329 lines
13 KiB
Python
Executable file
329 lines
13 KiB
Python
Executable file
#!/usr/bin/python3
|
|
|
|
import asyncio
|
|
import json
|
|
import logging
|
|
import sys
|
|
import tempfile
|
|
from dataclasses import dataclass
|
|
from pathlib import Path
|
|
|
|
import aiohttp
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class WebdriverError(RuntimeError):
|
|
pass
|
|
|
|
|
|
@dataclass
|
|
class LogMessage:
|
|
level: str # like "info"
|
|
type: str # usually "console"
|
|
timestamp: int
|
|
args: list[object]
|
|
text: str
|
|
|
|
def __init__(self, message_params):
|
|
self.level = message_params["level"]
|
|
self.type = message_params["type"]
|
|
self.timestamp = message_params["timestamp"]
|
|
self.args = message_params.get("args", [])
|
|
self.text = message_params["text"]
|
|
|
|
def __str__(self):
|
|
return f"LogMessage: {self.type} {self.level} @{self.timestamp}: {self.text} {self.args}"
|
|
|
|
|
|
@dataclass
|
|
class Session:
|
|
http: aiohttp.client.ClientSession
|
|
ws: aiohttp.client.ClientWebSocketResponse
|
|
session_url: str
|
|
task_reader: asyncio.Task
|
|
|
|
|
|
class WebdriverBidi:
|
|
def __init__(self, headless=False) -> None:
|
|
self.headless = headless
|
|
self.last_id = 0
|
|
self.pending_commands: dict[int, asyncio.Future] = {}
|
|
self.logs: list[LogMessage] = []
|
|
self.session: Session | None = None
|
|
self.future_wait_page_load = None
|
|
|
|
async def start_session(self) -> None:
|
|
raise NotImplementedError('must be implemented by concrete subclass')
|
|
|
|
async def close_session(self) -> None:
|
|
raise NotImplementedError('must be implemented by concrete subclass')
|
|
|
|
async def close(self):
|
|
assert self.session is not None
|
|
logger.debug("cleaning up webdriver")
|
|
|
|
self.session.task_reader.cancel()
|
|
del self.session.task_reader
|
|
await self.session.ws.close()
|
|
await self.close_session()
|
|
await self.session.http.close()
|
|
self.session = None
|
|
|
|
async def __aenter__(self):
|
|
await self.start_session()
|
|
return self
|
|
|
|
async def __aexit__(self, *_excinfo):
|
|
if self.session is not None:
|
|
await self.close()
|
|
|
|
async def ws_reader(self, ws: aiohttp.client.ClientWebSocketResponse) -> None:
|
|
async for msg in ws:
|
|
if msg.type == aiohttp.WSMsgType.TEXT:
|
|
data = json.loads(msg.data)
|
|
logger.debug("ws TEXT → %r", data)
|
|
if "id" in data and data["id"] in self.pending_commands:
|
|
logger.debug("ws_reader: resolving pending command %i", data["id"])
|
|
if data["type"] == "success":
|
|
self.pending_commands[data["id"]].set_result(data["result"])
|
|
else:
|
|
self.pending_commands[data["id"]].set_exception(
|
|
WebdriverError(f"{data['type']}: {data['message']}"))
|
|
del self.pending_commands[data["id"]]
|
|
continue
|
|
|
|
if data["type"] == "event":
|
|
if data["method"] == "log.entryAdded":
|
|
self.logs.append(LogMessage(data["params"]))
|
|
continue
|
|
if data["method"] == "browsingContext.domContentLoaded":
|
|
logger.debug("page loaded: %r", data["params"])
|
|
if self.future_wait_page_load:
|
|
self.future_wait_page_load.set_result(data["params"]["url"])
|
|
continue
|
|
|
|
logger.warning("ws_reader: unhandled message %r", data)
|
|
elif msg.type == aiohttp.WSMsgType.ERROR:
|
|
logger.error("BiDi failure: %s", msg)
|
|
break
|
|
|
|
async def bidi(self, method, **params) -> asyncio.Future:
|
|
"""Send a Webdriver BiDI command and return the JSON response"""
|
|
|
|
assert self.session
|
|
|
|
payload = json.dumps({"id": self.last_id, "method": method, "params": params})
|
|
logger.debug("ws ← %r", payload)
|
|
await self.session.ws.send_str(payload)
|
|
future = asyncio.get_event_loop().create_future()
|
|
self.pending_commands[self.last_id] = future
|
|
self.last_id += 1
|
|
return await future
|
|
|
|
def arm_page_load(self):
|
|
assert self.future_wait_page_load is None, "already waiting for page load"
|
|
self.future_wait_page_load = asyncio.get_event_loop().create_future()
|
|
|
|
async def wait_page_load(self):
|
|
assert self.future_wait_page_load is not None, "call arm_page_load() first"
|
|
return await self.future_wait_page_load
|
|
|
|
async def run(self):
|
|
# wait for browser to initialize default context
|
|
for _ in range(10):
|
|
realms = (await self.bidi("script.getRealms"))["realms"]
|
|
if len(realms) > 0:
|
|
context = realms[0]["context"]
|
|
break
|
|
else:
|
|
raise WebdriverError("timed out waiting for default realm")
|
|
|
|
await self.bidi("session.subscribe", events=[
|
|
"log.entryAdded", "browsingContext.domContentLoaded",
|
|
])
|
|
|
|
