From 647fd3141a66ece0682ec8de657b54791fc03571 Mon Sep 17 00:00:00 2001
From: Christoph Otter <chris@confio.gmbh>
Date: Tue, 21 Jan 2025 18:51:18 +0100
Subject: [PATCH 1/2] Fix unchecked flag

---
 internal/api/lib.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/internal/api/lib.go b/internal/api/lib.go
index 2b71adc1c..ab78c8197 100644
--- a/internal/api/lib.go
+++ b/internal/api/lib.go
@@ -101,7 +101,7 @@ func StoreCodeUnchecked(cache Cache, wasm []byte) ([]byte, error) {
 	w := makeView(wasm)
 	defer runtime.KeepAlive(wasm)
 	errmsg := uninitializedUnmanagedVector()
-	checksum, err := C.store_code(cache.ptr, w, cbool(true), cbool(true), &errmsg)
+	checksum, err := C.store_code(cache.ptr, w, cbool(false), cbool(true), &errmsg)
 	if err != nil {
 		return nil, errorWithMessage(err, errmsg)
 	}

From 2481812d6afcf480abfc8b8808579674d39854b4 Mon Sep 17 00:00:00 2001
From: Christoph Otter <chris@confio.gmbh>
Date: Wed, 22 Jan 2025 12:37:25 +0100
Subject: [PATCH 2/2] Add test for StoreCodeUnchecked

---
 internal/api/lib_test.go | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/internal/api/lib_test.go b/internal/api/lib_test.go
index 90c55a8c2..4ced04b07 100644
--- a/internal/api/lib_test.go
+++ b/internal/api/lib_test.go
@@ -274,6 +274,28 @@ func TestStoreCodeUnchecked(t *testing.T) {
 	require.Equal(t, wasm, code)
 }
 
+func TestStoreCodeUncheckedWorksWithInvalidWasm(t *testing.T) {
+	cache, cleanup := withCache(t)
+	defer cleanup()
+
+	wasm, err := os.ReadFile("../../testdata/hackatom.wasm")
+	require.NoError(t, err)
+
+	// Look for "interface_version_8" in the wasm file and replace it with "interface_version_9".
+	// This makes the wasm file invalid.
+	wasm = bytes.Replace(wasm, []byte("interface_version_8"), []byte("interface_version_9"), 1)
+
+	// StoreCode should fail
+	_, err = StoreCode(cache, wasm, true)
+	require.ErrorContains(t, err, "Wasm contract has unknown interface_version_* marker export")
+
+	// StoreCodeUnchecked should not fail
+	checksum, err := StoreCodeUnchecked(cache, wasm)
+	require.NoError(t, err)
+	expectedChecksum := sha256.Sum256(wasm)
+	assert.Equal(t, expectedChecksum[:], checksum)
+}
+
 func TestPin(t *testing.T) {
 	cache, cleanup := withCache(t)
 	defer cleanup()