impl: started writting FakeDNS server (or 'dns hijack')

src/sniffing/types.rs

@@ -0,0 +1,42 @@
+#[derive(Debug, PartialEq)]
+pub enum PacketInfo {
+    // <https://www.geeksforgeeks.org/computer-networks/what-is-ipv4/>
+    V4 {
+        src_ip: Ipv4,
+        src_port: Port,
+        dst_ip: Ipv4,
+        dst_port: Port,
+        protocol: Protocol,
+        dns: bool,
+    },
+    // <https://www.geeksforgeeks.org/computer-networks/internet-protocol-version-6-ipv6-header/>
+    V6 {
+        src_ip: Ipv6,
+        src_port: Port,
+        dst_ip: Ipv6,
+        dst_port: Port,
+        protocol: Protocol,
+        dns: bool,
+    },
+}
+
+#[derive(Debug, PartialEq)]
+pub enum Protocol {
+    TCP,
+    UDP,
+    Unsupported(u8),
+}
+pub type SourceV4Ip = Ipv4;
+pub type SourceV6Ip = Ipv6;
+#[derive(PartialEq, Debug)]
+pub enum IpVersion {
+    V4,
+    V6,
+}
+pub type Ipv4 = [u8; 4];
+pub type Ipv6 = [u16; 8];
+pub type Port = u16;
+
+pub type GenericError = Box<dyn std::error::Error + Send + Sync + 'static>;
+pub type SniffedPacket = Result<PacketInfo, Box<dyn std::error::Error + Send + Sync + 'static>>;
+pub type Packet = [u8];