Adding rust wrapper lib for libfakeServiceManager
rust lib which setup libfakeservicemanager and sets it as default
is being added here. It uses c++ backend underneath.
Test: m libfakeservicemanager_rs
Test: atest fakeservicemanager_test
Bug: 296909761
Change-Id: Ia1e7ebe5174f05fb4f8673a2feaad9b1171eb60c
diff --git a/libs/fakeservicemanager/Android.bp b/libs/fakeservicemanager/Android.bp
index 96dcce1..3823393 100644
--- a/libs/fakeservicemanager/Android.bp
+++ b/libs/fakeservicemanager/Android.bp
@@ -17,6 +17,7 @@
shared_libs: [
"libbinder",
"libutils",
+ "liblog",
],
target: {
darwin: {
@@ -40,3 +41,41 @@
static_libs: ["libgmock"],
local_include_dirs: ["include"],
}
+
+rust_bindgen {
+ name: "libfakeservicemanager_bindgen",
+ crate_name: "fakeservicemanager_bindgen",
+ host_supported: true,
+ wrapper_src: "rust/wrappers/FakeServiceManagerWrapper.hpp",
+ source_stem: "bindings",
+ visibility: [":__subpackages__"],
+ bindgen_flags: [
+ "--allowlist-function",
+ "setupFakeServiceManager",
+ "--allowlist-function",
+ "clearFakeServiceManager",
+ ],
+ shared_libs: [
+ "libc++",
+ "libbinder",
+ "libfakeservicemanager",
+ ],
+}
+
+rust_library {
+ name: "libfakeservicemanager_rs",
+ crate_name: "fakeservicemanager_rs",
+ host_supported: true,
+ srcs: [
+ "rust/src/lib.rs",
+ ],
+ shared_libs: [
+ "libc++",
+ "libfakeservicemanager",
+ ],
+ rustlibs: [
+ "libfakeservicemanager_bindgen",
+ ],
+ lints: "none",
+ clippy_lints: "none",
+}
diff --git a/libs/fakeservicemanager/FakeServiceManager.cpp b/libs/fakeservicemanager/FakeServiceManager.cpp
index 80661c1..241c866 100644
--- a/libs/fakeservicemanager/FakeServiceManager.cpp
+++ b/libs/fakeservicemanager/FakeServiceManager.cpp
@@ -16,6 +16,10 @@
#include "fakeservicemanager/FakeServiceManager.h"
+using android::sp;
+using android::FakeServiceManager;
+using android::setDefaultServiceManager;
+
namespace android {
FakeServiceManager::FakeServiceManager() {}
@@ -123,3 +127,24 @@
mNameToService.clear();
}
} // namespace android
+
+[[clang::no_destroy]] static sp<FakeServiceManager> gFakeServiceManager;
+[[clang::no_destroy]] static std::once_flag gSmOnce;
+
+extern "C" {
+
+// Setup FakeServiceManager to mock dependencies in test using this API for rust backend
+void setupFakeServiceManager() {
+ /* Create a FakeServiceManager instance and add required services */
+ std::call_once(gSmOnce, [&]() {
+ gFakeServiceManager = new FakeServiceManager();
+ android::setDefaultServiceManager(gFakeServiceManager);
+ });
+}
+
+// Clear existing services from Fake SM for rust backend
+void clearFakeServiceManager() {
+ LOG_ALWAYS_FATAL_IF(gFakeServiceManager == nullptr, "Fake Service Manager is not available. Forgot to call setupFakeServiceManager?");
+ gFakeServiceManager->clear();
+}
+} //extern "C"
\ No newline at end of file
diff --git a/libs/fakeservicemanager/rust/src/lib.rs b/libs/fakeservicemanager/rust/src/lib.rs
new file mode 100644
index 0000000..5b7e756
--- /dev/null
+++ b/libs/fakeservicemanager/rust/src/lib.rs
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+use fakeservicemanager_bindgen::{clearFakeServiceManager, setupFakeServiceManager};
+// Setup FakeServiceManager for testing and fuzzing purposes
+pub fn setup_fake_service_manager() {
+ unsafe {
+ // Safety: This API creates a new FakeSm object which will be always valid and sets up
+ // defaultServiceManager
+ setupFakeServiceManager();
+ }
+}
+
+// Setup FakeServiceManager for testing and fuzzing purposes
+pub fn clear_fake_service_manager() {
+ unsafe {
+ // Safety: This API clears all registered services with Fake SM. This should be only used
+ // setupFakeServiceManager is already called.
