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[Windows] Change logic of interfaces() function

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- Add friendly_name field to Interface struct
- Change iphlpapi function from GetAdaptersInfo to GetAdaptersAddresses
- Windows IPv6 support
main
shellrow 2 years ago
parent 3edf665117
commit f7c77b8116
5 changed files with 146 additions and 148 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 7
      Cargo.toml
  2. 1
      examples/default_interface.rs
  3. 1
      examples/list_interfaces.rs
  4. 4
      src/interface/mod.rs
  5. 223
      src/interface/windows.rs

7
Cargo.toml
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@ -10,12 +10,15 @@ keywords = ["network"]
categories = ["network-programming"]
license = "MIT"
[target.'cfg(not(windows))'.dependencies]
[dependencies]
libc = "0.2"
[target.'cfg(windows)'.dependencies]
memalloc = "0.1.0"
[target.'cfg(windows)'.dependencies.windows]
version = "0.29.0"
features = ["Win32_Foundation","Win32_NetworkManagement_IpHelper"]
features = ["Win32_Foundation","Win32_NetworkManagement_IpHelper", "Win32_Networking_WinSock"]
[target.'cfg(any(target_os = "macos", target_os = "ios"))'.dependencies]
system-configuration = "0.5.0"

1
examples/default_interface.rs
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@ -6,6 +6,7 @@ fn main(){
println!("Default Interface");
println!("\tIndex: {}", default_interface.index);
println!("\tName: {}", default_interface.name);
println!("\tFriendlyName: {:?}", default_interface.friendly_name);
println!("\tDescription: {:?}", default_interface.description);
println!("\tType: {}", default_interface.if_type.name());
if let Some(mac_addr) = default_interface.mac_addr {

1
examples/list_interfaces.rs
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@ -6,6 +6,7 @@ fn main(){
println!("Interface");
println!("\tIndex: {}", interface.index);
println!("\tName: {}", interface.name);
println!("\tFriendlyName: {:?}", interface.friendly_name);
println!("\tDescription: {:?}", interface.description);
println!("\tType: {}", interface.if_type.name());
if let Some(mac_addr) = interface.mac_addr {

4
src/interface/mod.rs
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@ -75,9 +75,9 @@ pub struct Interface {
pub index: u32,
/// Name of network interface
pub name: String,
/// Friendly Name of network interface
pub friendly_name : Option<String>,
/// Description of the network interface
///
/// On Windows, this field is the adapter name
pub description: Option<String>,
/// Interface Type
pub if_type: InterfaceType,

