let family_global = supported_address_types;
let family_local = supported_address_types;
let public_internet_capabilities = {
PUBLIC_INTERNET_CAPABILITIES

36
veilid-tools/src/tools.rs
View File

@ -239,13 +239,41 @@ pub fn compatible_unspecified_socket_addr(socket_addr: &SocketAddr) -> SocketAdd
}
}
cfg_if! {
if #[cfg(not(target_arch = "wasm32"))] {
use std::net::UdpSocket;
static IPV6_IS_SUPPORTED: Mutex<Option<bool>> = Mutex::new(None);
pub fn is_ipv6_supported() -> bool {
let mut opt_supp = IPV6_IS_SUPPORTED.lock();
if let Some(supp) = *opt_supp {
return supp;
}
// Not exhaustive but for our use case it should be sufficient. If no local ports are available for binding, Veilid isn't going to work anyway :P
let supp = UdpSocket::bind(SocketAddrV6::new(Ipv6Addr::LOCALHOST, 0, 0, 0)).is_ok();
*opt_supp = Some(supp);
supp
}
}
}
pub fn available_unspecified_addresses() -> Vec<IpAddr> {
if is_ipv6_supported() {
vec![
IpAddr::V4(Ipv4Addr::UNSPECIFIED),
IpAddr::V6(Ipv6Addr::UNSPECIFIED),
]
} else {
vec![IpAddr::V4(Ipv4Addr::UNSPECIFIED)]
}
}
pub fn listen_address_to_socket_addrs(listen_address: &str) -> Result<Vec<SocketAddr>, String> {
// If no address is specified, but the port is, use ipv4 and ipv6 unspecified
// If the address is specified, only use the specified port and fail otherwise
let ip_addrs = [
IpAddr::V4(Ipv4Addr::UNSPECIFIED),
IpAddr::V6(Ipv6Addr::UNSPECIFIED),
];
let ip_addrs = available_unspecified_addresses();
Ok(if let Some(portstr) = listen_address.strip_prefix(':') {
let port = portstr

24
veilid-tools/src/wasm.rs
View File

@ -1,3 +1,5 @@
#![cfg(target_arch = "wasm32")]
use super::*;
use core::sync::atomic::{AtomicI8, Ordering};
use js_sys::{global, Reflect};
@ -58,3 +60,25 @@ pub struct JsValueError(String);
pub fn map_jsvalue_error(x: JsValue) -> JsValueError {
JsValueError(x.as_string().unwrap_or_default())
}
static IPV6_IS_SUPPORTED: Mutex<Option<bool>> = Mutex::new(None);
pub fn is_ipv6_supported() -> bool {
let mut opt_supp = IPV6_IS_SUPPORTED.lock();
if let Some(supp) = *opt_supp {
return supp;
}
// let supp = match UdpSocket::bind(SocketAddrV6::new(Ipv6Addr::LOCALHOST, 0, 0, 0)) {
// Ok(_) => true,
// Err(e) => !matches!(
// e.kind(),
// std::io::ErrorKind::AddrNotAvailable | std::io::ErrorKind::Unsupported
// ),
// };
// XXX: See issue #92
let supp = false;
*opt_supp = Some(supp);
supp
}