feat: get_ipv6_addresses_from_config + some wip functions

src/bind.rs

@@ -0,0 +1,39 @@
+use std::fs::File;
+use std::io::{BufRead, BufReader, Write};
+use std::net::Ipv6Addr;
+use std::str::FromStr;
+use ipnet::Ipv6Net;
+
+pub(crate) fn get_ipv6_addresses_from_config(filepath: &'static str, ipv6_addresses: &mut Vec<Ipv6Net>, prefix_size: &u8) {
+    let bind_db_file = File::open(filepath)
+        .expect(&*format!("Bind DB File under {} not found.", filepath));
+    let reader = BufReader::new(bind_db_file);
+
+    for line in reader.lines() {
+        if !line.as_ref().unwrap().contains(" AAAA ") || line.as_ref().unwrap().contains(";") {
+            continue;
+        }
+        let ipv6_str = line.as_ref().unwrap().split_whitespace().last().unwrap();
+        ipv6_addresses.push(Ipv6Net::new(Ipv6Addr::from_str(ipv6_str).unwrap(), *prefix_size).unwrap());
+    }
+}
+
+pub(crate) fn get_representative_ip(hostname: &String, config: &String) -> Ipv6Net {
+    return Ipv6Net::from_str("").unwrap();
+}
+
+pub(crate) fn update_netmask(representative: &Ipv6Net, mut current: Ipv6Net, new: &Ipv6Net) {
+    if representative.netmask() != current.netmask() {
+        return;
+    }
+    current = Ipv6Net::with_netmask(current.hostmask(), new.netmask()).unwrap();
+}
+
+pub(crate) fn update_config(config: &String) {}
+
+pub(crate) fn write_config(config_path: &String, config: &String) {
+    let mut file = File::create(config_path)
+        .expect("Wasn't able to create file!");
+
+    let _ = file.write_all(config.as_ref()).expect("config couldn't be written");
+}