♻️ refactor: make the self-IP code available within the program

ideas.md

@@ -3,3 +3,4 @@ Cool ideas that can be done but probably won't be.
 - Command for shell substituting IPs into commands
 - Arbitrary TCP forwarding of (stdin? stdout? TCP?)
 - Netcat replacement "Just send a file" _including filename_
+- Public-key crypto for trusting peers on first use (Hard cause it requires mutable disk state)

src/ip.rs

@@ -10,6 +10,27 @@ pub enum IpError {
 	Io (#[from] std::io::Error),
 	#[error (transparent)]
 	FromUtf8 (#[from] std::string::FromUtf8Error),
+	#[error ("Self-IP detection is not implemented on Mac OS")]
+	NotImplementedOnMac,
+}
+
+#[cfg(target_os = "linux")]
+pub fn get_ips () -> Result <Vec <Ipv4Addr>, IpError> {
+	let output = linux::get_ip_addr_output ()?;
+	
+	Ok (linux::parse_ip_addr_output (&output))
+}
+
+#[cfg(target_os = "macos")]
+pub fn get_ips () -> Result <Vec <Ipv4Addr>, IpError> {
+	Err (IpError::NotImplementedOnMac)
+}
+
+#[cfg(target_os = "windows")]
+pub fn get_ips () -> Result <Vec <Ipv4Addr>, IpError> {
+	let output = windows::get_ip_config_output ()?;
+	
+	Ok (windows::parse_ip_config_output (&output))
 }
 
 #[cfg(target_os = "linux")]

src/main.rs

@@ -45,11 +45,8 @@ async fn async_main () -> Result <(), AppError> {
 	Ok (())
 }
 
-#[cfg(target_os = "linux")]
 fn my_ips () -> Result <(), AppError> {
-	let output = ip::linux::get_ip_addr_output ()?;
-	
-	for addr in ip::linux::parse_ip_addr_output (&output)
+	for addr in ip::get_ips ()?
 	.iter ()
 	.filter (|a| ! a.is_loopback ())
 	{
@@ -58,21 +55,3 @@ fn my_ips () -> Result <(), AppError> {
 	
 	Ok (())
 }
-
-#[cfg(target_os = "macos")]
-fn my_ips () -> Result <(), AppError> {
-	println! ("my-ips subcommand not implemented for macos");
-	Ok (())
-}
-
-#[cfg(target_os = "windows")]
-fn my_ips () -> Result <(), AppError> {
-	let output = ip::windows::get_ip_config_output ()?;
-	
-	for addr in ip::windows::parse_ip_config_output (&output) {
-		println! ("{:?}", addr);
-	}
-	
-	Ok (())
-}
-