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/*
* Copyright (C) 2022 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.
*/
package com.google.services.firebase.directaccess.client.device.remote.service.adb.forwardingdaemon
import com.android.adblib.AdbChannel
import com.android.adblib.AdbOutputChannel
import com.android.adblib.AdbServerSocket
import com.android.adblib.testing.FakeAdbSession
import com.android.adblib.testingutils.CoroutineTestUtils.runBlockingWithTimeout
import com.android.adblib.utils.createChildScope
import com.google.common.truth.Truth.assertThat
import java.nio.ByteBuffer
import java.nio.ByteOrder
import java.util.concurrent.atomic.AtomicReference
import kotlinx.coroutines.CoroutineExceptionHandler
import kotlinx.coroutines.launch
import org.junit.After
import org.junit.Before
import org.junit.Test
class ForwardingDaemonTest {
// A series of commands that come from the remote server that are handled by ForwardingDaemon
// The list is iterated and each command is written to the channel which is read by the
// ForwardingDaemon.
private val inputList =
listOf(
createByteBuffer(CNXN),
createByteBuffer(OPEN, 1),
createByteBuffer(WRTE, 1, 1, 4, "test"),
createByteBuffer(CLSE)
)
private val fakeAdbSession = FakeAdbSession()
private val fakeStreamOpener =
object : StreamOpener {
private val myStream =
object : Stream {
override fun sendWrite(command: WriteCommand) {
assertThat(String(command.payload)).isEqualTo("test")
}
override fun sendClose() = Unit
override suspend fun receiveCommand(command: StreamCommand) = Unit
}
override fun connect(forwardingDaemon: ForwardingDaemon) {
fakeAdbSession.scope.launch {
forwardingDaemon.onStateChanged(DeviceState.MISSING)
forwardingDaemon.onStateChanged(DeviceState.DEVICE)
}
}
override fun open(service: String, streamId: Int, adbOutputChannel: AdbOutputChannel) =
myStream
}
private lateinit var testSocket: AdbServerSocket
private lateinit var forwardingDaemon: ForwardingDaemonImpl
private val payloadAssertException = AtomicReference<Throwable>()
private val exceptionHandler = CoroutineExceptionHandler { _, t -> payloadAssertException.set(t) }
@Before
fun setUp(): Unit = runBlockingWithTimeout {
testSocket = fakeAdbSession.channelFactory.createServerSocket()
}
@After
fun tearDown() {
fakeAdbSession.close()
forwardingDaemon.close()
}
@Test
fun testForwardingDaemon() = runBlockingWithTimeout {
val childScope = fakeAdbSession.scope.createChildScope(context = exceptionHandler)
forwardingDaemon =
ForwardingDaemonImpl(fakeStreamOpener, childScope, fakeAdbSession) { testSocket }
assertThat(forwardingDaemon.devicePort).isEqualTo(-1)
forwardingDaemon.start()
assertThat(forwardingDaemon.devicePort).isEqualTo(testSocket.localAddress()?.port)
fakeAdbSession.channelFactory.connectSocket(testSocket.localAddress()!!).use { channel ->
inputList.forEach { channel.writeExactly(it) }
// CNXN respon
channel.assertCommand(CNXN)
// OPEN response
channel.assertCommand(OKAY, 1, 1)
// WRTE response
channel.assertCommand(OKAY, 1, 1)
}
assertThat(payloadAssertException.get()).isEqualTo(null)
}
}
private suspend fun AdbChannel.assertCommand(vararg values: Int) {
val buffer = ByteBuffer.allocate(24).order(ByteOrder.LITTLE_ENDIAN)
readExactly(buffer)
// Read payload so that next assertCommand call will read the next command written to channel
val payloadBuffer = ByteBuffer.allocate(buffer.getInt(12)).order(ByteOrder.LITTLE_ENDIAN)
readExactly(payloadBuffer)
values.forEachIndexed { index, value -> assertThat(buffer.getInt(index * 4)).isEqualTo(value) }
}
private fun createByteBuffer(
command: Int,
firstArg: Int = 0,
secondArg: Int = 0,
payloadSize: Int = 0,
payload: String? = null
): ByteBuffer {
val bufferSize = 24 + payloadSize
return ByteBuffer.allocate(bufferSize).apply {
order(ByteOrder.LITTLE_ENDIAN)
putInt(command)
putInt(firstArg)
putInt(secondArg)
putInt(payloadSize)
putInt(0) // crc - unused
putInt(0) // magic - unused
payload?.let { put(payload.toByteArray()) }
position(bufferSize)
flip()
}
}
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