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windows upnp work

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This commit is contained in:
John Smith
2023-10-13 17:57:38 -04:00
parent ebd36d82ef
commit d922bc1f5d
20 changed files with 138 additions and 111 deletions
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7
veilid-tools/Cargo.toml
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@@ -69,7 +69,7 @@ futures-util = { version = "0.3.28", default-features = false, features = [
chrono = "0.4.31"
libc = "0.2.148"
nix = { version = "0.27.1", features = [ "user" ] }
nix = { version = "0.27.1", features = ["user"] }
# Dependencies for WASM builds only
[target.'cfg(target_arch = "wasm32")'.dependencies]
@@ -93,9 +93,8 @@ paranoid-android = { version = "0.2.1", optional = true }
android_logger = "0.13.3"
# Dependencies for Windows
# [target.'cfg(target_os = "windows")'.dependencies]
# windows = { version = "^0", features = [ "Win32_NetworkManagement_Dns", "Win32_Foundation", "alloc" ]}
# windows-permissions = "^0"
[target.'cfg(target_os = "windows")'.dependencies]
winapi = { version = "0.3.9", features = ["iptypes", "iphlpapi"] }
# Dependencies for iOS
[target.'cfg(target_os = "ios")'.dependencies]

3
veilid-tools/src/lib.rs
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@@ -40,6 +40,7 @@ pub mod log_thru;
pub mod must_join_handle;
pub mod must_join_single_future;
pub mod mutable_future;
pub mod network_interfaces;
pub mod network_result;
pub mod random;
pub mod single_shot_eventual;
@@ -182,6 +183,8 @@ pub use must_join_single_future::*;
#[doc(inline)]
pub use mutable_future::*;
#[doc(inline)]
pub use network_interfaces::*;
#[doc(inline)]
pub use network_result::*;
#[doc(inline)]
pub use random::*;

516
veilid-tools/src/network_interfaces/apple.rs Normal file
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@@ -0,0 +1,516 @@
#![cfg(any(target_os = "macos", target_os = "ios"))]
#![allow(non_camel_case_types)]
use super::*;
use libc::{
close, freeifaddrs, getifaddrs, if_nametoindex, ifaddrs, ioctl, pid_t, sockaddr, sockaddr_in6,
socket, sysctl, time_t, AF_INET6, CTL_NET, IFF_BROADCAST, IFF_LOOPBACK, IFF_POINTOPOINT,
IFF_RUNNING, IFNAMSIZ, NET_RT_FLAGS, PF_ROUTE, RTAX_DST, RTAX_GATEWAY, RTAX_MAX, RTA_DST,
RTA_GATEWAY, RTF_GATEWAY, SOCK_DGRAM,
};
use sockaddr_tools::SockAddr;
use std::ffi::CStr;
use std::io;
use std::os::raw::{c_int, c_uchar, c_ulong, c_ushort, c_void};
const SIOCGIFAFLAG_IN6: c_ulong = 0xC1206949;
const SIOCGIFALIFETIME_IN6: c_ulong = 0xC1206951;
const IN6_IFF_TENTATIVE: c_ushort = 0x0002;
const IN6_IFF_DUPLICATED: c_ushort = 0x0004;
const IN6_IFF_DETACHED: c_ushort = 0x0008;
const IN6_IFF_AUTOCONF: c_ushort = 0x0040;
const IN6_IFF_TEMPORARY: c_ushort = 0x0080;
const IN6_IFF_DEPRECATED: c_ushort = 0x0010;
const IN6_IFF_DYNAMIC: c_ushort = 0x0100;
const IN6_IFF_SECURED: c_ushort = 0x0400;
macro_rules! set_name {
($name_field:expr, $name_str:expr) => {{
let name_c = &::std::ffi::CString::new($name_str.to_owned()).map_err(|_| {
::std::io::Error::new(
::std::io::ErrorKind::InvalidInput,
"malformed interface name",
)
})?;
let name_slice = name_c.as_bytes_with_nul();
if name_slice.len() > IFNAMSIZ {
return Err(io::Error::new(::std::io::ErrorKind::InvalidInput, ""));
}
$name_field[..name_slice.len()].clone_from_slice(name_slice);
Ok(())
}};
}
macro_rules! round_up {
($a:expr) => {
if $a > 0 {
1 + (($a - 1) | 3)
} else {
4
}
};
}
#[derive(Clone, Copy, Debug)]
#[repr(C)]
struct rt_msghdr {
rtm_msglen: c_ushort,
rtm_version: c_uchar,
rtm_type: c_uchar,
rtm_index: c_ushort,
rtm_flags: c_int,
rtm_addrs: c_int,
rtm_pid: pid_t,
rtm_seq: c_int,
rtm_errno: c_int,
rtm_use: c_int,
rtm_inits: u32,
rtm_rmx: rt_metrics,
}
#[derive(Clone, Copy, Debug)]
#[repr(C)]
struct rt_metrics {
rmx_locks: u32,
rmx_mtu: u32,
rmx_hopcount: u32,
rmx_expire: i32,
rmx_recvpipe: u32,
rmx_sendpipe: u32,
rmx_ssthresh: u32,
rmx_rtt: u32,
rmx_rttvar: u32,
rmx_pksent: u32,
rmx_state: u32,
rmx_filler: [u32; 3],
}
#[derive(Clone, Copy, Debug)]
#[repr(C)]
struct in6_addrlifetime {
ia6t_expire: time_t,
ia6t_preferred: time_t,
ia6t_vltime: u32,
ia6t_pltime: u32,
}
#[derive(Clone, Copy, Debug)]
#[repr(C)]
struct in6_ifstat {
ifs6_in_receive: u64,
ifs6_in_hdrerr: u64,
ifs6_in_toobig: u64,
ifs6_in_noroute: u64,
ifs6_in_addrerr: u64,
ifs6_in_protounknown: u64,
ifs6_in_truncated: u64,
ifs6_in_discard: u64,
ifs6_in_deliver: u64,
ifs6_out_forward: u64,
ifs6_out_request: u64,
ifs6_out_discard: u64,
ifs6_out_fragok: u64,
ifs6_out_fragfail: u64,
ifs6_out_fragcreat: u64,
ifs6_reass_reqd: u64,
ifs6_reass_ok: u64,
ifs6_atmfrag_rcvd: u64,
ifs6_reass_fail: u64,
ifs6_in_mcast: u64,
ifs6_out_mcast: u64,
ifs6_cantfoward_icmp6: u64,
ifs6_addr_expiry_cnt: u64,
ifs6_pfx_expiry_cnt: u64,
ifs6_defrtr_expiry_cnt: u64,
}
#[derive(Clone, Copy, Debug)]
#[repr(C)]
struct icmp6_ifstat {
ifs6_in_msg: u64,
ifs6_in_error: u64,
ifs6_in_dstunreach: u64,
ifs6_in_adminprohib: u64,
ifs6_in_timeexceed: u64,
ifs6_in_paramprob: u64,
ifs6_in_pkttoobig: u64,
ifs6_in_echo: u64,
ifs6_in_echoreply: u64,
ifs6_in_routersolicit: u64,
ifs6_in_routeradvert: u64,
ifs6_in_neighborsolicit: u64,
ifs6_in_neighboradvert: u64,
ifs6_in_redirect: u64,
ifs6_in_mldquery: u64,
ifs6_in_mldreport: u64,
ifs6_in_mlddone: u64,
ifs6_out_msg: u64,
