Merge "libbinder_ndk: allow disabling interface token" am: 3aeebcf74e am: 0c83a94137 (437a5e70) · Commits · e / os / android_frameworks_native-old

libs/binder/ndk/ibinder.cpp

+11 −2

Original line number	Diff line number	Diff line
		@@ -172,7 +172,7 @@ status_t ABBinder::dump(int fd, const ::android::Vector<String16>& args) {
		status_t ABBinder::onTransact(transaction_code_t code, const Parcel& data, Parcel* reply,
		binder_flags_t flags) {
		if (isUserCommand(code)) {
		if (!data.checkInterface(this)) {
		if (getClass()->writeHeader && !data.checkInterface(this)) {
		return STATUS_BAD_TYPE;
		}

		@@ -354,6 +354,12 @@ void AIBinder_Class_setOnDump(AIBinder_Class* clazz, AIBinder_onDump onDump) {
		clazz->onDump = onDump;
		}

		void AIBinder_Class_disableInterfaceTokenHeader(AIBinder_Class* clazz) {
		CHECK(clazz != nullptr) << "disableInterfaceTokenHeader requires non-null clazz";

		clazz->writeHeader = false;
		}

		void AIBinder_Class_setHandleShellCommand(AIBinder_Class* clazz,
		AIBinder_handleShellCommand handleShellCommand) {
		CHECK(clazz != nullptr) << "setHandleShellCommand requires non-null clazz";
		@@ -606,7 +612,10 @@ binder_status_t AIBinder_prepareTransaction(AIBinder* binder, AParcel** in) {
		*in = new AParcel(binder);
		(*in)->get()->markForBinder(binder->getBinder());

		status_t status = (*in)->get()->writeInterfaceToken(clazz->getInterfaceDescriptor());
		status_t status = android::OK;
		if (clazz->writeHeader) {
		status = (*in)->get()->writeInterfaceToken(clazz->getInterfaceDescriptor());
		}
		binder_status_t ret = PruneStatusT(status);

		if (ret != STATUS_OK) {

+3 −0

Original line number	Diff line number	Diff line
		@@ -116,6 +116,9 @@ struct AIBinder_Class {
		const ::android::String16& getInterfaceDescriptor() const { return mWideInterfaceDescriptor; }
		const char* getInterfaceDescriptorUtf8() const { return mInterfaceDescriptor.c_str(); }

		// whether a transaction header should be written
		bool writeHeader = true;

		// required to be non-null, implemented for every class
		const AIBinder_Class_onCreate onCreate = nullptr;
		const AIBinder_Class_onDestroy onDestroy = nullptr;

+15 −0

Original line number	Diff line number	Diff line
		@@ -218,6 +218,21 @@ typedef binder_status_t (AIBinder_onDump)(AIBinder binder, int fd, const char*
		*/
		void AIBinder_Class_setOnDump(AIBinder_Class* clazz, AIBinder_onDump onDump) __INTRODUCED_IN(29);

		/**
		* This tells users of this class not to use a transaction header. By default, libbinder_ndk users
		* read/write transaction headers implicitly (in the SDK, this must be manually written by
		* android.os.Parcel#writeInterfaceToken, and it is read/checked with
		* android.os.Parcel#enforceInterface). This method is provided in order to talk to legacy code
		* which does not write an interface token. When this is disabled, type safety is reduced, so you
		* must have a separate way of determining the binder you are talking to is the right type. Must
		* be called before any instance of the class is created.
		*
		* Available since API level 32.
		*
		* \param clazz class to disable interface header on.
		*/
		void AIBinder_Class_disableInterfaceTokenHeader(AIBinder_Class* clazz) __INTRODUCED_IN(32);

		/**
		* Creates a new binder object of the appropriate class.
		*

+5 −0

Original line number	Diff line number	Diff line
		@@ -141,6 +141,11 @@ LIBBINDER_NDK31 { # introduced=31
		AParcel_reset;
		};

		LIBBINDER_NDK32 { # introduced=32
		global:
		AIBinder_Class_disableInterfaceTokenHeader;
		};

		LIBBINDER_NDK_PLATFORM {
		global:
		AParcel_getAllowFds;