server: validate hostname in 'new'

fixes #164

server/src/initialize.rs

@@ -5,7 +5,7 @@ use dialoguer::{theme::ColorfulTheme, Input};
 use indoc::printdoc;
 use publicip::Preference;
 use rusqlite::{params, Connection};
-use shared::{prompts, CidrContents, Endpoint, PeerContents, PERSISTENT_KEEPALIVE_INTERVAL_SECS};
+use shared::{CidrContents, Endpoint, PERSISTENT_KEEPALIVE_INTERVAL_SECS, PeerContents, prompts};
 use wireguard_control::KeyPair;
 
 fn create_database<P: AsRef<Path>>(
@@ -26,7 +26,7 @@ fn create_database<P: AsRef<Path>>(
 pub struct InitializeOpts {
     /// The network name (ex: evilcorp)
     #[structopt(long)]
-    pub network_name: Option<InterfaceName>,
+    pub network_name: Option<Interface>,
 
     /// The network CIDR (ex: 10.42.0.0/16)
     #[structopt(long)]
@@ -122,7 +122,7 @@ pub fn init_wizard(conf: &ServerConfig, opts: InitializeOpts) -> Result<(), Erro
         \n"
     );
 
-    let name: InterfaceName = if let Some(name) = opts.network_name {
+    let name: Interface = if let Some(name) = opts.network_name {
         name
     } else {
         Input::with_theme(&theme)

shared/src/types.rs

@@ -3,16 +3,7 @@ use ipnetwork::IpNetwork;
 use lazy_static::lazy_static;
 use regex::Regex;
 use serde::{Deserialize, Serialize};
-use std::{
-    fmt::{self, Display, Formatter},
-    io,
-    net::{IpAddr, SocketAddr, ToSocketAddrs},
-    ops::{Deref, DerefMut},
-    path::Path,
-    str::FromStr,
-    time::{Duration, SystemTime},
-    vec,
-};
+use std::{fmt::{self, Display, Formatter}, io, net::{IpAddr, SocketAddr, ToSocketAddrs}, ops::{Deref, DerefMut}, path::Path, str::FromStr, time::{Duration, SystemTime}, vec};
 use structopt::StructOpt;
 use url::Host;
 use wireguard_control::{
@@ -22,7 +13,7 @@ use wireguard_control::{
 
 use crate::wg::PeerInfoExt;
 
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq)]
 pub struct Interface {
     name: InterfaceName,
 }
@@ -49,6 +40,12 @@ impl Deref for Interface {
     }
 }
 
+impl Display for Interface {
+    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
+        f.write_str(&self.name.to_string())
+    }
+}
+
 #[derive(Clone, Debug, PartialEq)]
 /// An external endpoint that supports both IP and domain name hosts.
 pub struct Endpoint {