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-rw-r--r--src/sniffing/headers.rs142
1 files changed, 95 insertions, 47 deletions
diff --git a/src/sniffing/headers.rs b/src/sniffing/headers.rs
index 40a311c..1db0da6 100644
--- a/src/sniffing/headers.rs
+++ b/src/sniffing/headers.rs
@@ -1,5 +1,5 @@
-use tun::Error;
use std::fmt;
+use tun::Error;
// Here we will recieve bytes and try to get their destanation & apply Rules for them.
use crate::config::Config;
@@ -8,14 +8,14 @@ use crate::config::Config;
pub enum Protocol {
TCP,
UDP,
- Unsupported(u8)
+ Unsupported(u8),
}
type SourceV4Ip = Ipv4;
type SourceV6Ip = Ipv6;
#[derive(PartialEq, Debug)]
pub enum IpVersion {
V4,
- V6
+ V6,
}
type Ipv4 = [u8; 4];
type Ipv6 = [u16; 8];
@@ -29,7 +29,7 @@ pub enum PacketInfo {
dst_ip: Ipv4,
dst_port: Port,
protocol: Protocol,
- dns: bool
+ dns: bool,
},
// <https://www.geeksforgeeks.org/computer-networks/internet-protocol-version-6-ipv6-header/>
V6 {
@@ -38,21 +38,59 @@ pub enum PacketInfo {
dst_ip: Ipv6,
dst_port: Port,
protocol: Protocol,
- dns: bool
- }
+ dns: bool,
+ },
}
impl fmt::Display for PacketInfo {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
if self.version() == &IpVersion::V4 {
- let src_ip = self.src_ipv4_ip().unwrap();
- let dst_ip = self.dst_ipv4_ip().unwrap();
- write!(f, "{}.{}.{}.{}:{} -> {}.{}.{}.{}:{} {:?} is dns? {:?}", src_ip[0], src_ip[1], src_ip[2], src_ip[3], self.src_port(), dst_ip[0], dst_ip[1], dst_ip[2], dst_ip[3], self.dst_port(), self.protocol(), self.dns())
+ let src_ip = self.src_ipv4_ip().unwrap();
+ let dst_ip = self.dst_ipv4_ip().unwrap();
+ write!(
+ f,
+ "{}.{}.{}.{}:{} -> {}.{}.{}.{}:{} {:?} is dns? {:?}",
+ src_ip[0],
+ src_ip[1],
+ src_ip[2],
+ src_ip[3],
+ self.src_port(),
+ dst_ip[0],
+ dst_ip[1],
+ dst_ip[2],
+ dst_ip[3],
+ self.dst_port(),
+ self.protocol(),
+ self.dns()
+ )
} else {
- let src_ip = self.src_ipv6_ip().unwrap();
- let dst_ip = self.dst_ipv6_ip().unwrap();
+ let src_ip = self.src_ipv6_ip().unwrap();
+ let dst_ip = self.dst_ipv6_ip().unwrap();
// y:y:y:y:y:y:y:y = 8 hexademical; y = segment, pair of 2 u8 big endian
- write!(f, "{:x}:{:x}:{:x}:{:x}:{:x}:{:x}:{:x}:{:x} port:{} -> {:x}:{:x}:{:x}:{:x}:{:x}:{:x}:{:x}:{:x} port:{} {:?} is dns? {:?}", src_ip[0], src_ip[1], src_ip[2], src_ip[3], src_ip[4], src_ip[5], src_ip[6], src_ip[7], self.src_port(), dst_ip[0], dst_ip[1], dst_ip[2], dst_ip[3], dst_ip[4], dst_ip[5], dst_ip[6], dst_ip[7], self.dst_port(), self.protocol(), self.dns())
+ write!(
+ f,
+ "{:x}:{:x}:{:x}:{:x}:{:x}:{:x}:{:x}:{:x} port:{} -> {:x}:{:x}:{:x}:{:x}:{:x}:{:x}:{:x}:{:x} port:{} {:?} is dns? {:?}",
+ src_ip[0],
+ src_ip[1],
+ src_ip[2],
+ src_ip[3],
+ src_ip[4],
+ src_ip[5],
+ src_ip[6],
+ src_ip[7],
+ self.src_port(),
+ dst_ip[0],
+ dst_ip[1],
+ dst_ip[2],
+ dst_ip[3],
+ dst_ip[4],
+ dst_ip[5],
+ dst_ip[6],
+ dst_ip[7],
+ self.dst_port(),
+ self.protocol(),
+ self.dns()
+ )
}
}
}
@@ -60,20 +98,20 @@ impl fmt::Display for PacketInfo {
impl PacketInfo {
pub fn dns(&self) -> &bool {
match self {
- PacketInfo::V4 { dns, ..} => dns,
- PacketInfo::V6 { dns, ..} => dns,
+ PacketInfo::V4 { dns, .. } => dns,
+ PacketInfo::V6 { dns, .. } => dns,
}
}
pub fn src_ipv6_ip(&self) -> Option<&SourceV6Ip> {
match self {
PacketInfo::V6 { src_ip, .. } => Some(src_ip),
- _ => None
+ _ => None,
}
}
pub fn dst_ipv6_ip(&self) -> Option<&SourceV6Ip> {
match self {
PacketInfo::V6 { dst_ip, .. } => Some(dst_ip),
- _ => None
+ _ => None,
}
}
pub fn src_ipv4_ip(&self) -> Option<&SourceV4Ip> {
@@ -85,25 +123,25 @@ impl PacketInfo {
pub fn dst_ipv4_ip(&self) -> Option<&SourceV4Ip> {
match self {
PacketInfo::V4 { dst_ip, .. } => Some(dst_ip),
- _ => None
+ _ => None,
}
}
pub fn src_port(&self) -> &Port {
match self {
PacketInfo::V4 { src_port, .. } => src_port,
- PacketInfo::V6 { src_port, .. } => src_port
+ PacketInfo::V6 { src_port, .. } => src_port,
}
}
pub fn dst_port(&self) -> &Port {
match self {
PacketInfo::V4 { dst_port, .. } => dst_port,
- PacketInfo::V6 { dst_port, .. } => dst_port
+ PacketInfo::V6 { dst_port, .. } => dst_port,
}
}
pub fn version(&self) -> &IpVersion {
match self {
- PacketInfo::V4 { .. }=> &IpVersion::V4,
- PacketInfo::V6 { .. }=> &IpVersion::V6
+ PacketInfo::V4 { .. } => &IpVersion::V4,
+ PacketInfo::V6 { .. } => &IpVersion::V6,
}
}
pub fn protocol(&self) -> &Protocol {
@@ -125,39 +163,51 @@ pub fn sniff_raw_packets(packet: &Packet) -> SniffedPacket {
4 => {
// Internet Header Length (IHL).
