Add support for android devices via ADB

ADB is expected to be installed and working on the exporter and client machines.
For screensharing "scrcpy" needs to be installed on the client.

Signed-off-by: Sebastian Goscik <[email protected]>

doc/configuration.rst

@@ -1261,6 +1261,31 @@ Arguments:
 Used by:
   - none
 
+ADB
+~~~
+
+ADBDevice
++++++++++
+
+:any:`ADBDevice` describes a local adb device connected via USB.
+
+Arguments:
+ - serial (str): The serial number of the device as shown by adb
+
+NetworkADBDevice
+++++++++++++++++
+
+A :any:`NetworkADBDevice` describes a `AdbDevice`_ available on a remote computer.
+
+RemoteADBDevice
++++++++++++++++
+
+:any:`RemoteADBDevice` describes a adb device available via TCP.
+
+Arguments:
+ - host (str): The address of the TCP ADP device
+ - port (int): The TCP port ADB is exposed on the device
+
 Providers
 ~~~~~~~~~
 Providers describe directories that are accessible by the target over a
@@ -3281,6 +3306,27 @@ Implements:
 Arguments:
   - None
 
+ADBDriver
+~~~~~~~~~
+The :any:`ADBDriver` allows interaction with ADB devices. It allows the 
+execution of commands, transfer of files, and rebooting of the device.
+
+It can interact with both USB and TCP adb devices.
+
+Binds to:
+  iface:
+    - `ADBDevice`_
+    - `NetworkADBDevice`_
+    - `RemoteADBDevice`_
+
+Implements:
+  - :any:`CommandProtocol`
+  - :any:`FileTransferProtocol`
+  - :any:`ResetProtocol`
+
+Arguments:
+  - None
+
 .. _conf-strategies:
 
 Strategies

labgrid/driver/__init__.py

@@ -48,3 +48,4 @@
 from .deditecrelaisdriver import DeditecRelaisDriver
 from .dediprogflashdriver import DediprogFlashDriver
 from .httpdigitaloutput import HttpDigitalOutputDriver
+from .adb import ADBDriver

labgrid/driver/adb.py

@@ -0,0 +1,113 @@
+import shlex
+import subprocess
+
+import attr
+
+from ..factory import target_factory
+from ..protocol import CommandProtocol, FileTransferProtocol, ResetProtocol
+from ..resource.adb import ADBDevice, NetworkADBDevice, RemoteADBDevice
+from ..step import step
+from ..util.proxy import proxymanager
+from .commandmixin import CommandMixin
+from .common import Driver
+
+# Default timeout for adb commands, in seconds
+ADB_TIMEOUT = 10
+
+
+@target_factory.reg_driver
+@attr.s(eq=False)
+class ADBDriver(CommandMixin, Driver, CommandProtocol, FileTransferProtocol, ResetProtocol):
+    """ADB driver to execute commands, transfer files and reset devices via ADB."""
+
+    bindings = {"device": {"ADBDevice", "NetworkADBDevice", "RemoteADBDevice"}}
+
+    def __attrs_post_init__(self):
+        super().__attrs_post_init__()
+        if self.target.env:
+            self.tool = self.target.env.config.get_tool("adb")
+        else:
+            self.tool = "adb"
+
+        if isinstance(self.device, ADBDevice):
+            self._base_command = [self.tool, "-s", self.device.serial]
+
+        elif isinstance(self.device, NetworkADBDevice):
+            self._host, self._port = proxymanager.get_host_and_port(self.device)
+            self._base_command = [self.tool, "-H", self._host, "-P", str(self._port), "-s", self.device.serial]
+
+        elif isinstance(self.device, RemoteADBDevice):
+            self._host, self._port = proxymanager.get_host_and_port(self.device)
+            # ADB does not automatically remove a network device from its
+            # devices list when the connection is broken by the remote, so the
+            # adb connection may have gone "stale", resulting in adb blocking
+            # indefinitely when making calls to the device. To avoid this,
+            # always disconnect first.
+            subprocess.run(
+                ["adb", "disconnect", f"{self._host}:{str(self._port)}"],
+                stderr=subprocess.DEVNULL,
+                timeout=ADB_TIMEOUT,
+            )
+            subprocess.run(
+                ["adb", "connect", f"{self._host}:{str(self._port)}"], stdout=subprocess.DEVNULL, timeout=ADB_TIMEOUT
+            )  # Connect adb client to TCP adb device
+            self._base_command = [self.tool, "-s", f"{self._host}:{str(self._port)}"]
+
+    def on_deactivate(self):
+        if isinstance(self.device, RemoteADBDevice):
+            # Clean up TCP adb device once the driver is deactivated
+            subprocess.Popen(["adb", "disconnect", f"{self._host}:{str(self._port)}"], stderr=subprocess.DEVNULL).wait(
+                timeout=ADB_TIMEOUT
+            )
+
+    # Command Protocol
+
+    def _run(self, cmd, *, timeout=30.0, codec="utf-8", decodeerrors="strict"):
+        cmd = [*self._base_command, "shell", *shlex.split(cmd)]
+        result = subprocess.run(
+            cmd,
+            text=True,  # Automatically decode using default UTF-8
+            capture_output=True,
+            timeout=timeout,
+        )
+        return (
+            result.stdout.splitlines(),
+            result.stderr.splitlines(),
+            result.returncode,
+        )
+
+    @Driver.check_active
+    @step(args=["cmd"], result=True)