ifs6_out_error: u64,
ifs6_out_dstunreach: u64,
ifs6_out_adminprohib: u64,
ifs6_out_timeexceed: u64,
ifs6_out_paramprob: u64,
ifs6_out_pkttoobig: u64,
ifs6_out_echo: u64,
ifs6_out_echoreply: u64,
ifs6_out_routersolicit: u64,
ifs6_out_routeradvert: u64,
ifs6_out_neighborsolicit: u64,
ifs6_out_neighboradvert: u64,
ifs6_out_redirect: u64,
ifs6_out_mldquery: u64,
ifs6_out_mldreport: u64,
ifs6_out_mlddone: u64,
}
#[derive(Clone, Copy)]
#[repr(C)]
union IfrIfru {
ifru_addr: sockaddr_in6,
ifru_dstaddr: sockaddr_in6,
ifru_flags: c_int,
ifru_flags6: c_int,
ifru_metric: c_int,
ifru_intval: c_int,
ifru_data: *mut c_uchar, // caddr_t
ifru_lifetime: in6_addrlifetime,
ifru_stat: in6_ifstat,
ifru_icmp6stat: icmp6_ifstat,
ifru_scope_id: [u32; 16],
}
#[derive(Clone)]
#[repr(C)]
struct in6_ifreq {
ifr_name: [c_uchar; IFNAMSIZ],
ifr_ifru: IfrIfru,
}
impl in6_ifreq {
pub fn from_name(name: &str) -> io::Result<Self> {
let mut req: in6_ifreq = unsafe { mem::zeroed() };
req.set_name(name)?;
Ok(req)
}
pub fn set_name(&mut self, name: &str) -> io::Result<()> {
set_name!(self.ifr_name, name)
}
pub fn set_addr(&mut self, addr: sockaddr_in6) {
self.ifr_ifru.ifru_addr = addr;
}
pub fn get_flags6(&self) -> c_ushort {
unsafe { self.ifr_ifru.ifru_flags6 as c_ushort }
}
pub fn get_ia6t_expire(&self) -> time_t {
unsafe { self.ifr_ifru.ifru_lifetime.ia6t_expire as time_t }
}
}
pub fn do_broadcast(ifaddr: &ifaddrs) -> Option<IpAddr> {
sockaddr_tools::to_ipaddr(ifaddr.ifa_dstaddr)
}
///////////////////////////////////////////////////
pub struct IfAddrs {
inner: *mut ifaddrs,
}
impl IfAddrs {
pub fn new() -> io::Result<Self> {
let mut ifaddrs = mem::MaybeUninit::uninit();
unsafe {
if -1 == getifaddrs(ifaddrs.as_mut_ptr()) {
return Err(io::Error::last_os_error());
}
Ok(Self {
inner: ifaddrs.assume_init(),
})
}
}
pub fn iter(&self) -> IfAddrsIterator {
IfAddrsIterator { next: self.inner }
}
}
impl Drop for IfAddrs {
#[allow(unsafe_code)]
fn drop(&mut self) {
unsafe {
freeifaddrs(self.inner);
}
}
}
pub struct IfAddrsIterator {
next: *mut ifaddrs,
}
impl Iterator for IfAddrsIterator {
type Item = ifaddrs;
#[allow(unsafe_code)]
fn next(&mut self) -> Option<Self::Item> {
if self.next.is_null() {
return None;
};
Some(unsafe {
let result = *self.next;
self.next = (*self.next).ifa_next;
result
})
}
}
///////////////////////////////////////////////////
pub struct PlatformSupportApple {
default_route_interfaces: BTreeSet<u32>,
}
impl PlatformSupportApple {
pub fn new() -> Self {
PlatformSupportApple {
default_route_interfaces: BTreeSet::new(),
}
}
async fn refresh_default_route_interfaces(&mut self) -> EyreResult<()> {
self.default_route_interfaces.clear();
let mut mib = [CTL_NET, PF_ROUTE, 0, 0, NET_RT_FLAGS, RTF_GATEWAY];
let mut sa_tab: [*const sockaddr; RTAX_MAX as usize] =
[std::ptr::null(); RTAX_MAX as usize];
let mut rt_buf_len = 0usize;
// Get memory size for mib result
if unsafe {
sysctl(
mib.as_mut_ptr(),
mib.len() as u32,
std::ptr::null_mut(),
&mut rt_buf_len as *mut usize,
std::ptr::null_mut(),
0,
)
} < 0
{
bail!("Unable to get memory size for routing table");
}
// Allocate a buffer
let mut rt_buf = vec![0u8; rt_buf_len];
// Get mib result
if unsafe {
sysctl(
mib.as_mut_ptr(),
mib.len() as u32,
rt_buf.as_mut_ptr() as *mut c_void,
&mut rt_buf_len as *mut usize,
std::ptr::null_mut(),
0,
)
} < 0
{
bail!("Unable to get memory size for routing table");
}
// Process each routing message
let mut mib_ptr = rt_buf.as_ptr();
let mib_end = unsafe { mib_ptr.add(rt_buf_len) };
while mib_ptr < mib_end {
let rt = mib_ptr as *const rt_msghdr;
let mut sa = unsafe { rt.add(1) } as *const sockaddr;
let rtm_addrs = unsafe { (*rt).rtm_addrs };
let intf_index = unsafe { (*rt).rtm_index } as u32;
// Fill in sockaddr table
(0..(RTAX_MAX as usize)).for_each(|i| {
if rtm_addrs & (1 << i) != 0 {
sa_tab[i] = sa;
sa = unsafe {
let sa_len = (*sa).sa_len;
sa = ((sa as *const u8).add(round_up!(sa_len as usize))) as *const sockaddr;
sa
};
}
});
// Look for gateways
if rtm_addrs & (RTA_DST | RTA_GATEWAY) == (RTA_DST | RTA_GATEWAY) {
// Only interested in AF_INET and AF_INET6 address families
// SockAddr::new() takes care of this for us
let saddr_dst = match SockAddr::new(sa_tab[RTAX_DST as usize]) {
Some(a) => a,
None => continue,
};
let _saddr_gateway = match SockAddr::new(sa_tab[RTAX_GATEWAY as usize]) {
Some(a) => a,
None => continue,
};
// Look for default gateways
let dst_ipaddr = match saddr_dst.as_ipaddr() {
Some(a) => a,
None => continue,
};
if dst_ipaddr.is_unspecified() {
self.default_route_interfaces.insert(intf_index);
}
}
mib_ptr = unsafe { mib_ptr.add((*rt).rtm_msglen.into()) };
}
Ok(())
}
fn get_interface_flags(&self, index: u32, flags: c_int) -> EyreResult<InterfaceFlags> {
Ok(InterfaceFlags {
is_loopback: (flags & IFF_LOOPBACK) != 0,
is_running: (flags & IFF_RUNNING) != 0,
is_point_to_point: (flags & IFF_POINTOPOINT) != 0,
has_default_route: self.default_route_interfaces.contains(&index),
})
}
fn get_address_flags(ifname: &str, addr: sockaddr_in6) -> EyreResult<AddressFlags> {
let sock = unsafe { socket(AF_INET6, SOCK_DGRAM, 0) };
if sock < 0 {
bail!("Socket error {:?}", io::Error::last_os_error());
}
let mut req = in6_ifreq::from_name(ifname).unwrap();
req.set_addr(addr);
let res = unsafe { ioctl(sock, SIOCGIFAFLAG_IN6, &mut req) };
