Add a newline when saving keys to files

src/keys.rs

@@ -3,7 +3,10 @@ use gethostname::gethostname;
 use log::debug;
 use x25519_dalek::{PublicKey, StaticSecret};
 
-use std::path::{Path, PathBuf};
+use std::{
+    io::Write,
+    path::{Path, PathBuf},
+};
 
 use crate::dirs::get_data_dir;
 
@@ -25,13 +28,14 @@ impl Key {
         BASE64_STANDARD.encode(self.0)
     }
 
-    fn read(path: &Path) -> anyhow::Result<Self> {
+    fn load(path: &Path) -> anyhow::Result<Self> {
         let key_data = std::fs::read_to_string(path)?;
-        Self::try_from_base64(&key_data)
+        Self::try_from_base64(&key_data.trim_end())
     }
 
-    fn write(&self, path: &Path) -> anyhow::Result<()> {
+    fn save(&self, path: &Path) -> anyhow::Result<()> {
-        std::fs::write(path, self.to_base64())?;
+        let mut file = std::fs::File::create(path)?;
+        writeln!(file, "{}", self.to_base64())?;
         Ok(())
     }
 }
@@ -55,18 +59,18 @@ pub(crate) fn get_keys(machine: Option<&PathBuf>) -> Result<WireguardKeyPair, an
     std::fs::create_dir_all(&key_path)?;
     let private_key_path = key_path.join("key");
     let private_key = if private_key_path.is_file() {
-        Key::read(&private_key_path)?
+        Key::load(&private_key_path)?
     } else {
         let key = generate_private_key();
-        key.write(&private_key_path)?;
+        key.save(&private_key_path)?;
         key
     };
     let public_key_path = key_path.join("pubkey");
     let public_key = if public_key_path.is_file() {
-        Key::read(&public_key_path)?
+        Key::load(&public_key_path)?
     } else {
         let key = generate_public_key(&private_key);
-        key.write(&public_key_path)?;
+        key.save(&public_key_path)?;
         key
     };
     Ok(WireguardKeyPair {