WIP - Rlbox integration for lucet sandbox

.gitignore

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+/build/
+/target/
+/.vscode/

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.11)
+
+project(rlbox_lucet
+        VERSION 0.1
+        DESCRIPTION "RLBox integration with WASM modules compiled with lucet")
+
+# Project Settings ###################
+
+# set(CMAKE_VERBOSE_MAKEFILE ON)
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
+if(MSVC)
+  add_compile_options(/W4 /WX)
+else()
+  add_compile_options(-Wall
+                      -Wextra
+                      -pedantic
+                      -Werror)
+endif()
+
+# Dev Tools ###################
+
+find_program(CLANG_TIDY "clang-tidy")
+if(CLANG_TIDY)
+  # Config in .clang-tidy
+  set(CMAKE_CXX_CLANG_TIDY clang-tidy)
+endif()
+
+file(GLOB_RECURSE
+     ALL_CXX_SOURCE_FILES
+     include/*.[chi]pp
+     include/*.[chi]xx
+     include/*.cc
+     include/*.hh
+     include/*.ii
+     include/*.[CHI]
+     test/*.[chi]pp
+     test/*.[chi]xx
+     test/*.cc
+     test/*.hh
+     test/*.ii
+     test/*.[CHI])
+
+find_program(CLANG_FORMAT "clang-format")
+if(CLANG_FORMAT)
+  # Config in .clang-format
+  add_custom_target(format-source
+                    COMMAND clang-format
+                            -i
+                            -style=file
+                            ${ALL_CXX_SOURCE_FILES})
+endif()
+
+# Dependencies ###################
+
+include(FetchContent)
+
+FetchContent_Declare(
+  rlbox
+  GIT_REPOSITORY https://github.com/PLSysSec/rlbox_api_cpp17.git)
+
+FetchContent_GetProperties(rlbox)
+if(NOT catch2_POLULATED)
+  FetchContent_Populate(rlbox)
+endif()
+
+FetchContent_Declare(catch2
+                     GIT_REPOSITORY https://github.com/catchorg/Catch2.git
+                     GIT_TAG v2.9.1)
+
+FetchContent_GetProperties(catch2)
+if(NOT catch2_POLULATED)
+  FetchContent_Populate(catch2)
+endif()
+
+add_subdirectory("${catch2_SOURCE_DIR}")
+list(APPEND CMAKE_MODULE_PATH "${catch2_SOURCE_DIR}/contrib")
+
+# Rust Lib ###################
+
+find_program(CARGO "cargo")
+if(!CARGO)
+  message(
+    FATAL_ERROR "Could not find cargo. This is needed to build rust libraries.")
+endif()
+
+file(GLOB_RECURSE RUST_SOURCE_FILES src/*.rs)
+
+# Use the dynamic library as wasi symbols needed by the wasm module are hosted
+# in it. If we include the static version, we need to make the main executable
+# expose symbols through rdynamic
+set(RUST_LIB_DEBUG_PATH
+    "${CMAKE_BINARY_DIR}/cargo/debug/librlbox_lucet_sandbox.so")
+add_custom_command(OUTPUT ${RUST_LIB_DEBUG_PATH}
+                   DEPENDS ${RUST_SOURCE_FILES} Cargo.toml
+                   COMMAND CARGO_TARGET_DIR=${CMAKE_BINARY_DIR}/cargo ${CARGO}
+                           build
+                   COMMENT "Building rust library")
+add_custom_target(lucet_sandbox_rustlib_debug ALL
+                  DEPENDS ${RUST_LIB_DEBUG_PATH})
+
+set(RUST_LIB_RELEASE_PATH
+    "${CMAKE_BINARY_DIR}/cargo/release/librlbox_lucet_sandbox.so")
+add_custom_command(OUTPUT ${RUST_LIB_RELEASE_PATH}
+                   DEPENDS ${RUST_SOURCE_FILES}
+                   COMMAND CARGO_TARGET_DIR=${CMAKE_BINARY_DIR}/cargo
+                           ${CARGO}
+                           build
+                           --release
+                   COMMENT "Building rust library")
+add_custom_target(lucet_sandbox_rustlib_release ALL
+                  DEPENDS ${RUST_LIB_RELEASE_PATH})
+
+add_library(lucet_sandbox_rustlib SHARED IMPORTED)
+set_target_properties(lucet_sandbox_rustlib
+                      PROPERTIES IMPORTED_LOCATION ${RUST_LIB_DEBUG_PATH})
+set_target_properties(lucet_sandbox_rustlib
+                      PROPERTIES IMPORTED_LOCATION_DEBUG ${RUST_LIB_DEBUG_PATH})
+set_target_properties(lucet_sandbox_rustlib
+                      PROPERTIES IMPORTED_LOCATION_RELEASE
+                                 ${RUST_LIB_RELEASE_PATH})
+
+# Tests ###################
+
+include(CTest)
+include(Catch)
+
+find_program(WASMCLANG "clang")
+
+if(!WASMCLANG)
+  message(
+    FATAL_ERROR
+      "Require clang with support for target 'wasm32-wasi' to build the WASM module"
+    )
+endif()
+
+file(GLOB_RECURSE C_SOURCE_FILES c_src/*)
+set(GLUE_LIB_WASM "${CMAKE_BINARY_DIR}/wasm/glue_lib_lucet.wasm")
+set(GLUE_LIB_SO "${CMAKE_BINARY_DIR}/wasm/glue_lib_lucet.so")
+
+add_custom_command(OUTPUT ${GLUE_LIB_WASM} ${GLUE_LIB_SO}
+                   DEPENDS ${C_SOURCE_FILES}
+                   WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}/c_src
+                   COMMAND rlbox_SOURCE_DIR=${rlbox_SOURCE_DIR}
+                           cmake
+                           -S
+                           .
+                           -B
+                           ${CMAKE_BINARY_DIR}/wasm
+                   COMMAND VERBOSE=1
+                           cmake
+                           --build
+                           ${CMAKE_BINARY_DIR}/wasm
+                           --target
+                           all
+                   COMMENT "Building wasm library")
+
+add_custom_target(glue_lib_wasm ALL DEPENDS ${GLUE_LIB_WASM} ${GLUE_LIB_SO})
+
+add_executable(test_rlbox_glue test/test_lucet_sandbox_glue.cpp)
+target_include_directories(test_rlbox_glue PUBLIC include)
+target_include_directories(test_rlbox_glue
+                           PUBLIC ${rlbox_SOURCE_DIR}/code/include)
+target_include_directories(test_rlbox_glue
+                           PUBLIC ${rlbox_SOURCE_DIR}/code/tests/rlbox_glue)
+target_include_directories(test_rlbox_glue
+                           PUBLIC ${rlbox_SOURCE_DIR}/code/tests/rlbox_glue/lib)
+
+find_package(Threads REQUIRED)
+
+target_compile_definitions(test_rlbox_glue PUBLIC
+                           GLUE_LIB_LUCET_PATH="${GLUE_LIB_SO}")
+
+target_link_libraries(test_rlbox_glue
+                      Catch2::Catch2
+                      lucet_sandbox_rustlib
+                      ${CMAKE_THREAD_LIBS_INIT}
+                      ${CMAKE_DL_LIBS}
+                      # glue_lib_lucet
+                      )
+
+if(UNIX)
+  target_link_libraries(test_rlbox_glue rt)
+endif()
+catch_discover_tests(test_rlbox_glue)