Move libbinderwrapper to update_engine
libbinderwrapper is only used by update_engine, no point in keepting it
in system/core
Change-Id: I82735a0c78f663edf3e008250d93df30dd6732ee
diff --git a/libbinderwrapper/include/binderwrapper/binder_test_base.h b/libbinderwrapper/include/binderwrapper/binder_test_base.h
new file mode 100644
index 0000000..46eca3f
--- /dev/null
+++ b/libbinderwrapper/include/binderwrapper/binder_test_base.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+#ifndef SYSTEM_CORE_INCLUDE_BINDERWRAPPER_BINDER_TEST_BASE_H_
+#define SYSTEM_CORE_INCLUDE_BINDERWRAPPER_BINDER_TEST_BASE_H_
+
+#include <gtest/gtest.h>
+
+namespace android {
+
+class StubBinderWrapper;
+
+// Class that can be inherited from (or aliased via typedef/using) when writing
+// tests that use StubBinderManager.
+class BinderTestBase : public ::testing::Test {
+ public:
+ BinderTestBase();
+ ~BinderTestBase() override;
+
+ StubBinderWrapper* binder_wrapper() { return binder_wrapper_; }
+
+ protected:
+ StubBinderWrapper* binder_wrapper_; // Not owned.
+
+ private:
+ BinderTestBase(const BinderTestBase&) = delete;
+};
+
+} // namespace android
+
+#endif // SYSTEM_CORE_INCLUDE_BINDERWRAPPER_BINDER_TEST_BASE_H_
diff --git a/libbinderwrapper/include/binderwrapper/binder_wrapper.h b/libbinderwrapper/include/binderwrapper/binder_wrapper.h
new file mode 100644
index 0000000..fc5708b
--- /dev/null
+++ b/libbinderwrapper/include/binderwrapper/binder_wrapper.h
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+#ifndef SYSTEM_CORE_INCLUDE_BINDERWRAPPER_BINDER_WRAPPER_H_
+#define SYSTEM_CORE_INCLUDE_BINDERWRAPPER_BINDER_WRAPPER_H_
+
+#include <sys/types.h>
+
+#include <functional>
+#include <string>
+
+#include <utils/StrongPointer.h>
+
+namespace android {
+
+class BBinder;
+class IBinder;
+
+// Wraps libbinder to make it testable.
+// NOTE: Static methods of this class are not thread-safe.
+class BinderWrapper {
+ public:
+ virtual ~BinderWrapper() {}
+
+ // Creates and initializes the singleton (using a wrapper that communicates
+ // with the real binder system).
+ static void Create();
+
+ // Initializes |wrapper| as the singleton, taking ownership of it. Tests that
+ // want to inject their own wrappers should call this instead of Create().
+ static void InitForTesting(BinderWrapper* wrapper);
+
+ // Destroys the singleton. Must be called before calling Create() or
+ // InitForTesting() a second time.
+ static void Destroy();
+
+ // Returns the singleton instance previously created by Create() or set by
+ // InitForTesting().
+ static BinderWrapper* Get();
+
+ // Returns the singleton instance if it was previously created by Create() or
+ // set by InitForTesting(), or creates a new one by calling Create().
+ static BinderWrapper* GetOrCreateInstance();
+
+ // Gets the binder for communicating with the service identified by
+ // |service_name|, returning null immediately if it doesn't exist.
+ virtual sp<IBinder> GetService(const std::string& service_name) = 0;
+
+ // Registers |binder| as |service_name| with the service manager.
+ virtual bool RegisterService(const std::string& service_name,
+ const sp<IBinder>& binder) = 0;
+
+ // Creates a local binder object.
+ virtual sp<BBinder> CreateLocalBinder() = 0;
+
+ // Registers |callback| to be invoked when |binder| dies. If another callback
+ // is currently registered for |binder|, it will be replaced.
+ virtual bool RegisterForDeathNotifications(const sp<IBinder>& binder,
+ const std::function<void()>&) = 0;
+
+ // Unregisters the callback, if any, for |binder|.
+ virtual bool UnregisterForDeathNotifications(const sp<IBinder>& binder) = 0;
+
+ // When called while in a transaction, returns the caller's UID or PID.
