Merge "Migrate HostClipboardMonitor to virtio-vsock" (7265a875) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/clipboard/ClipboardService.java

+51 −26

Original line number	Diff line number	Diff line
		@@ -52,6 +52,10 @@ import android.os.SystemProperties;
		import android.os.UserHandle;
		import android.os.UserManager;
		import android.provider.Settings;
		import android.system.ErrnoException;
		import android.system.Os;
		import android.system.OsConstants;
		import android.system.VmSocketAddress;
		import android.text.TextUtils;
		import android.util.Slog;
		import android.util.SparseArray;
		@@ -63,8 +67,11 @@ import com.android.server.contentcapture.ContentCaptureManagerInternal;
		import com.android.server.uri.UriGrantsManagerInternal;
		import com.android.server.wm.WindowManagerInternal;

		import java.io.IOException;
		import java.io.RandomAccessFile;
		import java.io.FileDescriptor;
		import java.io.InterruptedIOException;
		import java.net.SocketException;
		import java.nio.ByteBuffer;
		import java.nio.ByteOrder;
		import java.util.Arrays;
		import java.util.HashSet;
		import java.util.List;
		@@ -76,10 +83,10 @@ class HostClipboardMonitor implements Runnable {
		void onHostClipboardUpdated(String contents);
		}

		private RandomAccessFile mPipe = null;
		private FileDescriptor mPipe = null;
		private HostClipboardCallback mHostClipboardCallback;
		private static final String PIPE_NAME = "pipe:clipboard";
		private static final String PIPE_DEVICE = "/dev/qemu_pipe";
		private static final int HOST_PORT = 5000;

		private static byte[] createOpenHandshake() {
		// String.getBytes doesn't include the null terminator,
		@@ -93,40 +100,57 @@ class HostClipboardMonitor implements Runnable {

		private boolean openPipe() {
		try {
		final RandomAccessFile pipe = new RandomAccessFile(PIPE_DEVICE, "rw");
		final FileDescriptor fd = Os.socket(OsConstants.AF_VSOCK, OsConstants.SOCK_STREAM, 0);

		try {
		pipe.write(createOpenHandshake());
		mPipe = pipe;
		Os.connect(fd, new VmSocketAddress(HOST_PORT, OsConstants.VMADDR_CID_HOST));

		final byte[] handshake = createOpenHandshake();
		Os.write(fd, handshake, 0, handshake.length);
		mPipe = fd;
		return true;
		} catch (IOException ignore) {
		pipe.close();
		} catch (ErrnoException \| SocketException \| InterruptedIOException e) {
		Os.close(fd);
		}
		} catch (IOException ignore) {
		} catch (ErrnoException e) {
		}

		return false;
		}

		private void closePipe() {
		try {
		final RandomAccessFile pipe = mPipe;
		final FileDescriptor fd = mPipe;
		mPipe = null;
		if (pipe != null) {
		pipe.close();
		if (fd != null) {
		Os.close(fd);
		}
		} catch (IOException ignore) {
		} catch (ErrnoException ignore) {
		}
		}

		private byte[] receiveMessage() throws IOException {
		final int size = Integer.reverseBytes(mPipe.readInt());
		final byte[] receivedData = new byte[size];
		mPipe.readFully(receivedData);
		return receivedData;
		private byte[] receiveMessage() throws ErrnoException, InterruptedIOException {
		final byte[] lengthBits = new byte[4];
		Os.read(mPipe, lengthBits, 0, lengthBits.length);

		final ByteBuffer bb = ByteBuffer.wrap(lengthBits);
		bb.order(ByteOrder.LITTLE_ENDIAN);
		final int msgLen = bb.getInt();

		final byte[] msg = new byte[msgLen];
		Os.read(mPipe, msg, 0, msg.length);

		return msg;
		}

		private void sendMessage(byte[] message) throws IOException {
		mPipe.writeInt(Integer.reverseBytes(message.length));
		mPipe.write(message);
		private void sendMessage(byte[] msg) throws ErrnoException, InterruptedIOException {
		final byte[] lengthBits = new byte[4];
		final ByteBuffer bb = ByteBuffer.wrap(lengthBits);
		bb.order(ByteOrder.LITTLE_ENDIAN);
		bb.putInt(msg.length);

		Os.write(mPipe, lengthBits, 0, lengthBits.length);
		Os.write(mPipe, msg, 0, msg.length);
		}

		public HostClipboardMonitor(HostClipboardCallback cb) {
		@@ -147,9 +171,10 @@ class HostClipboardMonitor implements Runnable {
		final byte[] receivedData = receiveMessage();
		mHostClipboardCallback.onHostClipboardUpdated(
		new String(receivedData));
		} catch (IOException e) {
		} catch (ErrnoException \| InterruptedIOException e) {
		closePipe();
		} catch (InterruptedException e) {}
		} catch (InterruptedException e) {
		}
		}
		}

		@@ -158,7 +183,7 @@ class HostClipboardMonitor implements Runnable {
		if (mPipe != null) {
		sendMessage(content.getBytes());
		}
		} catch(IOException e) {
		} catch (ErrnoException \| InterruptedIOException e) {
		Slog.e("HostClipboardMonitor",
		"Failed to set host clipboard " + e.getMessage());
		}