if res < 0 {
unsafe { close(sock) };
bail!(
"SIOCGIFAFLAG_IN6 failed with error on device '{}': {:?}",
ifname,
io::Error::last_os_error()
);
}
let flags = req.get_flags6();
let mut req = in6_ifreq::from_name(ifname).unwrap();
req.set_addr(addr);
let res = unsafe { ioctl(sock, SIOCGIFALIFETIME_IN6, &mut req) };
unsafe { close(sock) };
if res < 0 {
bail!(
"SIOCGIFALIFETIME_IN6 failed with error on device '{}': {:?}",
ifname,
io::Error::last_os_error()
);
}
let expire = req.get_ia6t_expire();
let is_auto_generated_random_address =
flags & (IN6_IFF_SECURED | IN6_IFF_AUTOCONF) == (IN6_IFF_SECURED | IN6_IFF_AUTOCONF);
let is_temporary =
(flags & IN6_IFF_TEMPORARY) != 0 || (expire != 0 && is_auto_generated_random_address);
let is_dynamic = (flags & (IN6_IFF_DYNAMIC | IN6_IFF_AUTOCONF)) != 0;
let is_preferred = (flags
& (IN6_IFF_TENTATIVE | IN6_IFF_DUPLICATED | IN6_IFF_DETACHED | IN6_IFF_DEPRECATED))
== 0;
Ok(AddressFlags {
is_temporary,
is_dynamic,
is_preferred,
})
}
pub async fn get_interfaces(
&mut self,
interfaces: &mut BTreeMap<String, NetworkInterface>,
) -> io::Result<()> {
self.refresh_default_route_interfaces().await?;
// Ask for all the addresses we have
let ifaddrs = IfAddrs::new()?;
for ifaddr in ifaddrs.iter() {
// Get the interface name
let ifname = unsafe { CStr::from_ptr(ifaddr.ifa_name) }
.to_string_lossy()
.into_owned();
// Get the interface index
let ifindex = unsafe { if_nametoindex(ifaddr.ifa_name) };
// Map the name to a NetworkInterface
if !interfaces.contains_key(&ifname) {
// If we have no NetworkInterface yet, make one
let flags = self.get_interface_flags(ifindex, ifaddr.ifa_flags as c_int)?;
interfaces.insert(ifname.clone(), NetworkInterface::new(ifname.clone(), flags));
}
let intf = interfaces.get_mut(&ifname).unwrap();
let mut address_flags = AddressFlags::default();
let intf_addr = match sockaddr_tools::to_ipaddr(ifaddr.ifa_addr) {
None => continue,
Some(IpAddr::V4(ipv4_addr)) => {
let netmask = match sockaddr_tools::to_ipaddr(ifaddr.ifa_netmask) {
Some(IpAddr::V4(netmask)) => netmask,
_ => Ipv4Addr::new(0, 0, 0, 0),
};
let broadcast = if (ifaddr.ifa_flags & (IFF_BROADCAST as u32)) != 0 {
match do_broadcast(&ifaddr) {
Some(IpAddr::V4(broadcast)) => Some(broadcast),
_ => None,
}
} else {
None
};
IfAddr::V4(Ifv4Addr {
ip: ipv4_addr,
netmask,
broadcast,
})
}
Some(IpAddr::V6(ipv6_addr)) => {
let netmask = match sockaddr_tools::to_ipaddr(ifaddr.ifa_netmask) {
Some(IpAddr::V6(netmask)) => netmask,
_ => Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0),
};
// Get address flags for ipv6
address_flags = match Self::get_address_flags(
&ifname,
SockAddr::new(ifaddr.ifa_addr).unwrap().sa_in6(),
) {
Ok(v) => v,
Err(e) => {
log_net!(error "failed to get address flags: {}", e);
continue;
}
};
IfAddr::V6(Ifv6Addr {
ip: ipv6_addr,
netmask,
broadcast: None,
})
}
};
// Add to the list
intf.addrs
.push(InterfaceAddress::new(intf_addr, address_flags));
}
Ok(())
}
}

434
veilid-tools/src/network_interfaces/mod.rs Normal file
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@@ -0,0 +1,434 @@
mod apple;
mod netlink;
mod sockaddr_tools;
mod tools;
mod windows;
use crate::*;
cfg_if::cfg_if! {
if #[cfg(any(target_os = "linux", target_os = "android"))] {
use self::netlink::PlatformSupportNetlink as PlatformSupport;
} else if #[cfg(target_os = "windows")] {
use self::windows::PlatformSupportWindows as PlatformSupport;
} else if #[cfg(any(target_os = "macos", target_os = "ios"))] {
use self::apple::PlatformSupportApple as PlatformSupport;
} else {
compile_error!("No network interfaces support for this platform!");
}
}
#[derive(Debug, PartialEq, Eq, Ord, PartialOrd, Hash, Clone)]
pub enum IfAddr {
V4(Ifv4Addr),
V6(Ifv6Addr),
}
#[allow(dead_code)]
impl IfAddr {
pub fn ip(&self) -> IpAddr {
match *self {
IfAddr::V4(ref ifv4_addr) => IpAddr::V4(ifv4_addr.ip),
IfAddr::V6(ref ifv6_addr) => IpAddr::V6(ifv6_addr.ip),
}
}
pub fn netmask(&self) -> IpAddr {
match *self {
IfAddr::V4(ref ifv4_addr) => IpAddr::V4(ifv4_addr.netmask),
IfAddr::V6(ref ifv6_addr) => IpAddr::V6(ifv6_addr.netmask),
}
}
pub fn broadcast(&self) -> Option<IpAddr> {
match *self {
IfAddr::V4(ref ifv4_addr) => ifv4_addr.broadcast.map(IpAddr::V4),
IfAddr::V6(ref ifv6_addr) => ifv6_addr.broadcast.map(IpAddr::V6),
}
}
}
/// Details about the ipv4 address of an interface on this host.
#[derive(Debug, PartialEq, Eq, Ord, PartialOrd, Hash, Clone)]
pub struct Ifv4Addr {
/// The IP address of the interface.
pub ip: Ipv4Addr,
/// The netmask of the interface.
pub netmask: Ipv4Addr,
/// The broadcast address of the interface.
pub broadcast: Option<Ipv4Addr>,
}
/// Details about the ipv6 address of an interface on this host.
#[derive(Debug, PartialEq, Eq, Ord, PartialOrd, Hash, Clone)]
pub struct Ifv6Addr {
/// The IP address of the interface.
pub ip: Ipv6Addr,
/// The netmask of the interface.
pub netmask: Ipv6Addr,
/// The broadcast address of the interface.
pub broadcast: Option<Ipv6Addr>,
}
/// Some of the flags associated with an interface.
#[derive(Debug, Default, PartialEq, Eq, Ord, PartialOrd, Hash, Clone, Copy)]
pub struct InterfaceFlags {
pub is_loopback: bool,
pub is_running: bool,
pub is_point_to_point: bool,
pub has_default_route: bool,
}
/// Some of the flags associated with an address.