+    def run(self, cmd, timeout=30.0, codec="utf-8", decodeerrors="strict"):
+        return self._run(cmd, timeout=timeout, codec=codec, decodeerrors=decodeerrors)
+
+    @step()
+    def get_status(self):
+        return 1
+
+    # File Transfer Protocol
+
+    @Driver.check_active
+    @step(args=["filename", "remotepath", "timeout"])
+    def put(self, filename: str, remotepath: str, timeout: float = ADB_TIMEOUT):
+        subprocess.run([*self._base_command, "push", filename, remotepath], timeout=timeout)
+
+    @Driver.check_active
+    @step(args=["filename", "destination", "timeout"])
+    def get(self, filename: str, destination: str, timeout: float = ADB_TIMEOUT):
+        subprocess.run([*self._base_command, "pull", filename, destination], timeout=timeout)
+
+    # Reset Protocol
+
+    @Driver.check_active
+    @step(args=["mode"])
+    def reset(self, mode=None):
+        valid_modes = ["bootloader", "recovery", "sideload", "sideload-auto-reboot"]
+        cmd = [*self._base_command, "reboot"]
+
+        if mode:
+            if mode not in valid_modes:
+                raise ValueError(f"{mode} must be one of: {', '.join(valid_modes)}")
+            cmd.append(mode)
+
+        subprocess.run(cmd, timeout=ADB_TIMEOUT)

labgrid/remote/client.py

@@ -18,7 +18,7 @@
 import json
 import itertools
 from textwrap import indent
-from socket import gethostname
+from socket import gethostname, gethostbyname
 from getpass import getuser
 from collections import defaultdict, OrderedDict
 from datetime import datetime
@@ -44,6 +44,7 @@
 from ..resource.remote import RemotePlaceManager, RemotePlace
 from ..util import diff_dict, flat_dict, dump, atomic_replace, labgrid_version, Timeout
 from ..util.proxy import proxymanager
+from ..util.ssh import sshmanager
 from ..util.helper import processwrapper
 from ..driver import Mode, ExecutionError
 from ..logging import basicConfig, StepLogger
@@ -1530,6 +1531,85 @@ async def export(self, place, target):
     def print_version(self):
         print(labgrid_version())
 
+    def adb(self):
+        place = self.get_acquired_place()
+        target = self._get_target(place)
+        name = self.args.name
+        adb_cmd = ["adb"]
+
+        from ..resource.adb import NetworkADBDevice, RemoteADBDevice
+
+        for resource in target.resources:
+            if name and resource.name != name:
+                continue
+            if isinstance(resource, NetworkADBDevice):
+                host, port = proxymanager.get_host_and_port(resource)
+                adb_cmd = ["adb", "-H", host, "-P", str(port), "-s", resource.serial]
+                break
+            elif isinstance(resource, RemoteADBDevice):
+                host, port = proxymanager.get_host_and_port(resource)
+                # ADB does not automatically remove a network device from its
+                # devices list when the connection is broken by the remote, so the
+                # adb connection may have gone "stale", resulting in adb blocking
+                # indefinitely when making calls to the device. To avoid this,
+                # always disconnect first.
+                subprocess.run(["adb", "disconnect", f"{host}:{str(port)}"], stderr=subprocess.DEVNULL, timeout=10)
+                subprocess.run(
+                    ["adb", "connect", f"{host}:{str(port)}"], stdout=subprocess.DEVNULL, timeout=10
+                )  # Connect adb client to TCP adb device
+                adb_cmd = ["adb", "-s", f"{host}:{str(port)}"]]
+                break
+
+        adb_cmd += self.args.leftover
+        subprocess.run(adb_cmd)
+
+    def scrcpy(self):
+        place = self.get_acquired_place()
+        target = self._get_target(place)
+        name = self.args.name
+        scrcpy_cmd = ["scrcpy"]
+        env_var = os.environ.copy()
+
+        from ..resource.adb import NetworkADBDevice, RemoteADBDevice
+
+        for resource in target.resources:
+            if name and resource.name != name:
+                continue
+            if isinstance(resource, NetworkADBDevice):
+                host, adb_port = proxymanager.get_host_and_port(resource)
+                ip_addr = gethostbyname(host)
+                env_var["ADB_SERVER_SOCKET"] = f"tcp:{ip_addr}:{adb_port}"
+
+                scrcpy_cmd = [
+                    "scrcpy",
+                    "--port",
+                    "27183",
+                    "-s",
+                    resource.serial,
+                ]
+
+                # If a proxy is required, we need to setup a ssh port forward for the port
+                # (27183) scrcpy will use to send data along side the adb port
+                if resource.extra.get("proxy_required") or self.args.proxy:
+                    proxy = resource.extra.get("proxy")
+                    scrcpy_cmd.append(f"--tunnel-host={ip_addr}")
+                    scrcpy_cmd.append(f"--tunnel-port={sshmanager.request_forward(proxy, host, 27183)}")
+                break
+
+            elif isinstance(resource, RemoteADBDevice):