let ihl = (packet[0] & 0x0F) as usize * 4;
- let dst_port = Port::from_be_bytes([packet[ihl+2], packet[ihl+3]]);
+ let dst_port = Port::from_be_bytes([packet[ihl + 2], packet[ihl + 3]]);
let dns;
- if dst_port == 53 { dns = true; } else { dns = false; };
- let v4 = PacketInfo::V4{
+ if dst_port == 53 {
+ dns = true;
+ } else {
+ dns = false;
+ };
+ let v4 = PacketInfo::V4 {
src_ip: <Ipv4>::try_from(&packet[12..16])?,
- src_port: Port::from_be_bytes([packet[ihl], packet[ihl+1]]),
+ src_port: Port::from_be_bytes([packet[ihl], packet[ihl + 1]]),
dst_ip: <Ipv4>::try_from(&packet[16..20])?,
dst_port,
protocol: match packet[9] {
6 => Protocol::TCP,
17 => Protocol::UDP,
- p => Protocol::Unsupported(p)
+ p => Protocol::Unsupported(p),
},
- dns
+ dns,
};
- if !matches!(v4.protocol(), Protocol::Unsupported(_)) {
- println!("{v4}");
- } else {
- // TODO: make --debug option which will include this diagnostic, for general use this
+ if !matches!(v4.protocol(), Protocol::Unsupported(_)) {
+ println!("{v4}");
+ } else {
+ // TODO: make --debug option which will include this diagnostic, for general use this
// should be off
- // println!("oppsie unsupported protocol: {:?}", v4.protocol());
+ // println!("oppsie unsupported protocol: {:?}", v4.protocol());
}
Ok(v4)
- },
+ }
6 => {
// y:y:y:y:y:y:y:y hexademical; y = segment, pair of 2 u8 in big endian
- let src_ip = std::array::from_fn(|i| u16::from_be_bytes([packet[8 + i*2], packet[8 + i*2 + 1]]));
- let dst_ip = std::array::from_fn(|i| u16::from_be_bytes([packet[24 + i*2], packet[24 + i*2 + 1]]));
+ let src_ip = std::array::from_fn(|i| {
+ u16::from_be_bytes([packet[8 + i * 2], packet[8 + i * 2 + 1]])
+ });
+ let dst_ip = std::array::from_fn(|i| {
+ u16::from_be_bytes([packet[24 + i * 2], packet[24 + i * 2 + 1]])
+ });
let dst_port = Port::from_be_bytes([packet[42], packet[43]]);
let dns;
- if dst_port == 53 { dns = true; } else { dns = false; };
- let v6 = PacketInfo::V6{
+ if dst_port == 53 {
+ dns = true;
+ } else {
+ dns = false;
+ };
+ let v6 = PacketInfo::V6 {
src_ip,
src_port: Port::from_be_bytes([packet[40], packet[41]]),
dst_ip,
@@ -165,22 +215,20 @@ pub fn sniff_raw_packets(packet: &Packet) -> SniffedPacket {
protocol: match packet[6] {
6 => Protocol::TCP,
17 => Protocol::UDP,
- p => Protocol::Unsupported(p)
+ p => Protocol::Unsupported(p),
},
- dns
+ dns,
};
- if !matches!(v6.protocol(), Protocol::Unsupported(_)) {
- println!("{v6}");
- } else {
- // TODO: make --debug option which will include this diagnostic, for general use this
+ if !matches!(v6.protocol(), Protocol::Unsupported(_)) {
+ println!("{v6}");
+ } else {
+ // TODO: make --debug option which will include this diagnostic, for general use this
// should be off
- // println!("oppsie unsupported protocol: {:?}", v6.protocol());
+ // println!("oppsie unsupported protocol: {:?}", v6.protocol());
}
Ok(v6)
- },
- ver => {
- Err(format!("unsuppiorted ver: {ver}").into())
}
+ ver => Err(format!("unsuppiorted ver: {ver}").into()),
}
}
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