diff --git a/.github/copilot-instructions.md b/.github/copilot-instructions.md index 0e6ec56..f2701aa 100644 --- a/.github/copilot-instructions.md +++ b/.github/copilot-instructions.md @@ -2,7 +2,7 @@ - When running examples in this repository, use the `Justfile` recipes instead of invoking `cargo run` or `python` directly. - Use `just examples` from the repository root to run the full example suite. -- To run examples for a specific sandbox, use module-scoped recipes: `just wasm examples`, `just js examples`, `just python examples`. +- To run examples for a specific sandbox, use module-scoped recipes: `just wasm examples`, `just js examples`, `just python examples`, `just dotnet examples`. - Use `just build` from the repository root to build all subprojects and SDKs. - Reason: the example commands depend on `WIT_WORLD` being set to `src/wasm_sandbox/wit/sandbox-world.wasm`; the `Justfile` handles that setup. @@ -10,4 +10,4 @@ Make things cross-platform where possible (window/mac/linux). Mac supprot for h - **After changing WIT interfaces**: you must run `just build` (or at minimum rebuild the guest `.wasm` and `.aot` files) before running examples. The pre-compiled guest binaries embed the WIT signature; a mismatch causes "Host function vector parameter missing length" errors at runtime. -- **Formatting and linting**: always use `just fmt` and `just fmt-check` from the repository root instead of invoking `cargo fmt`, `ruff format`, or `ruff check` directly. The Justfile recipes run multiple tools in sequence (e.g. `ruff format` + `ruff check --fix` for Python) and missing a step causes CI failures. \ No newline at end of file +- **Formatting and linting**: always use `just fmt` and `just fmt-check` from the repository root instead of invoking `cargo fmt`, `ruff format`, `ruff check`, or `dotnet format` directly. The Justfile recipes run multiple tools in sequence and missing a step causes CI failures. \ No newline at end of file diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 4c6112b..a3d16e2 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -99,6 +99,79 @@ jobs: - name: Run examples run: just wasm examples + dotnet-sdk: + name: .NET SDK (${{ matrix.os }}) + runs-on: ${{ matrix.os }} + strategy: + matrix: + os: [ubuntu-latest, windows-latest] + steps: + - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2 + + - uses: actions-rust-lang/setup-rust-toolchain@150fca883cd4034361b621bd4e6a9d34e5143606 # v1.15.4 + with: + toolchain: nightly, 1.94 + components: rustfmt, clippy + rustflags: "" + + - uses: actions/setup-dotnet@v4 + with: + dotnet-version: '8.0.x' + + - uses: astral-sh/setup-uv@cec208311dfd045dd5311c1add060b2062131d57 # v8.0.0 + + - name: Install Python + run: uv python install 3.12 + + - uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0 + with: + node-version: "latest" + cache: npm + cache-dependency-path: src/wasm_sandbox/guests/javascript/package-lock.json + + - name: Install just + run: cargo install --locked just + + - name: Install clang (Linux) + if: runner.os == 'Linux' + run: sudo apt-get update && sudo apt-get install -y clang + + - name: Install LLVM (Windows) + if: runner.os == 'Windows' + run: choco install llvm -y + + - name: Enable KVM + if: runner.os == 'Linux' && !env.ACT + run: | + echo 'KERNEL=="kvm", GROUP="kvm", MODE="0666", OPTIONS+="static_node=kvm"' | sudo tee /etc/udev/rules.d/99-kvm4all.rules + sudo udevadm control --reload-rules + sudo udevadm trigger --name-match=kvm + sudo chmod 666 /dev/kvm + + - name: Build guest modules + run: just wasm guest-build + + - name: Format check + run: just dotnet fmt-check + + - name: Lint + run: just dotnet lint + + - name: Build + run: just dotnet build + + - name: Test Rust FFI + run: just dotnet test-rust + + - name: Test .NET + run: just dotnet test-dotnet + + - name: Run examples + run: just dotnet examples + + - name: Package test + run: just dotnet package-test + python-sdk: name: Python SDK (${{ matrix.os }}) runs-on: ${{ matrix.os }} diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml index ff6504d..8ce737c 100644 --- a/.github/workflows/publish.yml +++ b/.github/workflows/publish.yml @@ -1,4 +1,4 @@ -name: Publish Python SDK +name: Publish Python SDK & .NET SDK on: push: @@ -112,3 +112,49 @@ jobs: - name: Publish to PyPI run: just python python-publish + + # Build and publish .NET NuGet packages. + dotnet-publish: + if: ${{ !github.event.act }} + name: Publish .NET NuGet packages + runs-on: ubuntu-latest + environment: + name: nuget + steps: + - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2 + + - uses: actions-rust-lang/setup-rust-toolchain@150fca883cd4034361b621bd4e6a9d34e5143606 # v1.15.4 + with: + cache-key: release + rustflags: "" + + - uses: actions/setup-dotnet@v4 + with: + dotnet-version: '8.0.x' + + - name: Install just + run: cargo install --locked just + + - name: Install clang + run: sudo apt-get update && sudo apt-get install -y clang + + - name: Enable KVM + run: | + echo 'KERNEL=="kvm", GROUP="kvm", MODE="0666", OPTIONS+="static_node=kvm"' | sudo tee /etc/udev/rules.d/99-kvm4all.rules + sudo udevadm control --reload-rules + sudo udevadm trigger --name-match=kvm + sudo chmod 666 /dev/kvm + + - name: Build guest modules + run: just wasm guest-build + + - name: Build and pack + run: just dotnet dist + + - name: Package test + run: just dotnet package-test release + + - name: Publish to NuGet + env: + NUGET_API_KEY: ${{ secrets.NUGET_API_KEY }} + run: just dotnet publish diff --git a/.gitignore b/.gitignore index 3fb8d84..d7b3fbb 100644 --- a/.gitignore +++ b/.gitignore @@ -16,4 +16,12 @@ wheels/ pip-wheel-metadata/ src/sdk/python/wasm_backend/Cargo.lock src/sdk/python/hyperlight_js_backend/Cargo.lock +src/sdk/dotnet/ffi/Cargo.lock docs/end-user-overview-slides.html + +# dotnet +[Bb]in/ +[Oo]bj/ +.vs/ +*.user +*.nupkg diff --git a/Cargo.lock b/Cargo.lock index 5e0f17c..f8d81ea 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -1561,15 +1561,14 @@ dependencies = [ [[package]] name = "hyper-rustls" -version = "0.27.7" +version = "0.27.8" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "e3c93eb611681b207e1fe55d5a71ecf91572ec8a6705cdb6857f7d8d5242cf58" +checksum = "c2b52f86d1d4bc0d6b4e6826d960b1b333217e07d36b882dca570a5e1c48895b" dependencies = [ "http", "hyper", "hyper-util", - "rustls 0.23.37", - "rustls-pki-types", + "rustls 0.23.38", "tokio", "tokio-rustls 0.26.4", "tower-service", @@ -1843,6 +1842,21 @@ dependencies = [ "pyo3", ] +[[package]] +name = "hyperlight-sandbox-dotnet-ffi" +version = "0.3.0" +dependencies = [ + "anyhow", + "hyperlight-javascript-sandbox", + "hyperlight-sandbox", + "hyperlight-wasm-sandbox", + "libc", + "log", + "serde_json", + "tempfile", + "windows-sys 0.59.0", +] + [[package]] name = "hyperlight-sandbox-pyo3-common" version = "0.3.0" @@ -2931,7 +2945,7 @@ dependencies = [ "quinn-proto", "quinn-udp", "rustc-hash", - "rustls 0.23.37", + "rustls 0.23.38", "socket2", "thiserror", "tokio", @@ -2951,7 +2965,7 @@ dependencies = [ "rand 0.9.2", "ring", "rustc-hash", - "rustls 0.23.37", + "rustls 0.23.38", "rustls-pki-types", "slab", "thiserror", @@ -3217,7 +3231,7 @@ dependencies = [ "percent-encoding", "pin-project-lite", "quinn", - "rustls 0.23.37", + "rustls 0.23.38", "rustls-pki-types", "serde", "serde_json", @@ -3401,14 +3415,14 @@ dependencies = [ [[package]] name = "rustls" -version = "0.23.37" +version = "0.23.38" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "758025cb5fccfd3bc2fd74708fd4682be41d99e5dff73c377c0646c6012c73a4" +checksum = "69f9466fb2c14ea04357e91413efb882e2a6d4a406e625449bc0a5d360d53a21" dependencies = [ "once_cell", "ring", "rustls-pki-types", - "rustls-webpki 0.103.10", + "rustls-webpki 0.103.11", "subtle", "zeroize", ] @@ -3436,9 +3450,9 @@ dependencies = [ [[package]] name = "rustls-webpki" -version = "0.103.10" +version = "0.103.11" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "df33b2b81ac578cabaf06b89b0631153a3f416b0a886e8a7a1707fb51abbd1ef" +checksum = "20a6af516fea4b20eccceaf166e8aa666ac996208e8a644ce3ef5aa783bc7cd4" dependencies = [ "ring", "rustls-pki-types", @@ -3880,7 +3894,7 @@ version = "0.26.4" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "1729aa945f29d91ba541258c8df89027d5792d85a8841fb65e8bf0f4ede4ef61" dependencies = [ - "rustls 0.23.37", + "rustls 0.23.38", "tokio", ] diff --git a/Cargo.toml b/Cargo.toml index 2fd0279..4c237ca 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -6,6 +6,7 @@ members = [ "src/sdk/python/pyo3_common", "src/sdk/python/wasm_backend", "src/sdk/python/hyperlight_js_backend", + "src/sdk/dotnet/ffi", ] # nanvix_sandbox requires nightly Rust (nanvix uses #![feature(never_type)]) exclude = [ @@ -27,17 +28,19 @@ hyperlight-sandbox-pyo3-common = { path = "src/sdk/python/pyo3_common" } hyperlight-common = { version = "0.14.0", default-features = false } hyperlight-component-macro = { version = "0.14.0" } hyperlight-host = { version = "0.14.0", default-features = false, features = ["executable_heap"] } -hyperlight-wasm = { git = "https://github.com/jsturtevant/hyperlight-wasm", rev = "05a9eea" } #branch util-compont-fixes +hyperlight-wasm = { git = "https://github.com/jsturtevant/hyperlight-wasm", rev = "05a9eea" } pyo3 = { version = "0.28", features = ["extension-module"] } -# Patched component-util (name collision fix, flags fix, empty-ns fix) -# https://github.com/jsturtevant/hyperlight-1/tree/wasm-component-fixes +# Patched component-util β€” the published 0.14.0 has name collision, flags, +# and empty-namespace bugs that break the generated host bindings. +# This patch will be removed once the fixes are merged upstream. +[patch.crates-io] +hyperlight-component-util = { git = "https://github.com/jsturtevant/hyperlight-1", rev = "4701257034306b0978d49cc9140bc0b12de3b409", package = "hyperlight-component-util" } + +# hyperlight-wasm 0.13.1 (git) depends on hyperlight-* from the hyperlight-dev +# GitHub org. Redirect those to the published 0.14.0 crates.io versions. [patch."https://github.com/hyperlight-dev/hyperlight"] hyperlight-common = { version = "0.14.0" } hyperlight-guest = { version = "=0.14.0" } hyperlight-guest-bin = { version = "=0.14.0" } hyperlight-host = { version = "0.14.0" } -hyperlight-component-util = { git = "https://github.com/jsturtevant/hyperlight-1", rev="4701257034306b0978d49cc9140bc0b12de3b409", package = "hyperlight-component-util" } - -[patch.crates-io] -hyperlight-component-util = { git = "https://github.com/jsturtevant/hyperlight-1", rev="4701257034306b0978d49cc9140bc0b12de3b409", package = "hyperlight-component-util" } diff --git a/Justfile b/Justfile index c371ac0..b6294b3 100644 --- a/Justfile +++ b/Justfile @@ -4,35 +4,36 @@ mod wasm 'src/wasm_sandbox/Justfile' mod js 'src/javascript_sandbox/Justfile' mod nanvix 'src/nanvix_sandbox/Justfile' mod python 'src/sdk/python/Justfile' +mod dotnet 'src/sdk/dotnet/Justfile' mod examples_mod 'examples/Justfile' default-target := "debug" -clean: wasm::clean python::clean +clean: wasm::clean python::clean dotnet::clean cargo clean #### BUILD TARGETS #### -build target=default-target: (wasm::build target) (js::build target) nanvix::build python::build +build target=default-target: (wasm::build target) (js::build target) nanvix::build python::build (dotnet::build target) lint: lint-rust wasm::lint js::lint python::lint lint-rust: cargo clippy -p hyperlight-sandbox --all-targets --features test-utils -- -D warnings -fmt: fmt-rust python::fmt +fmt: fmt-rust python::fmt dotnet::fmt fmt-rust: cargo +nightly fmt --all -fmt-check: fmt-check-rust python::fmt-check +fmt-check: fmt-check-rust python::fmt-check dotnet::fmt-check fmt-check-rust: cargo +nightly fmt --all -- --check #### TESTS #### -test: wasm::guest-build wasm::js-guest-build python::build python::python-test test-rust wasm::test +test: wasm::guest-build wasm::js-guest-build python::build python::python-test test-rust wasm::test dotnet::test-rust dotnet::test fuzz seconds="60": (python::python-fuzz seconds) @@ -51,7 +52,7 @@ python-dist-backends: wasm::_clean-stale-wasm wasm::guest-compile-wit js::_clean python-wheelhouse-test: python-dist python::python-wheelhouse-test -examples target=default-target: (wasm::examples target) (js::examples target) python::examples +examples target=default-target: (wasm::examples target) (js::examples target) python::examples dotnet::examples integration-examples target=default-target: (wasm::guest-build target) wasm::js-guest-build python::build examples_mod::integration-examples diff --git a/README.md b/README.md index 8bfeffe..321449b 100644 --- a/README.md +++ b/README.md @@ -16,7 +16,7 @@ Supported backends: ## Overview -hyperlight-sandbox provides a unified API across multiple isolation backends. All backends share a common capability model. A python and rust SDK is provided. +hyperlight-sandbox provides a unified API across multiple isolation backends. All backends share a common capability model. A python, .NET, and rust SDK is provided. - **Secure code execution** -- Run untrusted code in hardware isolated sandboxes (KVM, MSHV, Hyper-v) - **Host tool dispatch** -- Register callables as tools; guest code invokes them by name with schema-validated arguments @@ -79,6 +79,35 @@ print(f"3 + 4 = {total}, HTTP status: {resp['status']}") print(result.stdout) ``` +.NET SDK: + +```bash +just wasm guest-build # build the guest module +just dotnet build # build the .NET SDK +``` + +```csharp +using HyperlightSandbox.Api; + +using var sandbox = new SandboxBuilder() + .WithModulePath("python-sandbox.aot") + .Build(); + +sandbox.RegisterTool("add", args => args.a + args.b); +sandbox.AllowDomain("https://httpbin.org"); + +var result = sandbox.Run(""" + total = call_tool("add", a=3, b=4) + resp = http_get("https://httpbin.org/get") + print(f"3 + 4 = {total}, HTTP status: {resp['status']}") + """); +Console.WriteLine(result.Stdout); + +record MathArgs(double a, double b); +``` + +For full .NET SDK documentation, see [src/sdk/dotnet/README.md](src/sdk/dotnet/README.md). + ## Sandbox Backends ### Wasm Component Sandbox diff --git a/docs/dotnet-sdk-plan.md b/docs/dotnet-sdk-plan.md new file mode 100644 index 0000000..13d5f7d --- /dev/null +++ b/docs/dotnet-sdk-plan.md @@ -0,0 +1,613 @@ +# .NET SDK Implementation Plan β€” hyperlight-sandbox + +> **Status**: 🟑 In Progress +> **Last Updated**: 2026-04-13 +> **Tracking**: Update this document as phases complete. + +## Overview + +Create an idiomatic .NET 8.0+ SDK for hyperlight-sandbox, mirroring the Python SDK's API surface (`Sandbox`, `ExecutionResult`, tool registration, filesystem, networking, snapshots). Architecture follows [PR deislabs/hyperlight-js#292](https://github.com/deislabs/hyperlight-js/pull/292) (Rust cdylib β†’ P/Invoke β†’ high-level C# API). + +**Key deliverables:** +- Core SDK: `HyperlightSandbox.Api` + `HyperlightSandbox.PInvoke` NuGet packages +- Extensions: `HyperlightSandbox.Extensions.AI` for agent framework integration +- Samples: GitHub Copilot SDK + Microsoft Agent Framework examples +- Tests: 93+ xUnit tests across 9 test classes +- CI: Integrated into existing GitHub Actions workflows + +## Decisions + +| # | Decision | Choice | Rationale | +|---|----------|--------|-----------| +| 1 | Backend | WASM only initially | nanvix requires nightly; hyperlight-js can be added later | +| 2 | Target Framework | net8.0 (consumers on 9.0+ just use it) | Current LTS | +| 3 | FFI approach | Rust cdylib + P/Invoke | Proven pattern from PR #292 | +| 4 | Tool callbacks | Function pointer (`[UnmanagedCallersOnly]`) | Synchronous dispatch matching Python SDK | +| 5 | Async tools | DEFERRED β€” sync-only initially | Async risks deadlocks on sandbox thread | +| 6 | Async pattern | Sync primary, `Task.Run()` async convenience | Per PR #292 guidance | +| 7 | JSON | `System.Text.Json` only | No Newtonsoft; matches PR #292 | +| 8 | Thread safety | Not thread-safe; thread-affinity check | Document clearly | +| 9 | Module resolution | Explicit path to `.wasm`/`.aot` only (BYOM) | Simplified vs Python's importlib resolution | +| 10 | Guest modules | Users bring their own | No pre-built guest NuGet packages | +| 11 | Error handling | Both FFI error codes AND custom C# exceptions | Structured classification across boundary | +| 12 | Extensions.AI | Included in initial scope | Agent framework samples need it | +| 13 | Location | `src/sdk/dotnet/` | Parallel to `src/sdk/python/` | + +## Issues from PR #292 to Address + +| PR Issue | .NET SDK Impact | Status | +|----------|----------------|--------| +| #440 β€” Thread safety | Thread-affinity check (capture `ManagedThreadId` in ctor, assert) | ⬜ | +| #439 β€” Host function registration | Full implementation via function pointer callbacks | ⬜ | +| #437 β€” Tracing | Defer; add `Activity` span extension points later | ⬜ Deferred | +| #438 β€” Logging | Defer; errors via FFIResult for now | ⬜ Deferred | +| #442 β€” Metrics | Defer | ⬜ Deferred | +| #443 β€” Unified FFI layer | Design FFI with future JS backend in mind | ⬜ | +| GC.KeepAlive barriers | After every FFI call using SafeHandle | ⬜ Critical | +| GCHandle pinning | Tool delegates pinned to prevent GC while Rust holds fn ptr | ⬜ Critical | + +--- + +## Phase 1: FFI Foundation (Rust cdylib) βš™οΈ + +> **Status**: βœ… Complete (68 tests passing, 0 warnings) +> **Depends on**: Nothing +> **Crate**: `src/sdk/dotnet/ffi/` + +### Steps + +- [ ] **1.1** Create `src/sdk/dotnet/ffi/Cargo.toml` + - Depends on `hyperlight-sandbox` (core traits), `hyperlight-wasm-sandbox` (Wasm backend), `serde_json`, `log` + - `crate-type = ["cdylib"]` + +- [ ] **1.2** Create `src/sdk/dotnet/ffi/src/lib.rs` β€” C-compatible FFI exports (~800-1000 LOC) + + **Types:** + - `FFIResult { is_success: bool, error_code: u32, value: *mut c_char }` β€” extended from PR #292 with error codes + - `FFIErrorCode` enum: `Success = 0`, `Unknown = 1`, `Timeout = 2`, `Poisoned = 3`, `PermissionDenied = 4`, `GuestError = 5`, `InvalidArgument = 6`, `IoError = 7` + - `FFISandboxOptions { module_path, heap_size, stack_size, ... }` β€” configuration struct + - `ToolCallbackFn = extern "C" fn(args_json: *const c_char) -> *mut c_char` β€” tool callback type + + **Sandbox lifecycle:** + - `hyperlight_sandbox_create(options: FFISandboxOptions, out handle) -> FFIResult` + - `hyperlight_sandbox_free(handle)` + + **Configuration (pre-run):** + - `hyperlight_sandbox_set_input_dir(handle, path) -> FFIResult` + - `hyperlight_sandbox_set_output_dir(handle, path) -> FFIResult` + - `hyperlight_sandbox_set_temp_output(handle, enabled) -> FFIResult` + - `hyperlight_sandbox_allow_domain(handle, target, methods_json) -> FFIResult` + + **Tool registration:** + - `hyperlight_sandbox_register_tool(handle, name, schema_json, callback) -> FFIResult` + - Schema JSON: `{"args": {"a": "Number", "b": "Number"}, "required": ["a", "b"]}` + + **Execution:** + - `hyperlight_sandbox_run(handle, code) -> FFIResult` (value = JSON `{"stdout":"...","stderr":"...","exit_code":0}`) + + **Filesystem:** + - `hyperlight_sandbox_get_output_files(handle) -> FFIResult` (value = JSON array) + - `hyperlight_sandbox_output_path(handle) -> FFIResult` (value = path string or null) + + **Snapshot/Restore:** + - `hyperlight_sandbox_snapshot(handle) -> FFIResult` (value = snapshot handle) + - `hyperlight_sandbox_restore(handle, snapshot) -> FFIResult` + - `hyperlight_sandbox_free_snapshot(snapshot)` + + **Utility:** + - `hyperlight_sandbox_free_string(ptr)` + - `hyperlight_sandbox_get_version() -> *mut c_char` + + **Patterns** (from PR #292): + - `safe_cstring()` helper for null-byte sanitization + - Null-pointer checks on all inputs + - `Box::into_raw` / `Box::from_raw` for handle management + - All errors as UTF-8 `CString` pointers, caller frees + +- [ ] **1.3** Add `src/sdk/dotnet/ffi` to root `Cargo.toml` workspace members + +### Reference files +- `src/hyperlight_sandbox/src/lib.rs` β€” `SandboxBuilder`, `Sandbox`, `Guest` trait +- `src/hyperlight_sandbox/src/tools.rs` β€” `ToolRegistry`, `ToolSchema`, `ArgType` +- `src/sdk/python/wasm_backend/src/lib.rs` β€” Lazy init, tool registry building + +--- + +## Phase 2: P/Invoke Layer (.NET) πŸ”Œ + +> **Status**: βœ… Complete (0 warnings, 0 errors, format clean, analyzers clean) +> **Depends on**: Phase 1 +> **Project**: `src/sdk/dotnet/core/PInvoke/HyperlightSandbox.PInvoke.csproj` + +### Steps + +- [ ] **2.1** Create `HyperlightSandbox.PInvoke.csproj` + - `TargetFramework: net8.0`, `AllowUnsafeBlocks`, `Nullable`, `AnalysisMode: All` + - NuGet metadata: `Hyperlight.HyperlightSandbox.PInvoke` + +- [ ] **2.2** Create `AssemblyInfo.cs` β€” `[assembly: DisableRuntimeMarshalling]` + +- [ ] **2.3** Create `FFIResult.cs` + - `[StructLayout(LayoutKind.Sequential)]` struct matching Rust `FFIResult` + - `ThrowIfError()` β€” maps `error_code` to exception types + - `StringFromPtr(IntPtr)` β€” reads + frees string + +- [ ] **2.4** Create `FFIErrorCode.cs` β€” enum matching Rust `FFIErrorCode` + +- [ ] **2.5** Create `SafeHandles.cs` + - `SandboxSafeHandle` β†’ calls `hyperlight_sandbox_free` + - `SnapshotSafeHandle` β†’ calls `hyperlight_sandbox_free_snapshot` + - Each with `MakeHandleInvalid()`, `Interlocked.Exchange` in `ReleaseHandle()` + +- [ ] **2.6** Create `SafeNativeMethods.cs` + - All `[LibraryImport]` declarations + - `[UnmanagedCallConv(CallConvs = [typeof(CallConvCdecl)])]` + - `[MarshalAs(UnmanagedType.LPUTF8Str)]` for strings + - Custom `NativeLibrary.SetDllImportResolver` for platform-specific loading + - `#pragma warning disable CA5392` with justification + +- [ ] **2.7** Create `SandboxOptions.cs` β€” `FFISandboxOptions` struct + +- [ ] **2.8** Create `ToolCallbackDelegate.cs` β€” `[UnmanagedFunctionPointer(CallingConvention.Cdecl)]` + +- [ ] **2.9** Create `build/net8.0/Hyperlight.HyperlightSandbox.PInvoke.targets` β€” native lib copy for NuGet consumers + +### Reference files +- PR #292: `src/dotnet-host-api/src/dotnet/PInvoke/` β€” all files + +--- + +## Phase 3: High-Level C# API 🎯 + +> **Status**: βœ… Complete (0 warnings, 0 errors, format clean, thread-affinity + GCHandle pinning) +> **Depends on**: Phase 2 +> **Project**: `src/sdk/dotnet/core/Api/HyperlightSandbox.Api.csproj` + +### Steps + +- [ ] **3.1** Create `HyperlightSandbox.Api.csproj` + - References `HyperlightSandbox.PInvoke` + - NuGet metadata: `Hyperlight.HyperlightSandbox.Api` + +- [ ] **3.2** Create `ExecutionResult.cs` + ```csharp + public sealed record ExecutionResult(string Stdout, string Stderr, int ExitCode) + { + public bool Success => ExitCode == 0; + } + ``` + +- [ ] **3.3** Create `SandboxBuilder.cs` β€” fluent builder + ```csharp + public class SandboxBuilder + { + public SandboxBuilder WithModulePath(string path); + public SandboxBuilder WithHeapSize(string size); // "25Mi" format + public SandboxBuilder WithStackSize(string size); + public SandboxBuilder WithInputDir(string path); + public SandboxBuilder WithOutputDir(string path); + public SandboxBuilder WithTempOutput(bool enabled = true); + public Sandbox Build(); + } + ``` + +- [ ] **3.4** Create `Sandbox.cs` β€” main API class + ```csharp + public sealed class Sandbox : IDisposable + { + // Tool registration (must be called before first Run) + public void RegisterTool(string name, Delegate handler); + public void RegisterTool(string name, Func handler); + + // Code execution + public ExecutionResult Run(string code); + public Task RunAsync(string code); + + // Network + public void AllowDomain(string target, IReadOnlyList? methods = null); + + // Filesystem + public IReadOnlyList GetOutputFiles(); + public string? OutputPath { get; } + + // Snapshot/Restore + public SandboxSnapshot Snapshot(); + public Task SnapshotAsync(); + public void Restore(SandboxSnapshot snapshot); + public Task RestoreAsync(SandboxSnapshot snapshot); + + public const int MaxCodeSize = 10 * 1024 * 1024; + + public void Dispose(); + } + ``` + + **Implementation details:** + - Thread-affinity check: capture `Thread.CurrentThread.ManagedThreadId` in ctor, assert on each public method + - `GC.KeepAlive(this)` after every FFI call + - Tool delegates pinned with `GCHandle.Alloc(callback, GCHandleType.Normal)`, stored in `List`, freed in `Dispose()` + - Lazy initialization: `SandboxBuilder.Build()` creates `SandboxSafeHandle` but tool registration happens before first `Run()` + +- [ ] **3.5** Create `SandboxSnapshot.cs` β€” wraps `SnapshotSafeHandle`, `IDisposable` + +- [ ] **3.6** Create `ToolSchemaBuilder.cs` β€” auto-generates JSON schema from `Func` type parameters via reflection + +- [ ] **3.7** Create `SizeParser.cs` β€” parses "25Mi", "400Mi", "1Gi" to bytes + +- [ ] **3.8** Create exception types: + - `SandboxException` (base) + - `SandboxTimeoutException : SandboxException` + - `SandboxPoisonedException : SandboxException` + - `SandboxPermissionException : SandboxException` + - `SandboxGuestException : SandboxException` + +### Reference files +- PR #292: `src/dotnet-host-api/src/dotnet/Api/` β€” `SandboxBuilder.cs`, `Sandbox.cs`, `LoadedSandbox.cs` +- Python SDK: `src/sdk/python/core/hyperlight_sandbox/__init__.py` + +--- + +## Phase 4: Extensions.AI Package πŸ€– + +> **Status**: βœ… Complete (CodeExecutionTool + AIFunction integration) +> **Depends on**: Phase 3 +> **Project**: `src/sdk/dotnet/core/Extensions.AI/HyperlightSandbox.Extensions.AI.csproj` + +### Steps + +- [ ] **4.1** Create `HyperlightSandbox.Extensions.AI.csproj` + - References `HyperlightSandbox.Api` + - Depends on `Microsoft.Extensions.AI.Abstractions` + - NuGet metadata: `Hyperlight.HyperlightSandbox.Extensions.AI` + +- [ ] **4.2** Create `CodeExecutionTool.cs` β€” wraps `Sandbox` for agent integration + ```csharp + public sealed class CodeExecutionTool : IDisposable + { + public CodeExecutionTool(SandboxBuilder? builder = null); + + // Register tools that guest code can call + public void RegisterTool(string name, Func handler); + + // Execute code in sandbox (snapshot/restore per call for clean state) + public ExecutionResult Execute(string code, + IDictionary? inputs = null); + + // Get as AIFunction for Copilot SDK / MAF integration + public AIFunction AsAIFunction(string name = "execute_code", + string description = "Execute code in a secure sandbox"); + + public void Dispose(); + } + ``` + +- [ ] **4.3** Create `SandboxToolFactory.cs` β€” helpers for `AIFunctionFactory.Create()` integration + +### Reference files +- Python SDK: `CodeExecutionTool` in `src/sdk/python/core/hyperlight_sandbox/__init__.py` +- Copilot SDK: `AIFunctionFactory.Create()` patterns + +--- + +## Phase 5: Examples πŸ“ + +> **Status**: βœ… Complete (7 examples: Basic, Tools, FS, Network, Snapshot, Copilot SDK, MAF) +> **Depends on**: Phase 3 (basics), Phase 4 (agent examples) + +### Steps + +- [ ] **5.1** Create `BasicExample` β€” run code, capture stdout *(mirrors `python_basics.py`)* +- [ ] **5.2** Create `ToolRegistrationExample` β€” register tools, guest calls `call_tool()` *(mirrors agent patterns)* +- [ ] **5.3** Create `FilesystemExample` β€” input/output dirs, temp output *(mirrors `python_filesystem_demo.py`)* +- [ ] **5.4** Create `NetworkExample` β€” `AllowDomain` + guest HTTP *(mirrors `python_network_demo.py`)* +- [ ] **5.5** Create `SnapshotExample` β€” snapshot/restore for fast reset +- [ ] **5.6** Create `CopilotSdkExample` β€” `GitHub.Copilot.SDK` v0.2.2 integration + - `CopilotClient` + `CreateSessionAsync` + - Tools via `AIFunctionFactory.Create()`: `execute_code`, `compute`, `fetch_data` + - System message steers model to use `execute_code` + - Sandbox snapshot/restore between calls + - Session event logging + - *(mirrors `copilot_sdk_tools.py`)* + +- [ ] **5.7** Create `AgentFrameworkExample` β€” `Microsoft.Agents.AI` v1.1.0 integration + - Agent with `execute_code` tool backed by sandbox + - Tool registration via sandbox + - Network allowlist + - *(mirrors `copilot_agent.py`)* + +All examples at `src/sdk/dotnet/core/Examples/{Name}/{Name}.csproj` + +--- + +## Phase 6: Tests πŸ§ͺ + +> **Status**: βœ… Complete (93 tests passing, includes 12 ownership transfer tests) +> **Depends on**: Phase 3 + +### Steps β€” ~93+ xUnit tests across 9 test classes + +All tests at `src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/` + +- [ ] **6.1** `CoreFunctionalityTests` (~15 tests) + - Basic run with stdout/stderr capture + - Exit code propagation (0 and non-zero) + - Multiple sequential runs + - Large code input (near MAX_CODE_SIZE) + - Code exceeding MAX_CODE_SIZE β†’ error + - Empty code execution + - Unicode in code and output + - Async RunAsync + +- [ ] **6.2** `ToolRegistrationTests` (~20 tests) + - Register sync tool, call from guest + - Register typed `Func`, auto-serialization + - Register multiple tools + - Tool returning various types (string, number, bool, object, array) + - Tool throwing exception β†’ guest receives error + - Register after first `Run()` β†’ error + - Tool schema validation (wrong arg types) + - Required vs optional args + - No-arg tools + - Tool with default values + +- [ ] **6.3** `FilesystemTests` (~12 tests) + - No filesystem (default) + - Input dir only + - Temp output only + - Input + temp output + - Persistent output dir + - Get output files after write + - OutputPath accessor + - Guest reads input file + - Guest writes output file + - Non-existent input dir β†’ error + +- [ ] **6.4** `NetworkTests` (~10 tests) + - No network (default) β†’ guest HTTP fails + - AllowDomain β†’ guest HTTP succeeds + - Method filter β†’ only allowed methods + - Multiple domains + - CONNECT/TRACE always blocked + - Invalid domain β†’ error + +- [ ] **6.5** `SnapshotRestoreTests` (~10 tests) + - Take snapshot, restore, clean state + - Snapshot reused multiple times + - Disposed snapshot β†’ error + - Snapshot on disposed sandbox β†’ error + - Null snapshot β†’ `ArgumentNullException` + - Async snapshot/restore + +- [ ] **6.6** `SandboxBuilderTests` (~8 tests) + - Default options + - Custom heap/stack sizes + - Chained configuration + - Builder reuse + - Invalid module path β†’ error + - Size parsing ("25Mi", "400Mi", invalid) + +- [ ] **6.7** `SandboxLifecycleTests` (~10 tests) + - Create and dispose + - Using pattern + - Dispose idempotency + - Use after dispose β†’ `ObjectDisposedException` + - Finalizer safety (abandoned sandbox) + - Thread-affinity violation β†’ exception + +- [ ] **6.8** `MemoryLeakTests` (~6 tests) + - Sandbox creation/disposal loop + - Run execution loop + - Tool dispatch loop + - Snapshot/restore loop + - Error handling loop + - Complex mixed operations + +- [ ] **6.9** `PackageTests` (separate project, ~2 tests) + - Install from local NuGet feed + - Simple execution via installed package + +--- + +## Phase 7: Build System πŸ”§ + +> **Status**: ⬜ Not Started +> **Depends on**: Phase 1 + Phase 2 (for building) + +### Steps + +- [ ] **7.1** Create `src/sdk/dotnet/Justfile` + ``` + build profile="debug": Build Rust FFI + dotnet solution + test profile="debug": Run xUnit tests + fmt-check: dotnet format --verify-no-changes + fmt-apply: dotnet format + analyze: dotnet build /p:TreatWarningsAsErrors=true /p:EnforceCodeStyleInBuild=true + examples: Run all example projects + dist: Build NuGet packages β†’ dist/dotnetsdk/ + package-test: Install + smoke test NuGet packages + ``` + +- [ ] **7.2** Update root `Justfile` + - Add `mod dotnet "src/sdk/dotnet/Justfile"` + - Wire into `build`, `test`, `fmt`, `fmt-check`, `lint` + +- [ ] **7.3** Update root `Cargo.toml` + - Add `src/sdk/dotnet/ffi` to workspace members + +- [ ] **7.4** Create `.editorconfig` for C# formatting rules + +--- + +## Phase 8: NuGet Packaging πŸ“¦ + +> **Status**: ⬜ Not Started +> **Depends on**: Phase 3 + +### Steps + +- [ ] **8.1** Create `Directory.Build.props` + - Shared: Version, Authors, Copyright, Apache-2.0, repo URL + +- [ ] **8.2** Configure NuGet metadata in each `.csproj` + - `Hyperlight.HyperlightSandbox.PInvoke` β€” P/Invoke + native libs + - `Hyperlight.HyperlightSandbox.Api` β€” high-level API + - `Hyperlight.HyperlightSandbox.Extensions.AI` β€” agent integration + +- [ ] **8.3** Native library bundling in PInvoke.csproj + - `runtimes/linux-x64/native/libhyperlight_sandbox_ffi.so` + - `runtimes/win-x64/native/hyperlight_sandbox_ffi.dll` + - MSBuild `.targets` file for consumers + +- [ ] **8.4** Create `nuget.config` for PackageTests + - Local dist folder + nuget.org sources + +--- + +## Phase 9: CI + Documentation πŸ“š + +> **Status**: ⬜ Not Started +> **Depends on**: Phase 7 + +### Steps + +- [ ] **9.1** Add `.NET 8.0 SDK` setup to CI workflow +- [ ] **9.2** Add `just dotnet fmt-check` to format validation +- [ ] **9.3** Add `just dotnet build` to build pipeline +- [ ] **9.4** Add `just dotnet test` to test pipeline +- [ ] **9.5** Add `just dotnet examples` to example runs +- [ ] **9.6** Create `src/sdk/dotnet/README.md` β€” architecture, build, API, contributing +- [ ] **9.7** Update root `README.md` β€” add .NET SDK section +- [ ] **9.8** Update `.github/copilot-instructions.md` β€” add dotnet commands + +--- + +## File Manifest + +### New files to create + +| Path | Description | +|------|-------------| +| `src/sdk/dotnet/ffi/Cargo.toml` | Rust FFI crate config | +| `src/sdk/dotnet/ffi/src/lib.rs` | FFI exports (~800-1000 LOC) | +| `src/sdk/dotnet/core/PInvoke/HyperlightSandbox.PInvoke.csproj` | P/Invoke project | +| `src/sdk/dotnet/core/PInvoke/AssemblyInfo.cs` | Runtime marshalling config | +| `src/sdk/dotnet/core/PInvoke/FFIResult.cs` | FFI result struct | +| `src/sdk/dotnet/core/PInvoke/FFIErrorCode.cs` | Error code enum | +| `src/sdk/dotnet/core/PInvoke/SafeHandles.cs` | SafeHandle wrappers | +| `src/sdk/dotnet/core/PInvoke/SafeNativeMethods.cs` | P/Invoke declarations | +| `src/sdk/dotnet/core/PInvoke/SandboxOptions.cs` | Options struct | +| `src/sdk/dotnet/core/PInvoke/ToolCallbackDelegate.cs` | Callback delegate | +| `src/sdk/dotnet/core/PInvoke/build/net8.0/*.targets` | MSBuild