+                host, port = proxymanager.get_host_and_port(resource)
+                # ADB does not automatically remove a network device from its
+                # devices list when the connection is broken by the remote, so the
+                # adb connection may have gone "stale", resulting in adb blocking
+                # indefinitely when making calls to the device. To avoid this,
+                # always disconnect first.
+                subprocess.run(["adb", "disconnect", f"{host}:{str(port)}"], stderr=subprocess.DEVNULL, timeout=10)
+                scrcpy_cmd = ["scrcpy", f"--tcpip={host}:{str(port)}"]
+                break
+
+        scrcpy_cmd += self.args.leftover
+        subprocess.run(scrcpy_cmd, env=env_var)
+
 
 _loop: ContextVar["asyncio.AbstractEventLoop | None"] = ContextVar("_loop", default=None)
 
@@ -2031,9 +2111,17 @@ def main():
     subparser = subparsers.add_parser("version", help="show version")
     subparser.set_defaults(func=ClientSession.print_version)
 
+    subparser = subparsers.add_parser("adb", help="Run Android Debug Bridge")
+    subparser.add_argument("--name", "-n", help="optional resource name")
+    subparser.set_defaults(func=ClientSession.adb)
+
+    subparser = subparsers.add_parser("scrcpy", help="Run scrcpy to remote control an android device")
+    subparser.add_argument("--name", "-n", help="optional resource name")
+    subparser.set_defaults(func=ClientSession.scrcpy)
+
     # make any leftover arguments available for some commands
     args, leftover = parser.parse_known_args()
-    if args.command not in ["ssh", "rsync", "forward"]:
+    if args.command not in ["ssh", "rsync", "forward", "adb", "scrcpy"]:
         args = parser.parse_args()
     else:
         args.leftover = leftover

labgrid/remote/exporter.py

@@ -773,6 +773,85 @@ def _get_params(self):
 exports["YKUSHPowerPort"] = YKUSHPowerPortExport
 
 
+@attr.s(eq=False)
+class ADBExport(ResourceExport):
+    """ResourceExport for Android Debug Bridge Devices."""
+
+    def __attrs_post_init__(self):
+        super().__attrs_post_init__()
+        local_cls_name = self.cls
+        self.data["cls"] = f"Network{local_cls_name}"
+        from ..resource import adb
+
+        local_cls = getattr(adb, local_cls_name)
+        self.local = local_cls(target=None, name=None, **self.local_params)
+        self.child = None
+        self.port = None
+
+    def __del__(self):
+        if self.child is not None:
+            self.stop()
+
+    def _get_params(self):
+        """Helper function to return parameters"""
+        return {
+            "host": self.host,
+            "port": self.port,
+            "serial": self.local.serial,
+        }
+
+    def _start(self, start_params):
+        """Start `adb server` subprocess"""
+        assert self.local.avail
+        self.port = get_free_port()
+
+        # If the exporter is run on the same machine as clients, and the client uses ADB to connect to TCP
+        # clients it will latch onto USB devices. This prevents the exporter from ever starting adb servers
+        # for USB devices.
+        # This will kill the global server to work around this but won't affect the --one-device servers
+        # started by the exporter
+        subprocess.Popen(["adb", "kill-server"]).wait()
+
+        cmd = [
+            "adb",
+            "server",
+            "nodaemon",
+            "-a",
+            "-P",
+            str(self.port),
+            "--one-device",
+            self.local.serial,
+        ]
+        self.logger.info("Starting adb server with: %s", " ".join(cmd))
+        self.child = subprocess.Popen(cmd)
+        try:
+            self.child.wait(timeout=0.5)
+            raise ExporterError(f"adb for {self.local.serial} exited immediately")
+        except subprocess.TimeoutExpired:
+            # good, adb didn't exit immediately
+            pass
+        self.logger.info("started adb for %s on port %s", self.local.serial, self.port)
+
+    def _stop(self, start_params):
+        assert self.child
+        child = self.child
+        self.child = None
+        port = self.port
+        self.port = None
+        child.terminate()
+        try:
+            child.wait(2.0)  # Give adb a chance to close
+        except subprocess.TimeoutExpired:
+            self.logger.warning("adb for %s still running after SIGTERM", self.local.serial)
+            log_subprocess_kernel_stack(self.logger, child)
+            child.kill()
+            child.wait(1.0)
+        self.logger.info("stopped adb for %s on port %d", self.local.serial, port)
+
+
+exports["ADBDevice"] = ADBExport
+
+
 class Exporter:
     def __init__(self, config) -> None:
         """Set up internal datastructures on successful connection:

labgrid/resource/__init__.py

@@ -47,3 +47,4 @@
 from .httpdigitalout import HttpDigitalOutput
 from .sigrok import SigrokDevice
 from .fastboot import AndroidNetFastboot
+from .adb import NetworkADBDevice, ADBDevice