223
src/interface/windows.rs
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@ -1,32 +1,17 @@
use windows::Win32::Foundation::{ERROR_BUFFER_OVERFLOW, NO_ERROR};
use windows::Win32::NetworkManagement::IpHelper::{GetAdaptersInfo, IP_ADAPTER_INFO, IP_ADDR_STRING, SendARP};
use windows::Win32::Networking::WinSock::{SOCKADDR_IN, SOCKADDR_IN6};
use windows::Win32::NetworkManagement::IpHelper::{GetAdaptersAddresses, AF_UNSPEC, AF_INET, AF_INET6, GAA_FLAG_INCLUDE_GATEWAYS, IP_ADAPTER_ADDRESSES_LH, SendARP};
use std::convert::TryInto;
use std::mem;
use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
use std::ffi::CStr;
use std::convert::TryFrom;
use core::ffi::c_void;
use libc::{c_char, strlen, wchar_t, wcslen};
use memalloc::{allocate, deallocate};
use crate::ip::{Ipv4Net, Ipv6Net};
use crate::interface::{Interface, MacAddr,InterfaceType};
use crate::gateway::Gateway;
// Convert C string to Rust string without trailing null bytes
fn bytes_to_string(bytes: &[u8]) -> String {
let result: String = match CStr::from_bytes_with_nul(bytes) {
Ok(cstr) => {
match cstr.to_str() {
Ok(rstr) => rstr.to_string(),
Err(_) => cstr.to_string_lossy().replace("\u{0}", "").to_string(),
}
},
Err(_) => {
String::from_utf8_lossy(bytes).replace("\u{0}", "").to_string()
}
};
result
}
#[cfg(target_endian = "little")]
fn htonl(val : u32) -> u32 {
let o3 = (val >> 24) as u8;
@ -55,138 +40,146 @@ fn get_mac_through_arp(src_ip: Ipv4Addr, dst_ip: Ipv4Addr) -> MacAddr {
}
// Get network interfaces using the IP Helper API
// TODO: Make more rusty ...
// Reference: https://docs.microsoft.com/en-us/windows/win32/api/iphlpapi/nf-iphlpapi-getadaptersinfo
// Reference: https://docs.microsoft.com/en-us/windows/win32/api/iphlpapi/nf-iphlpapi-getadaptersaddresses
pub fn interfaces() -> Vec<Interface> {
let mut interfaces: Vec<Interface> = vec![];
let mut out_buf_len : u32 = mem::size_of::<IP_ADAPTER_INFO>().try_into().unwrap();
let mut raw_adaptor_mem: Vec<u8> = Vec::with_capacity(out_buf_len as usize);
let mut p_adaptor: *mut IP_ADAPTER_INFO;
let mut res = unsafe { GetAdaptersInfo(raw_adaptor_mem.as_mut_ptr() as *mut IP_ADAPTER_INFO, &mut out_buf_len ) };
// Make an initial call to GetAdaptersInfo to get the necessary size into the out_buf_len variable
if res == ERROR_BUFFER_OVERFLOW {
raw_adaptor_mem = Vec::with_capacity(out_buf_len as usize);
unsafe {
res = GetAdaptersInfo(raw_adaptor_mem.as_mut_ptr() as *mut IP_ADAPTER_INFO, &mut out_buf_len);
}
}
if res != NO_ERROR {
return interfaces;
}
let mut dwsize: u32 = 2000;
let mut mem = unsafe { allocate(dwsize as usize) } as *mut IP_ADAPTER_ADDRESSES_LH;
let mut retries = 3;
let mut ret_val;
let family: u32 = AF_UNSPEC;
let flags: u32 = GAA_FLAG_INCLUDE_GATEWAYS;
loop {
let old_size = dwsize as usize;
ret_val = unsafe { GetAdaptersAddresses(family, flags, std::ptr::null_mut::<std::ffi::c_void>(), mem, &mut dwsize) };
if ret_val != ERROR_BUFFER_OVERFLOW || retries <= 0 {
break;
}
unsafe { deallocate(mem as *mut u8, old_size as usize) };
mem = unsafe { allocate(dwsize as usize) as *mut IP_ADAPTER_ADDRESSES_LH };
retries -= 1;
}
if ret_val == NO_ERROR {
// Enumerate all adapters
p_adaptor = unsafe { mem::transmute(&raw_adaptor_mem) };
