From 9883edd9118da0a082934d1b1dc0512e9833bda8 Mon Sep 17 00:00:00 2001
From: Jan-Erik Rediger <janerik@fnordig.de>
Date: Sat, 25 May 2024 01:15:14 +0200
Subject: [PATCH] try to copy the cache

this doesn't work so we're gonna throw it out
---
 backend/src/sandbox.rs | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/backend/src/sandbox.rs b/backend/src/sandbox.rs
index ebcfe25..7b2bfc6 100644
--- a/backend/src/sandbox.rs
+++ b/backend/src/sandbox.rs
@@ -78,6 +78,24 @@ fn home_dir(uid: u32) -> Vec<String> {
     ]
 }
 
+fn copy_cache(uid: u32) -> (TempDir, Vec<String>) {
+    let cache_dir = format!("/run/user/{uid}/home/.cache/hare");
+    let tmp_cache_dir = tempfile::tempdir().unwrap();
+
+    let src_dir = "/root/.cache/hare/usr";
+    let opts = fs_extra::dir::CopyOptions::new();
+    fs_extra::copy_items(&[src_dir], tmp_cache_dir.path(), &opts).unwrap();
+
+    let tmp_cache_dir_path = tmp_cache_dir.path().display().to_string();
+
+    (tmp_cache_dir,
+    vec![
+        "--bind".to_string(),
+        tmp_cache_dir_path,
+        cache_dir,
+    ])
+}
+
 fn shared_app_dir() -> (TempDir, Vec<String>) {
     let tmp_app_dir = tempfile::tempdir().unwrap();
     let app_dir_path = tmp_app_dir.path().display().to_string();
@@ -99,6 +117,7 @@ fn command(app_file: &str) -> Vec<String> {
         "/usr/bin/timeout".to_string(), DEFAULT_TIMEOUT.to_string(),
         HARE_COMMAND.to_string(),
         "run".to_string(),
+        "-v".to_string(),
         app_file.to_string(),
     ]
 }
@@ -119,6 +138,9 @@ pub fn run_code(code: &str) -> std::process::Output {
     let home_args = home_dir(uid);
     bwrap_cmd.args(home_args);
 
+    let (_cache_dir, cache_args) = copy_cache(uid);
+    bwrap_cmd.args(cache_args);
+
     let (_passwd, _group, file_args) = passwd_files(uid, gid);
     bwrap_cmd.args(file_args);