targets | +| `src/sdk/dotnet/core/Api/HyperlightSandbox.Api.csproj` | High-level API project | +| `src/sdk/dotnet/core/Api/ExecutionResult.cs` | Result record | +| `src/sdk/dotnet/core/Api/SandboxBuilder.cs` | Fluent builder | +| `src/sdk/dotnet/core/Api/Sandbox.cs` | Main API class | +| `src/sdk/dotnet/core/Api/SandboxSnapshot.cs` | Snapshot wrapper | +| `src/sdk/dotnet/core/Api/ToolSchemaBuilder.cs` | Schema generator | +| `src/sdk/dotnet/core/Api/SizeParser.cs` | Size string parser | +| `src/sdk/dotnet/core/Api/Exceptions.cs` | Exception hierarchy | +| `src/sdk/dotnet/core/Extensions.AI/HyperlightSandbox.Extensions.AI.csproj` | AI extensions | +| `src/sdk/dotnet/core/Extensions.AI/CodeExecutionTool.cs` | Agent tool wrapper | +| `src/sdk/dotnet/core/Extensions.AI/SandboxToolFactory.cs` | AIFunction helpers | +| `src/sdk/dotnet/core/Examples/BasicExample/` | Basic usage sample | +| `src/sdk/dotnet/core/Examples/ToolRegistrationExample/` | Tool registration sample | +| `src/sdk/dotnet/core/Examples/FilesystemExample/` | Filesystem sample | +| `src/sdk/dotnet/core/Examples/NetworkExample/` | Network sample | +| `src/sdk/dotnet/core/Examples/SnapshotExample/` | Snapshot sample | +| `src/sdk/dotnet/core/Examples/CopilotSdkExample/` | Copilot SDK sample | +| `src/sdk/dotnet/core/Examples/AgentFrameworkExample/` | MAF sample | +| `src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/` | Main test project | +| `src/sdk/dotnet/core/Tests/HyperlightSandbox.PackageTests/` | NuGet package tests | +| `src/sdk/dotnet/core/HyperlightSandbox.sln` | Solution file | +| `src/sdk/dotnet/core/.editorconfig` | C# formatting rules | +| `src/sdk/dotnet/Directory.Build.props` | Shared NuGet metadata | +| `src/sdk/dotnet/Justfile` | Build recipes | +| `src/sdk/dotnet/README.md` | Documentation | + +### Existing files to modify + +| Path | Change | +|------|--------| +| `Cargo.toml` | Add `src/sdk/dotnet/ffi` to workspace members | +| `Justfile` | Add dotnet module, wire into build/test/fmt/lint | +| `.github/copilot-instructions.md` | Add dotnet build/test commands | +| `README.md` | Add .NET SDK section | + +--- + +## Verification Checklist + +Before declaring done: + +- [ ] `just fmt` passes (all Rust + .NET formatting clean) +- [ ] `just build` compiles Rust FFI crate + .NET solution +- [ ] `just dotnet test` β€” 93+ xUnit tests pass +- [ ] `just dotnet examples` β€” all 7 examples run successfully +- [ ] `just dotnet fmt-check` β€” no formatting violations +- [ ] `just dotnet analyze` β€” Roslyn analyzers clean (warnings as errors) +- [ ] `just dotnet package-test` β€” NuGet packages install and work +- [ ] Manual: example outputs are correct +- [ ] No `expect`/`unwrap` in production Rust code +- [ ] No `unsafe` in public C# API surface +- [ ] All SafeHandles properly freed +- [ ] GC.KeepAlive barriers on all FFI call sites +- [ ] Tool callback delegates properly pinned + +--- + +## Architecture Diagram + +``` +β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β” +β”‚ .NET Application β”‚ +β”‚ β”‚ +β”‚ β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β” β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”β”‚ +β”‚ β”‚ HyperlightSandboxβ”‚ β”‚ HyperlightSandbox β”‚β”‚ +β”‚ β”‚ .Api β”‚ β”‚ .Extensions.AI β”‚β”‚ +β”‚ β”‚ β”‚ β”‚ β”‚β”‚ +β”‚ β”‚ Sandbox β”‚ β”‚ CodeExecutionTool β”‚β”‚ +β”‚ β”‚ SandboxBuilder β”‚ β”‚ SandboxToolFactory β”‚β”‚ +β”‚ β”‚ ExecutionResult β”‚ β”‚ β†’ AIFunction β”‚β”‚ +β”‚ β”‚ SandboxSnapshot β”‚ β”‚ β”‚β”‚ +β”‚ β””β”€β”€β”€β”€β”€β”€β”€β”€β”¬β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜ β””β”€β”€β”€β”€β”€β”€β”€β”€β”¬β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜β”‚ +β”‚ β”‚ β”‚ β”‚ +β”‚ β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β–Όβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β–Όβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”β”‚ +β”‚ β”‚ HyperlightSandbox.PInvoke β”‚β”‚ +β”‚ β”‚ β”‚β”‚ +β”‚ β”‚ SafeNativeMethods SafeHandles FFIResult β”‚β”‚ +β”‚ β”‚ [LibraryImport] GCHandle ThrowIfError() β”‚β”‚ +β”‚ β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”¬β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜β”‚ +β”‚ β”‚ P/Invoke β”‚ +β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”Όβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜ + β”‚ + β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β–Όβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β” + β”‚ hyperlight_sandbox_ffi (cdylib) β”‚ + β”‚ β”‚ + β”‚ FFI exports (extern "C") β”‚ + β”‚ Box::into_raw / from_raw β”‚ + β”‚ CString / JSON marshalling β”‚ + β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”¬β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜ + β”‚ + β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β–Όβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β” + β”‚ hyperlight-sandbox (core) β”‚ + β”‚ + hyperlight-wasm-sandbox β”‚ + β”‚ β”‚ + β”‚ Sandbox β”‚ + β”‚ ToolRegistry / CapFs / Network β”‚ + β”‚ Snapshot / Restore β”‚ + β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜ +``` + +--- + +## Changelog + +| Date | Change | +|------|--------| +| 2026-04-13 | Initial plan created from PR #292 review + Python SDK analysis | +| 2026-04-13 | Phase 1 complete: FFI crate with 68 tests, clean compile, formatted | +| 2026-04-13 | Phase 2 complete: P/Invoke layer - 7 source files, auto-builds Rust, zero warnings | +| 2026-04-13 | Phase 3 complete: API layer - Sandbox, SandboxBuilder, tool registration, exceptions, snapshots | +| 2026-04-13 | Phase 6 complete: 93 xUnit tests - ownership transfers, GC stress, memory leaks, lifecycle | +| 2026-04-13 | Phase 4 complete: Extensions.AI - CodeExecutionTool with AIFunction adapter | +| 2026-04-13 | Phase 5 complete: 7 examples including Copilot SDK and MAF integration | diff --git a/examples/agent-framework/DotnetAgent.cs b/examples/agent-framework/DotnetAgent.cs new file mode 100644 index 0000000..dcdf92a --- /dev/null +++ b/examples/agent-framework/DotnetAgent.cs @@ -0,0 +1,148 @@ +// .NET Agent example β€” hyperlight sandbox as an IChatClient tool. +// +// Mirrors: examples/agent-framework/copilot_agent.py +// +// Uses GitHub Models (OpenAI-compatible) as the LLM provider with +// IChatClient + FunctionInvocation for automatic tool calling. +// +// Usage: +// GITHUB_TOKEN=ghp_... dotnet run --project examples/agent-framework/DotnetAgent.csproj +// +// Prerequisites: +// just wasm guest-build # build the Python guest module +// just dotnet build # build the .NET SDK +// GITHUB_TOKEN env var # GitHub PAT with Models access + +using System.Text.Json.Serialization; +using HyperlightSandbox.Api; +using HyperlightSandbox.Extensions.AI; +using Microsoft.Extensions.AI; +using OpenAI; + +// --- Check for GitHub token --- +var githubToken = Environment.GetEnvironmentVariable("GITHUB_TOKEN") + ?? Environment.GetEnvironmentVariable("COPILOT_GITHUB_TOKEN"); +if (string.IsNullOrEmpty(githubToken)) +{ + Console.WriteLine("❌ Set GITHUB_TOKEN or COPILOT_GITHUB_TOKEN environment variable."); + return 1; +} + +// --- Find the guest module --- +var guestPath = FindGuest(); +if (guestPath == null) +{ + Console.WriteLine("❌ Guest module not found. Run 'just wasm guest-build' first."); + return 1; +} + +Console.WriteLine("=== Hyperlight Sandbox .NET β€” Agent Example (IChatClient + FunctionInvocation) ===\n"); + +// --- Set up the sandbox code execution tool --- +using var codeTool = new CodeExecutionTool( + new SandboxBuilder() + .WithModulePath(guestPath) + .WithTempOutput()); + +codeTool.RegisterTool("compute", + args => args.Operation switch + { + "add" => args.A + args.B, + "multiply" => args.A * args.B, + "subtract" => args.A - args.B, + "divide" when args.B != 0 => args.A / args.B, + _ => throw new ArgumentException($"Unknown operation: {args.Operation}"), + }); + +// Async tool β€” simulates fetching from an external service. +codeTool.RegisterToolAsync("fetch_data", + async args => + { + // In real system this would be an actual HTTP/DB call. + await Task.Delay(1).ConfigureAwait(false); + return args.Source switch + { + "weather" => """{"temperature": 22, "condition": "sunny"}""", + "stock" => """{"symbol": "MSFT", "price": 425.50}""", + _ => """{"error": "unknown source"}""", + }; + }); + +// --- Create IChatClient with function invocation --- +// GitHub Models provides an OpenAI-compatible endpoint. +var openAiClient = new OpenAIClient( + new System.ClientModel.ApiKeyCredential(githubToken), + new OpenAIClientOptions { Endpoint = new Uri("https://models.inference.ai.azure.com") }); + +IChatClient chatClient = new ChatClientBuilder( + openAiClient.GetChatClient("gpt-4o").AsIChatClient()) + .UseFunctionInvocation() // Automatically calls our tools when the model requests them + .Build(); + +var chatOptions = new ChatOptions +{ + Tools = [codeTool.AsAIFunction()], +}; + +// --- System prompt (same approach as Python version) --- +var messages = new List +{ + new(ChatRole.System, """ + You have one tool: execute_code. It runs Python in an isolated sandbox. + The sandbox has these built-in functions (no import needed): + - call_tool("compute", a=, b=, operation="add"|"multiply"|"subtract"|"divide") + - call_tool("fetch_data", source="weather"|"stock") + Always use execute_code to perform computations. Never hardcode results. + """), +}; + +// --- Run prompts through the agent --- +var prompts = new[] +{ + "Use execute_code to compute 42 * 17 using call_tool('compute', a=42, b=17, operation='multiply') and print the result.", + "Use execute_code to fetch weather data using call_tool('fetch_data', source='weather') and print it nicely.", +}; + +foreach (var prompt in prompts) +{ + Console.WriteLine($"πŸ“€ User: {prompt}\n"); + messages.Add(new(ChatRole.User, prompt)); + + var response = await chatClient.GetResponseAsync(messages, chatOptions).ConfigureAwait(false); + + Console.WriteLine($"πŸ€– Agent: {response.Messages.Last().Text}\n"); + messages.AddMessages(response); + Console.WriteLine(new string('─', 60) + "\n"); +} + +Console.WriteLine("βœ… Agent example finished!"); +return 0; + +// --- Helpers --- +static string? FindGuest() +{ + var dir = AppContext.BaseDirectory; + while (dir != null) + { + if (File.Exists(Path.Combine(dir, "Cargo.toml")) + && Directory.Exists(Path.Combine(dir, "src", "wasm_sandbox"))) + { + var p = Path.Combine(dir, "src", "wasm_sandbox", "guests", "python", "python-sandbox.aot"); + return File.Exists(p) ? Path.GetFullPath(p) : null; + } + dir = Path.GetDirectoryName(dir); + } + return null; +} + +internal sealed class ComputeArgs +{ + [JsonPropertyName("a")] public double A { get; set; } + [JsonPropertyName("b")] public double B { get; set; } + [JsonPropertyName("operation")] public string Operation { get; set; } = "add"; +} + +internal sealed class FetchDataArgs +{ + [JsonPropertyName("source")] public string Source { get; set; } = ""; +} diff --git a/examples/agent-framework/DotnetAgent.csproj b/examples/agent-framework/DotnetAgent.csproj new file mode 100644 index 0000000..c260936 --- /dev/null +++ b/examples/agent-framework/DotnetAgent.csproj @@ -0,0 +1,15 @@ + + + Exe + net8.0 + enable + enable + + + + + + + + + diff --git a/examples/copilot-sdk/DotnetCopilotSdk.cs b/examples/copilot-sdk/DotnetCopilotSdk.cs new file mode 100644 index 0000000..d5e60be --- /dev/null +++ b/examples/copilot-sdk/DotnetCopilotSdk.cs @@ -0,0 +1,155 @@ +// .NET Copilot SDK example β€” hyperlight sandbox as a Copilot tool. +// +// Mirrors: examples/copilot-sdk/copilot_sdk_tools.py +// +// Usage: +// dotnet run --project examples/copilot-sdk/DotnetCopilotSdk.csproj +// +// Prerequisites: +// just wasm guest-build # build the Python guest module +// just dotnet build # build the .NET SDK +// GitHub Copilot CLI installed and authenticated + +using System.ComponentModel; +using System.Text.Json.Serialization; +using GitHub.Copilot.SDK; +using HyperlightSandbox.Api; +using HyperlightSandbox.Extensions.AI; +using Microsoft.Extensions.AI; + +// --- Find the guest module --- +var guestPath = FindGuest(); +if (guestPath == null) +{ + Console.WriteLine("❌ Guest module not found. Run 'just wasm guest-build' first."); + return 1; +} + +Console.WriteLine("=== Hyperlight Sandbox .NET β€” Copilot SDK Example ===\n"); +Console.WriteLine($"Guest: {guestPath}\n"); + +// --- Set up the sandbox --- +using var codeTool = new CodeExecutionTool( + new SandboxBuilder() + .WithModulePath(guestPath) + .WithTempOutput()); + +codeTool.RegisterTool("compute", + args => args.Operation switch + { + "add" => args.A + args.B, + "multiply" => args.A * args.B, + "subtract" => args.A - args.B, + _ => throw new ArgumentException($"Unknown op: {args.Operation}"), + }); + +// Async tool β€” simulates fetching from an external service. +codeTool.RegisterToolAsync("fetch_data", + async args => + { + // In real system this would be an actual HTTP/DB call. + await Task.Delay(1).ConfigureAwait(false); + return args.Source switch + { + "weather" => """{"temperature": 22, "condition": "sunny"}""", + "stock" => """{"symbol": "MSFT", "price": 425.50}""", + _ => """{"error": "unknown source"}""", + }; + }); + +codeTool.AllowDomain("https://httpbin.org", ["GET"]); + +// --- Connect to Copilot --- +Console.WriteLine("Connecting to GitHub Copilot CLI...\n"); + +await using var client = new CopilotClient(); +await client.StartAsync().ConfigureAwait(false); + +await using var session = await client.CreateSessionAsync(new SessionConfig +{ + Model = "claude-sonnet-4.5", + OnPermissionRequest = PermissionHandler.ApproveAll, + Tools = + [ + codeTool.AsAIFunction(), + AIFunctionFactory.Create( + ([Description("Math expression")] string expr) => $"Computed: {expr}", + "direct_compute", + "Evaluate a math expression directly"), + ], + SystemMessage = new SystemMessageConfig + { + Mode = SystemMessageMode.Append, + Content = """ + You have access to an execute_code tool that runs Python code in a + secure sandbox. Available guest functions: + - call_tool("compute", a=, b=, operation=) + - call_tool("fetch_data", source=) + - http_get(url) (httpbin.org allowed) + Always use execute_code for computation. + """, + }, +}).ConfigureAwait(false); + +// --- Send a prompt --- +var done = new TaskCompletionSource(); + +session.On(evt => +{ + switch (evt) + { + case AssistantMessageEvent msg: + Console.WriteLine($"\nπŸ€– {msg.Data.Content}\n"); + break; + case ToolExecutionStartEvent toolStart: + Console.WriteLine($" πŸ”§ Tool: {toolStart.Data.ToolName}"); + break; + case SessionIdleEvent: + done.TrySetResult(); + break; + case SessionErrorEvent err: + Console.WriteLine($" ❌ Error: {err.Data.Message}"); + done.TrySetResult(); + break; + } +}); + +Console.WriteLine("πŸ“€ Sending prompt...\n"); +await session.SendAsync(new MessageOptions +{ + Prompt = "Use execute_code to compute 42 * 17 using call_tool('compute', a=42, b=17, operation='multiply') and print the result.", +}).ConfigureAwait(false); + +await done.Task.ConfigureAwait(false); + +Console.WriteLine("βœ… Copilot SDK example finished!"); +return 0; + +// --- Helpers --- +static string? FindGuest() +{ + var dir = AppContext.BaseDirectory; + while (dir != null) + { + if (File.Exists(Path.Combine(dir, "Cargo.toml")) + && Directory.Exists(Path.Combine(dir, "src", "wasm_sandbox"))) + { + var p = Path.Combine(dir, "src", "wasm_sandbox", "guests", "python", "python-sandbox.aot"); + return File.Exists(p) ? Path.GetFullPath(p) : null; + } + dir = Path.GetDirectoryName(dir); + } + return null; +} + +internal sealed class ComputeArgs +{ + [JsonPropertyName("a")] public double A { get; set; } + [JsonPropertyName("b")] public double B { get; set; } + [JsonPropertyName("operation")] public string Operation { get; set; } = "add"; +} + +internal sealed class FetchDataArgs +{ + [JsonPropertyName("source")] public string Source { get; set; } = ""; +} diff --git a/examples/copilot-sdk/DotnetCopilotSdk.csproj b/examples/copilot-sdk/DotnetCopilotSdk.csproj new file mode 100644 index 0000000..7f8f168 --- /dev/null +++ b/examples/copilot-sdk/DotnetCopilotSdk.csproj @@ -0,0 +1,15 @@ + + + Exe + net8.0 + enable + enable + $(NoWarn);CS9057 + + + + + + + + diff --git a/src/nanvix_sandbox/Cargo.lock b/src/nanvix_sandbox/Cargo.lock index b5ffd0a..517aa6e 100644 --- a/src/nanvix_sandbox/Cargo.lock +++ b/src/nanvix_sandbox/Cargo.lock @@ -1306,7 +1306,7 @@ dependencies = [ [[package]] name = "hyperlight-nanvix-sandbox" -version = "0.2.0" +version = "0.3.0" dependencies = [ "anyhow", "hyperlight-nanvix", @@ -1317,7 +1317,7 @@ dependencies = [ [[package]] name = "hyperlight-sandbox" -version = "0.2.0" +version = "0.3.0" dependencies = [ "anyhow", "bitflags 2.11.0", diff --git a/src/sdk/dotnet/.editorconfig b/src/sdk/dotnet/.editorconfig new file mode 100644 index 0000000..cc54634 --- /dev/null +++ b/src/sdk/dotnet/.editorconfig @@ -0,0 +1,29 @@ +# EditorConfig for .NET projects +root = true + +[*.cs] +indent_style = space +indent_size = 4 +end_of_line = lf +charset = utf-8 +trim_trailing_whitespace = true +insert_final_newline = true + +# Remove unnecessary usings (enforced via dotnet format, not build) +dotnet_diagnostic.IDE0005.severity = suggestion + +# String comparison β€” we handle this explicitly in code, suppress the +# auto-fix noise since dotnet format can't resolve it automatically. +dotnet_diagnostic.CA1307.severity = none + +# Naming conventions +dotnet_naming_rule.interface_should_start_with_i.severity = suggestion +dotnet_naming_rule.interface_should_start_with_i.symbols = interface +dotnet_naming_rule.interface_should_start_with_i.style = begins_with_i +dotnet_naming_symbols.interface.applicable_kinds = interface +dotnet_naming_style.begins_with_i.required_prefix = I + +# Test files - allow underscores in method names +[**Tests.cs] +dotnet_diagnostic.CA1707.severity = none +dotnet_diagnostic.IDE1006.severity = none \ No newline at end of file diff --git a/src/sdk/dotnet/.gitattributes b/src/sdk/dotnet/.gitattributes new file mode 100644 index 0000000..d36efe6 --- /dev/null +++ b/src/sdk/dotnet/.gitattributes @@ -0,0 +1,4 @@ +# Force LF line endings for C# files so dotnet format passes on all platforms. +*.cs text eol=lf +*.csproj text eol=lf +*.sln text eol=lf diff --git a/src/sdk/dotnet/Directory.Build.props b/src/sdk/dotnet/Directory.Build.props new file mode 100644 index 0000000..327cc7c --- /dev/null +++ b/src/sdk/dotnet/Directory.Build.props @@ -0,0 +1,12 @@ + + + 0.3.0 + Hyperlight developers + hyperlight-dev + Copyright Β© Microsoft 2026 + Apache-2.0 + https://github.com/hyperlight-dev/hyperlight-sandbox + https://github.com/hyperlight-dev/hyperlight-sandbox + git + + diff --git a/src/sdk/dotnet/Justfile b/src/sdk/dotnet/Justfile new file mode 100644 index 0000000..0494939 --- /dev/null +++ b/src/sdk/dotnet/Justfile @@ -0,0 +1,160 @@ +# .NET SDK build recipes for hyperlight-sandbox. +# +# These recipes build the Rust FFI crate, the .NET solution, and run +# tests/examples. The WIT_WORLD env var is required for the Rust build +# so that hyperlight-component-macro generates bindings that match the +# guest component model ABI. + +set unstable := true +set windows-shell := ["pwsh", "-NoLogo", "-Command"] + +repo-root := invocation_directory_native() +export WIT_WORLD := repo-root + "/src/wasm_sandbox/wit/sandbox-world.wasm" + +default-target := "debug" +rmrf := if os() == "windows" { "Remove-Item -Recurse -Force -ErrorAction SilentlyContinue" } else { "rm -rf" } +mkdirp := if os() == "windows" { "New-Item -ItemType Directory -Force -Path" } else { "mkdir -p" } +devnull := if os() == "windows" { "$null" } else { "/dev/null" } + +#### BUILD #### + +# Build everything (Rust FFI + .NET solution) +build target=default-target: (build-rust target) (build-dotnet target) + +# Build only the Rust FFI crate +build-rust target=default-target: + cargo build --manifest-path {{repo-root}}/src/sdk/dotnet/ffi/Cargo.toml {{ if target == "release" { "--release" } else { "" } }} + +# Build only the .NET solution +build-dotnet target=default-target: + dotnet build {{repo-root}}/src/sdk/dotnet/core/HyperlightSandbox.sln --configuration {{ if target == "release" { "Release" } else { "Debug" } }} + +#### FORMAT #### + +# Apply all formatting (Rust + .NET) +fmt: fmt-rust fmt-dotnet + +# Apply Rust formatting +fmt-rust: + cargo +nightly fmt --manifest-path {{repo-root}}/src/sdk/dotnet/ffi/Cargo.toml + +# Apply .NET formatting (whitespace + remove unused usings) +fmt-dotnet: + dotnet format {{repo-root}}/src/sdk/dotnet/core/HyperlightSandbox.sln + dotnet format analyzers {{repo-root}}/src/sdk/dotnet/core/HyperlightSandbox.sln --diagnostics IDE0005 --severity warn + +# Check all formatting (Rust + .NET) +fmt-check: fmt-check-rust fmt-check-dotnet + +# Check Rust formatting +fmt-check-rust: + cargo +nightly fmt --manifest-path {{repo-root}}/src/sdk/dotnet/ffi/Cargo.toml -- --check + +# Check .NET formatting +fmt-check-dotnet: + dotnet format {{repo-root}}/src/sdk/dotnet/core/HyperlightSandbox.sln --verify-no-changes + +#### LINT #### + +# Lint everything (Rust clippy + .NET analyzers) +lint target=default-target: (lint-rust target) (analyze target) + +# Rust clippy +lint-rust target=default-target: + cargo clippy --manifest-path {{repo-root}}/src/sdk/dotnet/ffi/Cargo.toml --profile={{ if target == "debug" { "dev" } else { target } }} -- -D warnings + +# .NET Roslyn analyzers with warnings as errors +analyze target=default-target: + dotnet build {{repo-root}}/src/sdk/dotnet/core/HyperlightSandbox.sln /p:TreatWarningsAsErrors=true /p:EnforceCodeStyleInBuild=true --configuration {{ if target == "release" { "Release" } else { "Debug" } }} + +#### TEST #### + +# Run all tests (Rust + .NET) +test target=default-target: test-rust (test-dotnet target) + +# Run Rust FFI tests +test-rust: + cargo test --manifest-path {{repo-root}}/src/sdk/dotnet/ffi/Cargo.toml + +# Run .NET xUnit tests +test-dotnet target=default-target: (build target) + dotnet test {{repo-root}}/src/sdk/dotnet/core/HyperlightSandbox.sln --configuration {{ if target == "release" { "Release" } else { "Debug" } }} --no-build + +#### EXAMPLES #### + +# Run the core examples (requires guest module: just wasm guest-build) +examples: + dotnet run --project {{repo-root}}/src/sdk/dotnet/core/Examples/BasicExample/BasicExample.csproj + dotnet run --project {{repo-root}}/src/sdk/dotnet/core/Examples/ToolRegistrationExample/ToolRegistrationExample.csproj + dotnet run --project {{repo-root}}/src/sdk/dotnet/core/Examples/SnapshotExample/SnapshotExample.csproj + +# Run the top-level agent example (requires GITHUB_TOKEN) +agent-framework-example: + dotnet run --project {{repo-root}}/examples/agent-framework/DotnetAgent.csproj + +# Run the top-level Copilot SDK example (requires Copilot CLI auth) +copilot-sdk-example: + dotnet run --project {{repo-root}}/examples/copilot-sdk/DotnetCopilotSdk.csproj + +#### DIST / PUBLISH #### + +# Build NuGet packages +dist target="release": (build target) + {{mkdirp}} {{repo-root}}/dist/dotnetsdk + dotnet pack {{repo-root}}/src/sdk/dotnet/core/PInvoke/HyperlightSandbox.PInvoke.csproj --configuration {{ if target == "release" { "Release" } else { "Debug" } }} --no-build --output {{repo-root}}/dist/dotnetsdk + dotnet pack {{repo-root}}/src/sdk/dotnet/core/Api/HyperlightSandbox.Api.csproj --configuration {{ if target == "release" { "Release" } else { "Debug" } }} --no-build --output {{repo-root}}/dist/dotnetsdk + dotnet pack {{repo-root}}/src/sdk/dotnet/core/Extensions.AI/HyperlightSandbox.Extensions.AI.csproj --configuration {{ if target == "release" { "Release" } else { "Debug" } }} --no-build --output {{repo-root}}/dist/dotnetsdk + @echo "βœ… NuGet packages created in dist/dotnetsdk/" + +# Publish NuGet packages to nuget.org (requires NUGET_API_KEY env var) +[unix] +publish feed="nuget": (dist "release") + #!/usr/bin/env bash + set -euo pipefail + if [ "{{feed}}" = "nuget" ]; then + SOURCE="https://api.nuget.org/v3/index.json" + elif [ "{{feed}}" = "test" ]; then + SOURCE="https://apiint.nugettest.org/v3/index.json" + else + SOURCE="{{feed}}" + fi + if [ -z "${NUGET_API_KEY:-}" ]; then + echo "❌ NUGET_API_KEY environment variable is required" + exit 1 + fi + for pkg in {{repo-root}}/dist/dotnetsdk/*.nupkg; do + echo "Publishing $(basename $pkg) to $SOURCE..." + dotnet nuget push "$pkg" --source "$SOURCE" --api-key "$NUGET_API_KEY" --skip-duplicate + done + echo "βœ… All packages published!" + +[windows] +publish feed="nuget": (dist "release") + $source = if ("{{feed}}" -eq "nuget") { "https://api.nuget.org/v3/index.json" } elseif ("{{feed}}" -eq "test") { "https://apiint.nugettest.org/v3/index.json" } else { "{{feed}}" }; \ + if (-not $env:NUGET_API_KEY) { Write-Error "❌ NUGET_API_KEY environment variable is required"; exit 1 }; \ + Get-ChildItem "{{repo-root}}/dist/dotnetsdk/*.nupkg" | ForEach-Object { \ + Write-Host "Publishing $($_.Name) to $source..."; \ + dotnet nuget push $_.FullName --source $source --api-key $env:NUGET_API_KEY --skip-duplicate \ + }; \ + Write-Host "βœ… All packages published!" + +# Test that NuGet packages can be installed and used +package-test target="debug": (dist target) + @echo "Testing NuGet package installation..." + dotnet restore {{repo-root}}/src/sdk/dotnet/core/Tests/HyperlightSandbox.PackageTests/HyperlightSandbox.PackageTests.csproj --force + dotnet build {{repo-root}}/src/sdk/dotnet/core/Tests/HyperlightSandbox.PackageTests/HyperlightSandbox.PackageTests.csproj --configuration {{ if target == "release" { "Release" } else { "Debug" } }} --no-restore + dotnet test {{repo-root}}/src/sdk/dotnet/core/Tests/HyperlightSandbox.PackageTests/HyperlightSandbox.PackageTests.csproj --configuration {{ if target == "release" { "Release" } else { "Debug" } }} --no-build + @echo "βœ… NuGet package installation tests passed!" + +#### CLEAN #### + +# Clean all .NET build artifacts +clean: + -dotnet clean {{repo-root}}/src/sdk/dotnet/core/HyperlightSandbox.sln 2>{{devnull}} + -{{rmrf}} {{repo-root}}/src/sdk/dotnet/core/PInvoke/bin + -{{rmrf}} {{repo-root}}/src/sdk/dotnet/core/PInvoke/obj + -{{rmrf}} {{repo-root}}/src/sdk/dotnet/core/Api/bin + -{{rmrf}} {{repo-root}}/src/sdk/dotnet/core/Api/obj + -{{rmrf}} {{repo-root}}/src/sdk/dotnet/core/Extensions.AI/bin + -{{rmrf}} {{repo-root}}/src/sdk/dotnet/core/Extensions.AI/obj + -{{rmrf}} {{repo-root}}/dist/dotnetsdk diff --git a/src/sdk/dotnet/README.md b/src/sdk/dotnet/README.md new file mode 100644 index 0000000..9866c31 --- /dev/null +++ b/src/sdk/dotnet/README.md @@ -0,0 +1,313 @@ +# .NET SDK for hyperlight-sandbox + +A .NET 8.0 SDK for running code in secure, sandboxed environments using [hyperlight](https://github.com/hyperlight-dev/hyperlight-sandbox). Execute Python, JavaScript, or custom guest code inside lightweight micro-VMs with tool dispatch, filesystem isolation, network allowlists, and snapshot/restore. + +## Features + +- **Secure code execution** β€” run untrusted code in an isolated sandbox +- **Tool dispatch** β€” register .NET functions callable from guest code via `call_tool()` +- **Typed tool registration** β€” auto-serialize/deserialize with `Func` +- **Two backends** β€” Wasm (Python/JS guests) and built-in JavaScript (QuickJS) +- **Snapshot/restore** β€” checkpoint and rewind sandbox state (200x faster warm starts) +- **Filesystem isolation** β€” read-only input dirs, writable output dirs, temp output +- **Network allowlists** β€” per-domain HTTP access control with method filtering +- **AI agent integration** β€” `CodeExecutionTool` with `AIFunction` for Copilot SDK and Microsoft Agent Framework +- **Thread-safe** β€” `lock`-based serialization allows safe cross-thread moves + +## Quick Start + +```bash +# Prerequisites +just wasm guest-build # Build the Python guest module +just dotnet build # Build the .NET SDK + Rust FFI +``` + +### Basic Usage + +```csharp +using HyperlightSandbox.Api; + +// Create a sandbox with the Python guest +using var sandbox = new SandboxBuilder() + .WithModulePath("path/to/python-sandbox.aot") + .Build(); + +// Execute code +var result = sandbox.Run(""" + import math + primes = [n for n in range(2, 50) + if all(n % i != 0 for i in range(2, int(math.sqrt(n)) + 1))] + print(f"Primes: {primes}") + """); + +Console.WriteLine(result.Stdout); // Primes: [2, 3, 5, 7, 11, ...] +Console.WriteLine(result.Success); // True +``` + +### Tool Registration + +Register .NET functions that guest code can call: + +```csharp +using var sandbox = new SandboxBuilder() + .WithModulePath("python-sandbox.aot") + .Build(); + +// Typed tool β€” auto-serializes args and result +sandbox.RegisterTool("add", + args => args.A + args.B); + +// Raw JSON tool +sandbox.RegisterTool("lookup", (string json) => + json.Contains("weather") + ? """{"temp": 22, "condition": "sunny"}""" + : """{"error": "unknown"}"""); + +var result = sandbox.Run(""" + sum = call_tool("add", a=10, b=32) + print(f"10 + 32 = {sum}") + + weather = call_tool("lookup", key="weather") + print(f"Weather: {weather}") + """); + +// DTO for typed tools +record MathArgs(double a, double b); +``` + +### JavaScript Backend + +Use the built-in QuickJS runtime β€” no guest module needed: + +```csharp +using var sandbox = new SandboxBuilder() + .WithBackend(SandboxBackend.JavaScript) + .Build(); + +var result = sandbox.Run("console.log('Hello from JS!');"); +``` + +### Snapshot/Restore + +Checkpoint sandbox state for fast resets between executions: + +```csharp +using var sandbox = new SandboxBuilder() + .WithModulePath("python-sandbox.aot") + .Build(); + +// Cold start (~2.5s) +sandbox.Run("pass"); + +// Take snapshot of clean state +using var snapshot = sandbox.Snapshot(); + +// Execute code (modifies state) +sandbox.Run("x = 42"); + +// Restore to clean state (~2ms β€” 1000x faster than cold start) +sandbox.Restore(snapshot); +sandbox.Run("print(x)"); // NameError: x is not defined +``` + +### Filesystem Access + +```csharp +using var sandbox = new SandboxBuilder() + .WithModulePath("python-sandbox.aot") + .WithInputDir("/path/to/input") // Read-only /input in guest + .WithTempOutput() // Writable /output in guest + .Build(); + +sandbox.Run(""" + with open("/input/data.txt") as f: + data = f.read() + with open("/output/result.txt", "w") as f: + f.write(data.upper()) + """); + +var files = sandbox.GetOutputFiles(); // ["result.txt"] +var path = sandbox.OutputPath; // /tmp/hyperlight-xxx/ +``` + +### Network Allowlist + +```csharp +sandbox.AllowDomain("https://httpbin.org"); // All methods +sandbox.AllowDomain("https://api.example.com", ["GET", "POST"]); // Filtered + +sandbox.Run(""" + response = http_get("https://httpbin.org/get") + print(f"Status: {response['status']}") + """); +``` + +### AI Agent Integration + +Use with GitHub Copilot SDK or Microsoft Agent Framework: + +```csharp +using HyperlightSandbox.Api; +using HyperlightSandbox.Extensions.AI; + +// Create a code execution tool with snapshot/restore for clean state +using var codeTool = new CodeExecutionTool( + new SandboxBuilder() + .WithModulePath("python-sandbox.aot") + .WithTempOutput()); + +codeTool.RegisterTool("compute", + args => args.A + args.B); + +// Get as AIFunction for agent registration +var executeCode = codeTool.AsAIFunction(); + +// Use with Copilot SDK +var session = await client.CreateSessionAsync(new SessionConfig +{ + Tools = [executeCode], +}); + +// Use with Microsoft Agent Framework / IChatClient +var response = await chatClient.GetResponseAsync(prompt, + new ChatOptions { Tools = [executeCode] }); +``` + +## Architecture + +``` +β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β” +β”‚ .NET Application β”‚ +β”‚ β”‚ +β”‚ β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β” β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β” β”‚ +β”‚ β”‚ HyperlightSandbox β”‚ β”‚ HyperlightSandbox β”‚ β”‚ +β”‚ β”‚ .Api β”‚ β”‚ .Extensions.AI β”‚ β”‚ +β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ +β”‚ β”‚ Sandbox β”‚ β”‚ CodeExecutionTool β”‚ β”‚ +β”‚ β”‚ SandboxBuilder β”‚ β”‚ β†’ AIFunction β”‚ β”‚ +β”‚ β”‚ ExecutionResult β”‚ β”‚ β”‚ β”‚ +β”‚ β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”¬β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜ β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”¬β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜ β”‚ +β”‚ β”‚ β”‚ β”‚ +β”‚ β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β–Όβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β–Όβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β” β”‚ +β”‚ β”‚ HyperlightSandbox.PInvoke β”‚ β”‚ +β”‚ β”‚ SafeNativeMethods Β· SafeHandles Β· FFIResult β”‚ β”‚ +β”‚ β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”¬β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜ β”‚ +β”‚ β”‚ P/Invoke β”‚ +β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”Όβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜ + β”‚ + β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β–Όβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β” + β”‚ hyperlight_sandbox_ffi (cdylib) β”‚ + β”‚ Rust FFI Β· Box::into_raw/from_raw β”‚ + β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”¬β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜ + β”‚ + β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β–Όβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β” + β”‚ hyperlight-sandbox (Rust core) β”‚ + β”‚ + hyperlight-wasm-sandbox β”‚ + β”‚ + hyperlight-javascript-sandbox β”‚ + β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜ +``` + +## Build Commands + +```bash +just dotnet build # Build Rust FFI + .NET solution +just dotnet test # Run 93 xUnit tests +just dotnet test-rust # Run 68 Rust FFI tests +just dotnet fmt-check # Check .NET formatting +just dotnet fmt # Apply .NET formatting +just dotnet analyze # Roslyn analyzers (warnings as errors) +just dotnet examples # Run core examples +just dotnet dist # Build NuGet packages β†’ dist/dotnetsdk/ +just dotnet agent-framework-example # Run MAF example +just dotnet copilot-sdk-example # Run Copilot SDK example +``` + +## NuGet Packages + +| Package | Description | +|---------|-------------| +| `Hyperlight.HyperlightSandbox.PInvoke` | P/Invoke bindings + native library | +| `Hyperlight.HyperlightSandbox.Api` | High-level API (Sandbox, tools, snapshots) | +| `Hyperlight.HyperlightSandbox.Extensions.AI` | AI agent integration (CodeExecutionTool, AIFunction) | + +## API Reference + +### `SandboxBuilder` + +| Method | Description | +|--------|-------------| +| `WithModulePath(string)` | Path to `.wasm`/`.aot` guest (required for Wasm) | +| `WithBackend(SandboxBackend)` | `Wasm` (default) or `JavaScript` | +| `WithHeapSize(string\|ulong)` | Guest heap size (e.g. `"50Mi"`, default: platform-dependent) | +| `WithStackSize(string\|ulong)` | Guest stack size (e.g. `"35Mi"`, default: platform-dependent) | +| `WithInputDir(string)` | Read-only `/input` directory | +| `WithOutputDir(string)` | Writable `/output` directory | +| `WithTempOutput()` | Auto-created temp `/output` directory | +| `Build()` | Creates `Sandbox` instance | + +### `Sandbox` + +| Method | Description | +|--------|-------------| +| `Run(string code)` | Execute guest code, returns `ExecutionResult` | +| `RunAsync(string, CancellationToken)` | Async version on thread pool | +| `RegisterTool(name, handler)` | Register typed tool | +| `RegisterTool(name, Func)` | Register raw JSON tool | +| `AllowDomain(target, methods?)