while p_adaptor as u64 != 0 {
let adapter: IP_ADAPTER_INFO = unsafe { *p_adaptor };
match InterfaceType::try_from(adapter.Type) {
let mut cur = mem;
while !cur.is_null() {
let if_type: u32 = unsafe{ (*cur).IfType };
match InterfaceType::try_from(if_type) {
Ok(_) => {},
Err(_) => {
unsafe { p_adaptor = (*p_adaptor).Next; }
cur = unsafe { (*cur).Next };
continue;
},
}
let adapter_name: String = bytes_to_string(&adapter.AdapterName);
let adapter_desc: String = bytes_to_string(&adapter.Description);
let mac_addr:[u8; 6] = adapter.Address[..6].try_into().unwrap_or([0, 0, 0, 0, 0, 0]);
//Enumerate all IPs
// Index
let anon1 = unsafe { (*cur).Anonymous1 };
let anon = unsafe { anon1.Anonymous};
let index = anon.IfIndex;
// Flags
let anon2 = unsafe { (*cur).Anonymous2 };
let flags = unsafe { anon2.Flags };
// Name
let p_aname = unsafe { (*cur).AdapterName.0 };
let aname_len = unsafe { strlen(p_aname as *const c_char) };
let aname_slice = unsafe { std::slice::from_raw_parts(p_aname, aname_len) };
let adapter_name = String::from_utf8(aname_slice.to_vec()).unwrap();
// Friendly Name
let p_fname = unsafe { (*cur).FriendlyName.0 };
let fname_len = unsafe { wcslen(p_fname as *const wchar_t) };
let fname_slice = unsafe { std::slice::from_raw_parts(p_fname, fname_len) };
let friendly_name = String::from_utf16(fname_slice).unwrap();
// Description
let p_desc = unsafe { (*cur).Description.0};
let desc_len = unsafe { wcslen(p_desc as *const wchar_t) };
let aname_slice = unsafe { std::slice::from_raw_parts(p_desc, desc_len) };
let description = String::from_utf16(aname_slice).unwrap();
// MAC address
let mac_addr_arr: [u8; 6] = unsafe { (*cur).PhysicalAddress }[..6].try_into().unwrap_or([0, 0, 0, 0, 0, 0]);
let mac_addr: MacAddr = MacAddr::new(mac_addr_arr);
let mut ipv4_vec: Vec<Ipv4Net> = vec![];
let mut ipv6_vec: Vec<Ipv6Net> = vec![];
let mut p_ip_addr: *mut IP_ADDR_STRING;
p_ip_addr = unsafe { mem::transmute(&(*p_adaptor).IpAddressList) };
while p_ip_addr as u64 != 0 {
let ip_addr_string: IP_ADDR_STRING = unsafe{ *p_ip_addr };
let ip_addr: String = bytes_to_string(&ip_addr_string.IpAddress.String);
let netmask: String = bytes_to_string(&ip_addr_string.IpMask.String);
match ip_addr.parse::<IpAddr>() {
Ok(ip_addr) => {
match ip_addr {
IpAddr::V4(ipv4_addr) => {
let netmask: Ipv4Addr = match netmask.parse::<IpAddr>() {
Ok(netmask) => {
match netmask {
IpAddr::V4(netmask) => netmask,
IpAddr::V6(_) => Ipv4Addr::UNSPECIFIED,
}
},
Err(_) => Ipv4Addr::UNSPECIFIED,
// Enumerate all IPs
let mut cur_a = unsafe { (*cur).FirstUnicastAddress };
while !cur_a.is_null() {
let addr = unsafe { (*cur_a).Address };
let prefix_len = unsafe{ (*cur_a).OnLinkPrefixLength };
let sockaddr = unsafe { *addr.lpSockaddr };
if sockaddr.sa_family == AF_INET as u16 {
let sockaddr: *mut SOCKADDR_IN = addr.lpSockaddr as *mut SOCKADDR_IN;
let a = unsafe { (*sockaddr).sin_addr.S_un.S_addr };
let ipv4 = if cfg!(target_endian = "little") {
Ipv4Addr::from(a.swap_bytes())
} else {
Ipv4Addr::from(a)
};
let ipv4_net: Ipv4Net = Ipv4Net::new_with_netmask(ipv4_addr, netmask);
let ipv4_net: Ipv4Net = Ipv4Net::new(ipv4, prefix_len);
ipv4_vec.push(ipv4_net);
},
IpAddr::V6(ipv6_addr) => {