#[derive(Debug, Default, PartialEq, Eq, Ord, PartialOrd, Hash, Clone, Copy)]
pub struct AddressFlags {
// common flags
pub is_dynamic: bool,
// ipv6 flags
pub is_temporary: bool,
pub is_preferred: bool,
}
#[derive(PartialEq, Eq, Clone, Debug)]
pub struct InterfaceAddress {
if_addr: IfAddr,
flags: AddressFlags,
}
use core::cmp::Ordering;
// less is less preferable, greater is more preferable
impl Ord for InterfaceAddress {
fn cmp(&self, other: &Self) -> Ordering {
match (&self.if_addr, &other.if_addr) {
(IfAddr::V4(a), IfAddr::V4(b)) => {
// global scope addresses are better
let ret = ipv4addr_is_global(&a.ip).cmp(&ipv4addr_is_global(&b.ip));
if ret != Ordering::Equal {
return ret;
}
// local scope addresses are better
let ret = ipv4addr_is_private(&a.ip).cmp(&ipv4addr_is_private(&b.ip));
if ret != Ordering::Equal {
return ret;
}
// non-dynamic addresses are better
let ret = (!self.flags.is_dynamic).cmp(&!other.flags.is_dynamic);
if ret != Ordering::Equal {
return ret;
}
}
(IfAddr::V6(a), IfAddr::V6(b)) => {
// preferred addresses are better
let ret = self.flags.is_preferred.cmp(&other.flags.is_preferred);
if ret != Ordering::Equal {
return ret;
}
// non-temporary address are better
let ret = (!self.flags.is_temporary).cmp(&!other.flags.is_temporary);
if ret != Ordering::Equal {
return ret;
}
// global scope addresses are better
let ret = ipv6addr_is_global(&a.ip).cmp(&ipv6addr_is_global(&b.ip));
if ret != Ordering::Equal {
return ret;
}
// unique local unicast addresses are better
let ret = ipv6addr_is_unique_local(&a.ip).cmp(&ipv6addr_is_unique_local(&b.ip));
if ret != Ordering::Equal {
return ret;
}
// unicast site local addresses are better
let ret = ipv6addr_is_unicast_site_local(&a.ip)
.cmp(&ipv6addr_is_unicast_site_local(&b.ip));
if ret != Ordering::Equal {
return ret;
}
// unicast link local addresses are better
let ret = ipv6addr_is_unicast_link_local(&a.ip)
.cmp(&ipv6addr_is_unicast_link_local(&b.ip));
if ret != Ordering::Equal {
return ret;
}
// non-dynamic addresses are better
let ret = (!self.flags.is_dynamic).cmp(&!other.flags.is_dynamic);
if ret != Ordering::Equal {
return ret;
}
}
(IfAddr::V4(a), IfAddr::V6(b)) => {
// If the IPv6 address is preferred and not temporary, compare if it is global scope
if other.flags.is_preferred && !other.flags.is_temporary {
let ret = ipv4addr_is_global(&a.ip).cmp(&ipv6addr_is_global(&b.ip));
if ret != Ordering::Equal {
return ret;
}
}
// Default, prefer IPv4 because many IPv6 addresses are not actually routed
return Ordering::Greater;
}
(IfAddr::V6(a), IfAddr::V4(b)) => {
// If the IPv6 address is preferred and not temporary, compare if it is global scope
if self.flags.is_preferred && !self.flags.is_temporary {
let ret = ipv6addr_is_global(&a.ip).cmp(&ipv4addr_is_global(&b.ip));
if ret != Ordering::Equal {
return ret;
}
}
// Default, prefer IPv4 because many IPv6 addresses are not actually routed
return Ordering::Less;
}
}
// stable sort
let ret = self.if_addr.cmp(&other.if_addr);
if ret != Ordering::Equal {
return ret;
}
self.flags.cmp(&other.flags)
}
}
impl PartialOrd for InterfaceAddress {
fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
Some(self.cmp(other))
}
}
#[allow(dead_code)]
impl InterfaceAddress {
pub fn new(if_addr: IfAddr, flags: AddressFlags) -> Self {
Self { if_addr, flags }
}
pub fn if_addr(&self) -> &IfAddr {
&self.if_addr
}
pub fn is_temporary(&self) -> bool {
self.flags.is_temporary
}
pub fn is_dynamic(&self) -> bool {
self.flags.is_dynamic
}
pub fn is_preferred(&self) -> bool {
self.flags.is_preferred
}
}
// #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
// enum NetworkInterfaceType {
// Mobile, // Least preferable, usually metered and slow
// Unknown, // Everything else if we can't detect the type
// Wireless, // Wifi is usually free or cheap and medium speed
// Wired, // Wired is usually free or cheap and high speed
// }
#[derive(PartialEq, Eq, Clone)]
pub struct NetworkInterface {
pub name: String,
pub flags: InterfaceFlags,
pub addrs: Vec<InterfaceAddress>,
}
impl fmt::Debug for NetworkInterface {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.debug_struct("NetworkInterface")
.field("name", &self.name)
.field("flags", &self.flags)
.field("addrs", &self.addrs)
.finish()?;
if f.alternate() {
writeln!(f)?;
writeln!(f, "// primary_ipv4: {:?}", self.primary_ipv4())?;
writeln!(f, "// primary_ipv6: {:?}", self.primary_ipv6())?;
}
Ok(())
}
}
#[allow(dead_code)]
impl NetworkInterface {
pub fn new(name: String, flags: InterfaceFlags) -> Self {
Self {
name,
flags,
addrs: Vec::new(),
}
}
pub fn name(&self) -> String {
self.name.clone()
}
pub fn is_loopback(&self) -> bool {
self.flags.is_loopback
}
pub fn is_point_to_point(&self) -> bool {
self.flags.is_point_to_point
}
pub fn is_running(&self) -> bool {
self.flags.is_running
}
pub fn has_default_route(&self) -> bool {
self.flags.has_default_route
}
pub fn primary_ipv4(&self) -> Option<InterfaceAddress> {
let mut ipv4addrs: Vec<&InterfaceAddress> = self
.addrs
.iter()
.filter(|a| matches!(a.if_addr(), IfAddr::V4(_)))
.collect();
ipv4addrs.sort();
ipv4addrs.last().cloned().cloned()
}
pub fn primary_ipv6(&self) -> Option<InterfaceAddress> {
let mut ipv6addrs: Vec<&InterfaceAddress> = self
.addrs
.iter()
.filter(|a| matches!(a.if_addr(), IfAddr::V6(_)))
.collect();
ipv6addrs.sort();
ipv6addrs.last().cloned().cloned()
}
}
pub struct NetworkInterfacesInner {
valid: bool,
interfaces: BTreeMap<String, NetworkInterface>,
interface_address_cache: Vec<IpAddr>,
}
#[derive(Clone)]
pub struct NetworkInterfaces {
inner: Arc<Mutex<NetworkInterfacesInner>>,
}
impl fmt::Debug for NetworkInterfaces {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let inner = self.inner.lock();
f.debug_struct("NetworkInterfaces")
.field("valid", &inner.valid)
.field("interfaces", &inner.interfaces)
.finish()?;
if f.alternate() {
writeln!(f)?;
writeln!(
f,
"// stable_addresses: {:?}",
inner.interface_address_cache
)?;
}
Ok(())
}
}
impl Default for NetworkInterfaces {
fn default() -> Self {
Self::new()
}
}
impl NetworkInterfaces {
pub fn new() -> Self {
Self {
inner: Arc::new(Mutex::new(NetworkInterfacesInner {
valid: false,
interfaces: BTreeMap::new(),
interface_address_cache: Vec::new(),
})),
}
}
pub fn is_valid(&self) -> bool {
let inner = self.inner.lock();
inner.valid
}
pub fn clear(&self) {
let mut inner = self.inner.lock();
inner.interfaces.clear();
inner.interface_address_cache.clear();
inner.valid = false;
}
// returns false if refresh had no changes, true if changes were present
pub async fn refresh(&self) -> std::io::Result<bool> {
let mut last_interfaces = {
let mut last_interfaces = BTreeMap::<String, NetworkInterface>::new();
let mut platform_support = PlatformSupport::new();
platform_support
.get_interfaces(&mut last_interfaces)
.await?;
last_interfaces
};
let mut inner = self.inner.lock();