` | Add domain to network allowlist | +| `GetOutputFiles()` | List files written to output | +| `OutputPath` | Host path of output directory | +| `Snapshot()` | Capture sandbox state | +| `Restore(snapshot)` | Restore to captured state | + +### `ExecutionResult` + +| Property | Type | Description | +|----------|------|-------------| +| `Stdout` | `string` | Captured standard output | +| `Stderr` | `string` | Captured standard error | +| `ExitCode` | `int` | Guest exit code (0 = success) | +| `Success` | `bool` | `true` if `ExitCode == 0` | + +### Exceptions + +| Exception | When | +|-----------|------| +| `SandboxException` | Base type for all sandbox errors | +| `SandboxTimeoutException` | Execution exceeded time limit | +| `SandboxPoisonedException` | Sandbox state corrupted (recreate) | +| `SandboxPermissionException` | Network access denied | +| `SandboxGuestException` | Guest code raised an error | + +## Thread Safety + +The `Sandbox` class is **Send but not Sync** β€” it can be moved between threads but concurrent access is serialized via an internal lock. For parallel execution, create one sandbox per thread. + +```csharp +// βœ… OK β€” move between threads via Task.Run +var result = await sandbox.RunAsync("print('hello')"); + +// βœ… OK β€” sequential access from different threads +await Task.Run(() => sandbox.AllowDomain("https://example.com")); +sandbox.Run("..."); + +// ⚠️ Serialized β€” concurrent calls block, don't deadlock +// For throughput, use one sandbox per thread +``` + +## Requirements + +- .NET 8.0 SDK or later +- Rust 1.89+ (for building the FFI crate) +- Linux (Windows support coming via hyperlight) +- `just wasm guest-build` for Wasm backend examples + +## Contributing + +When adding new FFI functions: + +1. Add `extern "C"` export in `src/sdk/dotnet/ffi/src/lib.rs` +2. Add `[LibraryImport]` declaration in `PInvoke/SafeNativeMethods.cs` +3. Wrap in high-level API in `Api/` +4. Add tests +5. Run `just dotnet fmt` and `just dotnet analyze` +6. Ensure all tests pass with `just dotnet test` diff --git a/src/sdk/dotnet/core/Api/ExecutionResult.cs b/src/sdk/dotnet/core/Api/ExecutionResult.cs new file mode 100644 index 0000000..397885e --- /dev/null +++ b/src/sdk/dotnet/core/Api/ExecutionResult.cs @@ -0,0 +1,15 @@ +namespace HyperlightSandbox.Api; + +/// +/// The result of executing code inside the sandbox. +/// +/// Standard output captured from the guest. +/// Standard error captured from the guest. +/// Exit code from the guest process (0 = success). +public sealed record ExecutionResult(string Stdout, string Stderr, int ExitCode) +{ + /// + /// Returns true if the guest exited with code 0. + /// + public bool Success => ExitCode == 0; +} diff --git a/src/sdk/dotnet/core/Api/HyperlightSandbox.Api.csproj b/src/sdk/dotnet/core/Api/HyperlightSandbox.Api.csproj new file mode 100644 index 0000000..a11cf5e --- /dev/null +++ b/src/sdk/dotnet/core/Api/HyperlightSandbox.Api.csproj @@ -0,0 +1,31 @@ + + + + net8.0 + enable + enable + All + latest + true + HyperlightSandbox.Api + + + Hyperlight.HyperlightSandbox.Api + High-level .NET API for running code in secure, sandboxed environments using hyperlight. Provides Sandbox, tool registration, filesystem access, network allowlists, and snapshot/restore. + hyperlight;sandbox;wasm;security;code-execution;ai;tools + Apache-2.0 + https://github.com/hyperlight-dev/hyperlight-sandbox + https://github.com/hyperlight-dev/hyperlight-sandbox + git + true + + + + + + + + + + + diff --git a/src/sdk/dotnet/core/Api/Sandbox.cs b/src/sdk/dotnet/core/Api/Sandbox.cs new file mode 100644 index 0000000..aac459c --- /dev/null +++ b/src/sdk/dotnet/core/Api/Sandbox.cs @@ -0,0 +1,615 @@ +using System.Runtime.InteropServices; +using System.Text.Json; +using HyperlightSandbox.PInvoke; + +namespace HyperlightSandbox.Api; + +/// +/// A secure sandbox for executing guest code with configurable tools, +/// filesystem access, and network permissions. +/// +/// +/// +/// Thread safety: Sandbox instances are Send but not Sync β€” +/// they can be moved between threads but must not be accessed concurrently +/// from multiple threads. All public methods acquire an internal lock to +/// enforce this. If you need parallel execution, create one sandbox per thread. +/// +/// +/// Lifecycle: +/// +/// Create via . +/// Register tools via +/// (must be done before the first ). +/// Configure network via . +/// Execute code via (triggers lazy initialization +/// on first call). +/// Dispose when done. +/// +/// +/// +public sealed class Sandbox : IDisposable +{ + /// Maximum allowed code size (10 MiB). + public const int MaxCodeSize = 10 * 1024 * 1024; + + private readonly SandboxSafeHandle _handle; + private readonly object _gate = new(); + private readonly List _pinnedDelegates = []; + private bool _disposed; + + /// + /// Creates a new sandbox. Use instead of + /// calling this directly. + /// + internal Sandbox( + string? modulePath, + ulong heapSize, + ulong stackSize, + string? inputDir, + string? outputDir, + bool tempOutput, + SandboxBackend backend = SandboxBackend.Wasm) + { + // Pin the module path string for the FFI call duration (null for JS backend). + var modulePathPtr = modulePath != null + ? Marshal.StringToCoTaskMemUTF8(modulePath) + : IntPtr.Zero; + try + { + var options = new FFISandboxOptions + { + module_path = modulePathPtr, + heap_size = heapSize, + stack_size = stackSize, + backend = (uint)backend, + }; + + var result = SafeNativeMethods.hyperlight_sandbox_create(options); + result.ThrowIfError(); + + _handle = new SandboxSafeHandle(result.value); + } + finally + { + if (modulePathPtr != IntPtr.Zero) + { + Marshal.FreeCoTaskMem(modulePathPtr); + } + } + + // Apply optional configuration. + // Note: GC.KeepAlive(this) is not needed in the constructor β€” the + // object cannot be finalized while its constructor is still running. + if (inputDir != null) + { + var r = SafeNativeMethods.hyperlight_sandbox_set_input_dir(_handle, inputDir); + r.ThrowIfError(); + } + + if (outputDir != null) + { + var r = SafeNativeMethods.hyperlight_sandbox_set_output_dir(_handle, outputDir); + r.ThrowIfError(); + } + + if (tempOutput) + { + var r = SafeNativeMethods.hyperlight_sandbox_set_temp_output(_handle, true); + r.ThrowIfError(); + } + } + + // ----------------------------------------------------------------------- + // Tool registration + // ----------------------------------------------------------------------- + + /// + /// Registers a typed tool that guest code can invoke via + /// call_tool("name", ...). + /// + /// + /// The argument type. Public properties define the tool's parameter schema. + /// + /// + /// The return type. Serialized to JSON for the guest. + /// + /// Tool name (must be unique). + /// + /// Function invoked when the guest calls this tool. Receives deserialized + /// arguments. The return value is serialized to JSON for the guest. + /// + /// + /// Thrown if called after the first call. + /// + /// + /// + /// The delegate is pinned in memory via + /// for the lifetime of this sandbox. This prevents + /// the GC from collecting it while Rust holds the function pointer. + /// + /// + public void RegisterTool(string name, Func handler) + { + lock (_gate) + { + ThrowIfDisposed(); + + ArgumentException.ThrowIfNullOrWhiteSpace(name); + ArgumentNullException.ThrowIfNull(handler); + + // Build schema from TArgs properties. + var schemaJson = ToolSchemaBuilder.BuildSchema(); + + // Create the unmanaged callback that bridges .NET ↔ Rust. + ToolCallbackDelegate callback = (argsJsonPtr) => + { + try + { + // Read the JSON args from Rust. + var argsJson = Marshal.PtrToStringUTF8(argsJsonPtr); + if (argsJson == null) + { + return MarshalErrorResult("Tool callback received null arguments"); + } + + // Deserialize to the typed args. + var args = JsonSerializer.Deserialize(argsJson); + if (args == null) + { + return MarshalErrorResult( + $"Failed to deserialize arguments to {typeof(TArgs).Name}"); + } + + // Invoke the user's handler. + var result = handler(args); + + // Serialize the result to JSON. + var resultJson = JsonSerializer.Serialize(result); + return Marshal.StringToCoTaskMemUTF8(resultJson); + } +#pragma warning disable CA1031 // Catch general exception β€” intentional in FFI callback to prevent unhandled exceptions crossing the native boundary + catch (Exception ex) +#pragma warning restore CA1031 + { + return MarshalErrorResult(ex.Message); + } + }; + + // Pin the delegate so GC doesn't collect it while Rust holds the fn ptr. + // This is CRITICAL β€” without pinning, the function pointer becomes dangling + // after a GC cycle, causing SIGSEGV when Rust invokes it. + var gcHandle = GCHandle.Alloc(callback); + _pinnedDelegates.Add(gcHandle); + + var fnPtr = Marshal.GetFunctionPointerForDelegate(callback); + var result = SafeNativeMethods.hyperlight_sandbox_register_tool( + _handle, name, schemaJson, fnPtr); + + GC.KeepAlive(this); + result.ThrowIfError(); + } // lock + } + + /// + /// Registers a typed tool whose handler is asynchronous. + /// + /// + /// The argument type. Public properties define the tool's parameter schema. + /// + /// + /// The return type. Serialized to JSON for the guest. + /// + /// Tool name (must be unique). + /// + /// Async function invoked when the guest calls this tool. Receives + /// deserialized arguments. The return value is serialized to JSON for + /// the guest. + /// + /// + /// + /// The underlying FFI callback is synchronous β€” the async handler is + /// blocked on at the interop boundary via GetAwaiter().GetResult(). + /// This is safe because FFI callbacks run on threads without a + /// . + /// + /// + public void RegisterToolAsync(string name, Func> handler) + { + // Wrap the async handler into a sync handler that blocks at the FFI boundary. + RegisterTool(name, args => handler(args).GetAwaiter().GetResult()); + } + + /// + /// Registers a tool with raw JSON input/output. + /// + /// Tool name. + /// + /// Function receiving a JSON string and returning a JSON string. + /// Return {"error": "message"} to signal an error to the guest. + /// + public void RegisterTool(string name, Func handler) + { + lock (_gate) + { + ThrowIfDisposed(); + + ArgumentException.ThrowIfNullOrWhiteSpace(name); + ArgumentNullException.ThrowIfNull(handler); + + ToolCallbackDelegate callback = (argsJsonPtr) => + { + try + { + var argsJson = Marshal.PtrToStringUTF8(argsJsonPtr) ?? "{}"; + var resultJson = handler(argsJson); + return Marshal.StringToCoTaskMemUTF8(resultJson); + } +#pragma warning disable CA1031 // Catch general exception β€” intentional in FFI callback + catch (Exception ex) +#pragma warning restore CA1031 + { + return MarshalErrorResult(ex.Message); + } + }; + + var gcHandle = GCHandle.Alloc(callback); + _pinnedDelegates.Add(gcHandle); + + var fnPtr = Marshal.GetFunctionPointerForDelegate(callback); + var result = SafeNativeMethods.hyperlight_sandbox_register_tool( + _handle, name, null, fnPtr); + + GC.KeepAlive(this); + result.ThrowIfError(); + } // lock + } + + /// + /// Registers a raw JSON tool whose handler is asynchronous. + /// + /// Tool name. + /// + /// Async function receiving a JSON string and returning a JSON string. + /// Return {"error": "message"} to signal an error to the guest. + /// + /// + /// + /// The underlying FFI callback is synchronous β€” the async handler is + /// blocked on at the interop boundary via GetAwaiter().GetResult(). + /// This is safe because FFI callbacks run on threads without a + /// . + /// + /// + public void RegisterToolAsync(string name, Func> handler) + { + // Wrap the async handler into a sync handler that blocks at the FFI boundary. + RegisterTool(name, (string json) => handler(json).GetAwaiter().GetResult()); + } + + // ----------------------------------------------------------------------- + // Code execution + // ----------------------------------------------------------------------- + + /// + /// Executes guest code in the sandbox. + /// + /// The code to execute. + /// The execution result containing stdout, stderr, and exit code. + /// + /// Thrown if is null/empty or exceeds + /// . + /// + /// Thrown if execution fails. + /// + /// The first call triggers lazy initialization of the sandbox runtime + /// (building the Wasm sandbox, registering tools, applying network + /// permissions). Subsequent calls reuse the initialized runtime. + /// + public ExecutionResult Run(string code) + { + lock (_gate) + { + ThrowIfDisposed(); + + ArgumentException.ThrowIfNullOrWhiteSpace(code); + + if (System.Text.Encoding.UTF8.GetByteCount(code) > MaxCodeSize) + { + throw new ArgumentException( + $"Code exceeds maximum size (max {MaxCodeSize} bytes).", + nameof(code)); + } + + var result = SafeNativeMethods.hyperlight_sandbox_run(_handle, code); + GC.KeepAlive(this); + result.ThrowIfError(); + + var json = FFIResult.StringFromPtr(result.value); + if (json == null) + { + throw new SandboxException("Execution returned null result."); + } + + var execResult = JsonSerializer.Deserialize(json) + ?? throw new SandboxException("Failed to deserialize execution result."); + + return new ExecutionResult( + execResult.stdout ?? string.Empty, + execResult.stderr ?? string.Empty, + execResult.exit_code); + } // lock + } + + /// + /// Runs on the thread pool. + /// Only use if you need to free up the calling thread (e.g., UI apps). + /// For ASP.NET Core, prefer calling directly. + /// + /// + /// The cancellation token prevents scheduling of the task but cannot + /// cancel an in-progress FFI call. Once starts + /// executing in the native layer, it will run to completion. + /// + /// The code to execute. + /// Token to prevent scheduling (does not cancel in-progress execution). + public Task RunAsync(string code, CancellationToken cancellationToken = default) + => Task.Run(() => Run(code), cancellationToken); + + // ----------------------------------------------------------------------- + // Network + // ----------------------------------------------------------------------- + + /// + /// Adds a domain to the network allowlist. + /// + /// + /// URL or domain (e.g. "https://httpbin.org"). + /// + /// + /// Optional HTTP methods to allow (e.g. ["GET", "POST"]). + /// null allows all methods. + /// + public void AllowDomain(string target, IReadOnlyList? methods = null) + { + lock (_gate) + { + ThrowIfDisposed(); + + ArgumentException.ThrowIfNullOrWhiteSpace(target); + + string? methodsJson = methods != null + ? JsonSerializer.Serialize(methods) + : null; + + var result = SafeNativeMethods.hyperlight_sandbox_allow_domain( + _handle, target, methodsJson); + GC.KeepAlive(this); + result.ThrowIfError(); + } // lock + } + + // ----------------------------------------------------------------------- + // Filesystem + // ----------------------------------------------------------------------- + + /// + /// Lists filenames written to the output directory by guest code. + /// + /// List of filenames. + /// + /// Thrown if the sandbox has not been initialized (no + /// call yet). + /// + public IReadOnlyList GetOutputFiles() + { + lock (_gate) + { + ThrowIfDisposed(); + + var result = SafeNativeMethods.hyperlight_sandbox_get_output_files(_handle); + GC.KeepAlive(this); + result.ThrowIfError(); + + var json = FFIResult.StringFromPtr(result.value) ?? "[]"; + return JsonSerializer.Deserialize>(json) ?? []; + } // lock + } + + /// + /// Returns the host filesystem path of the output directory, or + /// null if no output directory is configured. + /// + public string? OutputPath + { + get + { + lock (_gate) + { + ThrowIfDisposed(); + + var result = SafeNativeMethods.hyperlight_sandbox_output_path(_handle); + GC.KeepAlive(this); + result.ThrowIfError(); + + return FFIResult.StringFromPtr(result.value); + } // lock + } + } + + // ----------------------------------------------------------------------- + // Snapshot / Restore + // ----------------------------------------------------------------------- + + /// + /// Takes a snapshot of the current sandbox state. + /// + /// A snapshot that can be passed to . + /// + /// The sandbox must be initialized (at least one call). + /// The returned snapshot must be disposed when no longer needed. + /// + public SandboxSnapshot Snapshot() + { + lock (_gate) + { + ThrowIfDisposed(); + + var result = SafeNativeMethods.hyperlight_sandbox_snapshot(_handle); + GC.KeepAlive(this); + result.ThrowIfError(); + + var snapshotHandle = new SnapshotSafeHandle(result.value); + return new SandboxSnapshot(snapshotHandle); + } // lock + } + + /// + /// Runs on the thread pool. + /// + /// Token to prevent scheduling. + public Task SnapshotAsync(CancellationToken cancellationToken = default) + => Task.Run(Snapshot, cancellationToken); + + /// + /// Restores the sandbox to a previously captured snapshot state. + /// + /// + /// The snapshot to restore from. This handle is NOT consumed and can + /// be reused. + /// + /// + /// Thrown if is null. + /// + /// + /// Thrown if has been disposed. + /// + public void Restore(SandboxSnapshot snapshot) + { + lock (_gate) + { + ThrowIfDisposed(); + + ArgumentNullException.ThrowIfNull(snapshot); + + if (snapshot.IsDisposed) + { +#pragma warning disable CA1513 // ThrowIf not applicable β€” checking external object's disposed state + throw new ObjectDisposedException(nameof(SandboxSnapshot), + "The snapshot has already been disposed."); +#pragma warning restore CA1513 + } + + var result = SafeNativeMethods.hyperlight_sandbox_restore(_handle, snapshot.Handle); + GC.KeepAlive(this); + GC.KeepAlive(snapshot); + result.ThrowIfError(); + } // lock + } + + /// + /// Runs on the thread pool. + /// + /// The snapshot to restore from. + /// Token to prevent scheduling. + public Task RestoreAsync(SandboxSnapshot snapshot, CancellationToken cancellationToken = default) + => Task.Run(() => Restore(snapshot), cancellationToken); + + // ----------------------------------------------------------------------- + // Dispose + // ----------------------------------------------------------------------- + + /// + /// Releases the sandbox and all associated native resources. + /// + /// + /// After disposal, all pinned tool callback delegates are freed, + /// allowing the GC to collect them. The native sandbox handle is + /// also released. + /// + public void Dispose() + { + lock (_gate) + { + if (_disposed) + { + return; + } + + _disposed = true; + + FreePinnedDelegates(); + + // Release the native sandbox handle. + if (!_handle.IsInvalid) + { + _handle.Dispose(); + } + + GC.SuppressFinalize(this); + } // lock + } + + /// + /// Destructor β€” ensures pinned GCHandles are freed even if the user + /// forgets to call . The + /// has its own finalizer for the native handle. + /// + ~Sandbox() + { + FreePinnedDelegates(); + } + + /// + /// Frees all pinned tool callback delegates. + /// Safe to call multiple times (idempotent). + /// + private void FreePinnedDelegates() + { + foreach (var gcHandle in _pinnedDelegates) + { + if (gcHandle.IsAllocated) + { + gcHandle.Free(); + } + } + + _pinnedDelegates.Clear(); + } + + // ----------------------------------------------------------------------- + // Private helpers + // ----------------------------------------------------------------------- + + /// + /// Throws if this sandbox has been + /// disposed. Must be called inside lock (_gate). + /// + private void ThrowIfDisposed() + { + ObjectDisposedException.ThrowIf(_disposed, this); + } + + /// + /// Marshals an error message into a CoTaskMem UTF-8 JSON string for + /// returning from a tool callback. + /// + private static IntPtr MarshalErrorResult(string message) + { + var errorJson = JsonSerializer.Serialize(new { error = message }); + return Marshal.StringToCoTaskMemUTF8(errorJson); + } + + /// + /// DTO for deserializing the JSON execution result from Rust. + /// + [System.Diagnostics.CodeAnalysis.SuppressMessage( + "Performance", "CA1812:Avoid uninstantiated internal classes", + Justification = "Instantiated by System.Text.Json during deserialization")] + private sealed class ExecutionResultDto + { + public string? stdout { get; set; } + public string? stderr { get; set; } + public int exit_code { get; set; } + } +} diff --git a/src/sdk/dotnet/core/Api/SandboxBackend.cs b/src/sdk/dotnet/core/Api/SandboxBackend.cs new file mode 100644 index 0000000..72308c8 --- /dev/null +++ b/src/sdk/dotnet/core/Api/SandboxBackend.cs @@ -0,0 +1,20 @@ +namespace HyperlightSandbox.Api; + +/// +/// The sandbox backend to use for code execution. +/// +public enum SandboxBackend +{ + /// + /// WebAssembly component backend. + /// Requires a .wasm or .aot guest module + /// (e.g., Python compiled to Wasm). + /// + Wasm = 0, + + /// + /// Hyperlight-JS built-in JavaScript backend. + /// Uses an embedded QuickJS runtime β€” no module path needed. + /// + JavaScript = 1, +} diff --git a/src/sdk/dotnet/core/Api/SandboxBuilder.cs b/src/sdk/dotnet/core/Api/SandboxBuilder.cs new file mode 100644 index 0000000..7f4e96c --- /dev/null +++ b/src/sdk/dotnet/core/Api/SandboxBuilder.cs @@ -0,0 +1,176 @@ +namespace HyperlightSandbox.Api; + +/// +/// A builder for creating instances with custom +/// configuration. +/// +/// +/// +/// The builder can be reused to create multiple sandboxes with the same +/// configuration. +/// +/// +/// +/// var sandbox = new SandboxBuilder() +/// .WithModulePath("/path/to/python-sandbox.aot") +/// .WithHeapSize("50Mi") +/// .WithTempOutput() +/// .Build(); +/// +/// +/// +public sealed class SandboxBuilder +{ + private string? _modulePath; + private ulong _heapSize; + private ulong _stackSize; + private string? _inputDir; + private string? _outputDir; + private bool _tempOutput; + private SandboxBackend _backend = SandboxBackend.Wasm; + + /// + /// Sets the backend to use. Default is . + /// + /// The backend type. + /// This builder for chaining. + public SandboxBuilder WithBackend(SandboxBackend backend) + { + _backend = backend; + return this; + } + + /// + /// Sets the path to the guest module (.wasm or .aot file). + /// Required for , not needed for + /// . + /// + /// Absolute or relative path to the guest module. + /// This builder for chaining. + public SandboxBuilder WithModulePath(string path) + { + ArgumentException.ThrowIfNullOrWhiteSpace(path); + _modulePath = path; + return this; + } + + /// + /// Sets the guest heap size. + /// + /// + /// Size string (e.g. "25Mi", "2Gi") or raw bytes as string. + /// + /// This builder for chaining. + public SandboxBuilder WithHeapSize(string size) + { + _heapSize = SizeParser.Parse(size); + return this; + } + + /// + /// Sets the guest heap size in bytes. + /// + /// Heap size in bytes. + /// This builder for chaining. + public SandboxBuilder WithHeapSize(ulong bytes) + { + _heapSize = bytes; + return this; + } + + /// + /// Sets the guest stack size. + /// + /// + /// Size string (e.g. "35Mi") or raw bytes as string. + /// + /// This builder for chaining. + public SandboxBuilder WithStackSize(string size) + { + _stackSize = SizeParser.Parse(size); + return this; + } + + /// + /// Sets the guest stack size in bytes. + /// + /// Stack size in bytes. + /// This builder for chaining. + public SandboxBuilder WithStackSize(ulong bytes) + { + _stackSize = bytes; + return this; + } + + /// + /// Sets the host directory exposed as read-only /input inside + /// the sandbox. + /// + /// Path to the input directory. + /// This builder for chaining. + public SandboxBuilder WithInputDir(string path) + { + ArgumentException.ThrowIfNullOrWhiteSpace(path); + _inputDir = path; + return this; + } + + /// + /// Sets the host directory exposed as writable /output inside + /// the sandbox. + /// + /// Path to the output directory. + /// This builder for chaining. + public SandboxBuilder WithOutputDir(string path) + { + ArgumentException.ThrowIfNullOrWhiteSpace(path); + _outputDir = path; + return this; + } + + /// + /// Enables a temporary writable /output directory. + /// Ignored if was called. + /// + /// Whether to enable temp output (default: true). + /// This builder for chaining. + public SandboxBuilder WithTempOutput(bool enabled = true) + { + _tempOutput = enabled; + return this; + } + + /// + /// Creates a new with the configured settings. + /// + /// A new sandbox instance. + /// + /// Thrown if was not called. + /// + /// + /// Thrown if the native sandbox creation fails. + /// + public Sandbox Build() + { + if (_backend == SandboxBackend.Wasm && string.IsNullOrWhiteSpace(_modulePath)) + { + throw new InvalidOperationException( + "Module path is required for the Wasm backend. Call WithModulePath() before Build()."); + } + + if (_backend == SandboxBackend.JavaScript && !string.IsNullOrWhiteSpace(_modulePath)) + { + throw new InvalidOperationException( + "Module path must not be set for the JavaScript backend (it has a built-in runtime)."); + } + + return new Sandbox( + _modulePath, + _heapSize, + _stackSize, + _inputDir, + _outputDir, + _tempOutput, + _backend); + } +} diff --git a/src/sdk/dotnet/core/Api/SandboxSnapshot.cs b/src/sdk/dotnet/core/Api/SandboxSnapshot.cs new file mode 100644 index 0000000..4e6c3f6 --- /dev/null +++ b/src/sdk/dotnet/core/Api/SandboxSnapshot.cs @@ -0,0 +1,39 @@ +using HyperlightSandbox.PInvoke; + +namespace HyperlightSandbox.Api; + +/// +/// Wraps a native snapshot handle, ensuring proper cleanup. +/// Snapshots can be reused for multiple calls. +/// +/// +/// +/// Snapshots capture the memory state of the sandbox at a point in time. +/// Use to create one, then +/// to return the sandbox to that state. +/// +/// +/// This class implements . Always dispose when +/// done to free native memory promptly. +/// +/// +public sealed class SandboxSnapshot : IDisposable +{ + internal readonly SnapshotSafeHandle Handle; + + internal SandboxSnapshot(SnapshotSafeHandle handle) + { + Handle = handle; + } + + /// + /// Returns true if the snapshot has been disposed. + /// + public bool IsDisposed => Handle.IsInvalid || Handle.IsClosed; + + /// Releases the native snapshot resource. + public void Dispose() + { + Handle.Dispose(); + } +} diff --git a/src/sdk/dotnet/core/Api/SizeParser.cs b/src/sdk/dotnet/core/Api/SizeParser.cs new file mode 100644 index 0000000..650c528 --- /dev/null +++ b/src/sdk/dotnet/core/Api/SizeParser.cs @@ -0,0 +1,73 @@ +namespace HyperlightSandbox.Api; + +/// +/// Parses human-readable size strings (e.g. "25Mi", "2Gi") +/// into byte values. Matches the Python SDK's size format for consistency. +/// +/// +/// Supported suffixes: +/// +/// Ki β€” kibibytes (Γ—1024) +/// Mi β€” mebibytes (Γ—1024Β²) +/// Gi β€” gibibytes (Γ—1024Β³) +/// No suffix β€” raw bytes +/// +/// +internal static class SizeParser +{ + /// + /// Parses a size string to bytes. + /// + /// Size string like "25Mi" or "1024". + /// Size in bytes. + /// + /// Thrown if is null, empty, or not a valid size string. + /// + /// + /// Thrown if the computed size overflows . + /// + public static ulong Parse(string size) + { + ArgumentException.ThrowIfNullOrWhiteSpace(size); + + var trimmed = size.AsSpan().Trim(); + + ulong multiplier; + ReadOnlySpan numberPart; + + if (trimmed.EndsWith("Gi", StringComparison.Ordinal)) + { + multiplier = 1024UL * 1024 * 1024; + numberPart = trimmed[..^2]; + } + else if (trimmed.EndsWith("Mi", StringComparison.Ordinal)) + { + multiplier = 1024UL * 1024; + numberPart = trimmed[..^2]; + } + else if (trimmed.EndsWith("Ki", StringComparison.Ordinal)) + { + multiplier = 1024UL; + numberPart = trimmed[..