shellrow
3 years ago
parent
b3172f19e1
commit
7ad6493c88
@ -0,0 +1,24 @@ |
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use std::net::UdpSocket; |
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use super::Gateway; |
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|
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fn send_udp_packet() -> Result<(), String> { |
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let buf = [0u8; 0]; |
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let socket = match UdpSocket::bind("0.0.0.0:0") { |
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Ok(s) => s, |
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Err(e) => return Err(format!("Failed to create UDP socket {}", e)), |
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}; |
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let dst: &str = "1.1.1.1:80"; |
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match socket.set_ttl(1) { |
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Ok(_) => (), |
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Err(e) => return Err(format!("Failed to set TTL {}", e)), |
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} |
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match socket.send_to(&buf, dst) { |
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Ok(_) => (), |
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Err(e) => return Err(format!("Failed to send data {}", e)), |
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} |
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Ok(()) |
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} |
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|
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pub fn get_default_gateway(interface_name: String) -> Result<Gateway, String> { |
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Err(String::new()) |
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} |
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@ -0,0 +1,67 @@ |
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use std::net::UdpSocket; |
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use std::time::{Duration, Instant}; |
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use crate::socket; |
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use super::Gateway; |
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|
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const TIMEOUT: u64 = 3000; |
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|
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fn send_udp_packet() -> Result<(), String> { |
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let buf = [0u8; 0]; |
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let socket = match UdpSocket::bind("0.0.0.0:0") { |
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Ok(s) => s, |
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Err(e) => return Err(format!("Failed to create UDP socket {}", e)), |
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}; |
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let dst: &str = "1.1.1.1:80"; |
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match socket.set_ttl(1) { |
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Ok(_) => (), |
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Err(e) => return Err(format!("Failed to set TTL {}", e)), |
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} |
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match socket.send_to(&buf, dst) { |
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Ok(_) => (), |
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Err(e) => return Err(format!("Failed to send data {}", e)), |
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} |
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Ok(()) |
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} |
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|
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pub fn get_default_gateway(interface_name: String) -> Result<Gateway, String> { |
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let timeout = Duration::from_millis(TIMEOUT); |
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let start_time = Instant::now(); |
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let config = socket::Config { |
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write_buffer_size: 4096, |
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read_buffer_size: 4096, |
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read_timeout: None, |
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write_timeout: None, |
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channel_type: socket::ChannelType::Layer2, |
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bpf_fd_attempts: 1000, |
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promiscuous: false, |
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}; |
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let (mut _tx, mut rx) = match socket::channel(interface_name, config) { |
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Ok(socket::Channel::Ethernet(tx, rx)) => (tx, rx), |
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Err(e) => panic!("Failed to create channel {}", e), |
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}; |
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match send_udp_packet() { |
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Ok(_) => (), |
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Err(e) => return Err(format!("Failed to send UDP packet {}", e)), |
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} |
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loop { |
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match rx.next() { |
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Ok(frame) => { |
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match socket::packet::parse_frame(frame){ |
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Ok(gateway) => { |
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return Ok(gateway); |
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}, |
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Err(_) => {}, |
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} |
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}, |
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Err(_) => {} |
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} |
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if Instant::now().duration_since(start_time) > timeout { |
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return Err(String::from("Recieve timeout")); |
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}else{ |
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match send_udp_packet() { |
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Ok(_) => (), |
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Err(e) => return Err(format!("Failed to send UDP packet {}", e)), |
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} |
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} |
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} |
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} |
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@ -0,0 +1,18 @@ |
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use std::net::{IpAddr, UdpSocket}; |
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|
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pub fn get_local_ipaddr() -> Option<IpAddr> { |
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let socket = match UdpSocket::bind("0.0.0.0:0") { |
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Ok(s) => s, |
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Err(_) => return None, |
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}; |
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|
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match socket.connect("1.1.1.1:80") { |
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Ok(()) => (), |
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Err(_) => return None, |
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}; |
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|
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match socket.local_addr() { |
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Ok(addr) => return Some(addr.ip()), |
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Err(_) => return None, |
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}; |
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} |
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@ -0,0 +1,215 @@ |
