feat: add ip address port

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "rust_util"
-version = "0.6.5"
+version = "0.6.7"
 authors = ["Hatter Jiang <jht5945@gmail.com>"]
 edition = "2018"
 description = "Hatter's Rust Util"

src/util_net.rs

@@ -1,6 +1,39 @@
+use std::fmt::{ Display, Formatter };
+use std::result::Result;
 use std::net::SocketAddr;
 use crate::XResult;
 
+const DEFAULT_LISTEN_ADDR: [u8; 4] = [127, 0, 0, 1];
+
+#[derive(Debug, Clone)]
+pub enum IpAddress {
+    Ipv4([u8; 4]),
+}
+
+impl IpAddress {
+    pub fn parse_ipv4(addr: &str) -> Option<Self> {
+        parse_ipv4_addr(addr).map(|parts| IpAddress::Ipv4(parts))
+    }
+
+    pub fn to_address(&self) -> String {
+        match self {
+            IpAddress::Ipv4(ipv4) => ipv4.iter().map(|p| p.to_string()).collect::<Vec<_>>().join("."),
+        }
+    }
+
+    pub fn is_matches(&self, socket_addr: &SocketAddr) -> bool {
+        match self {
+            IpAddress::Ipv4(self_ipv4_octets) => IpAddressMask::Ipv4(self_ipv4_octets.clone(), 32).is_matches(socket_addr),
+        }
+    }
+}
+
+impl Display for IpAddress {
+    fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), std::fmt::Error> {
+        write!(f, "{}", self.to_address())
+    }
+}
+
 #[derive(Debug, Clone)]
 pub enum IpAddressMask {
     Ipv4([u8; 4], u8),
@@ -20,21 +53,7 @@ impl IpAddressMask {
         } else {
             return None;
         };
-        let addr_parts = addr_ip.split('.').collect::<Vec<_>>();
-        if addr_parts.len() != 4 {
-            return None;
-        }
-        let parsed_addr = || -> XResult<[u8; 4]> {
-            Ok([addr_parts[0].parse::<u8>()?,
-                addr_parts[1].parse::<u8>()?,
-                addr_parts[2].parse::<u8>()?,
-                addr_parts[3].parse::<u8>()?
-            ])
-        };
-        match parsed_addr() {
-            Ok(parts) => Some(IpAddressMask::Ipv4(parts, mask)),
-            Err(_) => None,
-        }
+        parse_ipv4_addr(addr_ip).map(|parts| IpAddressMask::Ipv4(parts, mask))
     }
 
     pub fn to_address(&self) -> String {
@@ -63,6 +82,66 @@ impl IpAddressMask {
     }
 }
 
+impl Display for IpAddressMask {
+    fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), std::fmt::Error> {
+        write!(f, "{}", self.to_address())
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct IpAddressAndPort {
+    pub ip: IpAddress,
+    pub port: u16,
+}
+
+impl IpAddressAndPort {
+    pub fn parse(ip_address_and_port: &str) -> Option<Self> {
+        if let Some((ipv4, port)) = parse_ip_and_port(ip_address_and_port) {
+            return Some(IpAddressAndPort {
+                ip: IpAddress::Ipv4(ipv4),
+                port,
+            });
+        }
+        None
+    }
+
+    pub fn to_address(&self) -> String {
+        format!("{}:{}", self.ip, self.port)
+    }
+
+    pub fn to_ipv4_and_port(&self) -> ([u8; 4], u16) {
+        match self.ip {
+            IpAddress::Ipv4(ipv4) => (ipv4, self.port),
+        }
+    }
+}
+
+impl Display for IpAddressAndPort {
+    fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), std::fmt::Error> {
+        write!(f, "{}:{}", self.ip, self.port)
+    }
+}
+
+// :8080 -> 127.0.0.1:8080
+fn parse_ip_and_port(listen: &str) -> Option<([u8; 4], u16)> {
+    let listen_addr = match listen.split(':').next() {
+        None => DEFAULT_LISTEN_ADDR,
+        Some(addr) if addr.is_empty() => DEFAULT_LISTEN_ADDR,
+        Some(addr) => match parse_ipv4_addr(addr) {
+            Some(parsed_ip_address) => parsed_ip_address, None => return None,
+        },
+    };
+
+    let listen_port = match listen.split(':').nth(1) {
+        None => return None,
+        Some(port) => match port.parse::<u16>() {
+            Ok(port) => port, Err(_) => return None,
+        },
+    };
+
+    Some((listen_addr, listen_port))
+}
+
 fn ipv4_mask(mask: u8) -> u32 {
     let mut r = 0_u32;
     for _ in 0..mask {
@@ -79,9 +158,23 @@ fn ipv4_to_u32(ipv4: &[u8; 4]) -> u32 {
     ((ipv4[0] as u32) << (8 * 3)) + ((ipv4[1] as u32) << (8 * 2)) + ((ipv4[2] as u32) << 8) + (ipv4[3] as u32)
 }
 
+fn parse_ipv4_addr(addr: &str) -> Option<[u8; 4]>  {
+    let addr_parts = addr.split('.').collect::<Vec<_>>();
+    if addr_parts.len() != 4 {
+        return None;
+    }
+    let parsed_addr = || -> XResult<[u8; 4]> {
+        Ok([addr_parts[0].parse::<u8>()?,
+            addr_parts[1].parse::<u8>()?,
+            addr_parts[2].parse::<u8>()?,
+            addr_parts[3].parse::<u8>()?
+        ])
+    };
+    parsed_addr().ok()
+}
 
 #[test]
-fn test_is_matches() {
+fn test_ip_address_is_matches() {
     let addr = SocketAddr::new(std::net::IpAddr::V4(std::net::Ipv4Addr::new(127, 0, 0, 1)), 123);
     let addr2 = SocketAddr::new(std::net::IpAddr::V4(std::net::Ipv4Addr::new(127, 0, 0, 2)), 123);
     assert_eq!(true, IpAddressMask::parse_ipv4("127.0.0.1").unwrap().is_matches(&addr));
@@ -93,3 +186,13 @@ fn test_is_matches() {
     assert_eq!(false, IpAddressMask::parse_ipv4("127.0.0.1/31").unwrap().is_matches(&addr2));
     assert_eq!(true, IpAddressMask::parse_ipv4("127.0.0.1/30").unwrap().is_matches(&addr2));
 }
+
+#[test]
+fn test_ip_address_port() {
+    let ip_address_and_port = IpAddressAndPort::parse(":80");
+    assert_eq!("127.0.0.1:80", format!("{}", ip_address_and_port.unwrap()));
+    let ip_address_and_port = IpAddressAndPort::parse("0.0.0.0:80");
+    assert_eq!("0.0.0.0:80", format!("{}", ip_address_and_port.unwrap()));
+    let ip_address_and_port = IpAddressAndPort::parse("1.1.1.1:80");
+    assert_eq!("1.1.1.1:80", format!("{}", ip_address_and_port.unwrap()));
+}