fix: Cleanup temporary file after feeding auth data

Related: #366

apps/gpclient/src/launch_gui.rs

@@ -1,4 +1,4 @@
-use std::{collections::HashMap, fs, path::PathBuf};
+use std::{collections::HashMap, env::temp_dir, fs, path::PathBuf};
 
 use clap::Args;
 use directories::ProjectDirs;
@@ -82,6 +82,11 @@ impl<'a> LaunchGuiHandler<'a> {
 
 async fn feed_auth_data(auth_data: &str) -> anyhow::Result<()> {
   let _ = tokio::join!(feed_auth_data_gui(auth_data), feed_auth_data_cli(auth_data));
+
+  // Cleanup the temporary file
+  let html_file = temp_dir().join("gpauth.html");
+  let _ = std::fs::remove_file(html_file);
+
   Ok(())
 }
 

crates/gpapi/src/auth.rs

@@ -70,6 +70,7 @@ impl SamlAuthData {
 
       let auth_data: SamlAuthData = serde_urlencoded::from_str(auth_data).map_err(|e| {
         warn!("Failed to parse token auth data: {}", e);
+        warn!("Auth data: {}", auth_data);
         AuthDataParseError::Invalid
       })?;
 

crates/gpapi/src/process/browser_authenticator.rs

@@ -1,4 +1,7 @@
-use std::{env::temp_dir, io::Write};
+use std::{env::temp_dir, fs, io::Write, os::unix::fs::PermissionsExt};
+
+use anyhow::bail;
+use log::warn;
 
 pub struct BrowserAuthenticator<'a> {
   auth_request: &'a str,
@@ -14,8 +17,18 @@ impl BrowserAuthenticator<'_> {
       open::that_detached(self.auth_request)?;
     } else {
       let html_file = temp_dir().join("gpauth.html");
-      let mut file = std::fs::File::create(&html_file)?;
 
+      // Remove the file and error if permission denied
+      if let Err(err) = fs::remove_file(&html_file) {
+        if err.kind() != std::io::ErrorKind::NotFound {
+          warn!("Failed to remove the temporary file: {}", err);
+          bail!("Please remove the file manually: {:?}", html_file);
+        }
+      }
+
+      let mut file = fs::File::create(&html_file)?;
+
+      file.set_permissions(fs::Permissions::from_mode(0o600))?;
       file.write_all(self.auth_request.as_bytes())?;
 
       open::that_detached(html_file)?;
@@ -24,11 +37,3 @@ impl BrowserAuthenticator<'_> {
     Ok(())
   }
 }
-
-impl Drop for BrowserAuthenticator<'_> {
-  fn drop(&mut self) {
-    // Cleanup the temporary file
-    let html_file = temp_dir().join("gpauth.html");
-    let _ = std::fs::remove_file(html_file);
-  }
-}