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use windows::Win32::Foundation::{ERROR_BUFFER_OVERFLOW, NO_ERROR}; |
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use windows::Win32::NetworkManagement::IpHelper::{GetAdaptersInfo, IP_ADAPTER_INFO, IP_ADDR_STRING, SendARP}; |
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use std::convert::TryInto; |
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use std::mem; |
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use std::net::{IpAddr, Ipv4Addr, Ipv6Addr}; |
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use std::ffi::CStr; |
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use core::ffi::c_void; |
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use crate::interface::{Interface, MacAddr}; |
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use crate::gateway::Gateway; |
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const EXCEPTION_INTERFACE_INDEX: u32 = 0; |
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const EXCEPTION_INTERFACE_COMBOINDEX: u32 = 4928; |
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|
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// Convert C string to Rust string without trailing null bytes
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fn bytes_to_string(bytes: &[u8]) -> String { |
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let result: String = match CStr::from_bytes_with_nul(bytes) { |
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Ok(cstr) => { |
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match cstr.to_str() { |
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Ok(rstr) => rstr.to_string(), |
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Err(_) => cstr.to_string_lossy().replace("\u{0}", "").to_string(), |
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}
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}, |
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Err(_) => { |
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String::from_utf8_lossy(bytes).replace("\u{0}", "").to_string() |
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} |
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}; |
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result |
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} |
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|
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#[cfg(target_endian = "little")] |
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fn htonl(val : u32) -> u32 { |
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let o3 = (val >> 24) as u8; |
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let o2 = (val >> 16) as u8; |
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let o1 = (val >> 8) as u8; |
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let o0 = val as u8; |
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(o0 as u32) << 24 | (o1 as u32) << 16 | (o2 as u32) << 8 | (o3 as u32) |
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} |
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|
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#[cfg(target_endian = "big")] |
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fn htonl(val : u32) -> u32 { |
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val |
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} |
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fn get_mac_through_arp(src_ip: Ipv4Addr, dst_ip: Ipv4Addr) -> MacAddr { |
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let src_ip_int: u32 = htonl(u32::from(src_ip)); |
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let dst_ip_int: u32 = htonl(u32::from(dst_ip)); |
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let mut out_buf_len : u32 = 6; |
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let mut target_mac_addr: [u8; 6] = [0; 6]; |
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let res = unsafe { SendARP(dst_ip_int, src_ip_int, target_mac_addr.as_mut_ptr() as *mut c_void, &mut out_buf_len) }; |
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if res == NO_ERROR { |
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MacAddr::new(target_mac_addr) |
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}else{ |
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MacAddr::zero() |
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} |
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} |
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|
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// Get network interfaces using the IP Helper API
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// TODO: Make more rusty ...
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// Reference: https://docs.microsoft.com/en-us/windows/win32/api/iphlpapi/nf-iphlpapi-getadaptersinfo
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pub fn interfaces() -> Vec<Interface> { |
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let mut interfaces: Vec<Interface> = vec![]; |
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let mut out_buf_len : u32 = mem::size_of::<IP_ADAPTER_INFO>().try_into().unwrap(); |
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let mut raw_adaptor_mem: Vec<u8> = Vec::with_capacity(out_buf_len as usize); |
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let mut p_adaptor: *mut IP_ADAPTER_INFO; |
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let mut res = unsafe { GetAdaptersInfo(raw_adaptor_mem.as_mut_ptr() as *mut IP_ADAPTER_INFO, &mut out_buf_len ) }; |
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// Make an initial call to GetAdaptersInfo to get the necessary size into the out_buf_len variable
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if res == ERROR_BUFFER_OVERFLOW { |
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raw_adaptor_mem = Vec::with_capacity(out_buf_len as usize); |
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unsafe { |
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res = GetAdaptersInfo(raw_adaptor_mem.as_mut_ptr() as *mut IP_ADAPTER_INFO, &mut out_buf_len); |
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} |
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} |
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if res != NO_ERROR { |
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return interfaces; |
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} |
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//Enumerate all adapters
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p_adaptor = unsafe { mem::transmute(&raw_adaptor_mem) }; |
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while p_adaptor as u64 != 0 { |
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let adapter: IP_ADAPTER_INFO = unsafe { *p_adaptor }; |
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if adapter.Index == EXCEPTION_INTERFACE_INDEX || adapter.ComboIndex == EXCEPTION_INTERFACE_COMBOINDEX{ |
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unsafe { p_adaptor = (*p_adaptor).Next; } |
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continue; |
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} |
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let adapter_name: String = bytes_to_string(&adapter.AdapterName); |
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let adapter_desc: String = bytes_to_string(&adapter.Description); |
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let mac_addr:[u8; 6] = adapter.Address[..6].try_into().unwrap_or([0, 0, 0, 0, 0, 0]); |
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//Enumerate all IPs
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let mut ipv4_vec: Vec<Ipv4Addr> = vec![]; |
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let mut ipv6_vec: Vec<Ipv6Addr> = vec![]; |
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let mut p_ip_addr: *mut IP_ADDR_STRING; |
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p_ip_addr = unsafe { mem::transmute(&(*p_adaptor).IpAddressList) }; |
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while p_ip_addr as u64 != 0 { |
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let ip_addr_string: IP_ADDR_STRING = unsafe{ *p_ip_addr }; |
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let ip_addr: String = bytes_to_string(&ip_addr_string.IpAddress.String); |
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match ip_addr.parse::<IpAddr>() { |
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Ok(ip_addr) => { |
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match ip_addr { |
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IpAddr::V4(ipv4_addr) => { |