^2]; + } + else + { + multiplier = 1; + numberPart = trimmed; + } + + if (!ulong.TryParse(numberPart, out var value)) + { + throw new ArgumentException($"Invalid size string: '{size}'", nameof(size)); + } + + try + { + return checked(value * multiplier); + } + catch (OverflowException) + { + throw new OverflowException($"Size value overflows: '{size}'"); + } + } +} diff --git a/src/sdk/dotnet/core/Api/ToolSchemaBuilder.cs b/src/sdk/dotnet/core/Api/ToolSchemaBuilder.cs new file mode 100644 index 0000000..5d683e3 --- /dev/null +++ b/src/sdk/dotnet/core/Api/ToolSchemaBuilder.cs @@ -0,0 +1,100 @@ +using System.Reflection; +using System.Text.Json; + +namespace HyperlightSandbox.Api; + +/// +/// Generates tool argument schemas from .NET types via reflection. +/// Used by to +/// auto-create the JSON schema passed to the Rust FFI layer. +/// +internal static class ToolSchemaBuilder +{ + /// + /// Builds a JSON schema string from the public properties of + /// . All properties are treated as required. + /// + /// + /// The type whose public properties define the tool's arguments. + /// + /// + /// A JSON string like: + /// {"args": {"a": "Number", "b": "String"}, "required": ["a", "b"]} + /// + public static string BuildSchema() + { + var type = typeof(TArgs); + var args = new Dictionary(); + var required = new List(); + + foreach (var prop in type.GetProperties(BindingFlags.Public | BindingFlags.Instance)) + { + var argType = MapType(prop.PropertyType); + // Use the JSON property name if available, otherwise the C# name + var jsonName = GetJsonPropertyName(prop); + args[jsonName] = argType; + required.Add(jsonName); + } + + var schema = new Dictionary + { + ["args"] = args, + ["required"] = required, + }; + + return JsonSerializer.Serialize(schema); + } + + /// + /// Maps a .NET type to the FFI schema type name. + /// + private static string MapType(Type type) + { + // Unwrap Nullable + var underlying = Nullable.GetUnderlyingType(type) ?? type; + + if (underlying == typeof(int) + || underlying == typeof(long) + || underlying == typeof(float) + || underlying == typeof(double) + || underlying == typeof(decimal) + || underlying == typeof(short) + || underlying == typeof(byte) + || underlying == typeof(uint) + || underlying == typeof(ulong) + || underlying == typeof(ushort)) + { + return "Number"; + } + + if (underlying == typeof(string)) + { + return "String"; + } + + if (underlying == typeof(bool)) + { + return "Boolean"; + } + + if (underlying.IsArray + || (underlying.IsGenericType + && underlying.GetGenericTypeDefinition() == typeof(List<>))) + { + return "Array"; + } + + // Default: treat complex types as Object + return "Object"; + } + + /// + /// Gets the JSON property name for a property, respecting + /// . + /// + private static string GetJsonPropertyName(PropertyInfo prop) + { + var attr = prop.GetCustomAttribute(); + return attr?.Name ?? prop.Name; + } +} diff --git a/src/sdk/dotnet/core/Examples/BasicExample/BasicExample.csproj b/src/sdk/dotnet/core/Examples/BasicExample/BasicExample.csproj new file mode 100644 index 0000000..d67765a --- /dev/null +++ b/src/sdk/dotnet/core/Examples/BasicExample/BasicExample.csproj @@ -0,0 +1,12 @@ + + + Exe + net8.0 + enable + enable + + + + + + diff --git a/src/sdk/dotnet/core/Examples/BasicExample/Program.cs b/src/sdk/dotnet/core/Examples/BasicExample/Program.cs new file mode 100644 index 0000000..9f485ec --- /dev/null +++ b/src/sdk/dotnet/core/Examples/BasicExample/Program.cs @@ -0,0 +1,44 @@ +// Basic example β€” execute Python code in a secure sandbox. +// +// Mirrors: src/wasm_sandbox/examples/python_basics.rs +// +// Prerequisites: +// just wasm guest-build # builds python-sandbox.aot +// just dotnet build # builds the .NET SDK + FFI + +using HyperlightSandbox.Api; +using HyperlightSandbox.Examples.Common; + +var guestPath = ExampleHelper.RequirePythonGuest(); + +Console.WriteLine("=== Hyperlight Sandbox .NET β€” Basic Example ===\n"); +Console.WriteLine($"Guest module: {guestPath}\n"); + +using var sandbox = new SandboxBuilder() + .WithModulePath(guestPath) + .Build(); + +// --- Test 1: Basic code execution --- +Console.WriteLine("═══ Test 1: Basic code execution ═══"); +var result = sandbox.Run(""" + import math + primes = [n for n in range(2, 50) if all(n % i != 0 for i in range(2, int(math.sqrt(n)) + 1))] + print(f"Primes under 50: {primes}") + print(f"Count: {len(primes)}") + """); + +Console.WriteLine($"stdout: {result.Stdout}"); +Console.WriteLine($"stderr: {result.Stderr}"); +Console.WriteLine($"exit_code: {result.ExitCode}"); +Console.WriteLine($"success: {result.Success}\n"); + +// --- Test 2: Multiple runs --- +Console.WriteLine("═══ Test 2: Multiple sequential runs ═══"); +for (int i = 1; i <= 3; i++) +{ + var r = sandbox.Run($"print('Run {i}: Hello from the sandbox!')"); + Console.WriteLine($" Run {i}: {r.Stdout.Trim()}"); +} + +Console.WriteLine("\nβœ… Basic example finished successfully!"); +return 0; diff --git a/src/sdk/dotnet/core/Examples/Common/Common.csproj b/src/sdk/dotnet/core/Examples/Common/Common.csproj new file mode 100644 index 0000000..8356bff --- /dev/null +++ b/src/sdk/dotnet/core/Examples/Common/Common.csproj @@ -0,0 +1,8 @@ + + + net8.0 + enable + enable + HyperlightSandbox.Examples.Common + + diff --git a/src/sdk/dotnet/core/Examples/Common/ExampleHelper.cs b/src/sdk/dotnet/core/Examples/Common/ExampleHelper.cs new file mode 100644 index 0000000..b02bf9f --- /dev/null +++ b/src/sdk/dotnet/core/Examples/Common/ExampleHelper.cs @@ -0,0 +1,46 @@ +namespace HyperlightSandbox.Examples.Common; + +/// +/// Shared utilities for .NET SDK examples. +/// +public static class ExampleHelper +{ + /// + /// Finds the Python guest module by walking up from the executing assembly's + /// directory until we find the repo root (identified by Cargo.toml). + /// + /// Absolute path to python-sandbox.aot, or null if not found. + public static string? FindPythonGuest() + { + var dir = AppContext.BaseDirectory; + while (dir != null) + { + if (File.Exists(Path.Combine(dir, "Cargo.toml")) + && Directory.Exists(Path.Combine(dir, "src", "wasm_sandbox"))) + { + var guestPath = Path.Combine(dir, + "src", "wasm_sandbox", "guests", "python", "python-sandbox.aot"); + return File.Exists(guestPath) ? Path.GetFullPath(guestPath) : null; + } + + dir = Path.GetDirectoryName(dir); + } + + return null; + } + + /// + /// Gets the guest path or prints an error and exits. + /// + public static string RequirePythonGuest() + { + var path = FindPythonGuest(); + if (path == null) + { + Console.WriteLine("❌ Guest module not found. Run 'just wasm guest-build' first."); + Environment.Exit(1); + } + + return path; + } +} diff --git a/src/sdk/dotnet/core/Examples/FilesystemExample/FilesystemExample.csproj b/src/sdk/dotnet/core/Examples/FilesystemExample/FilesystemExample.csproj new file mode 100644 index 0000000..d67765a --- /dev/null +++ b/src/sdk/dotnet/core/Examples/FilesystemExample/FilesystemExample.csproj @@ -0,0 +1,12 @@ + + + Exe + net8.0 + enable + enable + + + + + + diff --git a/src/sdk/dotnet/core/Examples/FilesystemExample/Program.cs b/src/sdk/dotnet/core/Examples/FilesystemExample/Program.cs new file mode 100644 index 0000000..683e1f3 --- /dev/null +++ b/src/sdk/dotnet/core/Examples/FilesystemExample/Program.cs @@ -0,0 +1,65 @@ +// Filesystem example β€” input/output directories and temp output. +// +// Mirrors: src/wasm_sandbox/examples/python_filesystem_demo.rs + +using HyperlightSandbox.Api; +using HyperlightSandbox.Examples.Common; + +var guestPath = ExampleHelper.RequirePythonGuest(); + +Console.WriteLine("=== Hyperlight Sandbox .NET β€” Filesystem Example ===\n"); + +// --- Test 1: Temp output --- +Console.WriteLine("═══ Test 1: Temp output directory ═══"); +using (var sandbox = new SandboxBuilder() + .WithModulePath(guestPath) + .WithTempOutput() + .Build()) +{ + sandbox.Run(""" + with open("/output/hello.txt", "w") as f: + f.write("Hello from the sandbox!") + print("Wrote hello.txt") + """); + + var files = sandbox.GetOutputFiles(); + Console.WriteLine($" Output files: [{string.Join(", ", files)}]"); + Console.WriteLine($" Output path: {sandbox.OutputPath}"); +} + +// --- Test 2: Input directory --- +Console.WriteLine("\n═══ Test 2: Input directory ═══"); + +// Create a temp input directory with a test file. +var inputDir = Path.Combine(Path.GetTempPath(), $"hyperlight-input-{Guid.NewGuid():N}"); +Directory.CreateDirectory(inputDir); +File.WriteAllText(Path.Combine(inputDir, "data.txt"), "Input data from host"); + +try +{ + using var sandbox = new SandboxBuilder() + .WithModulePath(guestPath) + .WithInputDir(inputDir) + .WithTempOutput() + .Build(); + + var result = sandbox.Run(""" + with open("/input/data.txt", "r") as f: + content = f.read() + print(f"Read from input: {content}") + + with open("/output/processed.txt", "w") as f: + f.write(f"Processed: {content.upper()}") + print("Wrote processed.txt to output") + """); + + Console.WriteLine($" stdout: {result.Stdout.Trim()}"); + Console.WriteLine($" Output files: [{string.Join(", ", sandbox.GetOutputFiles())}]"); +} +finally +{ + Directory.Delete(inputDir, recursive: true); +} + +Console.WriteLine("\nβœ… Filesystem example finished successfully!"); +return 0; diff --git a/src/sdk/dotnet/core/Examples/NetworkExample/NetworkExample.csproj b/src/sdk/dotnet/core/Examples/NetworkExample/NetworkExample.csproj new file mode 100644 index 0000000..d67765a --- /dev/null +++ b/src/sdk/dotnet/core/Examples/NetworkExample/NetworkExample.csproj @@ -0,0 +1,12 @@ + + + Exe + net8.0 + enable + enable + + + + + + diff --git a/src/sdk/dotnet/core/Examples/NetworkExample/Program.cs b/src/sdk/dotnet/core/Examples/NetworkExample/Program.cs new file mode 100644 index 0000000..708ef54 --- /dev/null +++ b/src/sdk/dotnet/core/Examples/NetworkExample/Program.cs @@ -0,0 +1,56 @@ +// Network example β€” HTTP allowlist and guest HTTP requests. +// +// Mirrors: src/wasm_sandbox/examples/python_network_demo.rs + +using HyperlightSandbox.Api; +using HyperlightSandbox.Examples.Common; + +var guestPath = ExampleHelper.RequirePythonGuest(); + +Console.WriteLine("=== Hyperlight Sandbox .NET β€” Network Example ===\n"); + +// --- Test 1: Allow a domain with all methods --- +Console.WriteLine("═══ Test 1: HTTP GET with allowlisted domain ═══"); +using (var sandbox = new SandboxBuilder() + .WithModulePath(guestPath) + .Build()) +{ + sandbox.AllowDomain("https://httpbin.org"); + + var result = sandbox.Run(""" + response = http_get("https://httpbin.org/get") + print(f"Status: {response['status']}") + print(f"Has headers: {'headers' in response}") + """); + + Console.WriteLine($" stdout: {result.Stdout.Trim()}"); + Console.WriteLine($" success: {result.Success}"); +} + +// --- Test 2: Method-filtered access --- +Console.WriteLine("\n═══ Test 2: Method-filtered access (GET only) ═══"); +using (var sandbox = new SandboxBuilder() + .WithModulePath(guestPath) + .Build()) +{ + // Only allow GET requests to httpbin.org. + sandbox.AllowDomain("https://httpbin.org", ["GET"]); + + var result = sandbox.Run(""" + # GET should succeed + response = http_get("https://httpbin.org/get") + print(f"GET status: {response['status']}") + + # POST should fail (method not allowed) + try: + response = http_post("https://httpbin.org/post", body="test") + print(f"POST status: {response['status']}") + except Exception as e: + print(f"POST blocked: {e}") + """); + + Console.WriteLine($" stdout:\n{result.Stdout}"); +} + +Console.WriteLine("βœ… Network example finished successfully!"); +return 0; diff --git a/src/sdk/dotnet/core/Examples/SnapshotExample/Program.cs b/src/sdk/dotnet/core/Examples/SnapshotExample/Program.cs new file mode 100644 index 0000000..fa3cfe2 --- /dev/null +++ b/src/sdk/dotnet/core/Examples/SnapshotExample/Program.cs @@ -0,0 +1,65 @@ +// Snapshot/restore example β€” fast sandbox reset without cold start. +// +// Demonstrates the snapshot/restore pattern used for agent tool calls: +// take a "warm" snapshot after initialization, then restore to it +// before each execution for a clean-but-fast environment. + +using System.Diagnostics; +using HyperlightSandbox.Api; +using HyperlightSandbox.Examples.Common; + +var guestPath = ExampleHelper.RequirePythonGuest(); + +Console.WriteLine("=== Hyperlight Sandbox .NET β€” Snapshot Example ===\n"); + +using var sandbox = new SandboxBuilder() + .WithModulePath(guestPath) + .WithTempOutput() + .Build(); + +// --- Cold start: first run initializes the sandbox --- +Console.WriteLine("═══ Step 1: Cold start (first run) ═══"); +var sw = Stopwatch.StartNew(); +var result = sandbox.Run("print('Cold start complete')"); +sw.Stop(); +Console.WriteLine($" stdout: {result.Stdout.Trim()}"); +Console.WriteLine($" Cold start time: {sw.ElapsedMilliseconds}ms"); + +// --- Take a snapshot of the warm state --- +Console.WriteLine("\n═══ Step 2: Take snapshot ═══"); +using var snapshot = sandbox.Snapshot(); +Console.WriteLine(" Snapshot taken."); + +// --- Modify state --- +Console.WriteLine("\n═══ Step 3: Modify state ═══"); +sandbox.Run(""" + with open("/output/state.txt", "w") as f: + f.write("modified state") + print("State modified β€” wrote to /output/state.txt") + """); +Console.WriteLine($" Output files after modification: [{string.Join(", ", sandbox.GetOutputFiles())}]"); + +// --- Restore from snapshot β€”- state should be clean --- +Console.WriteLine("\n═══ Step 4: Restore from snapshot ═══"); +sandbox.Restore(snapshot); +Console.WriteLine(" Snapshot restored."); + +sw.Restart(); +result = sandbox.Run("print('After restore β€” clean state')"); +sw.Stop(); +Console.WriteLine($" stdout: {result.Stdout.Trim()}"); +Console.WriteLine($" Warm restore time: {sw.ElapsedMilliseconds}ms"); + +// --- Reuse the snapshot multiple times --- +Console.WriteLine("\n═══ Step 5: Reuse snapshot multiple times ═══"); +for (int i = 1; i <= 3; i++) +{ + sandbox.Restore(snapshot); + sw.Restart(); + result = sandbox.Run($"print(f'Iteration {i} from clean state')"); + sw.Stop(); + Console.WriteLine($" Iteration {i}: {result.Stdout.Trim()} ({sw.ElapsedMilliseconds}ms)"); +} + +Console.WriteLine("\nβœ… Snapshot example finished successfully!"); +return 0; diff --git a/src/sdk/dotnet/core/Examples/SnapshotExample/SnapshotExample.csproj b/src/sdk/dotnet/core/Examples/SnapshotExample/SnapshotExample.csproj new file mode 100644 index 0000000..d67765a --- /dev/null +++ b/src/sdk/dotnet/core/Examples/SnapshotExample/SnapshotExample.csproj @@ -0,0 +1,12 @@ + + + Exe + net8.0 + enable + enable + + + + + + diff --git a/src/sdk/dotnet/core/Examples/ToolRegistrationExample/Program.cs b/src/sdk/dotnet/core/Examples/ToolRegistrationExample/Program.cs new file mode 100644 index 0000000..3c90283 --- /dev/null +++ b/src/sdk/dotnet/core/Examples/ToolRegistrationExample/Program.cs @@ -0,0 +1,94 @@ +// Tool registration example β€” register host functions callable from guest code. +// +// Mirrors: src/wasm_sandbox/examples/python_basics.rs (tool dispatch section) + +using System.Text.Json.Serialization; +using HyperlightSandbox.Api; +using HyperlightSandbox.Examples.Common; + +var guestPath = ExampleHelper.RequirePythonGuest(); + +Console.WriteLine("=== Hyperlight Sandbox .NET β€” Tool Registration Example ===\n"); + +using var sandbox = new SandboxBuilder() + .WithModulePath(guestPath) + .Build(); + +// --- Register typed tools --- +sandbox.RegisterTool("add", args => args.A + args.B); +sandbox.RegisterTool("multiply", args => args.A * args.B); +sandbox.RegisterTool("greet", args => $"Hello, {args.Name}!"); + +// --- Register a raw JSON tool --- +sandbox.RegisterTool("lookup", (string json) => +{ + // Simple key-value lookup. + if (json.Contains("api_key")) + return """{"result": "sk-demo-12345"}"""; + if (json.Contains("model")) + return """{"result": "gpt-4"}"""; + return """{"result": "not found"}"""; +}); + +// --- Register an async typed tool (e.g. simulating an external API call) --- +sandbox.RegisterToolAsync("add_async", async args => +{ + await Task.Delay(10).ConfigureAwait(false); // Simulate I/O latency + return args.A + args.B; +}); + +// --- Test 1: Typed tool dispatch --- +Console.WriteLine("═══ Test 1: Typed tool dispatch ═══"); +var result = sandbox.Run(""" + sum_result = call_tool("add", a=10, b=32) + print(f"10 + 32 = {sum_result}") + + product = call_tool("multiply", a=7, b=6) + print(f"7 Γ— 6 = {product}") + + greeting = call_tool("greet", name="Hyperlight") + print(f"Greeting: {greeting}") + """); + +Console.WriteLine($"stdout:\n{result.Stdout}"); + +// --- Test 2: Raw JSON tool dispatch --- +Console.WriteLine("═══ Test 2: Raw JSON tool dispatch ═══"); +result = sandbox.Run(""" + key = call_tool("lookup", key="api_key") + print(f"API key: {key}") + + model = call_tool("lookup", key="model") + print(f"Model: {model}") + """); + +Console.WriteLine($"stdout:\n{result.Stdout}"); + +// --- Test 3: Async tool dispatch --- +Console.WriteLine("═══ Test 3: Async tool dispatch ═══"); + +result = sandbox.Run(""" + async_sum = call_tool("add_async", a=100, b=200) + print(f"Async 100 + 200 = {async_sum}") + """); + +Console.WriteLine($"stdout:\n{result.Stdout}"); + +Console.WriteLine("βœ… Tool registration example finished successfully!"); +return 0; + +// --- DTOs --- +internal sealed class MathArgs +{ + [JsonPropertyName("a")] + public double A { get; set; } + + [JsonPropertyName("b")] + public double B { get; set; } +} + +internal sealed class GreetArgs +{ + [JsonPropertyName("name")] + public string Name { get; set; } = "world"; +} diff --git a/src/sdk/dotnet/core/Examples/ToolRegistrationExample/ToolRegistrationExample.csproj b/src/sdk/dotnet/core/Examples/ToolRegistrationExample/ToolRegistrationExample.csproj new file mode 100644 index 0000000..d67765a --- /dev/null +++ b/src/sdk/dotnet/core/Examples/ToolRegistrationExample/ToolRegistrationExample.csproj @@ -0,0 +1,12 @@ + + + Exe + net8.0 + enable + enable + + + + + + diff --git a/src/sdk/dotnet/core/Extensions.AI/CodeExecutionTool.cs b/src/sdk/dotnet/core/Extensions.AI/CodeExecutionTool.cs new file mode 100644 index 0000000..b3e4e2c --- /dev/null +++ b/src/sdk/dotnet/core/Extensions.AI/CodeExecutionTool.cs @@ -0,0 +1,225 @@ +using System.ComponentModel; +using System.Text.Json; +using Microsoft.Extensions.AI; + +namespace HyperlightSandbox.Extensions.AI; + +/// +/// A high-level wrapper around designed for agent +/// framework integration. +/// +/// Provides a self-contained code execution tool that: +/// +/// Manages sandbox lifecycle (create, snapshot, restore, dispose). +/// Provides snapshot/restore per execution for clean state. +/// Exposes itself as an for use with +/// GitHub Copilot SDK and Microsoft Agent Framework. +/// +/// +/// +/// +/// +/// var tool = new CodeExecutionTool( +/// new SandboxBuilder() +/// .WithModulePath("python-sandbox.aot") +/// .WithTempOutput()); +/// +/// tool.RegisterTool<AddArgs, AddResult>("add", +/// args => new AddResult { Sum = args.A + args.B }); +/// +/// // Use with Copilot SDK: +/// var session = await client.CreateSessionAsync(new SessionConfig +/// { +/// Tools = [tool.AsAIFunction()], +/// }); +/// +/// +/// +public sealed class CodeExecutionTool : IDisposable +{ + private readonly Api.Sandbox _sandbox; + private Api.SandboxSnapshot? _snapshot; + private bool _initialized; + private bool _disposed; + private readonly object _gate = new(); + + /// + /// Creates a new code execution tool from a pre-configured builder. + /// + /// + /// A configured with the desired module, + /// heap/stack sizes, and filesystem options. + /// + public CodeExecutionTool(Api.SandboxBuilder builder) + { + ArgumentNullException.ThrowIfNull(builder); + _sandbox = builder.Build(); + } + + /// + /// Registers a typed tool that guest code can invoke via call_tool(). + /// Must be called before the first . + /// + public void RegisterTool(string name, Func handler) + { + lock (_gate) + { + ObjectDisposedException.ThrowIf(_disposed, this); + _sandbox.RegisterTool(name, handler); + } + } + + /// + /// Registers a raw JSON tool that guest code can invoke. + /// + public void RegisterTool(string name, Func handler) + { + lock (_gate) + { + ObjectDisposedException.ThrowIf(_disposed, this); + _sandbox.RegisterTool(name, handler); + } + } + + /// + /// Registers a typed tool whose handler is asynchronous. + /// Must be called before the first . + /// + public void RegisterToolAsync(string name, Func> handler) + { + lock (_gate) + { + ObjectDisposedException.ThrowIf(_disposed, this); + _sandbox.RegisterToolAsync(name, handler); + } + } + + /// + /// Registers a raw JSON tool whose handler is asynchronous. + /// + public void RegisterToolAsync(string name, Func> handler) + { + lock (_gate) + { + ObjectDisposedException.ThrowIf(_disposed, this); + _sandbox.RegisterToolAsync(name, handler); + } + } + + /// + /// Adds a domain to the network allowlist. + /// + public void AllowDomain(string target, IReadOnlyList? methods = null) + { + lock (_gate) + { + ObjectDisposedException.ThrowIf(_disposed, this); + _sandbox.AllowDomain(target, methods); + } + } + + /// + /// Executes code in the sandbox with automatic snapshot/restore for + /// clean state between calls. + /// + /// + /// On the first call, the sandbox is lazily initialized by running a + /// no-op to trigger runtime setup, then a "warm" snapshot is taken of the + /// clean post-init state. Subsequent calls restore to this clean snapshot + /// before executing user code, preventing side effects from leaking. + /// + /// The code to execute. + /// The execution result. + public Api.ExecutionResult Execute(string code) + { + lock (_gate) + { + ObjectDisposedException.ThrowIf(_disposed, this); + + if (!_initialized) + { + // Initialize the sandbox runtime with a no-op, then snapshot + // the CLEAN state before any user code pollutes it. + // Use empty string that's valid in both Python ("") and JS (""). + _sandbox.Run("None"); + _snapshot = _sandbox.Snapshot(); + _initialized = true; + } + + // Restore to clean post-init state before executing user code. + if (_snapshot != null) + { + _sandbox.Restore(_snapshot); + } + + return _sandbox.Run(code); + } // lock + } + + /// + /// Returns this tool as an for use with + /// GitHub Copilot SDK or Microsoft Agent Framework. + /// + /// Tool name exposed to the LLM (default: "execute_code"). + /// + /// Tool description shown to the LLM (default: standard code execution description). + /// + /// An ready for agent registration. + public AIFunction AsAIFunction( + string name = "execute_code", + string? description = null) + { + ObjectDisposedException.ThrowIf(_disposed, this); + + description ??= "Execute code in a secure sandboxed environment. " + + "The code runs in an isolated sandbox with no access to the host " + + "system except for explicitly registered tools and allowed domains."; + + return AIFunctionFactory.Create( + ([Description("The code to execute in the sandbox")] string code) => + { + var result = Execute(code); + return JsonSerializer.Serialize(new + { + stdout = result.Stdout, + stderr = result.Stderr, + exit_code = result.ExitCode, + success = result.Success, + }); + }, + name, + description); + } + + /// + /// Releases the sandbox and all associated resources. + /// + public void Dispose() + { + lock (_gate) + { + if (_disposed) + { + return; + } + + _disposed = true; + _snapshot?.Dispose(); + _sandbox.Dispose(); + } // lock + GC.SuppressFinalize(this); + } + + /// + /// Destructor β€” ensures the snapshot is freed if Dispose is not called. + /// The underlying has its own finalizer via + /// β€” we must NOT + /// call _sandbox.Dispose() here because it acquires a lock, which + /// is forbidden in finalizer context (deadlocks the finalizer thread). + /// + ~CodeExecutionTool() + { + // Only free what WE own. The sandbox cleans up via its own finalizer. + _snapshot?.Dispose(); + } +} diff --git a/src/sdk/dotnet/core/Extensions.AI/HyperlightSandbox.Extensions.AI.csproj b/src/sdk/dotnet/core/Extensions.AI/HyperlightSandbox.Extensions.AI.csproj new file mode 100644 index 0000000..e410b91 --- /dev/null +++ b/src/sdk/dotnet/core/Extensions.AI/HyperlightSandbox.Extensions.AI.csproj @@ -0,0 +1,31 @@ + + + + net8.0 + enable + enable + All + latest + true + HyperlightSandbox.Extensions.AI + + + Hyperlight.HyperlightSandbox.Extensions.AI + AI agent integration for hyperlight-sandbox. Provides CodeExecutionTool for use with GitHub Copilot SDK and Microsoft Agent Framework via AIFunction. + hyperlight;sandbox;ai;agent;copilot;tools;code-execution + Apache-2.0 + https://github.com/hyperlight-dev/hyperlight-sandbox + https://github.com/hyperlight-dev/hyperlight-sandbox + git + + + + + + + + + + + + diff --git a/src/sdk/dotnet/core/HyperlightSandbox.sln b/src/sdk/dotnet/core/HyperlightSandbox.sln new file mode 100644 index 0000000..6198542 --- /dev/null +++ b/src/sdk/dotnet/core/HyperlightSandbox.sln @@ -0,0 +1,89 @@ +ο»Ώ +Microsoft Visual Studio Solution File, Format Version 12.00 +# Visual Studio Version 17 +VisualStudioVersion = 17.0.31903.59 +MinimumVisualStudioVersion = 10.0.40219.1 +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "HyperlightSandbox.PInvoke", "PInvoke\HyperlightSandbox.PInvoke.csproj", "{011D2C0D-0097-4732-BE99-FA35A3A555B8}" +EndProject +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "HyperlightSandbox.Api", "Api\HyperlightSandbox.Api.csproj", "{93D06FFB-E756-4612-8595-423758B82634}" +EndProject +Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Tests", "Tests", "{CCAFAD77-D98E-4ED5-AE1E-DC51F450820A}" +EndProject +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "HyperlightSandbox.Tests", "Tests\HyperlightSandbox.Tests\HyperlightSandbox.Tests.csproj", "{DFE6FE52-64AE-4B99-9733-2E8C30CEFFA9}" +EndProject +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "HyperlightSandbox.Extensions.AI", "Extensions.AI\HyperlightSandbox.Extensions.AI.csproj", "{04AFD6B6-B65F-4FBD-9EF7-68898D11907F}" +EndProject +Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Examples", "Examples", "{8D99959A-5255-4BD9-BBF9-A8447698D515}" +EndProject +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BasicExample", "Examples\BasicExample\BasicExample.csproj", "{FE6854EE-0EE8-4A97-83EB-CCA003D45F16}" +EndProject +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ToolRegistrationExample", "Examples\ToolRegistrationExample\ToolRegistrationExample.csproj", "{51EAD1B1-DB94-42F9-BAE6-D8ABE92EE54E}" +EndProject +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FilesystemExample", "Examples\FilesystemExample\FilesystemExample.csproj", "{253145B6-369E-4A8F-85BC-929A3E76D253}" +EndProject +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NetworkExample", "Examples\NetworkExample\NetworkExample.csproj", "{90A70F16-B1AA-4EF9-8350-7235E5D7BF7E}" +EndProject +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SnapshotExample", "Examples\SnapshotExample\SnapshotExample.csproj", "{76CE5EB5-40AA-4DD0-AD93-2C6C69F6693F}" +EndProject +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Common", "Examples\Common\Common.csproj", "{C0CAC6B2-E6D6-4B92-B0A6-047304F08AD5}" +EndProject +Global + GlobalSection(SolutionConfigurationPlatforms) = preSolution + Debug|Any CPU = Debug|Any CPU + Release|Any CPU = Release|Any CPU + EndGlobalSection + GlobalSection(SolutionProperties) = 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0000000..cf94ba5 --- /dev/null +++ b/src/sdk/dotnet/core/PInvoke/Exceptions.cs @@ -0,0 +1,57 @@ +namespace HyperlightSandbox; + +/// +/// Base exception for sandbox-related errors. +/// +public class SandboxException : Exception +{ + public SandboxException() { } + public SandboxException(string message) : base(message) { } + public SandboxException(string message, Exception innerException) + : base(message, innerException) { } +} + +/// +/// Thrown when sandbox execution exceeds a time limit. +/// +public sealed class SandboxTimeoutException : SandboxException +{ + public SandboxTimeoutException() { } + public SandboxTimeoutException(string message) : base(message) { } + public SandboxTimeoutException(string message, Exception innerException) + : base(message, innerException) { } +} + +/// +/// Thrown when the sandbox is in a poisoned state (e.g., mutex poisoned, +/// guest crash). The sandbox must be recreated. +/// +public sealed class SandboxPoisonedException : SandboxException +{ + public SandboxPoisonedException() { } + public SandboxPoisonedException(string message) : base(message) { } + public SandboxPoisonedException(string message, Exception innerException) + : base(message, innerException) { } +} + +/// +/// Thrown when a network operation is denied by the sandbox's permission policy. +/// +public sealed class SandboxPermissionException : SandboxException +{ + public SandboxPermissionException() { } + public SandboxPermissionException(string message) : base(message) { } + public SandboxPermissionException(string message, Exception innerException) + : base(message, innerException) { } +} + +/// +/// Thrown when guest code raises an error during execution. +/// +public sealed class SandboxGuestException : SandboxException +{ + public SandboxGuestException() { } + public SandboxGuestException(string message) : base(message) { } + public SandboxGuestException(string message, Exception innerException) + : base(message, innerException) { } +} diff --git a/src/sdk/dotnet/core/PInvoke/FFIErrorCode.cs b/src/sdk/dotnet/core/PInvoke/FFIErrorCode.cs new file mode 100644 index 0000000..c2f1dae --- /dev/null +++ b/src/sdk/dotnet/core/PInvoke/FFIErrorCode.cs @@ -0,0 +1,36 @@ +namespace HyperlightSandbox.PInvoke; + +/// +/// Error classification codes returned by the FFI layer. +/// These map 1:1 to the Rust FFIErrorCode enum in +/// src/sdk/dotnet/ffi/src/lib.rs. +/// +/// Used by to map native errors +/// to specific .NET exception types. +/// +internal enum FFIErrorCode : uint +{ + /// No error. + Success = 0, + + /// Unclassified error. + Unknown = 1, + + /// Execution exceeded a time limit. + Timeout = 2, + + /// Sandbox state is poisoned (mutex or guest crash). + Poisoned = 3, + + /// Network permission denied. + PermissionDenied = 4, + + /// Guest code raised an error. + GuestError = 5, + + /// Invalid argument passed to FFI function. + InvalidArgument = 6, + + /// Filesystem I/O error. + IoError = 7, +} diff --git a/src/sdk/dotnet/core/PInvoke/FFIResult.cs b/src/sdk/dotnet/core/PInvoke/FFIResult.cs new file mode 100644 index 0000000..29ff008 --- /dev/null +++ b/src/sdk/dotnet/core/PInvoke/FFIResult.cs @@ -0,0 +1,90 @@ +using System.Runtime.InteropServices; + +namespace HyperlightSandbox.PInvoke; + +/// +/// Matches the Rust FFIResult struct layout exactly. +/// +/// On success: is_success = true, error_code = 0, +/// value may hold a pointer to an allocated string. +/// +/// On failure: is_success = false, error_code classifies +/// the failure, value holds a UTF-8 error message string. +/// +/// The caller is responsible for freeing value via +/// . +/// +[StructLayout(LayoutKind.Sequential)] +internal struct FFIResult +{ + [MarshalAs(UnmanagedType.I1)] + public bool is_success; + + public uint error_code; + + public IntPtr value; + + /// + /// Returns true if the operation succeeded. + /// + public readonly bool IsSuccess() => is_success; + + /// + /// Reads a UTF-8 string from , then frees the + /// native memory. Returns null if is + /// . + /// + /// + /// This consumes ownership of the pointer β€” the Rust side allocated it, + /// and we free it here. Do NOT call this twice on the same pointer. + /// + public static string? StringFromPtr(IntPtr ptr) + { + if (ptr == IntPtr.Zero) + { + return null; + } + + var str = Marshal.PtrToStringUTF8(ptr); + // The Rust FFI layer expects the caller to free this string. + SafeNativeMethods.hyperlight_sandbox_free_string(ptr); + return str; + } + + /// + /// If the operation failed, throws an appropriate exception. + /// If successful, does nothing. + /// + /// + /// Maps values to specific exception types + /// for structured error handling in the API layer. + /// + public void ThrowIfError() + { + if (is_success) + { + return; + } + + var errorMessage = StringFromPtr(value) ?? "Unknown error from native layer."; + var code = (FFIErrorCode)error_code; + + throw code switch + { + FFIErrorCode.Timeout => + new SandboxTimeoutException(errorMessage), + FFIErrorCode.Poisoned => + new SandboxPoisonedException(errorMessage), + FFIErrorCode.PermissionDenied => + new SandboxPermissionException(errorMessage), + FFIErrorCode.InvalidArgument => + new ArgumentException(errorMessage), + FFIErrorCode.IoError => + new System.IO.IOException(errorMessage), + FFIErrorCode.GuestError => + new SandboxGuestException(errorMessage), + _ => + new SandboxException($"Operation failed: {errorMessage}"), + }; + } +} diff --git a/src/sdk/dotnet/core/PInvoke/HyperlightSandbox.PInvoke.csproj b/src/sdk/dotnet/core/PInvoke/HyperlightSandbox.PInvoke.csproj new file mode 100644 index 0000000..e5de86f --- /dev/null +++ b/src/sdk/dotnet/core/PInvoke/HyperlightSandbox.PInvoke.csproj @@ -0,0 +1,71 @@ + + + + net8.0 + enable + enable + true + All + latest + true + HyperlightSandbox.PInvoke + + + Hyperlight.HyperlightSandbox.PInvoke + P/Invoke bindings for hyperlight-sandbox. Contains native library interop for secure sandboxed code execution. This package is typically consumed via HyperlightSandbox.Api. + hyperlight;sandbox;wasm;pinvoke;native;interop;security + Apache-2.0 + https://github.com/hyperlight-dev/hyperlight-sandbox + https://github.com/hyperlight-dev/hyperlight-sandbox + git + true + + + + + + + + + + debug + release + $([System.IO.Path]::GetFullPath('$(MSBuildThisFileDirectory)../../ffi')) + $([System.IO.Path]::GetFullPath('$(MSBuildThisFileDirectory)../../../../..')) + + + + + + + + + + + + + + true + runtimes/linux-x64/native/ + PreserveNewest + runtimes/linux-x64/native/libhyperlight_sandbox_dotnet_ffi.so + + + true + runtimes/win-x64/native/ + PreserveNewest + runtimes/win-x64/native/hyperlight_sandbox_dotnet_ffi.dll + + + + diff --git a/src/sdk/dotnet/core/PInvoke/SafeHandles.cs b/src/sdk/dotnet/core/PInvoke/SafeHandles.cs new file mode 100644 index 0000000..a14f5b0 --- /dev/null +++ b/src/sdk/dotnet/core/PInvoke/SafeHandles.cs @@ -0,0 +1,105 @@ +using System.Runtime.InteropServices; + +namespace HyperlightSandbox.PInvoke; + +/// +/// Manages the lifecycle of a native sandbox handle. +/// Ensures the underlying Rust SandboxState is properly freed +/// when no longer needed. +/// +/// +/// +/// The handle is created by +/// and freed by . +/// +/// +/// Ownership transfer: When a consuming operation invalidates this +/// handle (e.g., a hypothetical reload), call +/// immediately after the FFI call to prevent the finalizer from double-freeing. +/// Follow with on the owning object to prevent +/// premature finalization during the FFI call. +/// +/// +internal sealed class SandboxSafeHandle : SafeHandle +{ + public SandboxSafeHandle() : base(IntPtr.Zero, ownsHandle: true) { } + + public SandboxSafeHandle(IntPtr handle) : base(IntPtr.Zero, ownsHandle: true) + { + SetHandle(handle); + } + + /// + /// Marks this handle as invalid so the finalizer will not attempt to + /// free it. Used after a consuming FFI call has taken ownership. + /// + public void MakeHandleInvalid() + { + SetHandle(IntPtr.Zero); + SetHandleAsInvalid(); + } + + public override bool IsInvalid => handle == IntPtr.Zero; + + /// + /// Releases the native sandbox resource. + /// Uses to ensure exactly-once + /// semantics even if the GC finalizer and an explicit Dispose() + /// race. + /// + protected override bool ReleaseHandle() + { + IntPtr oldHandle = Interlocked.Exchange(ref handle, IntPtr.Zero); + if (oldHandle != IntPtr.Zero) + { + SafeNativeMethods.hyperlight_sandbox_free(oldHandle); + } + + return true; + } +} + +/// +/// Manages the lifecycle of a native snapshot handle. +/// Ensures the underlying Rust snapshot data is properly freed. +/// +/// +/// Snapshots can be reused multiple times for restore operations. +/// The snapshot is only freed when this handle is disposed or finalized. +/// +internal sealed class SnapshotSafeHandle : SafeHandle +{ + public SnapshotSafeHandle() : base(IntPtr.Zero, ownsHandle: true) { } + + public SnapshotSafeHandle(IntPtr handle) : base(IntPtr.Zero, ownsHandle: true) + { + SetHandle(handle); + } + + /// + /// Marks this handle as invalid so the finalizer will not attempt to + /// free it. + /// + public void MakeHandleInvalid() + { + SetHandle(IntPtr.Zero); + SetHandleAsInvalid(); + } + + public override bool IsInvalid => handle == IntPtr.Zero; + + /// + /// Releases the native snapshot resource. + /// Uses for race-free cleanup. + /// + protected override bool ReleaseHandle() + { + IntPtr oldHandle = Interlocked.Exchange(ref handle, IntPtr.Zero); + if (oldHandle != IntPtr.Zero) + { + SafeNativeMethods.hyperlight_sandbox_free_snapshot(oldHandle); + } + + return true; + } +} diff --git a/src/sdk/dotnet/core/PInvoke/SafeNativeMethods.cs b/src/sdk/dotnet/core/PInvoke/SafeNativeMethods.cs new file mode 100644 index 0000000..b15073a --- /dev/null +++ b/src/sdk/dotnet/core/PInvoke/SafeNativeMethods.cs @@ -0,0 +1,238 @@ +using System.Reflection; +using System.Runtime.CompilerServices; +using System.Runtime.InteropServices; + +namespace HyperlightSandbox.PInvoke; + +#pragma warning disable CA5392 // Use DefaultDllImportSearchPaths attribute for P/Invokes +// Justification: We use LibraryImport with a custom NativeLibrary.SetDllImportResolver. +// The resolver loads the library from the assembly directory or runtimes//native/, +// which is safer than default search paths. CA5392 is not applicable to custom resolvers. + +/// +/// P/Invoke declarations for the hyperlight_sandbox_ffi native library. +/// +/// Every function here maps 1:1 to an extern "C" function in +/// src/sdk/dotnet/ffi/src/lib.rs. +/// +/// +/// +/// String ownership: All string pointers returned in +/// are allocated by Rust and must be freed +/// via . Use +/// which handles this automatically. +/// +/// +/// Handle ownership: Handles returned by _create / +/// _snapshot are heap-allocated Rust Box values. They must +/// be freed exactly once via the corresponding _free function. +/// The and +/// classes handle this automatically via . +/// +/// +internal static partial class SafeNativeMethods +{ + private const string LibName = "hyperlight_sandbox_dotnet_ffi"; + + static SafeNativeMethods() + { + NativeLibrary.SetDllImportResolver( + typeof(SafeNativeMethods).Assembly, + DllImportResolver); + } + + /// + /// Resolves the native library path for the current platform. + /// Checks RID-specific paths first (for NuGet package layout), + /// then falls back to the assembly directory. + /// + private static IntPtr DllImportResolver( + string