+ clearFakeServiceManager();
+ }
+}
diff --git a/libs/fakeservicemanager/rust/wrappers/FakeServiceManagerWrapper.hpp b/libs/fakeservicemanager/rust/wrappers/FakeServiceManagerWrapper.hpp
new file mode 100644
index 0000000..1f5923a
--- /dev/null
+++ b/libs/fakeservicemanager/rust/wrappers/FakeServiceManagerWrapper.hpp
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "fakeservicemanager/FakeServiceManager.h"
+
+extern "C" {
+ // Setup FakeServiceManager to mock dependencies in test using this API
+ void setupFakeServiceManager();
+
+ // Clear existing services from Fake SM.
+ void clearFakeServiceManager();
+} // extern "C"
diff --git a/libs/fakeservicemanager/test_sm.cpp b/libs/fakeservicemanager/test_sm.cpp
index 6fc21c6..cb6784c0 100644
--- a/libs/fakeservicemanager/test_sm.cpp
+++ b/libs/fakeservicemanager/test_sm.cpp
@@ -22,6 +22,7 @@
#include <binder/IServiceManager.h>
#include "fakeservicemanager/FakeServiceManager.h"
+#include "rust/wrappers/FakeServiceManagerWrapper.hpp"
using android::sp;
using android::BBinder;
@@ -31,6 +32,7 @@
using android::FakeServiceManager;
using android::String16;
using android::IServiceManager;
+using android::defaultServiceManager;
using testing::ElementsAre;
static sp<IBinder> getBinder() {
@@ -83,7 +85,7 @@
EXPECT_EQ(sm->getService(String16("foo")), service);
}
-TEST(GetService, NonExistant) {
+TEST(GetService, NonExistent) {
auto sm = new FakeServiceManager();
EXPECT_EQ(sm->getService(String16("foo")), nullptr);
@@ -108,7 +110,7 @@
String16("sd")));
}
-TEST(WaitForService, NonExistant) {
+TEST(WaitForService, NonExistent) {
auto sm = new FakeServiceManager();
EXPECT_EQ(sm->waitForService(String16("foo")), nullptr);
@@ -124,7 +126,7 @@
EXPECT_EQ(sm->waitForService(String16("foo")), service);
}
-TEST(IsDeclared, NonExistant) {
+TEST(IsDeclared, NonExistent) {
auto sm = new FakeServiceManager();
EXPECT_FALSE(sm->isDeclared(String16("foo")));
@@ -139,3 +141,31 @@
EXPECT_TRUE(sm->isDeclared(String16("foo")));
}
+
+TEST(SetupFakeServiceManager, NonExistent) {
+ setupFakeServiceManager();
+
+ EXPECT_EQ(defaultServiceManager()->getService(String16("foo")), nullptr);
+}
+
+TEST(SetupFakeServiceManager, GetExistingService) {
+ setupFakeServiceManager();
+ sp<IBinder> service = getBinder();
+
+ EXPECT_EQ(defaultServiceManager()->addService(String16("foo"), service, false /*allowIsolated*/,
+ IServiceManager::DUMP_FLAG_PRIORITY_DEFAULT), OK);
+
+ EXPECT_EQ(defaultServiceManager()->getService(String16("foo")), service);
+ clearFakeServiceManager();
+}
+
+TEST(ClearFakeServiceManager, GetServiceAfterClear) {
+ setupFakeServiceManager();
+
+ sp<IBinder> service = getBinder();
+ EXPECT_EQ(defaultServiceManager()->addService(String16("foo"), service, false /*allowIsolated*/,
+ IServiceManager::DUMP_FLAG_PRIORITY_DEFAULT), OK);
+
+ clearFakeServiceManager();
+ EXPECT_EQ(defaultServiceManager()->getService(String16("foo")), nullptr);
+}
\ No newline at end of file