core::mem::swap(&mut inner.interfaces, &mut last_interfaces);
inner.valid = true;
if last_interfaces != inner.interfaces {
// get last address cache
let old_stable_addresses = inner.interface_address_cache.clone();
// redo the address cache
Self::cache_stable_addresses(&mut inner);
// See if our best addresses have changed
if old_stable_addresses != inner.interface_address_cache {
debug!(
"Network interface addresses changed: \nFrom: {:?}\n To: {:?}\n",
old_stable_addresses, inner.interface_address_cache
);
return Ok(true);
}
}
Ok(false)
}
pub fn with_interfaces<F, R>(&self, f: F) -> R
where
F: FnOnce(&BTreeMap<String, NetworkInterface>) -> R,
{
let inner = self.inner.lock();
f(&inner.interfaces)
}
pub fn stable_addresses(&self) -> Vec<IpAddr> {
let inner = self.inner.lock();
inner.interface_address_cache.clone()
}
/////////////////////////////////////////////
fn cache_stable_addresses(inner: &mut NetworkInterfacesInner) {
// Reduce interfaces to their best routable ip addresses
let mut intf_addrs = Vec::new();
for intf in inner.interfaces.values() {
if !intf.is_running()
|| !intf.has_default_route()
|| intf.is_loopback()
|| intf.is_point_to_point()
{
continue;
}
if let Some(pipv4) = intf.primary_ipv4() {
// Skip temporary addresses because they're going to change
if !pipv4.is_temporary() {
intf_addrs.push(pipv4);
}
}
if let Some(pipv6) = intf.primary_ipv6() {
// Skip temporary addresses because they're going to change
if !pipv6.is_temporary() {
intf_addrs.push(pipv6);
}
}
}
// Sort one more time to get the best interface addresses overall
intf_addrs.sort();
// Now export just the addresses
inner.interface_address_cache = intf_addrs.iter().map(|x| x.if_addr().ip()).collect()
}
}

335
veilid-tools/src/network_interfaces/netlink.rs Normal file
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#![cfg(any(target_os = "linux", target_os = "android"))]
use super::*;
use alloc::collections::btree_map::Entry;
use futures_util::stream::TryStreamExt;
use ifstructs::ifreq;
use libc::{
close, if_indextoname, ioctl, socket, IFF_LOOPBACK, IFF_POINTOPOINT, IFF_RUNNING, IF_NAMESIZE,
SIOCGIFFLAGS, SOCK_DGRAM,
};
use netlink_packet_route::{
nlas::address::Nla, AddressMessage, AF_INET, AF_INET6, IFA_F_DADFAILED, IFA_F_DEPRECATED,
IFA_F_OPTIMISTIC, IFA_F_PERMANENT, IFA_F_TEMPORARY, IFA_F_TENTATIVE,
};
use rtnetlink::{new_connection_with_socket, Handle, IpVersion};
cfg_if! {
if #[cfg(feature="rt-async-std")] {
use netlink_sys::{SmolSocket as RTNetLinkSocket};
} else if #[cfg(feature="rt-tokio")] {
use netlink_sys::{TokioSocket as RTNetLinkSocket};
} else {
compile_error!("needs executor implementation")
}
}
use std::convert::TryInto;
use std::ffi::CStr;
use std::io;
use std::os::raw::c_int;
use tools::*;
fn get_interface_name(index: u32) -> io::Result<String> {
let mut ifnamebuf = [0u8; (IF_NAMESIZE + 1)];
cfg_if! {
if #[cfg(all(any(target_os = "android", target_os="linux"), any(target_arch = "arm", target_arch = "aarch64")))] {
if unsafe { if_indextoname(index, ifnamebuf.as_mut_ptr()) }.is_null() {
bail!("if_indextoname returned null");
}
} else {
if unsafe { if_indextoname(index, ifnamebuf.as_mut_ptr() as *mut i8) }.is_null() {
bail!("if_indextoname returned null");
}
}
}
let ifnamebuflen = ifnamebuf
.iter()
.position(|c| *c == 0u8)
.ok_or_else(|| eyre!("null not found in interface name"))?;
let ifname_str = CStr::from_bytes_with_nul(&ifnamebuf[0..=ifnamebuflen])
.wrap_err("failed to convert interface name")?
.to_str()
.wrap_err("invalid characters in interface name")?;
Ok(ifname_str.to_owned())
}
fn flags_to_address_flags(flags: u32) -> AddressFlags {
AddressFlags {
is_temporary: (flags & IFA_F_TEMPORARY) != 0,
is_dynamic: (flags & IFA_F_PERMANENT) == 0,
is_preferred: (flags
& (IFA_F_TENTATIVE | IFA_F_DADFAILED | IFA_F_DEPRECATED | IFA_F_OPTIMISTIC))
== 0,
}
}
pub struct PlatformSupportNetlink {
connection_jh: Option<MustJoinHandle<()>>,
handle: Option<Handle>,
default_route_interfaces: BTreeSet<u32>,
}
impl PlatformSupportNetlink {
pub fn new() -> Self {
PlatformSupportNetlink {
connection_jh: None,
handle: None,
default_route_interfaces: BTreeSet::new(),
}
}
// Figure out which interfaces have default routes
async fn refresh_default_route_interfaces(&mut self) -> EyreResult<()> {
self.default_route_interfaces.clear();
let mut routesv4 = self
.handle
.as_ref()
.unwrap()
.route()
.get(IpVersion::V4)
.execute();
while let Some(routev4) = routesv4.try_next().await.unwrap_or_default() {
if let Some(index) = routev4.output_interface() {
//println!("*** ipv4 route: {:#?}", routev4);
if routev4.header.destination_prefix_length == 0 {
self.default_route_interfaces.insert(index);
}
}
}
let mut routesv6 = self
.handle
.as_ref()
.unwrap()
.route()
.get(IpVersion::V6)
.execute();
while let Some(routev6) = routesv6.try_next().await.unwrap_or_default() {
if let Some(index) = routev6.output_interface() {
//println!("*** ipv6 route: {:#?}", routev6);
if routev6.header.destination_prefix_length == 0 {
self.default_route_interfaces.insert(index);
}
}
}
Ok(())
}
fn get_interface_flags(&self, index: u32, ifname: &str) -> EyreResult<InterfaceFlags> {
let mut req = ifreq::from_name(ifname).wrap_err("failed to convert interface name")?;
let sock = unsafe { socket(AF_INET as i32, SOCK_DGRAM, 0) };
if sock < 0 {
return Err(io::Error::last_os_error()).wrap_err("failed to create socket");
}
cfg_if! {
if #[cfg(any(target_os = "android", target_env = "musl"))] {
let res = unsafe { ioctl(sock, SIOCGIFFLAGS as i32, &mut req) };
} else {
let res = unsafe { ioctl(sock, SIOCGIFFLAGS, &mut req) };
}
}
unsafe { close(sock) };
if res < 0 {
return Err(io::Error::last_os_error()).wrap_err("failed to close socket");
}
let flags = req.get_flags() as c_int;
Ok(InterfaceFlags {
is_loopback: (flags & IFF_LOOPBACK) != 0,
is_running: (flags & IFF_RUNNING) != 0,
is_point_to_point: (flags & IFF_POINTOPOINT) != 0,
has_default_route: self.default_route_interfaces.contains(&index),
})
}
fn process_address_message_v4(msg: AddressMessage) -> Option<InterfaceAddress> {
// Get ip address
let ip = msg.nlas.iter().find_map(|nla| {
if let Nla::Address(a) = nla {
let a: Option<[u8; 4]> = a.clone().try_into().ok();
a.map(Ipv4Addr::from)
} else {
None
}
})?;
// get netmask
let plen = msg.header.prefix_len as i16;
let mut netmask = [0u8; 4];
get_netmask_from_prefix_length_v4(&mut netmask, plen);
let netmask = Ipv4Addr::from(netmask);
// get broadcast address
let broadcast = msg.nlas.iter().find_map(|nla| {
if let Nla::Broadcast(b) = nla {
let b: Option<[u8; 4]> = b.clone().try_into().ok();
b.map(Ipv4Addr::from)
} else {
None
}
});
// get address flags
let flags = msg
.nlas
.iter()
.find_map(|nla| {
if let Nla::Flags(f) = nla {
Some(*f)
} else {
None
}
})
.unwrap_or(msg.header.flags as u32);
Some(InterfaceAddress::new(
IfAddr::V4(Ifv4Addr {
ip,
/// The netmask of the interface.
