Update emscripten requirements and WASM CI job (#1036)

* Bump emsdk version to 3.1.47
  Produces module importable in Node v18
  With older (emsdk 3.0.0) version, generated `libthemis.js` that should
  load `libthemis.wasm` fails due to some internal autogenerated code
  working differently on v16 and v18

* Add link flag for WASM builds
  Needed to make new emscripten produce working module

* Update Node testing versions
  Add v18 that should now work, also add v20 that is in active development
  as of now, but if tests are green then why not?

* Switched integration tests to use v16

* Removed testing of quite old and deprecated v10

* Updated version of BoringSSL submodule to a newer one (not the latest though)

.github/workflows/integration.yaml

@@ -66,10 +66,10 @@ jobs:
         with:
           toolchain: stable
           profile: minimal
-      - name: Install Node.js 10.x
+      - name: Install Node.js 16.x
         uses: actions/setup-node@v1
         with:
-          node-version: 10.x
+          node-version: 16.x
       - name: Install Emscripten
         run: |
           version=$(cat src/wrappers/themis/wasm/emscripten/VERSION)

.github/workflows/test-wasm.yaml

@@ -78,10 +78,11 @@ jobs:
     strategy:
       matrix:
         node-version:
-          - 10.x  # legacy
-          - 12.x  # old LTS
-          - 14.x  # current LTS
-          - 16.x  # current stable
+          - 12.x  # legacy
+          - 14.x  # legacy
+          - 16.x  # legacy
+          - 18.x  # current LTS
+          - 20.x  # current active
       fail-fast: false
     steps:
       - name: Install Node.js ${{ matrix.node-version }}
@@ -110,9 +111,11 @@ jobs:
     strategy:
       matrix:
         node-version:
-          - 12.x  # old LTS
-          - 14.x  # current LTS
-          - 16.x  # current stable
+          - 12.x  # legacy
+          - 14.x  # legacy
+          - 16.x  # legacy
+          - 18.x  # current LTS
+          - 20.x  # current active
       fail-fast: false
     env:
       # WasmThemis uses promises to handle asynchronous WebAssmebly compilation.

CHANGELOG.md

@@ -43,6 +43,11 @@ _Code:_
 
   - Minimum supported Rust version is now 1.58 ([#977](https://github.com/cossacklabs/themis/pull/977), [#984](https://github.com/cossacklabs/themis/pull/984)).
 
+- **WasmThemis**
+
+  - Updated required `emsdk` version to 3.1.47 ([#1036](https://github.com/cossacklabs/themis/pull/1036)).
+  - WasmThemis now works with Node v18 and v20 ([#1036](https://github.com/cossacklabs/themis/pull/1036)).
+
 - **WebAssembly**
 
   - Node.js v8 is no longer supported ([#901](https://github.com/cossacklabs/themis/pull/901)).

src/wrappers/themis/wasm/emscripten/VERSION

@@ -1 +1 @@
-3.0.0
+3.1.47

src/wrappers/themis/wasm/emscripten/exported_functions.json

@@ -0,0 +1 @@
+["_malloc", "_free"]

src/wrappers/themis/wasm/wasmthemis.mk

@@ -19,15 +19,17 @@ WASM_PATH = src/wrappers/themis/wasm
 WASM_SRC += $(WASM_PATH)/package.json
 WASM_SRC += $(wildcard $(WASM_PATH)/src/*.js)
 
-WASM_RUNTIME = $(abspath $(WASM_PATH)/emscripten/runtime_exports.json)
-WASM_PRE_JS  = $(abspath $(WASM_PATH)/emscripten/pre.js)
+WASM_RUNTIME            = $(abspath $(WASM_PATH)/emscripten/runtime_exports.json)
+WASM_PRE_JS             = $(abspath $(WASM_PATH)/emscripten/pre.js)
+WASM_EXPORTED_FUNCTIONS = $(abspath $(WASM_PATH)/emscripten/exported_functions.json)
 
 WASM_PACKAGE = $(BIN_PATH)/wasm-themis.tgz
 
 $(BIN_PATH)/libthemis.js: LDFLAGS += -s EXPORTED_RUNTIME_METHODS=@$(WASM_RUNTIME)
 $(BIN_PATH)/libthemis.js: LDFLAGS += -s ALLOW_TABLE_GROWTH
 $(BIN_PATH)/libthemis.js: LDFLAGS += -s MODULARIZE=1
 $(BIN_PATH)/libthemis.js: LDFLAGS += -s ALLOW_MEMORY_GROWTH=1
+$(BIN_PATH)/libthemis.js: LDFLAGS += -s EXPORTED_FUNCTIONS=@$(WASM_EXPORTED_FUNCTIONS)
 # FIXME(ilammy, 2020-11-29): rely in EMSCRIPTEN_KEEPALIVE instead of LINKABLE
 # For some reason existing EMSCRIPTEN_KEEPALIVE macros do not work and without
 # LINKABLE flag wasm-ld ends up stripping *all* Themis functions from "*.wasm"

tests/soter/soter_sym_test.c

@@ -605,7 +605,7 @@ static void test_invalid_params(void)
     }
 }
 
-void run_soter_sym_test()
+void run_soter_sym_test(void)
 {
     testsuite_enter_suite("soter sym");
     //  testsuite_run_test(soter_sym_test);