libraryName, + Assembly assembly, + DllImportSearchPath? searchPath) + { + if (libraryName != LibName) + { + return IntPtr.Zero; + } + + string assemblyDirectory = Path.GetDirectoryName(assembly.Location) ?? string.Empty; + + // Platform-specific library filename + string platformLibraryName = OperatingSystem.IsWindows() + ? $"{libraryName}.dll" + : $"lib{libraryName}.so"; + + // Check RID-specific path (NuGet package layout: runtimes//native/) + string rid = OperatingSystem.IsWindows() ? "win-x64" : "linux-x64"; + string runtimePath = Path.Join( + assemblyDirectory, "runtimes", rid, "native", platformLibraryName); + + if (File.Exists(runtimePath)) + { + return NativeLibrary.Load(runtimePath); + } + + // Check assembly directory directly (local development) + string localPath = Path.Join(assemblyDirectory, platformLibraryName); + if (File.Exists(localPath)) + { + return NativeLibrary.Load(localPath); + } + + // Check Rust target directory (development builds only) + // Guarded to prevent loading from unexpected locations in production. +#if DEBUG + string? dir = assemblyDirectory; + while (dir != null) + { + string cargoTarget = Path.Join(dir, "target", "debug", platformLibraryName); + if (File.Exists(cargoTarget)) + { + return NativeLibrary.Load(cargoTarget); + } + + string cargoTargetRelease = Path.Join(dir, "target", "release", platformLibraryName); + if (File.Exists(cargoTargetRelease)) + { + return NativeLibrary.Load(cargoTargetRelease); + } + + dir = Path.GetDirectoryName(dir); + } +#endif + + // Fallback to default resolution + return IntPtr.Zero; + } + + // ----------------------------------------------------------------------- + // Version + // ----------------------------------------------------------------------- + + /// Returns the FFI library version. Caller must free the result. + [LibraryImport(LibName)] + [UnmanagedCallConv(CallConvs = [typeof(CallConvCdecl)])] + internal static partial IntPtr hyperlight_sandbox_get_version(); + + // ----------------------------------------------------------------------- + // String management + // ----------------------------------------------------------------------- + + /// Frees a string allocated by the Rust FFI layer. + [LibraryImport(LibName)] + [UnmanagedCallConv(CallConvs = [typeof(CallConvCdecl)])] + internal static partial void hyperlight_sandbox_free_string(IntPtr s); + + // ----------------------------------------------------------------------- + // Sandbox lifecycle + // ----------------------------------------------------------------------- + + /// Creates a new sandbox instance (not yet initialized). + [LibraryImport(LibName)] + [UnmanagedCallConv(CallConvs = [typeof(CallConvCdecl)])] + internal static partial FFIResult hyperlight_sandbox_create( + FFISandboxOptions options); + + /// Frees a sandbox handle. Null is safe (no-op). + [LibraryImport(LibName)] + [UnmanagedCallConv(CallConvs = [typeof(CallConvCdecl)])] + internal static partial void hyperlight_sandbox_free(IntPtr handle); + + // ----------------------------------------------------------------------- + // Configuration (pre-run) + // ----------------------------------------------------------------------- + + /// Sets the read-only input directory. + [LibraryImport(LibName)] + [UnmanagedCallConv(CallConvs = [typeof(CallConvCdecl)])] + internal static partial FFIResult hyperlight_sandbox_set_input_dir( + SandboxSafeHandle handle, + [MarshalAs(UnmanagedType.LPUTF8Str)] string path); + + /// Sets the writable output directory. + [LibraryImport(LibName)] + [UnmanagedCallConv(CallConvs = [typeof(CallConvCdecl)])] + internal static partial FFIResult hyperlight_sandbox_set_output_dir( + SandboxSafeHandle handle, + [MarshalAs(UnmanagedType.LPUTF8Str)] string path); + + /// Enables/disables temporary output directory. + [LibraryImport(LibName)] + [UnmanagedCallConv(CallConvs = [typeof(CallConvCdecl)])] + internal static partial FFIResult hyperlight_sandbox_set_temp_output( + SandboxSafeHandle handle, + [MarshalAs(UnmanagedType.I1)] bool enabled); + + /// Adds a domain to the network allowlist. + [LibraryImport(LibName)] + [UnmanagedCallConv(CallConvs = [typeof(CallConvCdecl)])] + internal static partial FFIResult hyperlight_sandbox_allow_domain( + SandboxSafeHandle handle, + [MarshalAs(UnmanagedType.LPUTF8Str)] string target, + [MarshalAs(UnmanagedType.LPUTF8Str)] string? methodsJson); + + // ----------------------------------------------------------------------- + // Tool registration + // ----------------------------------------------------------------------- + + /// Registers a host-side tool callable from guest code. + [LibraryImport(LibName)] + [UnmanagedCallConv(CallConvs = [typeof(CallConvCdecl)])] + internal static partial FFIResult hyperlight_sandbox_register_tool( + SandboxSafeHandle handle, + [MarshalAs(UnmanagedType.LPUTF8Str)] string name, + [MarshalAs(UnmanagedType.LPUTF8Str)] string? schemaJson, + IntPtr callback); + + // ----------------------------------------------------------------------- + // Execution + // ----------------------------------------------------------------------- + + /// Executes guest code. Returns JSON ExecutionResult. + [LibraryImport(LibName)] + [UnmanagedCallConv(CallConvs = [typeof(CallConvCdecl)])] + internal static partial FFIResult hyperlight_sandbox_run( + SandboxSafeHandle handle, + [MarshalAs(UnmanagedType.LPUTF8Str)] string code); + + // ----------------------------------------------------------------------- + // Filesystem + // ----------------------------------------------------------------------- + + /// Returns output filenames as a JSON array. + [LibraryImport(LibName)] + [UnmanagedCallConv(CallConvs = [typeof(CallConvCdecl)])] + internal static partial FFIResult hyperlight_sandbox_get_output_files( + SandboxSafeHandle handle); + + /// Returns the host path of the output directory. + [LibraryImport(LibName)] + [UnmanagedCallConv(CallConvs = [typeof(CallConvCdecl)])] + internal static partial FFIResult hyperlight_sandbox_output_path( + SandboxSafeHandle handle); + + // ----------------------------------------------------------------------- + // Snapshot / Restore + // ----------------------------------------------------------------------- + + /// Takes a snapshot of the sandbox state. + [LibraryImport(LibName)] + [UnmanagedCallConv(CallConvs = [typeof(CallConvCdecl)])] + internal static partial FFIResult hyperlight_sandbox_snapshot( + SandboxSafeHandle handle); + + /// Restores the sandbox to a previous snapshot. + [LibraryImport(LibName)] + [UnmanagedCallConv(CallConvs = [typeof(CallConvCdecl)])] + internal static partial FFIResult hyperlight_sandbox_restore( + SandboxSafeHandle handle, + SnapshotSafeHandle snapshot); + + /// Frees a snapshot handle. Null is safe (no-op). + [LibraryImport(LibName)] + [UnmanagedCallConv(CallConvs = [typeof(CallConvCdecl)])] + internal static partial void hyperlight_sandbox_free_snapshot(IntPtr snapshot); +} + +#pragma warning restore CA5392 diff --git a/src/sdk/dotnet/core/PInvoke/SandboxOptions.cs b/src/sdk/dotnet/core/PInvoke/SandboxOptions.cs new file mode 100644 index 0000000..6d804d4 --- /dev/null +++ b/src/sdk/dotnet/core/PInvoke/SandboxOptions.cs @@ -0,0 +1,59 @@ +using System.Runtime.InteropServices; + +namespace HyperlightSandbox.PInvoke; + +/// +/// Configuration options for sandbox creation, matching the Rust +/// FFISandboxOptions struct layout. +/// +/// +/// Zero values for heap_size and stack_size mean +/// "use platform defaults" (25 MiB heap / 35 MiB stack on Linux, +/// 400 MiB / 200 MiB on Windows). +/// +[StructLayout(LayoutKind.Sequential)] +internal struct FFISandboxOptions : IEquatable +{ + /// + /// Pointer to the null-terminated UTF-8 module path string. + /// Required for Wasm, must be IntPtr.Zero for JavaScript. + /// + public IntPtr module_path; + + /// Guest heap size in bytes. 0 = platform default. + public ulong heap_size; + + /// Guest stack size in bytes. 0 = platform default. + public ulong stack_size; + + /// Backend type: 0 = Wasm, 1 = JavaScript. + public uint backend; + + public readonly bool Equals(FFISandboxOptions other) + { + return module_path == other.module_path + && heap_size == other.heap_size + && stack_size == other.stack_size + && backend == other.backend; + } + + public override readonly bool Equals(object? obj) + { + return obj is FFISandboxOptions other && Equals(other); + } + + public override readonly int GetHashCode() + { + return HashCode.Combine(module_path, heap_size, stack_size, backend); + } + + public static bool operator ==(FFISandboxOptions left, FFISandboxOptions right) + { + return left.Equals(right); + } + + public static bool operator !=(FFISandboxOptions left, FFISandboxOptions right) + { + return !left.Equals(right); + } +} diff --git a/src/sdk/dotnet/core/PInvoke/ToolCallbackDelegate.cs b/src/sdk/dotnet/core/PInvoke/ToolCallbackDelegate.cs new file mode 100644 index 0000000..7a38f2d --- /dev/null +++ b/src/sdk/dotnet/core/PInvoke/ToolCallbackDelegate.cs @@ -0,0 +1,42 @@ +using System.Runtime.InteropServices; + +namespace HyperlightSandbox.PInvoke; + +/// +/// Callback delegate invoked by the Rust FFI layer when guest code calls +/// call_tool(). +/// +/// The callback receives a JSON-encoded arguments string and must return +/// a JSON-encoded result string. +/// +/// +/// Pointer to a null-terminated UTF-8 JSON string containing the tool +/// arguments. Owned by the Rust caller β€” do NOT free this pointer. +/// +/// +/// Pointer to a null-terminated UTF-8 JSON string containing the result. +/// The pointer must be allocated with +/// and will be read then freed by the Rust side. +/// +/// On error, return a JSON object with an "error" field: +/// {"error": "description"}. +/// +/// Returning is treated as an error by the +/// Rust layer. +/// +/// +/// +/// Lifetime: The delegate instance passed to +/// MUST +/// be pinned via for the entire +/// lifetime of the sandbox. If the GC collects the delegate while Rust +/// holds the function pointer, calling it will cause a SIGSEGV. +/// +/// +/// The API layer (Sandbox.RegisterTool) handles pinning +/// automatically β€” end users should not interact with this delegate +/// directly. +/// +/// +[UnmanagedFunctionPointer(CallingConvention.Cdecl)] +internal unsafe delegate IntPtr ToolCallbackDelegate(IntPtr argsJson); diff --git a/src/sdk/dotnet/core/Tests/HyperlightSandbox.PackageTests/HyperlightSandbox.PackageTests.csproj b/src/sdk/dotnet/core/Tests/HyperlightSandbox.PackageTests/HyperlightSandbox.PackageTests.csproj new file mode 100644 index 0000000..255b257 --- /dev/null +++ b/src/sdk/dotnet/core/Tests/HyperlightSandbox.PackageTests/HyperlightSandbox.PackageTests.csproj @@ -0,0 +1,32 @@ + + + + net8.0 + enable + enable + All + latest + true + + false + true + + + $(MSBuildProjectDirectory)/nuget.config + + + + + + + runtime; build; native; contentfiles; analyzers; buildtransitive + all + + + + + + + + + diff --git a/src/sdk/dotnet/core/Tests/HyperlightSandbox.PackageTests/PackageInstallationTests.cs b/src/sdk/dotnet/core/Tests/HyperlightSandbox.PackageTests/PackageInstallationTests.cs new file mode 100644 index 0000000..cfddc0c --- /dev/null +++ b/src/sdk/dotnet/core/Tests/HyperlightSandbox.PackageTests/PackageInstallationTests.cs @@ -0,0 +1,84 @@ +using HyperlightSandbox.Api; +using Xunit; + +namespace HyperlightSandbox.PackageTests; + +/// +/// Validates that the NuGet packages can be installed and used. +/// These are smoke tests to verify correct packaging before publishing. +/// +/// Run via: just dotnet package-test +/// +[System.Diagnostics.CodeAnalysis.SuppressMessage("Design", "CA1515:Consider making public types internal", Justification = "Test classes must be public for xUnit")] +public class PackageInstallationTests +{ + /// + /// Verifies that the package can be installed, a sandbox created, + /// and basic operations work (API types resolve, FFI loads). + /// + [Fact] + public void Api_CanCreateSandboxBuilder() + { + // If this compiles and runs, the package is correctly installed + // and the API types are accessible. + var builder = new SandboxBuilder(); + Assert.NotNull(builder); + } + + [Fact] + public void Api_SandboxBackendEnum_HasExpectedValues() + { + Assert.Equal(0, (int)SandboxBackend.Wasm); + Assert.Equal(1, (int)SandboxBackend.JavaScript); + } + + [Fact] + public void Api_ExecutionResult_RecordWorks() + { + var result = new ExecutionResult("hello\n", "", 0); + Assert.True(result.Success); + Assert.Equal("hello\n", result.Stdout); + Assert.Equal(0, result.ExitCode); + } + + [Fact] + public void Api_SandboxBuilder_WithModulePath_RequiredForWasm() + { + var builder = new SandboxBuilder(); + Assert.Throws(() => builder.Build()); + } + + [Fact] + public void Api_ExceptionTypes_AreAccessible() + { + // Verify custom exception types are public and usable. + var ex1 = new SandboxException("test"); + var ex2 = new SandboxTimeoutException("test"); + var ex3 = new SandboxPoisonedException("test"); + var ex4 = new SandboxPermissionException("test"); + var ex5 = new SandboxGuestException("test"); + + Assert.IsAssignableFrom(ex2); + Assert.IsAssignableFrom(ex3); + Assert.IsAssignableFrom(ex4); + Assert.IsAssignableFrom(ex5); + Assert.IsAssignableFrom(ex1); + } + + /// + /// Verifies that the native FFI library loads correctly. + /// This test creates a sandbox with a nonexistent module β€” we're testing + /// that the P/Invoke layer initializes, not that execution works. + /// + [Fact] + public void PInvoke_NativeLibrary_LoadsAndCreatesHandle() + { + // This will create the native sandbox state (lazy init, + // so no module load until Run is called). + using var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/package-test-nonexistent.wasm") + .Build(); + + Assert.NotNull(sandbox); + } +} diff --git a/src/sdk/dotnet/core/Tests/HyperlightSandbox.PackageTests/nuget.config b/src/sdk/dotnet/core/Tests/HyperlightSandbox.PackageTests/nuget.config new file mode 100644 index 0000000..34be664 --- /dev/null +++ b/src/sdk/dotnet/core/Tests/HyperlightSandbox.PackageTests/nuget.config @@ -0,0 +1,11 @@ + + + + + + + + + + + diff --git a/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/CodeExecutionToolTests.cs b/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/CodeExecutionToolTests.cs new file mode 100644 index 0000000..d16fb4e --- /dev/null +++ b/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/CodeExecutionToolTests.cs @@ -0,0 +1,168 @@ +using HyperlightSandbox.Api; +using HyperlightSandbox.Extensions.AI; +using Xunit; + +namespace HyperlightSandbox.Tests; + +/// +/// Tests for β€” the AI agent integration wrapper. +/// Tests initialization, dispose, snapshot/restore-per-call, and AIFunction creation. +/// +[System.Diagnostics.CodeAnalysis.SuppressMessage("Design", "CA1515:Consider making public types internal", Justification = "Test classes must be public for xUnit")] +public class CodeExecutionToolTests +{ + private static SandboxBuilder TestBuilder() => + new SandboxBuilder().WithModulePath("/tmp/code-exec-tool-test.wasm"); + + // ----------------------------------------------------------------------- + // Construction and disposal + // ----------------------------------------------------------------------- + + [Fact] + public void Create_WithBuilder_Succeeds() + { + using var tool = new CodeExecutionTool(TestBuilder()); + Assert.NotNull(tool); + } + + [Fact] + public void Create_NullBuilder_ThrowsArgumentNullException() + { + Assert.Throws(() => + new CodeExecutionTool(null!)); + } + + [Fact] + public void Dispose_IsIdempotent() + { + var tool = new CodeExecutionTool(TestBuilder()); + tool.Dispose(); + tool.Dispose(); + tool.Dispose(); + } + + [Fact] + public void Execute_AfterDispose_ThrowsObjectDisposedException() + { + var tool = new CodeExecutionTool(TestBuilder()); + tool.Dispose(); + + Assert.Throws(() => + tool.Execute("print('hello')")); + } + + // ----------------------------------------------------------------------- + // Tool registration + // ----------------------------------------------------------------------- + + [Fact] + public void RegisterTool_RawJson_Succeeds() + { + using var tool = new CodeExecutionTool(TestBuilder()); + tool.RegisterTool("echo", (string json) => json); + } + + [Fact] + public void RegisterTool_Typed_Succeeds() + { + using var tool = new CodeExecutionTool(TestBuilder()); + tool.RegisterTool("add", args => args.a + args.b); + } + + [Fact] + public void RegisterTool_AfterDispose_ThrowsObjectDisposedException() + { + var tool = new CodeExecutionTool(TestBuilder()); + tool.Dispose(); + + Assert.Throws(() => + tool.RegisterTool("test", (string json) => "{}")); + } + + // ----------------------------------------------------------------------- + // AllowDomain + // ----------------------------------------------------------------------- + + [Fact] + public void AllowDomain_BeforeExecute_Succeeds() + { + using var tool = new CodeExecutionTool(TestBuilder()); + tool.AllowDomain("https://httpbin.org"); + tool.AllowDomain("https://example.com", ["GET", "POST"]); + } + + [Fact] + public void AllowDomain_AfterDispose_ThrowsObjectDisposedException() + { + var tool = new CodeExecutionTool(TestBuilder()); + tool.Dispose(); + + Assert.Throws(() => + tool.AllowDomain("https://example.com")); + } + + // ----------------------------------------------------------------------- + // AsAIFunction + // ----------------------------------------------------------------------- + + [Fact] + public void AsAIFunction_DefaultName_ReturnsExecuteCode() + { + using var tool = new CodeExecutionTool(TestBuilder()); + var fn = tool.AsAIFunction(); + + Assert.Equal("execute_code", fn.Name); + Assert.NotNull(fn.Description); + Assert.NotEmpty(fn.Description); + } + + [Fact] + public void AsAIFunction_CustomName_UsesIt() + { + using var tool = new CodeExecutionTool(TestBuilder()); + var fn = tool.AsAIFunction(name: "run_code", description: "Custom desc"); + + Assert.Equal("run_code", fn.Name); + Assert.Equal("Custom desc", fn.Description); + } + + [Fact] + public void AsAIFunction_AfterDispose_ThrowsObjectDisposedException() + { + var tool = new CodeExecutionTool(TestBuilder()); + tool.Dispose(); + + Assert.Throws(() => + tool.AsAIFunction()); + } + + // ----------------------------------------------------------------------- + // Thread safety + // ----------------------------------------------------------------------- + + [Fact] + public void ConcurrentAccess_DoesNotCrash() + + { + using var tool = new CodeExecutionTool(TestBuilder()); + tool.RegisterTool("test", (string json) => "{}"); + + // Multiple threads registering tools concurrently + var tasks = Enumerable.Range(0, 5).Select(i => + Task.Run(() => tool.AllowDomain($"https://example{i}.com")) + ).ToArray(); + + Task.WaitAll(tasks); + } + + // ----------------------------------------------------------------------- + // Helper types + // ----------------------------------------------------------------------- + + [System.Diagnostics.CodeAnalysis.SuppressMessage("Performance", "CA1812:Avoid uninstantiated internal classes", Justification = "Used as type parameter")] + private sealed class TestArgs + { + public double a { get; set; } + public double b { get; set; } + } +} diff --git a/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/HyperlightSandbox.Tests.csproj b/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/HyperlightSandbox.Tests.csproj new file mode 100644 index 0000000..158de17 --- /dev/null +++ b/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/HyperlightSandbox.Tests.csproj @@ -0,0 +1,34 @@ + + + + net8.0 + enable + enable + All + latest + true + + false + true + + + + + + + runtime; build; native; contentfiles; analyzers; buildtransitive + all + + + runtime; build; native; contentfiles; analyzers; buildtransitive + all + + + + + + + + + + diff --git a/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/IntegrationTests.cs b/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/IntegrationTests.cs new file mode 100644 index 0000000..70984d0 --- /dev/null +++ b/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/IntegrationTests.cs @@ -0,0 +1,370 @@ +using HyperlightSandbox.Api; +using Xunit; +using Xunit.Abstractions; + +namespace HyperlightSandbox.Tests; + +/// +/// Integration tests that execute real guest code through the full stack: +/// C# β†’ P/Invoke β†’ Rust FFI β†’ hyperlight-sandbox β†’ Wasm VM β†’ Guest. +/// +/// These tests require the Python guest module to be pre-built: +/// just wasm guest-build +/// +/// Tests are skipped if the guest module is not found (CI without guest build). +/// +[System.Diagnostics.CodeAnalysis.SuppressMessage("Design", "CA1515:Consider making public types internal", Justification = "Test classes must be public for xUnit")] +public class IntegrationTests +{ + private readonly ITestOutputHelper _output; + + public IntegrationTests(ITestOutputHelper output) + { + _output = output; + } + + /// + /// Finds the Python guest module by walking up to the repo root. + /// Returns null if not found (tests will be skipped). + /// + private static string? FindPythonGuest() + { + var dir = AppContext.BaseDirectory; + while (dir != null) + { + if (File.Exists(Path.Combine(dir, "Cargo.toml")) + && Directory.Exists(Path.Combine(dir, "src", "wasm_sandbox"))) + { + var path = Path.Combine(dir, + "src", "wasm_sandbox", "guests", "python", "python-sandbox.aot"); + return File.Exists(path) ? Path.GetFullPath(path) : null; + } + + dir = Path.GetDirectoryName(dir); + } + + return null; + } + + private Sandbox? TryCreateSandbox() + { + var guestPath = FindPythonGuest(); + if (guestPath == null) + { + _output.WriteLine("⚠️ Python guest not found β€” skipping integration test. Run 'just wasm guest-build' first."); + return null; + } + + return new SandboxBuilder() + .WithModulePath(guestPath) + .Build(); + } + + // ----------------------------------------------------------------------- + // Basic execution + // ----------------------------------------------------------------------- + + [Fact] + + public void Integration_BasicExecution_ReturnsStdout() + { + using var sandbox = TryCreateSandbox(); + if (sandbox == null) return; + + var result = sandbox.Run("print('hello from integration test')"); + + Assert.True(result.Success); + Assert.Equal(0, result.ExitCode); + Assert.Contains("hello from integration test", result.Stdout, StringComparison.Ordinal); + Assert.Empty(result.Stderr); + } + + [Fact] + public void Integration_MultipleRuns_AllSucceed() + { + using var sandbox = TryCreateSandbox(); + if (sandbox == null) return; + + for (int i = 0; i < 5; i++) + { + var result = sandbox.Run($"print('run {i}')"); + Assert.True(result.Success); + Assert.Contains($"run {i}", result.Stdout, StringComparison.Ordinal); + } + } + + [Fact] + public void Integration_Computation_ProducesCorrectResult() + { + using var sandbox = TryCreateSandbox(); + if (sandbox == null) return; + + var result = sandbox.Run(""" + import math + print(math.factorial(10)) + """); + + Assert.True(result.Success); + Assert.Contains("3628800", result.Stdout, StringComparison.Ordinal); + } + + // ----------------------------------------------------------------------- + // Tool dispatch (full stack) + // ----------------------------------------------------------------------- + + [Fact] + public void Integration_ToolDispatch_TypedTool_Works() + { + using var sandbox = TryCreateSandbox(); + if (sandbox == null) return; + + sandbox.RegisterTool("add", args => args.a + args.b); + + var result = sandbox.Run(""" + result = call_tool("add", a=100, b=42) + print(f"result={result}") + """); + + Assert.True(result.Success); + Assert.Contains("result=142", result.Stdout, StringComparison.Ordinal); + } + + [Fact] + public void Integration_ToolDispatch_RawJsonTool_Works() + { + using var sandbox = TryCreateSandbox(); + if (sandbox == null) return; + + sandbox.RegisterTool("greet", (string json) => + { + if (json.Contains("world", StringComparison.Ordinal)) + return """{"message": "Hello, World!"}"""; + return """{"message": "Hello, stranger!"}"""; + }); + + var result = sandbox.Run(""" + r = call_tool("greet", name="world") + print(r) + """); + + Assert.True(result.Success); + Assert.Contains("Hello", result.Stdout, StringComparison.Ordinal); + } + + [Fact] + public void Integration_ToolDispatch_MultipleTools_Works() + { + using var sandbox = TryCreateSandbox(); + if (sandbox == null) return; + + sandbox.RegisterTool("add", args => args.a + args.b); + sandbox.RegisterTool("multiply", args => args.a * args.b); + + var result = sandbox.Run(""" + sum = call_tool("add", a=3, b=4) + product = call_tool("multiply", a=6, b=7) + print(f"{sum} {product}") + """); + + Assert.True(result.Success); + Assert.Contains("7", result.Stdout, StringComparison.Ordinal); + Assert.Contains("42", result.Stdout, StringComparison.Ordinal); + } + + // ----------------------------------------------------------------------- + // Snapshot/Restore + // ----------------------------------------------------------------------- + + [Fact] + public void Integration_SnapshotRestore_ResetsState() + { + using var sandbox = TryCreateSandbox(); + if (sandbox == null) return; + + // Initialize and set a variable + var setResult = sandbox.Run("x = 'initial'"); + Assert.True(setResult.Success); + + // Snapshot captures current state + using var snapshot = sandbox.Snapshot(); + + // Modify state + sandbox.Run("x = 'modified'"); + + // Restore + sandbox.Restore(snapshot); + + // After restore, check what state we get back. + // The restored guest state should match the snapshot point. + var result = sandbox.Run(""" + try: + print(f"x={x}") + except NameError: + print("x=undefined") + """); + + Assert.True(result.Success); + // The snapshot/restore behaviour: state is rewound to snapshot point. + // x should either be 'initial' (if state preserved) or undefined + // (if runtime reset). Both are valid β€” the key is it's NOT 'modified'. + Assert.DoesNotContain("x=modified", result.Stdout); + } + + [Fact] + public void Integration_SnapshotReuse_WorksMultipleTimes() + { + using var sandbox = TryCreateSandbox(); + if (sandbox == null) return; + + // Initialize + sandbox.Run("pass"); + using var snapshot = sandbox.Snapshot(); + + for (int i = 0; i < 3; i++) + { + sandbox.Restore(snapshot); + var result = sandbox.Run($"print('iteration {i}')"); + Assert.True(result.Success, $"Iteration {i} failed: {result.Stderr}"); + Assert.Contains($"iteration {i}", result.Stdout, StringComparison.Ordinal); + } + } + + // ----------------------------------------------------------------------- + // Filesystem + // ----------------------------------------------------------------------- + + [Fact] + public void Integration_TempOutput_WritesAndLists() + { + var guestPath = FindPythonGuest(); + if (guestPath == null) return; + + using var sandbox = new SandboxBuilder() + .WithModulePath(guestPath) + .WithTempOutput() + .Build(); + + sandbox.Run(""" + with open("/output/test.txt", "w") as f: + f.write("hello from test") + """); + + var files = sandbox.GetOutputFiles(); + Assert.Contains("test.txt", files); + Assert.NotNull(sandbox.OutputPath); + } + + // ----------------------------------------------------------------------- + // Snapshot type mismatch (#19) + // ----------------------------------------------------------------------- + + // NOTE: Testing Wasm↔JS snapshot mismatch requires both backends to be + // initialized with real guest execution, which requires the hyperlight-js + // runtime. This test validates the error at the FFI level using the Rust + // test suite (test `snapshot_before_init_fails`). A full cross-backend + // test would need the JS runtime available. + + // ----------------------------------------------------------------------- + // Async + // ----------------------------------------------------------------------- + + [Fact] + public async Task Integration_RunAsync_WorksFromDifferentThread() + { + using var sandbox = TryCreateSandbox(); + if (sandbox == null) return; + + var result = await sandbox.RunAsync("print('async hello')").ConfigureAwait(false); + + Assert.True(result.Success); + Assert.Contains("async hello", result.Stdout, StringComparison.Ordinal); + } + + // ----------------------------------------------------------------------- + // Async tool dispatch + // ----------------------------------------------------------------------- + + [Fact] + public void Integration_ToolDispatch_AsyncTypedTool_Works() + { + using var sandbox = TryCreateSandbox(); + if (sandbox == null) return; + + // Register a tool with an async handler (e.g. simulating a DB/HTTP call). + sandbox.RegisterToolAsync("add_async", async args => + { + await Task.Delay(10).ConfigureAwait(false); // Simulate I/O + return args.a + args.b; + }); + + var result = sandbox.Run(""" + result = call_tool("add_async", a=50, b=25) + print(f"result={result}") + """); + + Assert.True(result.Success); + Assert.Contains("result=75", result.Stdout, StringComparison.Ordinal); + } + + [Fact] + public void Integration_ToolDispatch_AsyncRawJsonTool_Works() + { + using var sandbox = TryCreateSandbox(); + if (sandbox == null) return; + + // Register a raw JSON tool with an async handler. + sandbox.RegisterToolAsync("fetch_async", async (string json) => + { + await Task.Delay(10).ConfigureAwait(false); // Simulate I/O + return json.Contains("weather", StringComparison.Ordinal) + ? """{"data": "sunny"}""" + : """{"data": "unknown"}"""; + }); + + var result = sandbox.Run(""" + r = call_tool("fetch_async", key="weather") + print(r) + """); + + Assert.True(result.Success); + Assert.Contains("sunny", result.Stdout, StringComparison.Ordinal); + } + + [Fact] + public void Integration_ToolDispatch_MixedSyncAndAsyncTools_Works() + { + using var sandbox = TryCreateSandbox(); + if (sandbox == null) return; + + // Sync tool. + sandbox.RegisterTool("add", args => args.a + args.b); + + // Async tool. + sandbox.RegisterToolAsync("multiply_async", async args => + { + await Task.Delay(10).ConfigureAwait(false); + return args.a * args.b; + }); + + var result = sandbox.Run(""" + s = call_tool("add", a=3, b=4) + p = call_tool("multiply_async", a=6, b=7) + print(f"{s} {p}") + """); + + Assert.True(result.Success); + Assert.Contains("7", result.Stdout, StringComparison.Ordinal); + Assert.Contains("42", result.Stdout, StringComparison.Ordinal); + } + + // ----------------------------------------------------------------------- + // Helper types + // ----------------------------------------------------------------------- + + [System.Diagnostics.CodeAnalysis.SuppressMessage("Performance", "CA1812:Avoid uninstantiated internal classes", Justification = "Used by System.Text.Json")] + private sealed class AddArgs + { + public double a { get; set; } + public double b { get; set; } + } +} diff --git a/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/JavaScriptBackendTests.cs b/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/JavaScriptBackendTests.cs new file mode 100644 index 0000000..52b603d --- /dev/null +++ b/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/JavaScriptBackendTests.cs @@ -0,0 +1,151 @@ +using HyperlightSandbox.Api; +using Xunit; + +namespace HyperlightSandbox.Tests; + +/// +/// Tests for the JavaScript backend (SandboxBackend.JavaScript). +/// Validates that the builder, FFI create, and lifecycle all work +/// correctly for the JS backend path. +/// +[System.Diagnostics.CodeAnalysis.SuppressMessage("Design", "CA1515:Consider making public types internal", Justification = "Test classes must be public for xUnit")] +public class JavaScriptBackendTests +{ + // ----------------------------------------------------------------------- + // Builder validation + // ----------------------------------------------------------------------- + + [Fact] + public void WithBackend_JavaScript_NoModulePath_Succeeds() + { + using var sandbox = new SandboxBuilder() + .WithBackend(SandboxBackend.JavaScript) + .Build(); + + Assert.NotNull(sandbox); + } + + [Fact] + public void WithBackend_JavaScript_WithModulePath_ThrowsInvalidOperationException() + { + var builder = new SandboxBuilder() + .WithBackend(SandboxBackend.JavaScript) + .WithModulePath("/tmp/should-not-be-set.wasm"); + + Assert.Throws(() => builder.Build()); + } + + [Fact] + public void WithBackend_Wasm_WithoutModulePath_ThrowsInvalidOperationException() + { + var builder = new SandboxBuilder() + .WithBackend(SandboxBackend.Wasm); + + Assert.Throws(() => builder.Build()); + } + + [Fact] + public void WithBackend_Default_IsWasm() + { + // Default backend requires module path (Wasm) + var builder = new SandboxBuilder(); + Assert.Throws(() => builder.Build()); + } + + // ----------------------------------------------------------------------- + // Lifecycle + // ----------------------------------------------------------------------- + + [Fact] + public void JavaScript_CreateAndDispose_NoLeak() + { + for (int i = 0; i < 10; i++) + { + using var sandbox = new SandboxBuilder() + .WithBackend(SandboxBackend.JavaScript) + .Build(); + } + } + + [Fact] + public void JavaScript_Dispose_IsIdempotent() + { + var sandbox = new SandboxBuilder() + .WithBackend(SandboxBackend.JavaScript) + .Build(); + + sandbox.Dispose(); + sandbox.Dispose(); + sandbox.Dispose(); + } + + [Fact] + public void JavaScript_UseAfterDispose_ThrowsObjectDisposedException() + { + var sandbox = new SandboxBuilder() + .WithBackend(SandboxBackend.JavaScript) + .Build(); + sandbox.Dispose(); + + Assert.Throws(() => + sandbox.Run("console.log('hello');")); + } + + // ----------------------------------------------------------------------- + // Configuration + // ----------------------------------------------------------------------- + + [Fact] + public void JavaScript_AllowDomain_QueuesBeforeInit() + { + using var sandbox = new SandboxBuilder() + .WithBackend(SandboxBackend.JavaScript) + .Build(); + + // Should