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ipv4_vec.push(ipv4_addr); |
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}, |
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IpAddr::V6(ipv6_addr) => { |
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ipv6_vec.push(ipv6_addr); |
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} |
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} |
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}, |
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Err(_) => {}, |
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} |
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unsafe { p_ip_addr = (*p_ip_addr).Next; } |
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} |
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//Enumerate all gateways
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let mut gateway_ips: Vec<IpAddr> = vec![]; |
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let mut p_gateway_addr: *mut IP_ADDR_STRING; |
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p_gateway_addr = unsafe { mem::transmute(&(*p_adaptor).GatewayList) }; |
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while p_gateway_addr as u64 != 0 { |
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let gateway_addr_string: IP_ADDR_STRING = unsafe { *p_gateway_addr }; |
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let gateway_addr: String = bytes_to_string(&gateway_addr_string.IpAddress.String); |
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match gateway_addr.parse::<IpAddr>() { |
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Ok(ip_addr) => { |
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gateway_ips.push(ip_addr); |
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}, |
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Err(_) => {}, |
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} |
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unsafe { p_gateway_addr = (*p_gateway_addr).Next; } |
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} |
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let default_gateway: Option<Gateway> = match gateway_ips.get(0) { |
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Some(gateway_ip) => { |
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let gateway_ip: IpAddr = *gateway_ip; |
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let default_gateway: Option<Gateway> = if gateway_ip != IpAddr::V4(Ipv4Addr::UNSPECIFIED) { |
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match gateway_ip { |
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IpAddr::V4(dst_ip) => { |
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if let Some(src_ip) = ipv4_vec.get(0) { |
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let mac_addr = get_mac_through_arp(*src_ip, dst_ip); |
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let gateway = Gateway { |
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mac_addr: mac_addr, |
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ip_addr: IpAddr::V4(dst_ip), |
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}; |
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Some(gateway) |
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}else{ |
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None |
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} |
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}, |
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IpAddr::V6(_dst_ip) => { |
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None |
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}, |
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} |
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}else{ |
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None |
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}; |
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default_gateway |
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}, |
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None => None, |
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}; |
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let interface: Interface = Interface{ |
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index: adapter.Index, |
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name: adapter_name, |
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description: Some(adapter_desc), |
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mac_addr: Some(MacAddr::new(mac_addr)), |
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ipv4: ipv4_vec, |
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ipv6: ipv6_vec, |
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gateway: default_gateway, |
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}; |
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interfaces.push(interface); |
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unsafe { p_adaptor = (*p_adaptor).Next; } |
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} |
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return interfaces; |
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} |
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// Get default Interface index
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pub fn default_interface_index() -> Option<u32> { |
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let local_ip: IpAddr = match super::get_local_ipaddr(){ |
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Some(local_ip) => local_ip, |
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None => return None, |
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}; |
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let interfaces = interfaces(); |
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for iface in interfaces { |
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match local_ip { |
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IpAddr::V4(local_ipv4) => { |
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if iface.ipv4.contains(&local_ipv4) { |
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return Some(iface.index); |
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} |
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}, |
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IpAddr::V6(local_ipv6) => { |
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if iface.ipv6.contains(&local_ipv6) { |
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return Some(iface.index); |
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} |
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}, |
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} |
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} |
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None |
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} |
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|
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// Get default Interface name
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pub fn default_interface_name() -> Option<String> { |
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let local_ip: IpAddr = match super::get_local_ipaddr(){ |
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Some(local_ip) => local_ip, |
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None => return None, |
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}; |
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let interfaces = interfaces(); |
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for iface in interfaces { |
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match local_ip { |
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IpAddr::V4(local_ipv4) => { |
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if iface.ipv4.contains(&local_ipv4) { |
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return Some(iface.name); |
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} |
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}, |
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IpAddr::V6(local_ipv6) => { |
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if iface.ipv6.contains(&local_ipv6) { |
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return Some(iface.name); |
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} |
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}, |
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} |
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} |
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None |
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} |
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