+ virtual uid_t GetCallingUid() = 0;
+ virtual pid_t GetCallingPid() = 0;
+
+ private:
+ static BinderWrapper* instance_;
+};
+
+} // namespace android
+
+#endif // SYSTEM_CORE_INCLUDE_BINDERWRAPPER_BINDER_WRAPPER_H_
diff --git a/libbinderwrapper/include/binderwrapper/stub_binder_wrapper.h b/libbinderwrapper/include/binderwrapper/stub_binder_wrapper.h
new file mode 100644
index 0000000..2a7f77e
--- /dev/null
+++ b/libbinderwrapper/include/binderwrapper/stub_binder_wrapper.h
@@ -0,0 +1,132 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+#ifndef SYSTEM_CORE_INCLUDE_BINDERWRAPPER_STUB_BINDER_WRAPPER_H_
+#define SYSTEM_CORE_INCLUDE_BINDERWRAPPER_STUB_BINDER_WRAPPER_H_
+
+#include <map>
+#include <string>
+#include <vector>
+
+#include <binder/Binder.h>
+#include <binder/IBinder.h>
+#include <binderwrapper/binder_wrapper.h>
+
+namespace android {
+
+// Stub implementation of BinderWrapper for testing.
+//
+// Example usage:
+//
+// First, assuming a base IFoo binder interface, create a stub class that
+// derives from BnFoo to implement the receiver side of the communication:
+//
+// class StubFoo : public BnFoo {
+// public:
+// ...
+// status_t doSomething(int arg) override {
+// // e.g. save passed-in value for later inspection by tests.
+// return OK;
+// }
+// };
+//
+// Next, from your test code, inject a StubBinderManager either directly or by
+// inheriting from the BinderTestBase class:
+//
+// StubBinderWrapper* wrapper = new StubBinderWrapper();
+// BinderWrapper::InitForTesting(wrapper); // Takes ownership.
+//
+// Also from your test, create a StubFoo and register it with the wrapper:
+//
+// StubFoo* foo = new StubFoo();
+// sp<IBinder> binder(foo);
+// wrapper->SetBinderForService("foo", binder);
+//
+// The code being tested can now use the wrapper to get the stub and call it:
+//
+// sp<IBinder> binder = BinderWrapper::Get()->GetService("foo");
+// CHECK(binder.get());
+// sp<IFoo> foo = interface_cast<IFoo>(binder);
+// CHECK_EQ(foo->doSomething(3), OK);
+//
+// To create a local BBinder object, production code can call
+// CreateLocalBinder(). Then, a test can get the BBinder's address via
+// local_binders() to check that they're passed as expected in binder calls.
+//
+class StubBinderWrapper : public BinderWrapper {
+ public:
+ StubBinderWrapper();
+ ~StubBinderWrapper() override;
+
+ const std::vector<sp<BBinder>>& local_binders() const {
+ return local_binders_;
+ }
+ void clear_local_binders() { local_binders_.clear(); }
+
+ void set_calling_uid(uid_t uid) { calling_uid_ = uid; }
+ void set_calling_pid(pid_t pid) { calling_pid_ = pid; }
+
+ // Sets the binder to return when |service_name| is passed to GetService() or
+ // WaitForService().
+ void SetBinderForService(const std::string& service_name,
+ const sp<IBinder>& binder);
+
+ // Returns the binder previously registered for |service_name| via
+ // RegisterService(), or null if the service hasn't been registered.
+ sp<IBinder> GetRegisteredService(const std::string& service_name) const;
+
+ // Run the calback in |death_callbacks_| corresponding to |binder|.
+ void NotifyAboutBinderDeath(const sp<IBinder>& binder);
+
+ // BinderWrapper:
+ sp<IBinder> GetService(const std::string& service_name) override;
+ bool RegisterService(const std::string& service_name,
+ const sp<IBinder>& binder) override;
+ sp<BBinder> CreateLocalBinder() override;
+ bool RegisterForDeathNotifications(const sp<IBinder>& binder,
+ const std::function<void()>& callback) override;
+ bool UnregisterForDeathNotifications(const sp<IBinder>& binder) override;
+ uid_t GetCallingUid() override;
+ pid_t GetCallingPid() override;
+
+ private:
+ using ServiceMap = std::map<std::string, sp<IBinder>>;
+
+ // Map from service name to associated binder handle. Used by GetService() and
+ // WaitForService().
+ ServiceMap services_to_return_;
+
+ // Map from service name to associated binder handle. Updated by
+ // RegisterService().
+ ServiceMap registered_services_;
+
+ // Local binders returned by CreateLocalBinder().
+ std::vector<sp<BBinder>> local_binders_;
+
+ // Map from binder handle to the callback that should be invoked on binder
+ // death.
+ std::map<sp<IBinder>, std::function<void()>> death_callbacks_;
+
+ // Values to return from GetCallingUid() and GetCallingPid();
+ uid_t calling_uid_;
+ pid_t calling_pid_;
+
+ StubBinderWrapper(const StubBinderWrapper&) = delete;
+};
+
+} // namespace android
+
+#endif // SYSTEM_CORE_INCLUDE_BINDERWRAPPER_STUB_BINDER_WRAPPER_H_