not throw β€” queued for lazy init + sandbox.AllowDomain("https://httpbin.org"); + } + + [Fact] + public void JavaScript_RegisterTool_Succeeds() + { + using var sandbox = new SandboxBuilder() + .WithBackend(SandboxBackend.JavaScript) + .Build(); + + sandbox.RegisterTool("echo", (string json) => json); + } + + [Fact] + public void JavaScript_WithTempOutput_Succeeds() + { + using var sandbox = new SandboxBuilder() + .WithBackend(SandboxBackend.JavaScript) + .WithTempOutput() + .Build(); + + Assert.NotNull(sandbox); + } + + [Fact] + public void JavaScript_WithInputDir_Succeeds() + { + using var sandbox = new SandboxBuilder() + .WithBackend(SandboxBackend.JavaScript) + .WithInputDir("/tmp") + .Build(); + + Assert.NotNull(sandbox); + } + + // ----------------------------------------------------------------------- + // Backend enum values + // ----------------------------------------------------------------------- + + [Fact] + public void SandboxBackend_Values_AreCorrect() + { + Assert.Equal(0, (int)SandboxBackend.Wasm); + Assert.Equal(1, (int)SandboxBackend.JavaScript); + } +} diff --git a/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/OwnershipTransferTests.cs b/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/OwnershipTransferTests.cs new file mode 100644 index 0000000..d91fefb --- /dev/null +++ b/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/OwnershipTransferTests.cs @@ -0,0 +1,370 @@ +using HyperlightSandbox.Api; +using Xunit; + +namespace HyperlightSandbox.Tests; + +/// +/// Tests for SafeHandle lifecycle, ownership transfers, GC interactions, +/// and ensuring no double-frees or use-after-free across the Rust ↔ .NET boundary. +/// +/// These are the MOST CRITICAL tests in the entire SDK β€” they validate +/// memory safety at the FFI boundary. +/// +[System.Diagnostics.CodeAnalysis.SuppressMessage("Design", "CA1515:Consider making public types internal", Justification = "Test classes must be public for xUnit")] +public class OwnershipTransferTests +{ + // ----------------------------------------------------------------------- + // 1. SafeHandle lifecycle: Create β†’ use β†’ Dispose β†’ no double-free + // ----------------------------------------------------------------------- + + [Fact] + public void SandboxHandle_Create_Dispose_NoCrash() + { + // A sandbox with a nonexistent module path β€” we're testing handle + // lifecycle, not execution. The create FFI call succeeds (lazy init). + var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test-lifecycle.wasm") + .Build(); + + // Dispose should free the native handle exactly once. + sandbox.Dispose(); + + // Second dispose should be a no-op (idempotent). + sandbox.Dispose(); + } + + [Fact] + public void SandboxHandle_UsingPattern_NoLeak() + { + // The using pattern should free the handle correctly. + using var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test-using.wasm") + .Build(); + } + + // ----------------------------------------------------------------------- + // 2. SafeHandle finalizer: abandon without Dispose β†’ GC cleans up + // ----------------------------------------------------------------------- + + [Fact] + public void SandboxHandle_Abandoned_FinalizerFreesCorrectly() + { + // Create a sandbox in a separate method so it goes out of scope. + CreateAndAbandonSandbox(); + + // Force GC to run finalizers. If the finalizer double-frees or + // accesses invalid memory, this will crash (SIGSEGV). + GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced, blocking: true); + GC.WaitForPendingFinalizers(); + GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced, blocking: true); + + // If we get here, the finalizer ran without crashing. + } + + private static void CreateAndAbandonSandbox() + { + // Intentionally NOT disposing β€” let the finalizer handle it. + _ = new SandboxBuilder() + .WithModulePath("/tmp/test-finalizer.wasm") + .Build(); + } + + // ----------------------------------------------------------------------- + // 3. Dispose + finalizer race (Interlocked.Exchange prevents double-free) + // ----------------------------------------------------------------------- + + [Fact] + public void SandboxHandle_DisposeAndFinalizerRace_NoDoubleFree() + { + for (int i = 0; i < 100; i++) + { + var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test-race.wasm") + .Build(); + + // Dispose on this thread... + sandbox.Dispose(); + + // ...while GC might finalize on another thread. + GC.Collect(); + GC.WaitForPendingFinalizers(); + } + + // 100 iterations without crash = Interlocked.Exchange works. + } + + // ----------------------------------------------------------------------- + // 4. Tool callback GCHandle pinning β€” delegates survive GC + // ----------------------------------------------------------------------- + + [Fact] + public void ToolCallback_PinnedDuringLifetime_SurvivesGC() + { + var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test-pin.wasm") + .Build(); + + // Register a tool β€” the delegate must be pinned. + sandbox.RegisterTool("test_tool", (string json) => + { + return """{"result": "ok"}"""; + }); + + // Force GC β€” if the delegate isn't pinned, the fn pointer becomes + // dangling and calling it from Rust would SIGSEGV. + GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced, blocking: true); + GC.WaitForPendingFinalizers(); + GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced, blocking: true); + + // The sandbox is still alive, and the pinned delegate should survive. + // We can't invoke the callback without a real module, but we verify + // no crash from GC. + + sandbox.Dispose(); // This should free the GCHandle. + } + + [Fact] + public void ToolCallback_MultiplePinned_AllFreedOnDispose() + { + var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test-multi-pin.wasm") + .Build(); + + // Register multiple tools. + for (int i = 0; i < 10; i++) + { + var toolNum = i; + sandbox.RegisterTool($"tool_{toolNum}", (string json) => + { + return $"{{\"tool\": {toolNum}}}"; + }); + } + + // Force GC aggressively. + GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced, blocking: true); + GC.WaitForPendingFinalizers(); + + // All 10 pinned delegates should survive. + // Dispose should free all 10 GCHandles. + sandbox.Dispose(); + + // Another GC should not crash (handles already freed). + GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced, blocking: true); + GC.WaitForPendingFinalizers(); + } + + // ----------------------------------------------------------------------- + // 5. Disposed object operations β†’ ObjectDisposedException (not SIGSEGV) + // ----------------------------------------------------------------------- + + [Fact] + public void Sandbox_RunAfterDispose_ThrowsObjectDisposedException() + { + var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test-disposed-run.wasm") + .Build(); + sandbox.Dispose(); + + Assert.Throws(() => + sandbox.Run("print('hello')")); + } + + [Fact] + public void Sandbox_RegisterToolAfterDispose_ThrowsObjectDisposedException() + { + var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test-disposed-tool.wasm") + .Build(); + sandbox.Dispose(); + + Assert.Throws(() => + sandbox.RegisterTool("test", (string json) => "{}")); + } + + [Fact] + public void Sandbox_AllowDomainAfterDispose_ThrowsObjectDisposedException() + { + var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test-disposed-domain.wasm") + .Build(); + sandbox.Dispose(); + + Assert.Throws(() => + sandbox.AllowDomain("https://example.com")); + } + + [Fact] + public void Sandbox_SnapshotAfterDispose_ThrowsObjectDisposedException() + { + var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test-disposed-snapshot.wasm") + .Build(); + sandbox.Dispose(); + + Assert.Throws(() => + sandbox.Snapshot()); + } + + [Fact] + public void Sandbox_GetOutputFilesAfterDispose_ThrowsObjectDisposedException() + { + var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test-disposed-files.wasm") + .Build(); + sandbox.Dispose(); + + Assert.Throws(() => + sandbox.GetOutputFiles()); + } + + [Fact] + public void Sandbox_OutputPathAfterDispose_ThrowsObjectDisposedException() + { + var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test-disposed-path.wasm") + .Build(); + sandbox.Dispose(); + + Assert.Throws(() => + _ = sandbox.OutputPath); + } + + // ----------------------------------------------------------------------- + // 6. Concurrent GC stress β€” operations with GC.Collect in background + // ----------------------------------------------------------------------- + + [Fact] + public void ConcurrentGCStress_NoDoubleFreeOrSIGSEGV() + { + // Run 50 create/dispose cycles while GC runs aggressively. + using var cts = new CancellationTokenSource(); + + // Background GC pressure thread. + var gcTask = Task.Run(() => + { + while (!cts.Token.IsCancellationRequested) + { + GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced, blocking: false); + Thread.Sleep(1); // Yield to other threads. + } + }); + + try + { + for (int i = 0; i < 50; i++) + { + var sandbox = new SandboxBuilder() + .WithModulePath($"/tmp/test-gc-stress-{i}.wasm") + .Build(); + + sandbox.RegisterTool("stress_tool", (string json) => "{}"); + sandbox.AllowDomain("https://example.com"); + + sandbox.Dispose(); + } + } + finally + { + cts.Cancel(); + gcTask.Wait(); + } + } + + // ----------------------------------------------------------------------- + // 7. Memory leak detection β€” repeated create/free loops + // ----------------------------------------------------------------------- + + [Fact] + public void MemoryLeak_RepeatedCreateDispose_NoGrowth() + { + // Warm up. + for (int i = 0; i < 10; i++) + { + using var s = new SandboxBuilder() + .WithModulePath("/tmp/test-warmup.wasm") + .Build(); + } + + ForceFullGC(); + var memBefore = GC.GetTotalMemory(forceFullCollection: false); + + const int iterations = 200; + for (int i = 0; i < iterations; i++) + { + using var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test-leak.wasm") + .Build(); + + sandbox.RegisterTool("leak_tool", (string json) => "{}"); + } + + ForceFullGC(); + var memAfter = GC.GetTotalMemory(forceFullCollection: false); + + var growth = memAfter - memBefore; + // Native sandbox handles + managed wrappers create some overhead per + // iteration. We're checking for unbounded growth, not zero growth. + // Anything under 500KB per iteration average is acceptable. + var maxGrowth = (long)iterations * 500_000; + Assert.True(growth < maxGrowth, + $"LEAK DETECTED: Memory grew by {growth:N0} bytes over {iterations} iterations " + + $"(max allowed: {maxGrowth:N0})"); + } + + [Fact] + public void MemoryLeak_AbandonedSandboxes_FinalizerCleansUp() + { + ForceFullGC(); + var memBefore = GC.GetTotalMemory(forceFullCollection: false); + + for (int i = 0; i < 100; i++) + { + // Intentionally NOT disposing β€” relying on finalizer. + _ = new SandboxBuilder() + .WithModulePath("/tmp/test-abandon-leak.wasm") + .Build(); + } + + // Force GC to run finalizers (multiple passes for generational GC). + ForceFullGC(); + ForceFullGC(); + + var memAfter = GC.GetTotalMemory(forceFullCollection: false); + var growth = memAfter - memBefore; + + Assert.True(growth < 200_000, + $"LEAK DETECTED: Abandoned sandboxes leaked {growth:N0} bytes"); + } + + // ----------------------------------------------------------------------- + // 8. Cross-thread access is safe (Send semantics β€” lock serializes) + // ----------------------------------------------------------------------- + + [Fact] + public async Task CrossThreadAccess_WithLock_IsSerializedSafely() + { + var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test-thread.wasm") + .Build(); + + // Access from a different thread should work (Send, not Sync). + // The internal lock prevents concurrent access. + await Task.Run(() => sandbox.AllowDomain("https://example.com")).ConfigureAwait(false); + + // Back on original thread β€” should also work. + sandbox.AllowDomain("https://another.com"); + + sandbox.Dispose(); + } + + // ----------------------------------------------------------------------- + // Helpers + // ----------------------------------------------------------------------- + + private static void ForceFullGC() + { + GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced, blocking: true, compacting: true); + GC.WaitForPendingFinalizers(); + GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced, blocking: true, compacting: true); + } +} diff --git a/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/PInvokeLayerTests.cs b/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/PInvokeLayerTests.cs new file mode 100644 index 0000000..6e45bb1 --- /dev/null +++ b/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/PInvokeLayerTests.cs @@ -0,0 +1,206 @@ +using System.Runtime.InteropServices; +using HyperlightSandbox.PInvoke; +using Xunit; + +namespace HyperlightSandbox.Tests; + +/// +/// Tests for the P/Invoke layer: FFIResult, FFIErrorCode, SafeNativeMethods, +/// and string ownership across the FFI boundary. +/// +[System.Diagnostics.CodeAnalysis.SuppressMessage("Design", "CA1515:Consider making public types internal", Justification = "Test classes must be public for xUnit")] +public class PInvokeLayerTests +{ + // ----------------------------------------------------------------------- + // FFIErrorCode values must be stable (ABI contract with Rust) + // ----------------------------------------------------------------------- + + [Theory] + [InlineData(0u, 0u)] // Success + [InlineData(1u, 1u)] // Unknown + [InlineData(2u, 2u)] // Timeout + [InlineData(3u, 3u)] // Poisoned + [InlineData(4u, 4u)] // PermissionDenied + [InlineData(5u, 5u)] // GuestError + [InlineData(6u, 6u)] // InvalidArgument + [InlineData(7u, 7u)] // IoError + public void FFIErrorCode_Values_MatchRust(uint codeValue, uint expected) + { + var code = (FFIErrorCode)codeValue; + Assert.Equal(expected, (uint)code); + } + + // ----------------------------------------------------------------------- + // FFIResult.ThrowIfError β€” maps codes to correct exception types + // ----------------------------------------------------------------------- + + [Fact] + public void FFIResult_Success_DoesNotThrow() + { + var result = new FFIResult + { + is_success = true, + error_code = (uint)FFIErrorCode.Success, + value = IntPtr.Zero, + }; + + // Should not throw. + result.ThrowIfError(); + } + + [Fact] + public void FFIResult_Timeout_ThrowsOperationCanceledException() + { + var msg = Marshal.StringToCoTaskMemUTF8("execution timed out"); + // We need to allocate via Rust's allocator, but for this unit test + // we test the mapping logic directly. The StringFromPtr will try to + // free via hyperlight_sandbox_free_string which expects Rust allocation. + // Instead, test the error code mapping without StringFromPtr. + + var result = new FFIResult + { + is_success = false, + error_code = (uint)FFIErrorCode.Timeout, + value = IntPtr.Zero, // null value = "Unknown error" message + }; + + Assert.Throws(() => result.ThrowIfError()); + } + + [Fact] + public void FFIResult_Poisoned_ThrowsSandboxPoisonedException() + { + var result = new FFIResult + { + is_success = false, + error_code = (uint)FFIErrorCode.Poisoned, + value = IntPtr.Zero, + }; + + Assert.Throws(() => result.ThrowIfError()); + } + + [Fact] + public void FFIResult_PermissionDenied_ThrowsSandboxPermissionException() + { + var result = new FFIResult + { + is_success = false, + error_code = (uint)FFIErrorCode.PermissionDenied, + value = IntPtr.Zero, + }; + + Assert.Throws(() => result.ThrowIfError()); + } + + [Fact] + public void FFIResult_InvalidArgument_ThrowsArgumentException() + { + var result = new FFIResult + { + is_success = false, + error_code = (uint)FFIErrorCode.InvalidArgument, + value = IntPtr.Zero, + }; + + Assert.Throws(() => result.ThrowIfError()); + } + + [Fact] + public void FFIResult_IoError_ThrowsIOException() + { + var result = new FFIResult + { + is_success = false, + error_code = (uint)FFIErrorCode.IoError, + value = IntPtr.Zero, + }; + + Assert.Throws(() => result.ThrowIfError()); + } + + [Fact] + public void FFIResult_GuestError_ThrowsSandboxGuestException() + { + var result = new FFIResult + { + is_success = false, + error_code = (uint)FFIErrorCode.GuestError, + value = IntPtr.Zero, + }; + + Assert.Throws(() => result.ThrowIfError()); + } + + [Fact] + public void FFIResult_Unknown_ThrowsSandboxException() + { + var result = new FFIResult + { + is_success = false, + error_code = (uint)FFIErrorCode.Unknown, + value = IntPtr.Zero, + }; + + Assert.Throws(() => result.ThrowIfError()); + } + + // ----------------------------------------------------------------------- + // String ownership: StringFromPtr + // ----------------------------------------------------------------------- + + [Fact] + public void StringFromPtr_NullReturnsNull() + { + var result = FFIResult.StringFromPtr(IntPtr.Zero); + Assert.Null(result); + } + + // ----------------------------------------------------------------------- + // Version API (end-to-end FFI call) + // ----------------------------------------------------------------------- + + [Fact] + public void GetVersion_ReturnsValidSemver() + { + var ptr = SafeNativeMethods.hyperlight_sandbox_get_version(); + Assert.NotEqual(IntPtr.Zero, ptr); + + var version = Marshal.PtrToStringUTF8(ptr); + SafeNativeMethods.hyperlight_sandbox_free_string(ptr); + + Assert.NotNull(version); + Assert.NotEmpty(version); + Assert.Contains('.', version); + } + + // ----------------------------------------------------------------------- + // Free string: null is safe + // ----------------------------------------------------------------------- + + [Fact] + public void FreeString_Null_DoesNotCrash() + { + SafeNativeMethods.hyperlight_sandbox_free_string(IntPtr.Zero); + } + + // ----------------------------------------------------------------------- + // Free snapshot: null is safe + // ----------------------------------------------------------------------- + + [Fact] + public void FreeSnapshot_Null_DoesNotCrash() + { + SafeNativeMethods.hyperlight_sandbox_free_snapshot(IntPtr.Zero); + } + + // ----------------------------------------------------------------------- + // Free sandbox: null is safe + // ----------------------------------------------------------------------- + + [Fact] + public void FreeSandbox_Null_DoesNotCrash() + { + SafeNativeMethods.hyperlight_sandbox_free(IntPtr.Zero); + } +} diff --git a/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/SandboxBuilderTests.cs b/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/SandboxBuilderTests.cs new file mode 100644 index 0000000..268c469 --- /dev/null +++ b/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/SandboxBuilderTests.cs @@ -0,0 +1,149 @@ +using HyperlightSandbox.Api; +using Xunit; + +namespace HyperlightSandbox.Tests; + +/// +/// Tests for configuration and validation. +/// +[System.Diagnostics.CodeAnalysis.SuppressMessage("Design", "CA1515:Consider making public types internal", Justification = "Test classes must be public for xUnit")] +public class SandboxBuilderTests +{ + [Fact] + public void Build_WithModulePath_CreatesSandbox() + { + using var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test.wasm") + .Build(); + + Assert.NotNull(sandbox); + } + + [Fact] + public void Build_WithoutModulePath_ThrowsInvalidOperationException() + { + var builder = new SandboxBuilder(); + Assert.Throws(() => builder.Build()); + } + + [Fact] + public void WithModulePath_NullOrEmpty_ThrowsArgumentException() + { + var builder = new SandboxBuilder(); + Assert.ThrowsAny(() => builder.WithModulePath(null!)); + Assert.ThrowsAny(() => builder.WithModulePath("")); + Assert.ThrowsAny(() => builder.WithModulePath(" ")); + } + + [Fact] + public void WithHeapSize_StringFormat_Parses() + { + using var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test.wasm") + .WithHeapSize("50Mi") + .Build(); + + Assert.NotNull(sandbox); + } + + [Fact] + public void WithHeapSize_ByteValue_Works() + { + using var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test.wasm") + .WithHeapSize(50UL * 1024 * 1024) + .Build(); + + Assert.NotNull(sandbox); + } + + [Fact] + public void WithStackSize_StringFormat_Parses() + { + using var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test.wasm") + .WithStackSize("10Mi") + .Build(); + + Assert.NotNull(sandbox); + } + + [Fact] + public void WithStackSize_ByteValue_Works() + { + using var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test.wasm") + .WithStackSize(10UL * 1024 * 1024) + .Build(); + + Assert.NotNull(sandbox); + } + + [Fact] + public void WithInputDir_ValidPath_Works() + { + using var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test.wasm") + .WithInputDir("/tmp/input") + .Build(); + + Assert.NotNull(sandbox); + } + + [Fact] + public void WithInputDir_NullOrEmpty_ThrowsArgumentException() + { + var builder = new SandboxBuilder(); + Assert.ThrowsAny(() => builder.WithInputDir(null!)); + Assert.ThrowsAny(() => builder.WithInputDir("")); + } + + [Fact] + public void WithOutputDir_ValidPath_Works() + { + using var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test.wasm") + .WithOutputDir("/tmp/output") + .Build(); + + Assert.NotNull(sandbox); + } + + [Fact] + public void WithTempOutput_Works() + { + using var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test.wasm") + .WithTempOutput() + .Build(); + + Assert.NotNull(sandbox); + } + + [Fact] + public void ChainedConfiguration_AllOptions_Works() + { + using var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test.wasm") + .WithHeapSize("100Mi") + .WithStackSize("50Mi") + .WithInputDir("/tmp/input") + .WithTempOutput() + .Build(); + + Assert.NotNull(sandbox); + } + + [Fact] + public void Builder_CanBeReused() + { + var builder = new SandboxBuilder() + .WithModulePath("/tmp/test.wasm"); + + using var sandbox1 = builder.Build(); + using var sandbox2 = builder.Build(); + + Assert.NotNull(sandbox1); + Assert.NotNull(sandbox2); + } +} diff --git a/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/SandboxLifecycleTests.cs b/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/SandboxLifecycleTests.cs new file mode 100644 index 0000000..84532ae --- /dev/null +++ b/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/SandboxLifecycleTests.cs @@ -0,0 +1,129 @@ +using HyperlightSandbox.Api; +using Xunit; + +namespace HyperlightSandbox.Tests; + +/// +/// Tests for sandbox lifecycle management β€” creation, disposal, idempotency, +/// and using pattern correctness. +/// +[System.Diagnostics.CodeAnalysis.SuppressMessage("Design", "CA1515:Consider making public types internal", Justification = "Test classes must be public for xUnit")] +public class SandboxLifecycleTests +{ + [Fact] + public void Sandbox_CanBeCreated() + { + using var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test.wasm") + .Build(); + + Assert.NotNull(sandbox); + } + + [Fact] + public void Sandbox_Dispose_IsIdempotent() + { + var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test.wasm") + .Build(); + + sandbox.Dispose(); + sandbox.Dispose(); // Second call should not throw or crash. + sandbox.Dispose(); // Third time's the charm. + } + + [Fact] + public void Sandbox_UsingStatement_DisposesCorrectly() + { + Sandbox? sandboxRef; + using (var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test.wasm") + .Build()) + { + sandboxRef = sandbox; + Assert.NotNull(sandboxRef); + } + + // After leaving using block, should be disposed. + Assert.Throws(() => + sandboxRef.AllowDomain("https://example.com")); + } + + [Fact] + public void Sandbox_AllowDomain_BeforeRun_Succeeds() + { + using var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test.wasm") + .Build(); + + // Should not throw β€” queued for lazy init. + sandbox.AllowDomain("https://httpbin.org"); + sandbox.AllowDomain("https://api.example.com", ["GET", "POST"]); + } + + [Fact] + public void Sandbox_AllowDomain_NullTarget_ThrowsArgumentException() + { + using var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test.wasm") + .Build(); + + Assert.ThrowsAny(() => + sandbox.AllowDomain(null!)); + } + + [Fact] + public void Sandbox_Run_NullCode_ThrowsArgumentException() + { + using var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test.wasm") + .Build(); + + Assert.ThrowsAny(() => + sandbox.Run(null!)); + } + + [Fact] + public void Sandbox_Run_EmptyCode_ThrowsArgumentException() + { + using var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test.wasm") + .Build(); + + Assert.ThrowsAny(() => + sandbox.Run("")); + } + + [Fact] + public void Sandbox_Run_ExceedsMaxCodeSize_ThrowsArgumentException() + { + using var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/test.wasm") + .Build(); + + var hugeCode = new string('x', Sandbox.MaxCodeSize + 1); + var ex = Assert.ThrowsAny(() => + sandbox.Run(hugeCode)); + + Assert.Contains("maximum size", ex.Message, StringComparison.OrdinalIgnoreCase); + } + + [Fact] + public void Sandbox_MaxCodeSize_Is10MiB() + { + Assert.Equal(10 * 1024 * 1024, Sandbox.MaxCodeSize); + } + + [Fact] + public void Sandbox_Run_NonexistentModule_ThrowsSandboxException() + { + using var sandbox = new SandboxBuilder() + .WithModulePath("/tmp/definitely-nonexistent-module-12345.wasm") + .Build(); + + // Should fail gracefully (not crash) because the module doesn't exist. + // The exact exception type depends on the FFI error classification. + Assert.ThrowsAny(() => + sandbox.Run("print('hello')")); + } +} diff --git a/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/SizeParserTests.cs b/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/SizeParserTests.cs new file mode 100644 index 0000000..7d0dfff --- /dev/null +++ b/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/SizeParserTests.cs @@ -0,0 +1,87 @@ +using HyperlightSandbox.Api; +using Xunit; + +namespace HyperlightSandbox.Tests; + +/// +/// Tests for . +/// +[System.Diagnostics.CodeAnalysis.SuppressMessage("Design", "CA1515:Consider making public types internal", Justification = "Test classes must be public for xUnit")] +public class SizeParserTests +{ + [Fact] + public void Parse_PlainBytes() + { + Assert.Equal(1024UL, SizeParser.Parse("1024")); + } + + [Fact] + public void Parse_Kibibytes() + { + Assert.Equal(10UL * 1024, SizeParser.Parse("10Ki")); + } + + [Fact] + public void Parse_Mebibytes() + { + Assert.Equal(25UL * 1024 * 1024, SizeParser.Parse("25Mi")); + } + + [Fact] + public void Parse_Gibibytes() + { + Assert.Equal(2UL * 1024 * 1024 * 1024, SizeParser.Parse("2Gi")); + } + + [Theory] + [InlineData(" 400Mi ")] + [InlineData("\t25Mi\t")] + public void Parse_WithWhitespace_TrimsCorrectly(string input) + { + Assert.True(SizeParser.Parse(input) > 0); + } + + [Fact] + public void Parse_LargeValue_WorksWithinBounds() + { + // 16 Gi β€” well within u64 range + Assert.Equal(16UL * 1024 * 1024 * 1024, SizeParser.Parse("16Gi")); + } + + [Theory] + [InlineData("")] + [InlineData(" ")] + [InlineData(null)] + public void Parse_NullOrEmpty_ThrowsArgumentException(string? input) + { + Assert.ThrowsAny(() => SizeParser.Parse(input!)); + } + + [Theory] + [InlineData("abcMi")] + [InlineData("Mi")] + [InlineData("notanumber")] + [InlineData("12.5Mi")] + public void Parse_InvalidNumber_ThrowsArgumentException(string input) + { + Assert.ThrowsAny(() => SizeParser.Parse(input)); + } + + [Fact] + public void Parse_Overflow_ThrowsOverflowException() + { + Assert.Throws(() => SizeParser.Parse("999999999999999999Gi")); + } + + [Fact] + public void Parse_Zero_ReturnsZero() + { + Assert.Equal(0UL, SizeParser.Parse("0")); + } + + [Fact] + public void Parse_ZeroWithSuffix_ReturnsZero() + { + Assert.Equal(0UL, SizeParser.Parse("0Mi")); + } +} diff --git a/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/ToolRegistrationTests.cs b/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/ToolRegistrationTests.cs new file mode 100644 index 0000000..8b13191 --- /dev/null +++ b/src/sdk/dotnet/core/Tests/HyperlightSandbox.Tests/ToolRegistrationTests.cs @@ -0,0 +1,195 @@ +using HyperlightSandbox.Api; +using Xunit; + +namespace HyperlightSandbox.Tests; + +/// +/// Tests for tool registration API β€” both raw JSON and typed variants. +/// Tests registration validation, schema generation, and error cases. +/// Full dispatch tests (calling tools from guest) require a real wasm module; +/// these tests validate the registration path and safety properties. +/// +[System.Diagnostics.CodeAnalysis.SuppressMessage("Design", "CA1515:Consider making public types internal", Justification = "Test classes must be public for xUnit")] +public class ToolRegistrationTests +{ + private static Sandbox CreateTestSandbox() => + new SandboxBuilder() + .WithModulePath("/tmp/test-tools.wasm") + .Build(); + + // ----------------------------------------------------------------------- + // Raw JSON tool registration + // ----------------------------------------------------------------------- + + [Fact] + public void RegisterTool_RawJson_Succeeds() + { + using var sandbox = CreateTestSandbox(); + sandbox.RegisterTool("echo", (string json) => json); + } + + [Fact] + public void RegisterTool_RawJson_NullName_ThrowsArgumentException() + { + using var sandbox = CreateTestSandbox(); + Assert.ThrowsAny(() => + sandbox.RegisterTool(null!, (string json) => "{}")); + } + + [Fact] + public void RegisterTool_RawJson_EmptyName_ThrowsArgumentException() + { + using var sandbox = CreateTestSandbox(); + Assert.ThrowsAny(() => + sandbox.RegisterTool("", (string json) => "{}")); + } + + [Fact] + public void RegisterTool_RawJson_NullHandler_ThrowsArgumentNullException() + { + using var sandbox = CreateTestSandbox(); + Assert.Throws(() => + sandbox.RegisterTool("test", (Func)null!)); + } + + // ----------------------------------------------------------------------- + // Typed tool registration + // ----------------------------------------------------------------------- + + private sealed class AddArgs + { + public double a { get; set; } + public double b { get; set; } + } + + private sealed class AddResult + { + public double sum { get; set; } + } + + [Fact] + public void RegisterTool_Typed_Succeeds() + { + using var sandbox = CreateTestSandbox(); + sandbox.RegisterTool("add", + args => new AddResult { sum = args.a + args.b }); + } + + [Fact] + public void RegisterTool_Typed_NullName_ThrowsArgumentException() + { + using var sandbox = CreateTestSandbox(); + Assert.ThrowsAny(() => + sandbox.RegisterTool(null!, + args => new AddResult { sum = 0 })); + } + + [Fact] + public void RegisterTool_Typed_NullHandler_ThrowsArgumentNullException() + { + using var sandbox = CreateTestSandbox(); + Assert.Throws(() => + sandbox.RegisterTool("add", null!)); + } + + // ----------------------------------------------------------------------- + // Multiple tool registration + // ----------------------------------------------------------------------- + + [Fact] + public void RegisterTool_MultipleDifferentNames_Succeeds() + { + using var sandbox = CreateTestSandbox(); + + sandbox.RegisterTool("tool1", (string json) => "{}"); + sandbox.RegisterTool("tool2", (string json) => "{}"); + sandbox.RegisterTool("tool3", (string json) => "{}"); + sandbox.RegisterTool("add", + args => new AddResult { sum = args.a + args.b }); + } + + // ----------------------------------------------------------------------- + // Registration after dispose + // ----------------------------------------------------------------------- + + [Fact] + public void RegisterTool_AfterDispose_ThrowsObjectDisposedException() + { + var sandbox = CreateTestSandbox(); + sandbox.Dispose(); + + Assert.Throws(() => + sandbox.RegisterTool("test", (string json) => "{}")); + } + + [Fact] + public void RegisterTool_Typed_AfterDispose_ThrowsObjectDisposedException() + { + var sandbox = CreateTestSandbox(); + sandbox.Dispose(); + + Assert.Throws(() => + sandbox.RegisterTool("add", + args => new AddResult { sum = 0 })); + } + + // ----------------------------------------------------------------------- + // Schema generation (ToolSchemaBuilder) + // ----------------------------------------------------------------------- + + [Fact] + public void ToolSchemaBuilder_NumericTypes_MapToNumber() + { + var schema = ToolSchemaBuilder.BuildSchema(); + Assert.Contains("\"Number\"", schema, StringComparison.Ordinal); + } + + [Fact] + public void ToolSchemaBuilder_StringType_MapsToString() + { + var schema = ToolSchemaBuilder.BuildSchema(); + Assert.Contains("\"String\"", schema, StringComparison.Ordinal); + } + + [Fact] + public void ToolSchemaBuilder_BoolType_MapsToBoolean() + { + var schema = ToolSchemaBuilder.BuildSchema(); + Assert.Contains("\"Boolean\"", schema, StringComparison.Ordinal); + } + + [Fact] + public void ToolSchemaBuilder_ComplexType_MapsToObject() + { + var schema = ToolSchemaBuilder.BuildSchema(); + Assert.Contains("\"Object\"", schema, StringComparison.Ordinal); + } + + [Fact] + public void ToolSchemaBuilder_ArrayType_MapsToArray() + { + var schema = ToolSchemaBuilder.BuildSchema(); + Assert.Contains("\"Array\"", schema, StringComparison.Ordinal); + } + + [Fact] + public void ToolSchemaBuilder_AllPropertiesRequired() + { + var schema = ToolSchemaBuilder.BuildSchema(); + Assert.Contains("\"a\"", schema, StringComparison.Ordinal); + Assert.Contains("\"b\"", schema, StringComparison.Ordinal); + Assert.Contains("required", schema, StringComparison.Ordinal); + } + + // Schema test helper types β€” instantiated by System.Text.Json reflection + [System.Diagnostics.CodeAnalysis.SuppressMessage("Performance", "CA1812:Avoid uninstantiated internal classes", Justification = "Used as type parameter for schema generation")] + private sealed class NumericArgs { public int Value { get; set; } } + [System.Diagnostics.CodeAnalysis.SuppressMessage("Performance", "CA1812:Avoid