let netmask: Ipv6Addr = match netmask.parse::<IpAddr>() {
Ok(netmask) => {
match netmask {
IpAddr::V4(_) => Ipv6Addr::UNSPECIFIED,
IpAddr::V6(netmask) => netmask,
}
},
Err(_) => Ipv6Addr::UNSPECIFIED,
};
let ipv6_net: Ipv6Net = Ipv6Net::new_with_netmask(ipv6_addr, netmask);
} else if sockaddr.sa_family == AF_INET6 as u16 {
let sockaddr: *mut SOCKADDR_IN6 = addr.lpSockaddr as *mut SOCKADDR_IN6;
let a = unsafe { (*sockaddr).sin6_addr.u.Byte };
let ipv6 = Ipv6Addr::from(a);
let ipv6_net: Ipv6Net = Ipv6Net::new(ipv6, prefix_len);
ipv6_vec.push(ipv6_net);
}
cur_a = unsafe { (*cur_a).Next };
}
// Gateway
// TODO: IPv6 support
let mut gateway_ips: Vec<Ipv4Addr> = vec![];
let mut cur_g = unsafe { (*cur).FirstGatewayAddress };
while !cur_g.is_null() {
let addr = unsafe { (*cur_g).Address };
let sockaddr = unsafe { *addr.lpSockaddr };
if sockaddr.sa_family == AF_INET as u16 {
let sockaddr: *mut SOCKADDR_IN = addr.lpSockaddr as *mut SOCKADDR_IN;
let a = unsafe { (*sockaddr).sin_addr.S_un.S_addr };
let ipv4 = if cfg!(target_endian = "little") {
Ipv4Addr::from(a.swap_bytes())
} else {
Ipv4Addr::from(a)
};
gateway_ips.push(ipv4);
}
},
Err(_) => {},
}
unsafe { p_ip_addr = (*p_ip_addr).Next; }
}
//Enumerate all gateways
let mut gateway_ips: Vec<IpAddr> = vec![];
let mut p_gateway_addr: *mut IP_ADDR_STRING;
p_gateway_addr = unsafe { mem::transmute(&(*p_adaptor).GatewayList) };
while p_gateway_addr as u64 != 0 {
let gateway_addr_string: IP_ADDR_STRING = unsafe { *p_gateway_addr };
let gateway_addr: String = bytes_to_string(&gateway_addr_string.IpAddress.String);
match gateway_addr.parse::<IpAddr>() {
Ok(ip_addr) => {
gateway_ips.push(ip_addr);
},
Err(_) => {},
}
unsafe { p_gateway_addr = (*p_gateway_addr).Next; }
cur_g = unsafe { (*cur_g).Next };
}
let default_gateway: Option<Gateway> = match gateway_ips.get(0) {
Some(gateway_ip) => {
let gateway_ip: IpAddr = *gateway_ip;
let default_gateway: Option<Gateway> = if gateway_ip != IpAddr::V4(Ipv4Addr::UNSPECIFIED) {
match gateway_ip {
IpAddr::V4(dst_ip) => {
if let Some(ip_net) = ipv4_vec.get(0) {
let mac_addr = get_mac_through_arp(ip_net.addr, dst_ip);
let mac_addr = get_mac_through_arp(ip_net.addr, *gateway_ip);
let gateway = Gateway {
mac_addr: mac_addr,
ip_addr: IpAddr::V4(dst_ip),
ip_addr: IpAddr::V4(*gateway_ip),
};
Some(gateway)
}else{
None
}
},
IpAddr::V6(_dst_ip) => {
None
},
}
}else{
None
};
default_gateway
},
None => None,
};
let interface: Interface = Interface{
index: adapter.Index,
index: index,
name: adapter_name,
description: Some(adapter_desc),
if_type: InterfaceType::try_from(adapter.Type).unwrap_or(InterfaceType::Unknown),
mac_addr: Some(MacAddr::new(mac_addr)),
friendly_name: Some(friendly_name),
description: Some(description),
if_type: InterfaceType::try_from(if_type).unwrap_or(InterfaceType::Unknown),
mac_addr: Some(mac_addr),
ipv4: ipv4_vec,
ipv6: ipv6_vec,
flags: adapter.Type,
flags: flags,
gateway: default_gateway,
};
interfaces.push(interface);
unsafe { p_adaptor = (*p_adaptor).Next; }
cur = unsafe { (*cur).Next };
}
} else {
unsafe {
deallocate(mem as *mut u8, dwsize as usize);
}
}
unsafe {
deallocate(mem as *mut u8, dwsize as usize);
}
return interfaces;
}

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