netmask,
/// The broadcast address of the interface.
broadcast,
}),
flags_to_address_flags(flags),
))
}
fn process_address_message_v6(msg: AddressMessage) -> Option<InterfaceAddress> {
// Get ip address
let ip = msg.nlas.iter().find_map(|nla| {
if let Nla::Address(a) = nla {
let a: Option<[u8; 16]> = a.clone().try_into().ok();
a.map(Ipv6Addr::from)
} else {
None
}
})?;
// get netmask
let plen = msg.header.prefix_len as i16;
let mut netmask = [0u8; 16];
get_netmask_from_prefix_length_v6(&mut netmask, plen);
let netmask = Ipv6Addr::from(netmask);
// get address flags
let flags = msg
.nlas
.iter()
.find_map(|nla| {
if let Nla::Flags(f) = nla {
Some(*f)
} else {
None
}
})
.unwrap_or(msg.header.flags as u32);
// Skip addresses going through duplicate address detection, or ones that have failed it
if ((flags & IFA_F_TENTATIVE) != 0) || ((flags & IFA_F_DADFAILED) != 0) {
return None;
}
Some(InterfaceAddress::new(
IfAddr::V6(Ifv6Addr {
ip,
/// The netmask of the interface.
netmask,
/// The broadcast address of the interface.
broadcast: None,
}),
flags_to_address_flags(flags),
))
}
async fn get_interfaces_internal(
&mut self,
interfaces: &mut BTreeMap<String, NetworkInterface>,
) -> io::Result<()> {
// Refresh the routes
self.refresh_default_route_interfaces().await?;
// Ask for all the addresses we have
let mut names = BTreeMap::<u32, String>::new();
let mut addresses = self.handle.as_ref().unwrap().address().get().execute();
while let Some(msg) = addresses.try_next().await? {
// Have we seen this interface index yet?
// Get the name from the index, cached, if we can
let ifname = match names.entry(msg.header.index) {
Entry::Vacant(v) => {
// If not, get the name for the index if we can
let ifname = match get_interface_name(msg.header.index) {
Ok(v) => v,
Err(e) => {
log_net!(warn
"couldn't get interface name for index {}: {}",
msg.header.index,
e
);
continue;
}
};
v.insert(ifname).clone()
}
Entry::Occupied(o) => o.get().clone(),
};
// Map the name to a NetworkInterface
if !interfaces.contains_key(&ifname) {
// If we have no NetworkInterface yet, make one
let flags = self.get_interface_flags(msg.header.index, &ifname)?;
interfaces.insert(ifname.clone(), NetworkInterface::new(ifname.clone(), flags));
}
let intf = interfaces.get_mut(&ifname).unwrap();
// Process the address
let intf_addr = match msg.header.family as u16 {
AF_INET => match Self::process_address_message_v4(msg) {
Some(ia) => ia,
None => {
continue;
}
},
AF_INET6 => match Self::process_address_message_v6(msg) {
Some(ia) => ia,
None => {
continue;
}
},
_ => {
continue;
}
};
intf.addrs.push(intf_addr);
}
Ok(())
}
pub async fn get_interfaces(
&mut self,
interfaces: &mut BTreeMap<String, NetworkInterface>,
) -> io::Result<()> {
// Get the netlink connection
let (connection, handle, _) = new_connection_with_socket::<RTNetLinkSocket>()?;
// Spawn a connection handler
let connection_jh = spawn(connection);
// Save the connection
self.connection_jh = Some(connection_jh);
self.handle = Some(handle);
// Do the work
let out = self.get_interfaces_internal(interfaces).await;
// Clean up connection
drop(self.handle.take());
self.connection_jh.take().unwrap().abort().await;
out
}
}

103
veilid-tools/src/network_interfaces/sockaddr_tools.rs Normal file
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// Copyright 2018 MaidSafe.net limited.
//
// This SAFE Network Software is licensed to you under the MIT license <LICENSE-MIT
// http://opensource.org/licenses/MIT> or the Modified BSD license <LICENSE-BSD
// https://opensource.org/licenses/BSD-3-Clause>, at your option. This file may not be copied,
// modified, or distributed except according to those terms. Please review the Licences for the
// specific language governing permissions and limitations relating to use of the SAFE Network
// Software.
#[cfg(not(windows))]
use libc::{sockaddr, sockaddr_in, sockaddr_in6, AF_INET, AF_INET6};
use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
use std::ptr::NonNull;
#[cfg(windows)]
use winapi::{
shared::ws2def::{AF_INET, AF_INET6, SOCKADDR as sockaddr, SOCKADDR_IN as sockaddr_in},
shared::ws2ipdef::SOCKADDR_IN6 as sockaddr_in6,
};
pub fn to_ipaddr(sockaddr: *const sockaddr) -> Option<IpAddr> {
if sockaddr.is_null() {
return None;
}
SockAddr::new(sockaddr)?.as_ipaddr()
}
pub enum SockAddrIn {
In(sockaddr_in),
In6(sockaddr_in6),
}
// Wrapper around a sockaddr pointer. Guaranteed to not be null.
