From 2de77003fbb79a2df0842f15910d32b5b1429c75 Mon Sep 17 00:00:00 2001
From: Hatter Jiang <jht5945@gmail.com>
Date: Sat, 21 Jan 2023 00:50:14 +0800
Subject: [PATCH] feat: add container

---
 interface.wit                    | 13 -------------
 javascript-container/Cargo.toml  | 12 ++++++++++++
 javascript-container/src/main.rs | 33 ++++++++++++++++++++++++++++++++
 javascript-engine/Cargo.toml     |  1 +
 4 files changed, 46 insertions(+), 13 deletions(-)
 delete mode 100644 interface.wit
 create mode 100644 javascript-container/Cargo.toml
 create mode 100644 javascript-container/src/main.rs

diff --git a/interface.wit b/interface.wit
deleted file mode 100644
index d65ea1b..0000000
--- a/interface.wit
+++ /dev/null
@@ -1,13 +0,0 @@
-interface imports {
-  thunk: func()
-}
-
-interface exports {
-  thunk: func()
-}
-
-world smoke {
-  import imports: imports
-  default export exports
-}
-
diff --git a/javascript-container/Cargo.toml b/javascript-container/Cargo.toml
new file mode 100644
index 0000000..f1b3bd9
--- /dev/null
+++ b/javascript-container/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "javascript-container"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+anyhow = "1.0"
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+wasmtime = "4.0"
diff --git a/javascript-container/src/main.rs b/javascript-container/src/main.rs
new file mode 100644
index 0000000..c5937a1
--- /dev/null
+++ b/javascript-container/src/main.rs
@@ -0,0 +1,33 @@
+use anyhow::Result;
+use wasmtime::{Config, Engine, Linker, Module, Store};
+
+fn main() -> Result<()> {
+    let config = Config::default();
+    let engine = Engine::new(&config).unwrap();
+
+    let wasm_bytes = include_bytes!("/Users/hatterjiang/Code/hattergit/secure-javascript-container/javascript-engine/target/wasm32-unknown-unknown/debug/javascript_engine.wasm");
+    let module = Module::new(&engine, wasm_bytes)?;
+
+    let linker = Linker::new(&engine);
+    let mut store = Store::new(&engine, ());
+
+    let instance = linker.instantiate(&mut store, &module)?;
+
+    let memory = instance.get_memory(&mut store, "memory").expect("SHOULD NOT HAPPEN");
+    let malloc = instance.get_typed_func::<i32, i32>(&mut store, "malloc")?;
+    let free = instance.get_typed_func::<(i32, i32), ()>(&mut store, "free")?;
+    let eval = instance.get_typed_func::<(i32, i32), (i32, i32)>(&mut store, "eval")?;
+
+    let js = "1+2";
+    let js_bytes = js.as_bytes();
+    let js_bytes_len = js_bytes.len();
+    let ptr = malloc.call(&mut store, js.as_bytes().len() as i32)?;
+    let memory_data_mut = memory.data_mut(&mut store);
+    for i in 0..js_bytes_len {
+        memory_data_mut[ptr as usize + i] = js_bytes[i];
+    }
+    let eval_result = eval.call(&mut store, (ptr, js_bytes_len as i32))?;
+    println!("Eval result: {:?}", eval_result);
+
+    Ok(())
+}
diff --git a/javascript-engine/Cargo.toml b/javascript-engine/Cargo.toml
index 75a20c4..498eeda 100644
--- a/javascript-engine/Cargo.toml
+++ b/javascript-engine/Cargo.toml
@@ -9,6 +9,7 @@ edition = "2021"
 crate-type = ['cdylib']
 
 [dependencies]
+anyhow = "1.0.68"
 boa_engine = { version = "0.16.0", path = "external/boa/boa_engine"}
 getrandom = { version = "0.2.8", features = ["js"] }
 serde = { version = "1.0", features = ["derive"] }