uninstantiated internal classes", Justification = "Used as type parameter for schema generation")] + private sealed class StringArgs { public string Name { get; set; } = ""; } + [System.Diagnostics.CodeAnalysis.SuppressMessage("Performance", "CA1812:Avoid uninstantiated internal classes", Justification = "Used as type parameter for schema generation")] + private sealed class BoolArgs { public bool Flag { get; set; } } + [System.Diagnostics.CodeAnalysis.SuppressMessage("Performance", "CA1812:Avoid uninstantiated internal classes", Justification = "Used as type parameter for schema generation")] + private sealed class ComplexArgs { public AddArgs Nested { get; set; } = new(); } + [System.Diagnostics.CodeAnalysis.SuppressMessage("Performance", "CA1812:Avoid uninstantiated internal classes", Justification = "Used as type parameter for schema generation")] + private sealed class ArrayArgs { public int[] Items { get; set; } = []; } +} diff --git a/src/sdk/dotnet/ffi/.cargo/config.toml b/src/sdk/dotnet/ffi/.cargo/config.toml new file mode 100644 index 0000000..18616d4 --- /dev/null +++ b/src/sdk/dotnet/ffi/.cargo/config.toml @@ -0,0 +1,2 @@ +[env] +WIT_WORLD = { value = "../../../../wasm_sandbox/wit/sandbox-world.wasm", relative = true } diff --git a/src/sdk/dotnet/ffi/Cargo.toml b/src/sdk/dotnet/ffi/Cargo.toml new file mode 100644 index 0000000..8e5655c --- /dev/null +++ b/src/sdk/dotnet/ffi/Cargo.toml @@ -0,0 +1,28 @@ +[package] +name = "hyperlight-sandbox-dotnet-ffi" +version.workspace = true +edition.workspace = true +rust-version.workspace = true +license.workspace = true +description = "C-compatible FFI layer for the hyperlight-sandbox .NET SDK" + +[lib] +# cdylib for the .NET P/Invoke shared library. +# rlib is also needed so `cargo test` can link the test harness. +crate-type = ["cdylib", "rlib"] + +[dependencies] +hyperlight-sandbox.workspace = true +hyperlight-wasm-sandbox.workspace = true +hyperlight-javascript-sandbox.workspace = true +anyhow = "1" +libc = "0.2" +log = "0.4" +serde_json = "1" + +[target.'cfg(windows)'.dependencies] +windows-sys = { version = "0.59", features = ["Win32_System_Com"] } + +[dev-dependencies] +hyperlight-sandbox = { workspace = true, features = ["test-utils"] } +tempfile = "3" diff --git a/src/sdk/dotnet/ffi/src/lib.rs b/src/sdk/dotnet/ffi/src/lib.rs new file mode 100644 index 0000000..4fd46e4 --- /dev/null +++ b/src/sdk/dotnet/ffi/src/lib.rs @@ -0,0 +1,2077 @@ +//! C-compatible FFI layer for the hyperlight-sandbox .NET SDK. +//! +//! This crate produces a shared library (`cdylib`) that the .NET P/Invoke layer +//! calls via `[LibraryImport]`. It wraps the Rust `Sandbox` API with +//! opaque handle-based lifecycle management and JSON-over-FFI for complex types. +//! +//! # Architecture +//! +//! ```text +//! .NET (C#) ──[P/Invoke]──► this crate (extern "C") ──► hyperlight-sandbox (Rust) +//! ``` +//! +//! # Safety +//! +//! All `extern "C"` functions are `unsafe` at the boundary. Every function +//! validates its pointer arguments before dereferencing. Handles created by +//! `_create` functions must be freed with the corresponding `_free` function. + +// FFI functions intentionally expose private types as opaque handles. +#![allow(private_interfaces)] + +use std::collections::HashMap; +use std::ffi::{CStr, CString, c_char}; + +use anyhow::Result; +use hyperlight_javascript_sandbox::HyperlightJs; +use hyperlight_sandbox::{ + DEFAULT_HEAP_SIZE, DEFAULT_STACK_SIZE, DirPerms, FilePerms, GuestSandbox, HttpMethod, Sandbox, + SandboxBuilder, SandboxConfig, ToolRegistry, ToolSchema, +}; +use hyperlight_wasm_sandbox::Wasm; +use log::{debug, error}; + +// --------------------------------------------------------------------------- +// FFI error codes β€” structured classification across the boundary. +// Mirrored as `FFIErrorCode` enum in C# (`PInvoke/FFIErrorCode.cs`). +// --------------------------------------------------------------------------- + +/// Error classification for FFI results. +/// +/// These codes let the .NET layer map errors to specific exception types +/// without fragile string matching (a lesson from PR #292). +#[repr(u32)] +#[derive(Debug, Clone, Copy, PartialEq, Eq)] +pub enum FFIErrorCode { + /// No error. + Success = 0, + /// Unclassified error. + Unknown = 1, + /// Execution exceeded a time limit. + Timeout = 2, + /// Sandbox state is poisoned (mutex or guest crash). + Poisoned = 3, + /// Network permission denied. + PermissionDenied = 4, + /// Guest code raised an error. + GuestError = 5, + /// Invalid argument passed to FFI function. + InvalidArgument = 6, + /// Filesystem I/O error. + IoError = 7, +} + +// --------------------------------------------------------------------------- +// FFI result type +// --------------------------------------------------------------------------- + +/// Result of an FFI operation. +/// +/// On success: `is_success = true`, `error_code = 0`, `value` may hold a +/// pointer to an allocated string (caller must free with +/// `hyperlight_sandbox_free_string`). +/// +/// On failure: `is_success = false`, `error_code` classifies the failure, +/// `value` holds a UTF-8 error message string (caller must free). +#[repr(C)] +#[derive(Debug)] +pub struct FFIResult { + pub is_success: bool, + pub error_code: u32, + pub value: *mut c_char, +} + +impl FFIResult { + fn success(value: *mut c_char) -> Self { + Self { + is_success: true, + error_code: FFIErrorCode::Success as u32, + value, + } + } + + fn success_null() -> Self { + Self::success(std::ptr::null_mut()) + } + + fn error(code: FFIErrorCode, message: CString) -> Self { + Self { + is_success: false, + error_code: code as u32, + value: message.into_raw(), + } + } +} + +// --------------------------------------------------------------------------- +// FFI options struct +// --------------------------------------------------------------------------- + +/// Configuration options for sandbox creation, passed by value from .NET. +/// +/// Zero values mean "use platform default". +#[repr(C)] +pub struct FFISandboxOptions { + /// Path to the `.wasm` or `.aot` guest module (UTF-8, null-terminated). + /// Required for Wasm backend. Must be null for JavaScript backend. + pub module_path: *const c_char, + /// Guest heap size in bytes. 0 = platform default. + pub heap_size: u64, + /// Guest stack size in bytes. 0 = platform default. + pub stack_size: u64, + /// Backend type: 0 = Wasm (default), 1 = JavaScript. + pub backend: u32, +} + +/// Backend type discriminant. +/// +/// Mirrored as `SandboxBackend` enum in C#. +#[repr(u32)] +#[derive(Debug, Clone, Copy, PartialEq, Eq)] +pub enum FFIBackend { + /// WebAssembly component backend (Python, JS-via-Wasm, etc.). + Wasm = 0, + /// Hyperlight-JS built-in JavaScript backend (no module path needed). + JavaScript = 1, +} + +// --------------------------------------------------------------------------- +// Tool callback type +// --------------------------------------------------------------------------- + +/// Signature for tool callback function pointers passed from .NET. +/// +/// The callback receives a JSON-encoded arguments string and must return a +/// JSON-encoded result string. The returned pointer must have been allocated +/// with `Marshal.StringToCoTaskMemUTF8` (which uses `malloc` on Linux, +/// `CoTaskMemAlloc` on Windows). The Rust side copies the string and then +/// frees the pointer via `libc::free`. +/// +/// If the tool encounters an error, it should return a JSON object with an +/// `"error"` field: `{"error": "description"}`. +pub type ToolCallbackFn = unsafe extern "C" fn(args_json: *const c_char) -> *mut c_char; + +// --------------------------------------------------------------------------- +// Internal state +// --------------------------------------------------------------------------- + +/// Type aliases for the concrete sandbox types. +type WasmSandboxInner = Sandbox; +type WasmSnapshotInner = hyperlight_sandbox::Snapshot< + <::Sandbox as GuestSandbox>::SnapshotData, +>; + +type JsSandboxInner = Sandbox; +type JsSnapshotInner = hyperlight_sandbox::Snapshot< + <::Sandbox as GuestSandbox>::SnapshotData, +>; + +/// Holds the active backend sandbox instance. +enum BackendSandbox { + Wasm(WasmSandboxInner), + Js(JsSandboxInner), +} + +/// Holds a snapshot from either backend. +enum BackendSnapshot { + Wasm(WasmSnapshotInner), + Js(JsSnapshotInner), +} + +/// Dispatch on the active backend, binding the inner sandbox to `$sb`. +/// Both arms execute the same expression, avoiding code duplication. +macro_rules! with_sandbox { + ($backend:expr, $sb:ident => $body:expr) => { + match $backend { + BackendSandbox::Wasm($sb) => $body, + BackendSandbox::Js($sb) => $body, + } + }; +} + +/// Entry for a registered tool: the callback function pointer and optional schema. +struct ToolEntry { + callback: ToolCallbackFn, + schema_json: Option, +} + +/// Internal state behind an opaque FFI handle. +/// +/// Mirrors the Python SDK's lazy-init pattern: configuration and tools are +/// collected eagerly, and the actual sandbox is built on the first `run()`. +struct SandboxState { + /// The lazily-built sandbox instance. + inner: Option, + /// Which backend to use. + backend: FFIBackend, + /// Tool callbacks registered before the first `run()`. + tools: HashMap, + /// Network allowlist entries queued before the sandbox is built. + pending_networks: Vec<(String, Option>)>, + /// Sandbox configuration. + config: SandboxConfig, + /// Optional read-only input directory path. + input_dir: Option, + /// Optional writable output directory path. + output_dir: Option, + /// Whether to use a temporary output directory. + temp_output: bool, +} + +// --------------------------------------------------------------------------- +// Helpers +// --------------------------------------------------------------------------- + +/// A guaranteed safe C-string literal for fatal fallback. +/// No trailing null β€” `CString::from_vec_unchecked` adds one. +const FALLBACK_ERROR_MSG: &[u8] = b"FATAL: Could not create any error message."; + +/// Create a `CString` from arbitrary bytes, sanitizing embedded null bytes. +/// +/// If the input contains null bytes, they are replaced with spaces and a +/// warning is prepended. +fn safe_cstring>>(t: T) -> CString { + let bytes: Vec = t.into(); + match CString::new(bytes.clone()) { + Ok(c_string) => c_string, + Err(e) => { + let s = String::from_utf8_lossy(&bytes); + error!("Failed to create CString: {}. Original string: '{}'", e, s); + let sanitized: String = s.chars().map(|c| if c == '\0' { ' ' } else { c }).collect(); + let error_message = format!( + "WARNING: Original error message contained null characters \ + which were replaced with spaces. Message: {}", + sanitized + ); + CString::new(error_message).unwrap_or_else(|_| { + error!("FATAL: Could not create any error message after sanitization attempt."); + // SAFETY: FALLBACK_ERROR_MSG is a compile-time constant with a trailing null. + unsafe { CString::from_vec_unchecked(FALLBACK_ERROR_MSG.to_vec()) } + }) + } + } +} + +/// Classify an `anyhow::Error` into an `FFIErrorCode`. +/// +/// Uses `downcast_ref` for concrete types where possible, falling back +/// to string matching for untyped `anyhow` errors. +fn classify_error(err: &anyhow::Error) -> FFIErrorCode { + // Try concrete type downcasts first (more reliable than string matching). + if err.downcast_ref::>().is_some() { + return FFIErrorCode::Poisoned; + } + if err.downcast_ref::().is_some() { + return FFIErrorCode::IoError; + } + + // Fall back to string matching for errors we can't downcast. + let msg = err.to_string().to_lowercase(); + if msg.contains("poisoned") || msg.contains("mutex") { + FFIErrorCode::Poisoned + } else if msg.contains("timeout") + || msg.contains("cancelled") + || msg.contains("canceled") + || msg.contains("timed out") + || msg.contains("deadline") + { + FFIErrorCode::Timeout + } else if msg.contains("permission") || msg.contains("not allowed") || msg.contains("denied") { + FFIErrorCode::PermissionDenied + } else if msg.contains("i/o error") || msg.contains("no such file or directory") { + FFIErrorCode::IoError + } else { + FFIErrorCode::Unknown + } +} + +/// Convert an `anyhow::Error` into an `FFIResult`. +fn error_result(err: anyhow::Error) -> FFIResult { + let code = classify_error(&err); + let message = safe_cstring(format!("{err:#}")); + error!("FFI error (code={code:?}): {err:#}"); + FFIResult::error(code, message) +} + +/// Read a C string pointer into a Rust `&str`, returning an `FFIResult` on failure. +/// +/// # Safety +/// +/// The caller must ensure `ptr` is a valid, null-terminated UTF-8 string. +unsafe fn read_cstr<'a>(ptr: *const c_char, param_name: &str) -> Result<&'a str, FFIResult> { + if ptr.is_null() { + return Err(FFIResult::error( + FFIErrorCode::InvalidArgument, + safe_cstring(format!("Null pointer passed for {param_name}")), + )); + } + let cstr = unsafe { CStr::from_ptr(ptr) }; + cstr.to_str().map_err(|e| { + FFIResult::error( + FFIErrorCode::InvalidArgument, + safe_cstring(format!("Invalid UTF-8 for {param_name}: {e}")), + ) + }) +} + +/// Validate a mutable handle pointer and return a mutable reference. +/// +/// Combines the null check and dereference into a single operation so that +/// the resulting reference is always backed by a validated pointer. +/// +/// # Safety +/// +/// The caller must ensure `handle` points to a live, properly-aligned +/// allocation of type `T` (i.e. was returned by `Box::into_raw`). +unsafe fn deref_handle_mut<'a, T>(handle: *mut T, name: &str) -> Result<&'a mut T, FFIResult> { + if handle.is_null() { + return Err(FFIResult::error( + FFIErrorCode::InvalidArgument, + safe_cstring(format!("Null pointer passed for {name}")), + )); + } + Ok(unsafe { &mut *handle }) +} + +/// Validate an immutable handle pointer and return a shared reference. +/// +/// # Safety +/// +/// The caller must ensure `handle` points to a live, properly-aligned +/// allocation of type `T`. +unsafe fn deref_handle<'a, T>(handle: *const T, name: &str) -> Result<&'a T, FFIResult> { + if handle.is_null() { + return Err(FFIResult::error( + FFIErrorCode::InvalidArgument, + safe_cstring(format!("Null pointer passed for {name}")), + )); + } + Ok(unsafe { &*handle }) +} + +/// Build the `ToolRegistry` from the collected tool entries. +/// +/// Each tool callback is wrapped in a closure that: +/// 1. Serializes the `serde_json::Value` args to a JSON string +/// 2. Calls the .NET function pointer with the JSON +/// 3. Reads the returned JSON string +/// 4. Deserializes the result back to `serde_json::Value` +fn build_tool_registry(tools: &HashMap) -> Result { + let mut registry = ToolRegistry::new(); + + for (name, entry) in tools { + let callback = entry.callback; + let tool_name = name.clone(); + + // Parse schema if provided. + let schema = if let Some(ref schema_json) = entry.schema_json { + Some( + parse_tool_schema(schema_json) + .map_err(|e| anyhow::anyhow!("tool '{tool_name}': invalid schema: {e}"))?, + ) + } else { + None + }; + + // Wrap the .NET callback in a Rust closure. + // + // SAFETY: The function pointer `callback` is valid for the lifetime of + // the .NET GCHandle that pins the delegate. The .NET side must ensure + // the delegate is not collected while the sandbox is alive. + let handler = move |args: serde_json::Value| -> Result { + let args_str = serde_json::to_string(&args)?; + let args_cstr = CString::new(args_str) + .map_err(|e| anyhow::anyhow!("tool '{tool_name}': args contain null byte: {e}"))?; + + let result_ptr = unsafe { callback(args_cstr.as_ptr()) }; + + if result_ptr.is_null() { + anyhow::bail!("tool '{tool_name}': callback returned null"); + } + + // Read and copy the result string, then free the .NET-allocated memory. + // SAFETY: The .NET side guarantees the pointer is a valid, null-terminated + // UTF-8 string allocated with Marshal.StringToCoTaskMemUTF8. + let result_cstr = unsafe { CStr::from_ptr(result_ptr) }; + let result_str = result_cstr.to_str().map_err(|e| { + anyhow::anyhow!("tool '{tool_name}': callback returned invalid UTF-8: {e}") + })?; + + // Copy the string before freeing the .NET-allocated memory. + let result_owned = result_str.to_owned(); + + // Free the .NET-allocated string. + // On Linux, Marshal.StringToCoTaskMemUTF8 uses malloc β†’ free with libc::free. + // On Windows, it uses CoTaskMemAlloc β†’ free with CoTaskMemFree. + #[cfg(not(windows))] + unsafe { + libc::free(result_ptr as *mut libc::c_void) + }; + #[cfg(windows)] + unsafe { + windows_sys::Win32::System::Com::CoTaskMemFree(result_ptr as *mut std::ffi::c_void) + }; + + // Check for error convention: {"error": "..."} + let value: serde_json::Value = serde_json::from_str(&result_owned).map_err(|e| { + anyhow::anyhow!("tool '{tool_name}': callback returned invalid JSON: {e}") + })?; + + if let Some(err_msg) = value.get("error").and_then(|v| v.as_str()) { + anyhow::bail!("tool '{tool_name}': {err_msg}"); + } + + Ok(value) + }; + + registry.register_with_schema(name, schema, handler); + } + + Ok(registry) +} + +/// Parse a JSON schema string into a `ToolSchema`. +/// +/// Expected format: +/// ```json +/// { +/// "args": { "a": "Number", "b": "String" }, +/// "required": ["a"] +/// } +/// ``` +fn parse_tool_schema(json: &str) -> Result { + let parsed: serde_json::Value = serde_json::from_str(json)?; + let mut schema = ToolSchema::new(); + + if let Some(args) = parsed.get("args").and_then(|v| v.as_object()) { + for (name, type_val) in args { + let type_str = type_val + .as_str() + .ok_or_else(|| anyhow::anyhow!("schema arg '{name}': type must be a string"))?; + let arg_type = match type_str.to_lowercase().as_str() { + "number" => hyperlight_sandbox::ArgType::Number, + "string" => hyperlight_sandbox::ArgType::String, + "boolean" | "bool" => hyperlight_sandbox::ArgType::Boolean, + "object" => hyperlight_sandbox::ArgType::Object, + "array" => hyperlight_sandbox::ArgType::Array, + other => anyhow::bail!("schema arg '{name}': unknown type '{other}'"), + }; + schema = schema.optional_arg(name, arg_type); + } + } + + if let Some(required) = parsed.get("required").and_then(|v| v.as_array()) { + for req in required { + let name = req + .as_str() + .ok_or_else(|| anyhow::anyhow!("schema 'required': entries must be strings"))?; + // If the arg was already added as optional, promote it to required. + // If not in the args map, add it as required-untyped. + if schema.properties.contains_key(name) { + schema.required.push(name.to_string()); + } else { + schema = schema.required_untyped(name); + } + } + } + + Ok(schema) +} + +/// Parse a human-readable size string (e.g. `"200Mi"`) to bytes. +/// +/// Used by the .NET `SizeParser` for consistency, and tested below. +#[allow(dead_code)] +fn parse_size(size: &str) -> Result { + let size = size.trim(); + let (value, multiplier) = if let Some(value) = size.strip_suffix("Gi") { + (value, 1024u64.pow(3)) + } else if let Some(value) = size.strip_suffix("Mi") { + (value, 1024u64.pow(2)) + } else if let Some(value) = size.strip_suffix("Ki") { + (value, 1024u64) + } else { + (size, 1) + }; + let parsed: u64 = value + .parse() + .map_err(|e| anyhow::anyhow!("invalid size '{size}': {e}"))?; + parsed + .checked_mul(multiplier) + .ok_or_else(|| anyhow::anyhow!("invalid size '{size}': value is too large")) +} + +// =========================================================================== +// PUBLIC FFI FUNCTIONS +// =========================================================================== + +// --------------------------------------------------------------------------- +// Version +// --------------------------------------------------------------------------- + +/// Returns the version of the hyperlight-sandbox FFI library. +/// +/// The caller must free the returned string with `hyperlight_sandbox_free_string`. +#[unsafe(no_mangle)] +pub extern "C" fn hyperlight_sandbox_get_version() -> *mut c_char { + safe_cstring(env!("CARGO_PKG_VERSION")).into_raw() +} + +// --------------------------------------------------------------------------- +// String management +// --------------------------------------------------------------------------- + +/// Frees a string previously returned by an `hyperlight_sandbox_*` function. +/// +/// # Safety +/// +/// The pointer must have been returned by this library and not already freed. +/// Passing null is safe (no-op). +#[unsafe(no_mangle)] +pub unsafe extern "C" fn hyperlight_sandbox_free_string(s: *mut c_char) { + if !s.is_null() { + unsafe { + let _ = CString::from_raw(s); + } + } +} + +// --------------------------------------------------------------------------- +// Sandbox lifecycle +// --------------------------------------------------------------------------- + +/// Creates a new sandbox instance. +/// +/// The sandbox is not fully initialized until the first `run()` call β€” tools +/// and configuration can be set between `create` and `run`. +/// +/// # Arguments +/// +/// * `options` β€” Configuration struct. `module_path` must point to a valid +/// `.wasm` or `.aot` file. Zero values for `heap_size` / `stack_size` use +/// platform defaults. +/// +/// # Returns +/// +/// On success: `is_success = true`, `value` is an opaque handle to the sandbox. +/// On failure: `is_success = false`, `value` is an error message. +/// +/// The handle must be freed with `hyperlight_sandbox_free`. +/// +/// # Safety +/// +/// `options.module_path` must be a valid, null-terminated UTF-8 string pointing +/// to a `.wasm` or `.aot` file. The caller owns the string memory. +#[unsafe(no_mangle)] +pub unsafe extern "C" fn hyperlight_sandbox_create(options: FFISandboxOptions) -> FFIResult { + // Parse backend type. + let backend = match options.backend { + 0 => FFIBackend::Wasm, + 1 => FFIBackend::JavaScript, + other => { + return FFIResult::error( + FFIErrorCode::InvalidArgument, + safe_cstring(format!( + "Invalid backend value: {other}. Use 0 (Wasm) or 1 (JavaScript)." + )), + ); + } + }; + + // Parse module path β€” required for Wasm, must be null/empty for JS. + let module_path = if options.module_path.is_null() { + String::new() + } else { + match unsafe { read_cstr(options.module_path, "module_path") } { + Ok(s) => s.to_owned(), + Err(e) => return e, + } + }; + + match backend { + FFIBackend::Wasm if module_path.is_empty() => { + return FFIResult::error( + FFIErrorCode::InvalidArgument, + safe_cstring("module_path is required for Wasm backend"), + ); + } + FFIBackend::JavaScript if !module_path.is_empty() => { + return FFIResult::error( + FFIErrorCode::InvalidArgument, + safe_cstring( + "module_path must not be set for JavaScript backend (it has a built-in runtime)", + ), + ); + } + _ => {} + } + + let heap_size = if options.heap_size > 0 { + options.heap_size + } else { + DEFAULT_HEAP_SIZE + }; + + let stack_size = if options.stack_size > 0 { + options.stack_size + } else { + DEFAULT_STACK_SIZE + }; + + let state = SandboxState { + inner: None, + backend, + tools: HashMap::new(), + pending_networks: Vec::new(), + config: SandboxConfig { + module_path, + heap_size, + stack_size, + }, + input_dir: None, + output_dir: None, + temp_output: false, + }; + + let handle = Box::into_raw(Box::new(state)); + debug!( + "hyperlight_sandbox_create: created handle at {:?} (backend={:?})", + handle, backend + ); + FFIResult::success(handle as *mut c_char) +} + +/// Frees a sandbox instance previously created with `hyperlight_sandbox_create`. +/// +/// # Safety +/// +/// The pointer must be a valid handle returned by `hyperlight_sandbox_create` +/// and not already freed. Passing null is safe (no-op). +#[unsafe(no_mangle)] +pub unsafe extern "C" fn hyperlight_sandbox_free(handle: *mut SandboxState) { + if !handle.is_null() { + debug!("hyperlight_sandbox_free: freeing handle at {:?}", handle); + unsafe { + let _ = Box::from_raw(handle); + } + } +} + +// --------------------------------------------------------------------------- +// Configuration (pre-run) +// --------------------------------------------------------------------------- + +/// Sets the read-only input directory for the sandbox. +/// +/// Must be called before the first `run()`. +/// +/// # Safety +/// +/// `handle` must be a valid sandbox handle. `path` must be a null-terminated +/// UTF-8 string. +#[unsafe(no_mangle)] +pub unsafe extern "C" fn hyperlight_sandbox_set_input_dir( + handle: *mut SandboxState, + path: *const c_char, +) -> FFIResult { + let state = match unsafe { deref_handle_mut(handle, "sandbox") } { + Ok(s) => s, + Err(e) => return e, + }; + let path_str = match unsafe { read_cstr(path, "path") } { + Ok(s) => s, + Err(e) => return e, + }; + + if state.inner.is_some() { + return FFIResult::error( + FFIErrorCode::InvalidArgument, + safe_cstring("Cannot set input_dir after sandbox has been initialized"), + ); + } + state.input_dir = Some(path_str.to_owned()); + FFIResult::success_null() +} + +/// Sets the writable output directory for the sandbox. +/// +/// Must be called before the first `run()`. +/// +/// # Safety +/// +/// `handle` must be a valid sandbox handle. `path` must be a null-terminated +/// UTF-8 string. +#[unsafe(no_mangle)] +pub unsafe extern "C" fn hyperlight_sandbox_set_output_dir( + handle: *mut SandboxState, + path: *const c_char, +) -> FFIResult { + let state = match unsafe { deref_handle_mut(handle, "sandbox") } { + Ok(s) => s, + Err(e) => return e, + }; + let path_str = match unsafe { read_cstr(path, "path") } { + Ok(s) => s, + Err(e) => return e, + }; + + if state.inner.is_some() { + return FFIResult::error( + FFIErrorCode::InvalidArgument, + safe_cstring("Cannot set output_dir after sandbox has been initialized"), + ); + } + state.output_dir = Some(path_str.to_owned()); + FFIResult::success_null() +} + +/// Enables a temporary writable output directory. +/// +/// Must be called before the first `run()`. Ignored if `set_output_dir` was called. +/// +/// # Safety +/// +/// `handle` must be a valid sandbox handle. +#[unsafe(no_mangle)] +pub unsafe extern "C" fn hyperlight_sandbox_set_temp_output( + handle: *mut SandboxState, + enabled: bool, +) -> FFIResult { + let state = match unsafe { deref_handle_mut(handle, "sandbox") } { + Ok(s) => s, + Err(e) => return e, + }; + if state.inner.is_some() { + return FFIResult::error( + FFIErrorCode::InvalidArgument, + safe_cstring("Cannot set temp_output after sandbox has been initialized"), + ); + } + state.temp_output = enabled; + FFIResult::success_null() +} + +/// Adds a domain to the network allowlist. +/// +/// Can be called before or after initialization. +/// +/// # Arguments +/// +/// * `target` β€” URL or domain (e.g. `"https://httpbin.org"`). +/// * `methods_json` β€” Optional JSON array of HTTP methods (e.g. `["GET", "POST"]`). +/// Pass null to allow all methods. +/// +/// # Safety +/// +/// `handle` must be a valid sandbox handle. String pointers must be +/// null-terminated UTF-8. +#[unsafe(no_mangle)] +pub unsafe extern "C" fn hyperlight_sandbox_allow_domain( + handle: *mut SandboxState, + target: *const c_char, + methods_json: *const c_char, +) -> FFIResult { + let state = match unsafe { deref_handle_mut(handle, "sandbox") } { + Ok(s) => s, + Err(e) => return e, + }; + let target_str = match unsafe { read_cstr(target, "target") } { + Ok(s) => s, + Err(e) => return e, + }; + + // Parse optional methods list. + let methods: Option> = if methods_json.is_null() { + None + } else { + let json_str = match unsafe { read_cstr(methods_json, "methods_json") } { + Ok(s) => s, + Err(e) => return e, + }; + match serde_json::from_str::>(json_str) { + Ok(m) => Some(m), + Err(e) => { + return FFIResult::error( + FFIErrorCode::InvalidArgument, + safe_cstring(format!("Invalid methods JSON: {e}")), + ); + } + } + }; + if let Some(ref mut sandbox) = state.inner { + // Sandbox already built β€” apply immediately. + let method_filter = match HttpMethod::parse_list(methods) { + Ok(m) => m, + Err(e) => return error_result(e), + }; + let result = with_sandbox!(sandbox, sb => sb.allow_domain(target_str, method_filter)); + match result { + Ok(()) => FFIResult::success_null(), + Err(e) => error_result(e), + } + } else { + // Queue for application during lazy init. + state + .pending_networks + .push((target_str.to_owned(), methods)); + FFIResult::success_null() + } +} + +// --------------------------------------------------------------------------- +// Tool registration +// --------------------------------------------------------------------------- + +/// Registers a host-side tool that guest code can invoke via `call_tool()`. +/// +/// Must be called before the first `run()`. +/// +/// # Arguments +/// +/// * `name` β€” Tool name (null-terminated UTF-8). +/// * `schema_json` β€” Optional JSON schema string describing expected arguments. +/// Pass null for no schema validation. Format: +/// `{"args": {"a": "Number"}, "required": ["a"]}` +/// * `callback` β€” Function pointer invoked when the guest calls this tool. +/// Receives JSON args, must return JSON result (or `{"error": "..."}` on failure). +/// +/// # Safety +/// +/// `handle` must be a valid sandbox handle. `name` must be null-terminated UTF-8. +/// `callback` must be a valid function pointer that remains valid for the lifetime +/// of the sandbox (i.e., the .NET delegate must be pinned with `GCHandle`). +#[unsafe(no_mangle)] +pub unsafe extern "C" fn hyperlight_sandbox_register_tool( + handle: *mut SandboxState, + name: *const c_char, + schema_json: *const c_char, + callback: ToolCallbackFn, +) -> FFIResult { + let state = match unsafe { deref_handle_mut(handle, "sandbox") } { + Ok(s) => s, + Err(e) => return e, + }; + let name_str = match unsafe { read_cstr(name, "name") } { + Ok(s) => s, + Err(e) => return e, + }; + + if state.inner.is_some() { + return FFIResult::error( + FFIErrorCode::InvalidArgument, + safe_cstring( + "Cannot register tools after sandbox has been initialized. \ + Register all tools before the first run() call.", + ), + ); + } + + // Read optional schema. + let schema = if schema_json.is_null() { + None + } else { + match unsafe { read_cstr(schema_json, "schema_json") } { + Ok(s) => Some(s.to_owned()), + Err(e) => return e, + } + }; + + if state.tools.contains_key(name_str) { + return FFIResult::error( + FFIErrorCode::InvalidArgument, + safe_cstring(format!("Tool '{}' is already registered", name_str)), + ); + } + + state.tools.insert( + name_str.to_owned(), + ToolEntry { + callback, + schema_json: schema, + }, + ); + + debug!( + "hyperlight_sandbox_register_tool: registered tool '{}'", + name_str + ); + FFIResult::success_null() +} + +// --------------------------------------------------------------------------- +// Execution +// --------------------------------------------------------------------------- + +/// Build the sandbox lazily on first run. +fn ensure_initialized(state: &mut SandboxState) -> Result<()> { + if state.inner.is_some() { + return Ok(()); + } + + let registry = build_tool_registry(&state.tools)?; + + // Build the appropriate backend. + let sandbox: BackendSandbox = match state.backend { + FFIBackend::Wasm => { + let mut builder = SandboxBuilder::new() + .module_path(&state.config.module_path) + .heap_size(state.config.heap_size) + .stack_size(state.config.stack_size) + .with_tools(registry) + .guest(Wasm); + + if let Some(ref dir) = state.input_dir { + builder = builder.input_dir(dir); + } + if let Some(ref dir) = state.output_dir { + builder = builder.output_dir( + dir, + DirPerms::READ | DirPerms::MUTATE, + FilePerms::READ | FilePerms::WRITE, + ); + } else if state.temp_output { + builder = builder.temp_output(); + } + + let mut sb = builder.build()?; + for (target, methods) in std::mem::take(&mut state.pending_networks) { + let method_filter = HttpMethod::parse_list(methods)?; + sb.allow_domain(&target, method_filter)?; + } + BackendSandbox::Wasm(sb) + } + FFIBackend::JavaScript => { + let mut builder = SandboxBuilder::new() + .heap_size(state.config.heap_size) + .stack_size(state.config.stack_size) + .with_tools(registry) + .guest(HyperlightJs); + + if let Some(ref dir) = state.input_dir { + builder = builder.input_dir(dir); + } + if let Some(ref dir) = state.output_dir { + builder = builder.output_dir( + dir, + DirPerms::READ | DirPerms::MUTATE, + FilePerms::READ | FilePerms::WRITE, + ); + } else if state.temp_output { + builder = builder.temp_output(); + } + + let mut sb = builder.build()?; + for (target, methods) in std::mem::take(&mut state.pending_networks) { + let method_filter = HttpMethod::parse_list(methods)?; + sb.allow_domain(&target, method_filter)?; + } + BackendSandbox::Js(sb) + } + }; + + state.inner = Some(sandbox); + Ok(()) +} + +/// Executes guest code in the sandbox. +/// +/// The first call triggers lazy initialization (building the sandbox, registering +/// tools, applying network permissions). +/// +/// # Arguments +/// +/// * `code` β€” The guest code to execute (null-terminated UTF-8). +/// +/// # Returns +/// +/// On success: `value` is a JSON string `{"stdout":"...","stderr":"...","exit_code":0}`. +/// On failure: `value` is an error message. +/// +/// The caller must free the `value` string with `hyperlight_sandbox_free_string`. +/// +/// # Safety +/// +/// `handle` must be a valid sandbox handle. `code` must be null-terminated UTF-8. +#[unsafe(no_mangle)] +pub unsafe extern "C" fn hyperlight_sandbox_run( + handle: *mut SandboxState, + code: *const c_char, +) -> FFIResult { + let state = match unsafe { deref_handle_mut(handle, "sandbox") } { + Ok(s) => s, + Err(e) => return e, + }; + let code_str = match unsafe { read_cstr(code, "code") } { + Ok(s) => s, + Err(e) => return e, + }; + + // Lazy initialization. + if let Err(e) = ensure_initialized(state) { + return error_result(e); + } + + let sandbox_result = + with_sandbox!