pub struct SockAddr {
inner: NonNull<sockaddr>,
}
impl SockAddr {
#[allow(clippy::new_ret_no_self)]
pub fn new(sockaddr: *const sockaddr) -> Option<Self> {
NonNull::new(sockaddr as *mut _).map(|inner| Self { inner })
}
#[cfg(not(windows))]
pub fn as_ipaddr(&self) -> Option<IpAddr> {
match self.sockaddr_in() {
Some(SockAddrIn::In(sa)) => Some(IpAddr::V4(Ipv4Addr::new(
((sa.sin_addr.s_addr) & 255) as u8,
((sa.sin_addr.s_addr >> 8) & 255) as u8,
((sa.sin_addr.s_addr >> 16) & 255) as u8,
((sa.sin_addr.s_addr >> 24) & 255) as u8,
))),
Some(SockAddrIn::In6(sa)) => Some(IpAddr::V6(Ipv6Addr::from(sa.sin6_addr.s6_addr))),
None => None,
}
}
#[cfg(windows)]
pub fn as_ipaddr(&self) -> Option<IpAddr> {
match self.sockaddr_in() {
Some(SockAddrIn::In(sa)) => {
let s_addr = unsafe { sa.sin_addr.S_un.S_addr() };
Some(IpAddr::V4(Ipv4Addr::new(
(s_addr & 255u32) as u8,
((s_addr >> 8) & 255u32) as u8,
((s_addr >> 16) & 255u32) as u8,
((s_addr >> 24) & 255u32) as u8,
)))
}
Some(SockAddrIn::In6(sa)) => {
let s6_addr = unsafe { sa.sin6_addr.u.Byte() };
Some(IpAddr::V6(Ipv6Addr::from(*s6_addr)))
}
None => None,
}
}
pub fn sockaddr_in(&self) -> Option<SockAddrIn> {
const AF_INET_U32: u32 = AF_INET as u32;
const AF_INET6_U32: u32 = AF_INET6 as u32;
match self.sa_family() {
AF_INET_U32 => Some(SockAddrIn::In(self.sa_in())),
AF_INET6_U32 => Some(SockAddrIn::In6(self.sa_in6())),
_ => None,
}
}
#[allow(unsafe_code)]
pub fn sa_family(&self) -> u32 {
unsafe { u32::from(self.inner.as_ref().sa_family) }
}
#[allow(unsafe_code)]
#[allow(clippy::cast_ptr_alignment)]
pub fn sa_in(&self) -> sockaddr_in {
unsafe { *(self.inner.as_ptr() as *const sockaddr_in) }
}
#[allow(unsafe_code)]
#[allow(clippy::cast_ptr_alignment)]
pub fn sa_in6(&self) -> sockaddr_in6 {
unsafe { *(self.inner.as_ptr() as *const sockaddr_in6) }
}
}

47
veilid-tools/src/network_interfaces/tools.rs Normal file
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#![allow(dead_code)]
pub fn convert_to_unsigned_4(x: [i8; 4]) -> [u8; 4] {
let mut out: [u8; 4] = [0u8; 4];
for i in 0..4 {
out[i] = x[i] as u8;
}
out
}
pub fn convert_to_unsigned_16(x: [i8; 16]) -> [u8; 16] {
let mut out: [u8; 16] = [0u8; 16];
for i in 0..16 {
out[i] = x[i] as u8;
}
out
}
pub fn get_netmask_from_prefix_length_v4(out: &mut [u8; 4], mut plen: i16) {
for outb in out.iter_mut() {
*outb = if plen >= 8 {
plen -= 8;
255u8
} else if plen <= 0 {
0u8
} else {
let v = 255u8 << (8 - plen);
plen = 0;
v
}
}
}
pub fn get_netmask_from_prefix_length_v6(out: &mut [u8; 16], mut plen: i16) {
for outb in out.iter_mut() {
*outb = if plen >= 8 {
plen -= 8;
255u8
} else if plen == 0 {
0u8
} else {
let v = 255u8 << (8 - plen);
plen = 0;
v
}
}
}

357
veilid-tools/src/network_interfaces/windows.rs Normal file
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#![cfg(target_os = "windows")]
// Copyright 2018 MaidSafe.net limited.
//
// This SAFE Network Software is licensed to you under the MIT license <LICENSE-MIT
// http://opensource.org/licenses/MIT> or the Modified BSD license <LICENSE-BSD
// https://opensource.org/licenses/BSD-3-Clause>, at your option. This file may not be copied,
// modified, or distributed except according to those terms. Please review the Licences for the
// specific language governing permissions and limitations relating to use of the SAFE Network
// Software.
use super::*;
use libc::{self, c_ulong, c_void, size_t};
use std::ffi::CStr;
use std::{io, ptr};
use winapi::shared::ifdef::IfOperStatusUp;
use winapi::shared::ipifcons::{IF_TYPE_SOFTWARE_LOOPBACK, IF_TYPE_TUNNEL};
use winapi::shared::nldef::{
IpDadStatePreferred, IpPrefixOriginDhcp, IpSuffixOriginDhcp, IpSuffixOriginRandom,
};
use winapi::shared::winerror::{ERROR_BUFFER_OVERFLOW, ERROR_SUCCESS};
use winapi::um::iphlpapi::GetAdaptersAddresses;
use winapi::um::iptypes::{
GAA_FLAG_INCLUDE_GATEWAYS, GAA_FLAG_INCLUDE_PREFIX, GAA_FLAG_SKIP_ANYCAST,
GAA_FLAG_SKIP_DNS_SERVER, GAA_FLAG_SKIP_FRIENDLY_NAME, GAA_FLAG_SKIP_MULTICAST,
IP_ADAPTER_ADDRESSES, IP_ADAPTER_PREFIX, IP_ADAPTER_UNICAST_ADDRESS,
};
pub struct PlatformSupportWindows {}
impl PlatformSupportWindows {
pub fn new() -> Self {
PlatformSupportWindows {}
}
fn get_interface_flags(intf: &IpAdapterAddresses) -> InterfaceFlags {
InterfaceFlags {
is_loopback: intf.get_flag_loopback(),
is_running: intf.get_flag_running(),
is_point_to_point: intf.get_flag_point_to_point(),
has_default_route: intf.get_has_default_route(),
}
}
fn get_address_flags(addr: *const IP_ADAPTER_UNICAST_ADDRESS) -> AddressFlags {
let ds = unsafe { (*addr).DadState };
let po = unsafe { (*addr).PrefixOrigin };
let so = unsafe { (*addr).SuffixOrigin };
AddressFlags {
is_temporary: so == IpSuffixOriginRandom,
is_dynamic: po == IpPrefixOriginDhcp || so == IpSuffixOriginDhcp,
is_preferred: ds == IpDadStatePreferred,
}
}
pub async fn get_interfaces(
&mut self,
interfaces: &mut BTreeMap<String, NetworkInterface>,
) -> io::Result<()> {
// Iterate all the interfaces
let windows_interfaces = WindowsInterfaces::new()?;
for windows_interface in windows_interfaces.iter() {
// Get name
let intf_name = windows_interface.name();
// Get flags
let flags = Self::get_interface_flags(&windows_interface);
let mut network_interface = NetworkInterface::new(intf_name.clone(), flags);
// Go through all addresses and add them if appropriate
for addr in windows_interface.unicast_addresses() {
let intf_addr = match sockaddr_tools::to_ipaddr(addr.Address.lpSockaddr) {
None => continue,
Some(IpAddr::V4(ipv4_addr)) => {
let mut item_netmask = Ipv4Addr::new(0, 0, 0, 0);
let mut item_broadcast = None;
// Search prefixes for a prefix matching addr
'prefixloopv4: for prefix in windows_interface.prefixes() {
let ipprefix = sockaddr_tools::to_ipaddr(prefix.Address.lpSockaddr);
match ipprefix {
Some(IpAddr::V4(ref a)) => {
let mut netmask: [u8; 4] = [0; 4];
for (n, netmask_elt) in netmask
.iter_mut()
.enumerate()
.take((prefix.PrefixLength as usize + 7) / 8)
{
let x_byte = ipv4_addr.octets()[n];
let y_byte = a.octets()[n];
for m in 0..8 {
if (n * 8) + m > prefix.PrefixLength as usize {
break;
}
let bit = 1 << m;
if (x_byte & bit) == (y_byte & bit) {
*netmask_elt |= bit;
} else {
continue 'prefixloopv4;
}
}
}
item_netmask = Ipv4Addr::new(
netmask[0], netmask[1], netmask[2], netmask[3],
);
let mut broadcast: [u8; 4] = ipv4_addr.octets();
for n in 0..4 {
broadcast[n] |= !netmask[n];
}
