Add Windows client packaging and recovery tools

src/auth.rs

@@ -7,6 +7,7 @@ use base64::engine::general_purpose::URL_SAFE_NO_PAD;
 use serde::{Deserialize, Serialize};
 use std::fs;
 use std::io::Write;
+#[cfg(unix)]
 use std::os::unix::fs::OpenOptionsExt;
 use std::time::{SystemTime, UNIX_EPOCH};
 
@@ -82,10 +83,11 @@ pub fn load_or_create_server_secret(config: &ServerConfig) -> Result<[u8; 32]> {
         fs::create_dir_all(parent).with_context(|| format!("create {}", parent.display()))?;
     }
     let secret = crypto::random_32();
-    let mut file = fs::OpenOptions::new()
-        .create_new(true)
-        .write(true)
-        .mode(0o600)
+    let mut options = fs::OpenOptions::new();
+    options.create_new(true).write(true);
+    #[cfg(unix)]
+    options.mode(0o600);
+    let mut file = options
         .open(&path)
         .with_context(|| format!("create {}", path.display()))?;
     file.write_all(URL_SAFE_NO_PAD.encode(secret).as_bytes())?;