(state.inner.as_mut().expect("initialized above"), sb => sb.run(code_str)); + + match sandbox_result { + Ok(result) => { + // Serialize ExecutionResult to JSON. + match serde_json::to_string(&result) { + Ok(json) => FFIResult::success(safe_cstring(json).into_raw()), + Err(e) => FFIResult::error( + FFIErrorCode::Unknown, + safe_cstring(format!("Failed to serialize execution result: {e}")), + ), + } + } + Err(e) => { + // Classify the error β€” don't blindly promote Unknown to GuestError, + // as that masks infrastructure errors (OOM, setup failures). + let code = classify_error(&e); + FFIResult::error(code, safe_cstring(format!("{e:#}"))) + } + } +} + +// --------------------------------------------------------------------------- +// Filesystem +// --------------------------------------------------------------------------- + +/// Returns the list of files in the output directory as a JSON array. +/// +/// # Returns +/// +/// On success: `value` is a JSON array of filenames (e.g. `["file1.txt","file2.txt"]`). +/// On failure: `value` is an error message. +/// +/// # Safety +/// +/// `handle` must be a valid sandbox handle. +#[unsafe(no_mangle)] +pub unsafe extern "C" fn hyperlight_sandbox_get_output_files( + handle: *mut SandboxState, +) -> FFIResult { + let state = match unsafe { deref_handle(handle, "sandbox") } { + Ok(s) => s, + Err(e) => return e, + }; + let sandbox = match state.inner.as_ref() { + Some(s) => s, + None => { + return FFIResult::error( + FFIErrorCode::InvalidArgument, + safe_cstring("Sandbox not initialized β€” call run() first"), + ); + } + }; + + let files_result = with_sandbox!(sandbox, sb => sb.get_output_files()); + + match files_result { + Ok(files) => match serde_json::to_string(&files) { + Ok(json) => FFIResult::success(safe_cstring(json).into_raw()), + Err(e) => FFIResult::error( + FFIErrorCode::Unknown, + safe_cstring(format!("Failed to serialize output files: {e}")), + ), + }, + Err(e) => error_result(e), + } +} + +/// Returns the host filesystem path of the output directory. +/// +/// # Returns +/// +/// On success: `value` is the path string, or null if no output directory is configured. +/// On failure: `value` is an error message. +/// +/// # Safety +/// +/// `handle` must be a valid sandbox handle. +#[unsafe(no_mangle)] +pub unsafe extern "C" fn hyperlight_sandbox_output_path(handle: *mut SandboxState) -> FFIResult { + let state = match unsafe { deref_handle(handle, "sandbox") } { + Ok(s) => s, + Err(e) => return e, + }; + let sandbox = match state.inner.as_ref() { + Some(s) => s, + None => { + return FFIResult::error( + FFIErrorCode::InvalidArgument, + safe_cstring("Sandbox not initialized β€” call run() first"), + ); + } + }; + + let output = with_sandbox!(sandbox, sb => sb.output_path()); + + match output { + Ok(Some(path)) => { + let path_str = path.display().to_string(); + FFIResult::success(safe_cstring(path_str).into_raw()) + } + Ok(None) => FFIResult::success_null(), + Err(e) => error_result(e), + } +} + +// --------------------------------------------------------------------------- +// Snapshot / Restore +// --------------------------------------------------------------------------- + +/// Takes a snapshot of the current sandbox state. +/// +/// The sandbox must be initialized (at least one `run()` call). +/// +/// # Returns +/// +/// On success: `value` is an opaque snapshot handle. +/// On failure: `value` is an error message. +/// +/// The snapshot handle must be freed with `hyperlight_sandbox_free_snapshot`. +/// +/// # Safety +/// +/// `handle` must be a valid sandbox handle. +#[unsafe(no_mangle)] +pub unsafe extern "C" fn hyperlight_sandbox_snapshot(handle: *mut SandboxState) -> FFIResult { + let state = match unsafe { deref_handle_mut(handle, "sandbox") } { + Ok(s) => s, + Err(e) => return e, + }; + let sandbox = match state.inner.as_mut() { + Some(s) => s, + None => { + return FFIResult::error( + FFIErrorCode::InvalidArgument, + safe_cstring("Sandbox not initialized β€” call run() first"), + ); + } + }; + + let snapshot_result = match sandbox { + BackendSandbox::Wasm(sb) => sb.snapshot().map(BackendSnapshot::Wasm), + BackendSandbox::Js(sb) => sb.snapshot().map(BackendSnapshot::Js), + }; + + match snapshot_result { + Ok(snapshot) => { + let boxed = Box::new(snapshot); + FFIResult::success(Box::into_raw(boxed) as *mut c_char) + } + Err(e) => error_result(e), + } +} + +/// Restores the sandbox to a previously captured snapshot. +/// +/// # Safety +/// +/// `handle` must be a valid sandbox handle. `snapshot` must be a valid +/// snapshot handle that has not been freed. +#[unsafe(no_mangle)] +pub unsafe extern "C" fn hyperlight_sandbox_restore( + handle: *mut SandboxState, + snapshot: *const BackendSnapshot, +) -> FFIResult { + let state = match unsafe { deref_handle_mut(handle, "sandbox") } { + Ok(s) => s, + Err(e) => return e, + }; + let snapshot_ref = match unsafe { deref_handle(snapshot, "snapshot") } { + Ok(s) => s, + Err(e) => return e, + }; + + let sandbox = match state.inner.as_mut() { + Some(s) => s, + None => { + return FFIResult::error( + FFIErrorCode::InvalidArgument, + safe_cstring("Sandbox not initialized β€” call run() first"), + ); + } + }; + let result = match (sandbox, snapshot_ref) { + (BackendSandbox::Wasm(sb), BackendSnapshot::Wasm(snap)) => sb.restore(snap), + (BackendSandbox::Js(sb), BackendSnapshot::Js(snap)) => sb.restore(snap), + _ => { + return FFIResult::error( + FFIErrorCode::InvalidArgument, + safe_cstring("Snapshot type does not match sandbox backend"), + ); + } + }; + match result { + Ok(()) => FFIResult::success_null(), + Err(e) => error_result(e), + } +} + +/// Frees a snapshot previously returned by `hyperlight_sandbox_snapshot`. +/// +/// # Safety +/// +/// The pointer must be a valid snapshot handle and not already freed. +/// Passing null is safe (no-op). +#[unsafe(no_mangle)] +pub unsafe extern "C" fn hyperlight_sandbox_free_snapshot(snapshot: *mut BackendSnapshot) { + if !snapshot.is_null() { + unsafe { + let _ = Box::from_raw(snapshot); + } + } +} + +// =========================================================================== +// TESTS +// =========================================================================== + +#[cfg(test)] +mod tests { + use std::ffi::CString; + use std::ptr; + + use super::*; + + // ----------------------------------------------------------------------- + // Helper: create a CString pointer for test use + // ----------------------------------------------------------------------- + fn cstr(s: &str) -> CString { + CString::new(s).expect("test string should not contain null bytes") + } + + // ----------------------------------------------------------------------- + // FFIResult helpers + // ----------------------------------------------------------------------- + + #[test] + fn ffi_result_success_has_correct_fields() { + let msg = safe_cstring("hello"); + let result = FFIResult::success(msg.into_raw()); + assert!(result.is_success); + assert_eq!(result.error_code, FFIErrorCode::Success as u32); + assert!(!result.value.is_null()); + // Clean up + unsafe { hyperlight_sandbox_free_string(result.value) }; + } + + #[test] + fn ffi_result_success_null_has_null_value() { + let result = FFIResult::success_null(); + assert!(result.is_success); + assert_eq!(result.error_code, FFIErrorCode::Success as u32); + assert!(result.value.is_null()); + } + + #[test] + fn ffi_result_error_has_correct_fields() { + let msg = safe_cstring("something broke"); + let result = FFIResult::error(FFIErrorCode::GuestError, msg); + assert!(!result.is_success); + assert_eq!(result.error_code, FFIErrorCode::GuestError as u32); + assert!(!result.value.is_null()); + // Read the error message + let err_str = unsafe { CStr::from_ptr(result.value) } + .to_str() + .expect("valid UTF-8"); + assert!(err_str.contains("something broke")); + unsafe { hyperlight_sandbox_free_string(result.value) }; + } + + // ----------------------------------------------------------------------- + // safe_cstring + // ----------------------------------------------------------------------- + + #[test] + fn safe_cstring_normal_string() { + let cs = safe_cstring("Hello, World!"); + assert_eq!(cs.to_str().expect("valid"), "Hello, World!"); + } + + #[test] + fn safe_cstring_empty_string() { + let cs = safe_cstring(""); + assert_eq!(cs.to_str().expect("valid"), ""); + } + + #[test] + fn safe_cstring_with_embedded_null_sanitizes() { + let bytes = b"hello\0world".to_vec(); + let cs = safe_cstring(bytes); + let s = cs.to_str().expect("valid"); + // The null byte should be replaced and a warning prepended + assert!(s.contains("WARNING")); + assert!(s.contains("hello world")); + } + + // ----------------------------------------------------------------------- + // classify_error + // ----------------------------------------------------------------------- + + #[test] + fn classify_error_poisoned() { + let err = anyhow::anyhow!("mutex poisoned during sandbox run"); + assert_eq!(classify_error(&err), FFIErrorCode::Poisoned); + } + + #[test] + fn classify_error_timeout() { + let err = anyhow::anyhow!("execution timeout exceeded"); + assert_eq!(classify_error(&err), FFIErrorCode::Timeout); + } + + #[test] + fn classify_error_cancelled() { + let err = anyhow::anyhow!("operation was cancelled by host"); + assert_eq!(classify_error(&err), FFIErrorCode::Timeout); + } + + #[test] + fn classify_error_permission() { + let err = anyhow::anyhow!("request not allowed by network policy"); + assert_eq!(classify_error(&err), FFIErrorCode::PermissionDenied); + } + + #[test] + fn classify_error_io() { + let err = anyhow::anyhow!("i/o error reading file"); + assert_eq!(classify_error(&err), FFIErrorCode::IoError); + } + + #[test] + fn classify_error_unknown_fallback() { + let err = anyhow::anyhow!("some mysterious failure"); + assert_eq!(classify_error(&err), FFIErrorCode::Unknown); + } + + // ----------------------------------------------------------------------- + // parse_size + // ----------------------------------------------------------------------- + + #[test] + fn parse_size_plain_bytes() { + assert_eq!(parse_size("1024").unwrap(), 1024); + } + + #[test] + fn parse_size_kilobytes() { + assert_eq!(parse_size("10Ki").unwrap(), 10 * 1024); + } + + #[test] + fn parse_size_megabytes() { + assert_eq!(parse_size("25Mi").unwrap(), 25 * 1024 * 1024); + } + + #[test] + fn parse_size_gigabytes() { + assert_eq!(parse_size("2Gi").unwrap(), 2 * 1024 * 1024 * 1024); + } + + #[test] + fn parse_size_with_whitespace() { + assert_eq!(parse_size(" 400Mi ").unwrap(), 400 * 1024 * 1024); + } + + #[test] + fn parse_size_invalid_number() { + assert!(parse_size("abcMi").is_err()); + } + + #[test] + fn parse_size_empty_string() { + assert!(parse_size("").is_err()); + } + + #[test] + fn parse_size_overflow() { + // u64::MAX in Gi would overflow + assert!(parse_size("999999999999999999Gi").is_err()); + } + + // ----------------------------------------------------------------------- + // parse_tool_schema + // ----------------------------------------------------------------------- + + #[test] + fn parse_tool_schema_with_typed_args() { + let json = r#"{"args": {"a": "Number", "b": "String"}, "required": ["a"]}"#; + let schema = parse_tool_schema(json).unwrap(); + assert_eq!(schema.properties.len(), 2); + assert_eq!( + schema.properties.get("a"), + Some(&hyperlight_sandbox::ArgType::Number) + ); + assert_eq!( + schema.properties.get("b"), + Some(&hyperlight_sandbox::ArgType::String) + ); + assert!(schema.required.contains(&"a".to_string())); + assert!(!schema.required.contains(&"b".to_string())); + } + + #[test] + fn parse_tool_schema_boolean_alias() { + let json = r#"{"args": {"flag": "bool"}, "required": []}"#; + let schema = parse_tool_schema(json).unwrap(); + assert_eq!( + schema.properties.get("flag"), + Some(&hyperlight_sandbox::ArgType::Boolean) + ); + } + + #[test] + fn parse_tool_schema_all_types() { + let json = r#"{"args": {"n": "Number", "s": "String", "b": "Boolean", "o": "Object", "a": "Array"}, "required": []}"#; + let schema = parse_tool_schema(json).unwrap(); + assert_eq!(schema.properties.len(), 5); + } + + #[test] + fn parse_tool_schema_empty() { + let json = r#"{}"#; + let schema = parse_tool_schema(json).unwrap(); + assert!(schema.properties.is_empty()); + assert!(schema.required.is_empty()); + } + + #[test] + fn parse_tool_schema_required_untyped() { + let json = r#"{"required": ["x"]}"#; + let schema = parse_tool_schema(json).unwrap(); + assert!(schema.required.contains(&"x".to_string())); + assert!(!schema.properties.contains_key("x")); + } + + #[test] + fn parse_tool_schema_unknown_type_errors() { + let json = r#"{"args": {"a": "Unicorn"}, "required": []}"#; + assert!(parse_tool_schema(json).is_err()); + } + + #[test] + fn parse_tool_schema_invalid_json() { + assert!(parse_tool_schema("not json").is_err()); + } + + // ----------------------------------------------------------------------- + // read_cstr / deref_handle + // ----------------------------------------------------------------------- + + #[test] + fn read_cstr_null_returns_error() { + let result = unsafe { read_cstr(ptr::null(), "test_param") }; + assert!(result.is_err()); + let ffi_result = result.unwrap_err(); + assert!(!ffi_result.is_success); + assert_eq!(ffi_result.error_code, FFIErrorCode::InvalidArgument as u32); + unsafe { hyperlight_sandbox_free_string(ffi_result.value) }; + } + + #[test] + fn read_cstr_valid_string() { + let s = cstr("hello"); + let result = unsafe { read_cstr(s.as_ptr(), "test_param") }; + assert_eq!(result.unwrap(), "hello"); + } + + #[test] + fn deref_handle_null_returns_error() { + let result = unsafe { deref_handle::(ptr::null(), "test_handle") }; + assert!(result.is_err()); + let ffi_result = result.unwrap_err(); + assert!(!ffi_result.is_success); + unsafe { hyperlight_sandbox_free_string(ffi_result.value) }; + } + + #[test] + fn deref_handle_valid_pointer_ok() { + let x: u8 = 42; + let result = unsafe { deref_handle(&x as *const u8, "test_handle") }; + assert!(result.is_ok()); + assert_eq!(*result.unwrap(), 42); + } + + #[test] + fn deref_handle_mut_null_returns_error() { + let result = unsafe { deref_handle_mut::(ptr::null_mut(), "test_handle") }; + assert!(result.is_err()); + let ffi_result = result.unwrap_err(); + assert!(!ffi_result.is_success); + unsafe { hyperlight_sandbox_free_string(ffi_result.value) }; + } + + #[test] + fn deref_handle_mut_valid_pointer_ok() { + let mut x: u8 = 42; + let result = unsafe { deref_handle_mut(&mut x as *mut u8, "test_handle") }; + assert!(result.is_ok()); + *result.unwrap() = 99; + assert_eq!(x, 99); + } + + // ----------------------------------------------------------------------- + // Version + // ----------------------------------------------------------------------- + + #[test] + fn get_version_returns_valid_string() { + let ptr = hyperlight_sandbox_get_version(); + assert!(!ptr.is_null()); + let version = unsafe { CStr::from_ptr(ptr) } + .to_str() + .expect("valid UTF-8"); + // Should match Cargo.toml version + assert!(!version.is_empty()); + assert!(version.contains('.'), "version should be semver: {version}"); + unsafe { hyperlight_sandbox_free_string(ptr) }; + } + + // ----------------------------------------------------------------------- + // Free string + // ----------------------------------------------------------------------- + + #[test] + fn free_string_null_is_safe() { + unsafe { hyperlight_sandbox_free_string(ptr::null_mut()) }; + // Should not crash + } + + #[test] + fn free_string_valid_pointer() { + let s = safe_cstring("to be freed"); + let ptr = s.into_raw(); + unsafe { hyperlight_sandbox_free_string(ptr) }; + // Should not crash or leak + } + + // ----------------------------------------------------------------------- + // Sandbox create / free + // ----------------------------------------------------------------------- + + #[test] + fn create_with_null_module_path_fails() { + let options = FFISandboxOptions { + module_path: ptr::null(), + heap_size: 0, + stack_size: 0, + backend: 0, + }; + let result = unsafe { hyperlight_sandbox_create(options) }; + assert!(!result.is_success); + assert_eq!(result.error_code, FFIErrorCode::InvalidArgument as u32); + unsafe { hyperlight_sandbox_free_string(result.value) }; + } + + #[test] + fn create_with_empty_module_path_fails() { + let path = cstr(""); + let options = FFISandboxOptions { + module_path: path.as_ptr(), + heap_size: 0, + stack_size: 0, + backend: 0, + }; + let result = unsafe { hyperlight_sandbox_create(options) }; + assert!(!result.is_success); + assert_eq!(result.error_code, FFIErrorCode::InvalidArgument as u32); + unsafe { hyperlight_sandbox_free_string(result.value) }; + } + + #[test] + fn create_and_free_succeeds() { + let path = cstr("/tmp/nonexistent.wasm"); + let options = FFISandboxOptions { + module_path: path.as_ptr(), + heap_size: 0, + stack_size: 0, + backend: 0, + }; + let result = unsafe { hyperlight_sandbox_create(options) }; + assert!(result.is_success, "create should succeed"); + assert!(!result.value.is_null(), "handle should be non-null"); + + // Free the handle + let handle = result.value as *mut SandboxState; + unsafe { hyperlight_sandbox_free(handle) }; + } + + #[test] + fn free_null_handle_is_safe() { + unsafe { hyperlight_sandbox_free(ptr::null_mut()) }; + } + + #[test] + fn create_with_custom_sizes() { + let path = cstr("/tmp/test.wasm"); + let options = FFISandboxOptions { + module_path: path.as_ptr(), + heap_size: 50 * 1024 * 1024, // 50 MiB + stack_size: 10 * 1024 * 1024, + backend: 0, // 10 MiB + }; + let result = unsafe { hyperlight_sandbox_create(options) }; + assert!(result.is_success); + + let handle = result.value as *mut SandboxState; + let state = unsafe { &*handle }; + assert_eq!(state.config.heap_size, 50 * 1024 * 1024); + assert_eq!(state.config.stack_size, 10 * 1024 * 1024); + + unsafe { hyperlight_sandbox_free(handle) }; + } + + #[test] + fn create_with_zero_sizes_uses_defaults() { + let path = cstr("/tmp/test.wasm"); + let options = FFISandboxOptions { + module_path: path.as_ptr(), + heap_size: 0, + stack_size: 0, + backend: 0, + }; + let result = unsafe { hyperlight_sandbox_create(options) }; + assert!(result.is_success); + + let handle = result.value as *mut SandboxState; + let state = unsafe { &*handle }; + assert_eq!(state.config.heap_size, DEFAULT_HEAP_SIZE); + assert_eq!(state.config.stack_size, DEFAULT_STACK_SIZE); + + unsafe { hyperlight_sandbox_free(handle) }; + } + + // ----------------------------------------------------------------------- + // Helper: create a test handle (not initialized β€” no real wasm module) + // ----------------------------------------------------------------------- + + fn create_test_handle() -> *mut SandboxState { + let path = cstr("/tmp/test-module.wasm"); + let options = FFISandboxOptions { + module_path: path.as_ptr(), + heap_size: 0, + stack_size: 0, + backend: 0, + }; + let result = unsafe { hyperlight_sandbox_create(options) }; + assert!(result.is_success, "test handle creation should succeed"); + result.value as *mut SandboxState + } + + // ----------------------------------------------------------------------- + // Configuration: set_input_dir + // ----------------------------------------------------------------------- + + #[test] + fn set_input_dir_succeeds() { + let handle = create_test_handle(); + let path = cstr("/tmp/input"); + let result = unsafe { hyperlight_sandbox_set_input_dir(handle, path.as_ptr()) }; + assert!(result.is_success); + + let state = unsafe { &*handle }; + assert_eq!(state.input_dir.as_deref(), Some("/tmp/input")); + + unsafe { hyperlight_sandbox_free(handle) }; + } + + #[test] + fn set_input_dir_null_handle_fails() { + let path = cstr("/tmp/input"); + let result = unsafe { hyperlight_sandbox_set_input_dir(ptr::null_mut(), path.as_ptr()) }; + assert!(!result.is_success); + assert_eq!(result.error_code, FFIErrorCode::InvalidArgument as u32); + unsafe { hyperlight_sandbox_free_string(result.value) }; + } + + #[test] + fn set_input_dir_null_path_fails() { + let handle = create_test_handle(); + let result = unsafe { hyperlight_sandbox_set_input_dir(handle, ptr::null()) }; + assert!(!result.is_success); + assert_eq!(result.error_code, FFIErrorCode::InvalidArgument as u32); + unsafe { hyperlight_sandbox_free_string(result.value) }; + unsafe { hyperlight_sandbox_free(handle) }; + } + + // ----------------------------------------------------------------------- + // Configuration: set_output_dir + // ----------------------------------------------------------------------- + + #[test] + fn set_output_dir_succeeds() { + let handle = create_test_handle(); + let path = cstr("/tmp/output"); + let result = unsafe { hyperlight_sandbox_set_output_dir(handle, path.as_ptr()) }; + assert!(result.is_success); + + let state = unsafe { &*handle }; + assert_eq!(state.output_dir.as_deref(), Some("/tmp/output")); + + unsafe { hyperlight_sandbox_free(handle) }; + } + + // ----------------------------------------------------------------------- + // Configuration: set_temp_output + // ----------------------------------------------------------------------- + + #[test] + fn set_temp_output_succeeds() { + let handle = create_test_handle(); + let result = unsafe { hyperlight_sandbox_set_temp_output(handle, true) }; + assert!(result.is_success); + + let state = unsafe { &*handle }; + assert!(state.temp_output); + + unsafe { hyperlight_sandbox_free(handle) }; + } + + #[test] + fn set_temp_output_null_handle_fails() { + let result = unsafe { hyperlight_sandbox_set_temp_output(ptr::null_mut(), true) }; + assert!(!result.is_success); + unsafe { hyperlight_sandbox_free_string(result.value) }; + } + + // ----------------------------------------------------------------------- + // Configuration: allow_domain + // ----------------------------------------------------------------------- + + #[test] + fn allow_domain_queues_before_init() { + let handle = create_test_handle(); + let target = cstr("https://httpbin.org"); + let result = + unsafe { hyperlight_sandbox_allow_domain(handle, target.as_ptr(), ptr::null()) }; + assert!(result.is_success); + + let state = unsafe { &*handle }; + assert_eq!(state.pending_networks.len(), 1); + assert_eq!(state.pending_networks[0].0, "https://httpbin.org"); + assert!(state.pending_networks[0].1.is_none()); + + unsafe { hyperlight_sandbox_free(handle) }; + } + + #[test] + fn allow_domain_with_methods_queues_correctly() { + let handle = create_test_handle(); + let target = cstr("https://api.example.com"); + let methods = cstr(r#"["GET", "POST"]"#); + let result = + unsafe { hyperlight_sandbox_allow_domain(handle, target.as_ptr(), methods.as_ptr()) }; + assert!(result.is_success); + + let state = unsafe { &*handle }; + assert_eq!(state.pending_networks.len(), 1); + assert_eq!( + state.pending_networks[0].1, + Some(vec!["GET".to_string(), "POST".to_string()]) + ); + + unsafe { hyperlight_sandbox_free(handle) }; + } + + #[test] + fn allow_domain_null_handle_fails() { + let target = cstr("https://example.com"); + let result = unsafe { + hyperlight_sandbox_allow_domain(ptr::null_mut(), target.as_ptr(), ptr::null()) + }; + assert!(!result.is_success); + unsafe { hyperlight_sandbox_free_string(result.value) }; + } + + #[test] + fn allow_domain_invalid_methods_json_fails() { + let handle = create_test_handle(); + let target = cstr("https://example.com"); + let bad_methods = cstr("not valid json"); + let result = unsafe { + hyperlight_sandbox_allow_domain(handle, target.as_ptr(), bad_methods.as_ptr()) + }; + assert!(!result.is_success); + assert_eq!(result.error_code, FFIErrorCode::InvalidArgument as u32); + unsafe { hyperlight_sandbox_free_string(result.value) }; + unsafe { hyperlight_sandbox_free(handle) }; + } + + // ----------------------------------------------------------------------- + // Tool registration + // ----------------------------------------------------------------------- + + /// A trivial test callback that echoes its input wrapped in {"echo": ...}. + unsafe extern "C" fn echo_callback(args_json: *const c_char) -> *mut c_char { + let input = unsafe { CStr::from_ptr(args_json) } + .to_str() + .unwrap_or("{}"); + let response = format!(r#"{{"echo": {}}}"#, input); + CString::new(response).expect("no nulls").into_raw() + } + + #[test] + fn register_tool_succeeds() { + let handle = create_test_handle(); + let name = cstr("echo"); + let result = unsafe { + hyperlight_sandbox_register_tool(handle, name.as_ptr(), ptr::null(), echo_callback) + }; + assert!(result.is_success); + + let state = unsafe { &*handle }; + assert!(state.tools.contains_key("echo")); + + unsafe { hyperlight_sandbox_free(handle) }; + } + + #[test] + fn register_tool_with_schema_succeeds() { + let handle = create_test_handle(); + let name = cstr("add"); + let schema = cstr(r#"{"args": {"a": "Number", "b": "Number"}, "required": ["a", "b"]}"#); + let result = unsafe { + hyperlight_sandbox_register_tool(handle, name.as_ptr(), schema.as_ptr(), echo_callback) + }; + assert!(result.is_success); + + let state = unsafe { &*handle }; + let entry = state.tools.get("add").expect("tool should exist"); + assert!(entry.schema_json.is_some()); + + unsafe { hyperlight_sandbox_free(handle) }; + } + + #[test] + fn register_tool_null_handle_fails() { + let name = cstr("test"); + let result = unsafe { + hyperlight_sandbox_register_tool( + ptr::null_mut(), + name.as_ptr(), + ptr::null(), + echo_callback, + ) + }; + assert!(!result.is_success); + unsafe { hyperlight_sandbox_free_string(result.value) }; + } + + #[test] + fn register_tool_null_name_fails() { + let handle = create_test_handle(); + let result = unsafe { + hyperlight_sandbox_register_tool(handle, ptr::null(), ptr::null(), echo_callback) + }; + assert!(!result.is_success); + unsafe { hyperlight_sandbox_free_string(result.value) }; + unsafe { hyperlight_sandbox_free(handle) }; + } + + #[test] + fn register_multiple_tools() { + let handle = create_test_handle(); + + let name1 = cstr("tool1"); + let name2 = cstr("tool2"); + let name3 = cstr("tool3"); + + let r1 = unsafe { + hyperlight_sandbox_register_tool(handle, name1.as_ptr(), ptr::null(), echo_callback) + }; + let r2 = unsafe { + hyperlight_sandbox_register_tool(handle, name2.as_ptr(), ptr::null(), echo_callback) + }; + let r3 = unsafe { + hyperlight_sandbox_register_tool(handle, name3.as_ptr(), ptr::null(), echo_callback) + }; + + assert!(r1.is_success); + assert!(r2.is_success); + assert!(r3.is_success); + + let state = unsafe { &*handle }; + assert_eq!(state.tools.len(), 3); + + unsafe { hyperlight_sandbox_free(handle) }; + } + + // ----------------------------------------------------------------------- + // build_tool_registry (internal) + // ----------------------------------------------------------------------- + + #[test] + fn build_tool_registry_empty_succeeds() { + let tools = HashMap::new(); + let registry = build_tool_registry(&tools); + assert!(registry.is_ok()); + } + + #[test] + fn build_tool_registry_with_callback_dispatches() { + let mut tools = HashMap::new(); + tools.insert( + "echo".to_string(), + ToolEntry { + callback: echo_callback, + schema_json: None, + }, + ); + + let registry = build_tool_registry(&tools).expect("should build"); + let args = serde_json::json!({"message": "hello"}); + let result = registry.dispatch("echo", args).expect("should dispatch"); + + // The echo callback wraps input in {"echo": ...} + assert!(result.get("echo").is_some()); + } + + #[test] + fn build_tool_registry_with_invalid_schema_fails() { + let mut tools = HashMap::new(); + tools.insert( + "bad".to_string(), + ToolEntry { + callback: echo_callback, + schema_json: Some("not valid json".to_string()), + }, + ); + + let result = build_tool_registry(&tools); + assert!(result.is_err()); + } + + // ----------------------------------------------------------------------- + // Execution: run() without a real module (should fail gracefully) + // ----------------------------------------------------------------------- + + #[test] + fn run_with_nonexistent_module_fails() { + let handle = create_test_handle(); + let code = cstr("print('hello')"); + let result = unsafe { hyperlight_sandbox_run(handle, code.as_ptr()) }; + + // Should fail because module doesn't exist, but NOT crash + assert!(!result.is_success); + assert!(!result.value.is_null()); + + // Error message should mention the file + let err = unsafe { CStr::from_ptr(result.value) } + .to_str() + .expect("valid UTF-8"); + assert!(!err.is_empty(), "error message should not be empty"); + + unsafe { hyperlight_sandbox_free_string(result.value) }; + unsafe { hyperlight_sandbox_free(handle) }; + } + + #[test] + fn run_null_handle_fails() { + let code = cstr("print('hello')"); + let result = unsafe { hyperlight_sandbox_run(ptr::null_mut(), code.as_ptr()) }; + assert!(!result.is_success); + unsafe { hyperlight_sandbox_free_string(result.value) }; + } + + #[test] + fn run_null_code_fails() { + let handle = create_test_handle(); + let result = unsafe { hyperlight_sandbox_run(handle, ptr::null()) }; + assert!(!result.is_success); + assert_eq!(result.error_code, FFIErrorCode::InvalidArgument as u32); + unsafe { hyperlight_sandbox_free_string(result.value) }; + unsafe { hyperlight_sandbox_free(handle) }; + } + + // ----------------------------------------------------------------------- + // Filesystem: pre-init access fails gracefully + // ----------------------------------------------------------------------- + + #[test] + fn get_output_files_before_init_fails() { + let handle = create_test_handle(); + let result = unsafe { hyperlight_sandbox_get_output_files(handle) }; + assert!(!result.is_success); + let err = unsafe { CStr::from_ptr(result.value) }.to_str().unwrap(); + assert!(err.contains("not initialized")); + unsafe { hyperlight_sandbox_free_string(result.value) }; + unsafe { hyperlight_sandbox_free(handle) }; + } + + #[test] + fn output_path_before_init_fails() { + let handle = create_test_handle(); + let result = unsafe { hyperlight_sandbox_output_path(handle) }; + assert!(!result.is_success); + let err = unsafe { CStr::from_ptr(result.value) }.to_str().unwrap(); + assert!(err.contains("not initialized")); + unsafe { hyperlight_sandbox_free_string(result.value) }; + unsafe { hyperlight_sandbox_free(handle) }; + } + + // ----------------------------------------------------------------------- + // Snapshot: pre-init access fails gracefully + // ----------------------------------------------------------------------- + + #[test] + fn snapshot_before_init_fails() { + let handle = create_test_handle(); + let result = unsafe { hyperlight_sandbox_snapshot(handle) }; + assert!(!result.is_success); + unsafe { hyperlight_sandbox_free_string(result.value) }; + unsafe { hyperlight_sandbox_free(handle) }; + } + + #[test] + fn restore_null_snapshot_fails() { + let handle = create_test_handle(); + let result = unsafe { hyperlight_sandbox_restore(handle, ptr::null()) }; + assert!(!result.is_success); + assert_eq!(result.error_code, FFIErrorCode::InvalidArgument as u32); + unsafe { hyperlight_sandbox_free_string(result.value) }; + unsafe { hyperlight_sandbox_free(handle) }; + } + + #[test] + fn free_snapshot_null_is_safe() { + unsafe { hyperlight_sandbox_free_snapshot(ptr::null_mut()) }; + } + + // ----------------------------------------------------------------------- + // Error code values are stable + // ----------------------------------------------------------------------- + + #[test] + fn error_codes_have_expected_values() { + assert_eq!(FFIErrorCode::Success as u32, 0); + assert_eq!(FFIErrorCode::Unknown as u32, 1); + assert_eq!(FFIErrorCode::Timeout as u32, 2); + assert_eq!(FFIErrorCode::Poisoned as u32, 3); + assert_eq!(FFIErrorCode::PermissionDenied as u32, 4); + assert_eq!(FFIErrorCode::GuestError as u32, 5); + assert_eq!(FFIErrorCode::InvalidArgument as u32, 6); + assert_eq!(FFIErrorCode::IoError as u32, 7); + } + + // ----------------------------------------------------------------------- + // Config after init is rejected + // ----------------------------------------------------------------------- + // We can't test this with a real initialized sandbox (no module), + // but we can manually set inner to verify the guard. + + #[test] + fn register_tool_after_init_flagged_fails() { + // We test the guard by manually simulating an initialized state. + // Since we can't build a real Sandbox without a valid module, + // we verify via the pre-init path (covered by other tests). + // The actual post-init rejection is verified via the "inner.is_some()" + // check in register_tool β€” which is a code path we can trust from + // the pre-init tests plus code inspection. + // + // A full integration test with a real .wasm module is in Phase 6. + } +} diff --git a/uv.lock b/uv.lock index b621ed8..f908757 100644 --- a/uv.lock +++ b/uv.lock @@ -671,7 +671,7 @@ wheels = [ [[package]] name = "hyperlight-sandbox" -version = "0.2.0" +version = "0.3.0" source = { editable = "src/sdk/python/core" } [package.optional-dependencies] @@ -703,17 +703,17 @@ provides-extras = ["wasm", "hyperlight-js", "python-guest", "javascript-guest", [[package]] name = "hyperlight-sandbox-backend-hyperlight-js" -version = "0.2.0" +version = "0.3.0" source = { editable = "src/sdk/python/hyperlight_js_backend" } [[package]] name = "hyperlight-sandbox-backend-wasm" -version = "0.2.0" +version = "0.3.0" source = { editable = "src/sdk/python/wasm_backend" } [[package]] name = "hyperlight-sandbox-dev" -version = "0.2.0" +version = "0.3.0" source = { virtual = "." } [package.dev-dependencies] @@ -777,12 +777,12 @@ dev = [ [[package]] name = "hyperlight-sandbox-javascript-guest" -version = "0.2.0" +version = "0.3.0" source = { editable = "src/sdk/python/wasm_guests/javascript_guest" } [[package]] name = "hyperlight-sandbox-python-guest" -version = "0.2.0" +version = "0.3.0" source = { editable = "src/sdk/python/wasm_guests/python_guest" } [[package]]