item_broadcast = Some(Ipv4Addr::new(
broadcast[0],
broadcast[1],
broadcast[2],
broadcast[3],
));
break 'prefixloopv4;
}
_ => continue,
};
}
IfAddr::V4(Ifv4Addr {
ip: ipv4_addr,
netmask: item_netmask,
broadcast: item_broadcast,
})
}
Some(IpAddr::V6(ipv6_addr)) => {
let mut item_netmask = Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0);
// Search prefixes for a prefix matching addr
'prefixloopv6: for prefix in windows_interface.prefixes() {
let ipprefix = sockaddr_tools::to_ipaddr(prefix.Address.lpSockaddr);
match ipprefix {
Some(IpAddr::V6(ref a)) => {
// Iterate the bits in the prefix, if they all match this prefix
// is the right one, else try the next prefix
let mut netmask: [u16; 8] = [0; 8];
for (n, netmask_elt) in netmask
.iter_mut()
.enumerate()
.take((prefix.PrefixLength as usize + 15) / 16)
{
let x_word = ipv6_addr.segments()[n];
let y_word = a.segments()[n];
for m in 0..16 {
if (n * 16) + m > prefix.PrefixLength as usize {
break;
}
let bit = 1 << m;
if (x_word & bit) == (y_word & bit) {
*netmask_elt |= bit;
} else {
continue 'prefixloopv6;
}
}
}
item_netmask = Ipv6Addr::new(
netmask[0], netmask[1], netmask[2], netmask[3], netmask[4],
netmask[5], netmask[6], netmask[7],
);
break 'prefixloopv6;
}
_ => continue,
};
}
IfAddr::V6(Ifv6Addr {
ip: ipv6_addr,
netmask: item_netmask,
broadcast: None,
})
}
};
let address_flags = Self::get_address_flags(addr);
network_interface
.addrs
.push(InterfaceAddress::new(intf_addr, address_flags))
}
interfaces.insert(intf_name, network_interface);
}
Ok(())
}
}
#[repr(C)]
pub struct IpAdapterAddresses {
data: *const IP_ADAPTER_ADDRESSES,
}
impl IpAdapterAddresses {
#[allow(unsafe_code)]
pub fn name(&self) -> String {
unsafe { CStr::from_ptr((*self.data).AdapterName) }
.to_string_lossy()
.into_owned()
}
pub fn prefixes(&self) -> PrefixesIterator {
PrefixesIterator {
_phantom: std::marker::PhantomData {},
next: unsafe { (*self.data).FirstPrefix },
}
}
pub fn unicast_addresses(&self) -> UnicastAddressesIterator {
UnicastAddressesIterator {
_phantom: std::marker::PhantomData {},
next: unsafe { (*self.data).FirstUnicastAddress },
}
}
pub fn get_flag_loopback(&self) -> bool {
unsafe { (*self.data).IfType == IF_TYPE_SOFTWARE_LOOPBACK }
}
pub fn get_flag_running(&self) -> bool {
unsafe { (*self.data).OperStatus == IfOperStatusUp }
}
pub fn get_flag_point_to_point(&self) -> bool {
unsafe { (*self.data).IfType == IF_TYPE_TUNNEL }
}
pub fn get_has_default_route(&self) -> bool {
unsafe { !(*self.data).FirstGatewayAddress.is_null() }
}
}
struct WindowsInterfaces {
data: *const IP_ADAPTER_ADDRESSES,
}
impl WindowsInterfaces {
pub fn new() -> io::Result<Self> {
let mut buffersize: c_ulong = 16384;
let mut ifaddrs: *mut IP_ADAPTER_ADDRESSES;
loop {
unsafe {
ifaddrs = libc::malloc(buffersize as size_t) as *mut IP_ADAPTER_ADDRESSES;
if ifaddrs.is_null() {
panic!("Failed to allocate buffer in get_if_addrs()");
}
let retcode = GetAdaptersAddresses(
0,
GAA_FLAG_SKIP_ANYCAST
| GAA_FLAG_SKIP_MULTICAST
| GAA_FLAG_SKIP_DNS_SERVER
| GAA_FLAG_INCLUDE_PREFIX
| GAA_FLAG_SKIP_FRIENDLY_NAME
| GAA_FLAG_INCLUDE_GATEWAYS,
ptr::null_mut(),
ifaddrs,
&mut buffersize,
);
match retcode {
ERROR_SUCCESS => break,
ERROR_BUFFER_OVERFLOW => {
libc::free(ifaddrs as *mut c_void);
buffersize *= 2;
continue;
}
_ => return Err(io::Error::last_os_error()),
}
}
}
Ok(Self { data: ifaddrs })
}
pub fn iter(&self) -> WindowsInterfacesIterator<'_> {
WindowsInterfacesIterator {
next: self.data,
_phantom: std::marker::PhantomData {},
}
}
}
impl Drop for WindowsInterfaces {
fn drop(&mut self) {
unsafe {
libc::free(self.data as *mut c_void);
}
}
}
pub struct WindowsInterfacesIterator<'a> {
next: *const IP_ADAPTER_ADDRESSES,
_phantom: std::marker::PhantomData<&'a u8>,
}
impl<'a> Iterator for WindowsInterfacesIterator<'a> {
type Item = IpAdapterAddresses;
#[allow(unsafe_code)]
fn next(&mut self) -> Option<Self::Item> {
if self.next.is_null() {
return None;
};
Some(unsafe {
let result = &*self.next;
self.next = (*self.next).Next;
IpAdapterAddresses { data: result }
})
}
}
pub struct PrefixesIterator<'a> {
_phantom: std::marker::PhantomData<&'a u8>,
next: *const IP_ADAPTER_PREFIX,
}
impl<'a> Iterator for PrefixesIterator<'a> {
type Item = &'a IP_ADAPTER_PREFIX;
#[allow(unsafe_code)]
fn next(&mut self) -> Option<Self::Item> {
if self.next.is_null() {
return None;
};
Some(unsafe {
let result = &*self.next;
self.next = (*self.next).Next;
result
})
}
}
pub struct UnicastAddressesIterator<'a> {
_phantom: std::marker::PhantomData<&'a u8>,
next: *const IP_ADAPTER_UNICAST_ADDRESS,
}
impl<'a> Iterator for UnicastAddressesIterator<'a> {
type Item = &'a IP_ADAPTER_UNICAST_ADDRESS;
#[allow(unsafe_code)]
fn next(&mut self) -> Option<Self::Item> {
if self.next.is_null() {
return None;
};
Some(unsafe {
let result = &*self.next;
self.next = (*self.next).Next;
result
})
}
}

12
veilid-tools/src/tests/native/mod.rs
View File

@@ -3,6 +3,7 @@
mod test_assembly_buffer;
mod test_async_peek_stream;
mod test_network_interfaces;
use super::*;
@@ -13,6 +14,8 @@ use super::*;
pub async fn run_all_tests() {
info!("TEST: exec_test_host_interface");
test_host_interface::test_all().await;
info!("TEST: exec_test_network_interfaces");
test_network_interfaces::test_all().await;
info!("TEST: exec_test_async_peek_stream");
test_async_peek_stream::test_all().await;
info!("TEST: exec_test_async_tag_lock");
@@ -82,6 +85,15 @@ cfg_if! {
});
}
#[test]
#[serial]
fn run_test_network_interfaces() {
setup();
block_on(async {
test_network_interfaces::test_all().await;
});
}
#[test]
#[serial]
fn run_test_async_peek_stream() {

29
veilid-tools/src/tests/native/test_network_interfaces.rs Normal file
View File

@@ -0,0 +1,29 @@
use crate::*;
cfg_if! {
if #[cfg(not(target_arch = "wasm32"))] {
use network_interfaces::NetworkInterfaces;
pub async fn test_network_interfaces() {
info!("testing network interfaces");
let t1 = get_timestamp();
let interfaces = NetworkInterfaces::new();
let count = 100;
for x in 0..count {
info!("loop {}", x);
if let Err(e) = interfaces.refresh().await {
error!("error refreshing interfaces: {}", e);
}
}
let t2 = get_timestamp();
let tdiff = ((t2 - t1) as f64)/1000000.0f64;
info!("running network interface test with {} iterations took {} seconds", count, tdiff);
//info!("interfaces: {:#?}", interfaces)
}
}
}
pub async fn test_all() {
#[cfg(not(target_arch = "wasm32"))]
test_network_interfaces().await;
}