await self.bidi("script.evaluate", expression="console.log('Hello BiDi')",
|
|
awaitPromise=False, target={"context": context})
|
|
await self.bidi("browsingContext.navigate", context=context,
|
|
url="https://piware.de", wait="complete")
|
|
|
|
r = (await self.bidi("browsingContext.locateNodes", context=context,
|
|
locator={"type": "css", "value": "#menu-content"}))["nodes"]
|
|
assert len(r) == 1
|
|
|
|
r = await self.bidi("script.evaluate", expression="document.querySelector('#menu-content').textContent",
|
|
awaitPromise=False, target={"context": context})
|
|
assert 'Addicted to Free Software Development' in r['result']['value']
|
|
|
|
# locate first social link
|
|
r = (await self.bidi("browsingContext.locateNodes", context=context,
|
|
locator={"type": "css", "value": "a[rel='me']:first-child"}))["nodes"]
|
|
assert len(r) == 1
|
|
|
|
self.arm_page_load()
|
|
|
|
# click it
|
|
await self.bidi("input.performActions", context=context, actions=[
|
|
{
|
|
"id": "pointer-0",
|
|
"type": "pointer",
|
|
"parameters": {"pointerType": "mouse"},
|
|
"actions": [
|
|
{"type": "pointerMove", "x": 0, "y": 0, "origin": {"type": "element", "element": r[0]}},
|
|
{"type": "pointerDown", "button": 0},
|
|
{"type": "pointerUp", "button": 0},
|
|
],
|
|
}
|
|
])
|
|
|
|
url = await self.wait_page_load()
|
|
assert url == "https://github.com/martinpitt/"
|
|
|
|
logger.info("Collected debug messages:")
|
|
for log in self.logs:
|
|
logger.info(log)
|
|
|
|
if not self.headless:
|
|
await asyncio.sleep(3)
|
|
|
|
|
|
class ChromiumBidi(WebdriverBidi):
|
|
async def start_session(self) -> None:
|
|
assert self.session is None
|
|
|
|
# TODO: make dynamic
|
|
webdriver_port = 12345
|
|
|
|
chrome_binary = "/usr/lib64/chromium-browser/headless_shell" if self.headless else "/usr/bin/chromium-browser"
|
|
|
|
session_args = {"capabilities": {
|
|
"alwaysMatch": {
|
|
"webSocketUrl": True,
|
|
"goog:chromeOptions": {"binary": chrome_binary},
|
|
}
|
|
}}
|
|
|
|
self.driver = await asyncio.create_subprocess_exec("chromedriver", "--port=" + str(webdriver_port))
|
|
|
|
aiohttp_session = aiohttp.ClientSession(raise_for_status=True)
|
|
wd_url = f"http://localhost:{webdriver_port}"
|
|
|
|
# webdriver needs some time to launch
|
|
for retry in range(1, 10):
|
|
try:
|
|
async with aiohttp_session.post(f"{wd_url}/session",
|
|
data=json.dumps(session_args).encode()) as resp:
|
|
session_info = json.loads(await resp.text())["value"]
|
|
logger.debug("webdriver session request: %r %r", resp, session_info)
|
|
break
|
|
except (IOError, aiohttp.client.ClientResponseError) as e:
|
|
logger.debug("waiting for webdriver: %s", e)
|
|
await asyncio.sleep(0.1 * retry)
|
|
else:
|
|
raise WebdriverError("could not connect to chromedriver")
|
|
|
|
ws = await aiohttp_session.ws_connect(session_info["capabilities"]["webSocketUrl"])
|
|
|
|
self.session = Session(
|
|
http=aiohttp_session,
|
|
ws=ws,
|
|
session_url=f"{wd_url}/session/{session_info['sessionId']}",
|
|
task_reader=asyncio.create_task(self.ws_reader(ws), name="bidi_reader")
|
|
)
|
|
|
|
logger.debug("Established chromium session %r", self.session)
|
|
|
|
async def close_session(self):
|
|
await self.session.http.delete(self.session.session_url)
|
|
self.driver.terminate()
|
|
await self.driver.wait()
|
|
|
|
|
|
# We could do this with https://github.com/mozilla/geckodriver/releases with a similar protocol as ChromeBidi
|
|
# But let's use https://firefox-source-docs.mozilla.org/testing/marionette/Protocol.html directly, fewer moving parts
|
|
class FirefoxBidi(WebdriverBidi):
|
|
async def start_session(self) -> None:
|
|
# TODO: make dynamic
|
|
marionette_port = 12345
|
|
bidi_port = 12346
|
|
|
|
self.homedir = tempfile.TemporaryDirectory(prefix="firefox-home-")
|
|
(Path(self.homedir.name) / 'download').mkdir()
|
|
self.profiledir = Path(self.homedir.name) / "profile"
|
|
self.profiledir.mkdir()
|
|
(self.profiledir / "user.js").write_text(f"""
|
|
user_pref("remote.enabled", true);
|
|
user_pref("remote.frames.enabled", true);
|
|
user_pref("app.update.auto", false);
|
|
user_pref("datareporting.policy.dataSubmissionEnabled", false);
|
|
user_pref("toolkit.telemetry.reportingpolicy.firstRun", false);
|
|
user_pref("dom.disable_beforeunload", true);
|
|
user_pref("browser.download.dir", "{self.homedir}/download");
|
|
user_pref("browser.download.folderList", 2);
|
|
user_pref("signon.rememberSignons", false);
|
|
user_pref("dom.navigation.locationChangeRateLimit.count", 9999);
|
|
// HACK: https://bugzilla.mozilla.org/show_bug.cgi?id=1746154
|
|
user_pref("fission.webContentIsolationStrategy", 0);
|
|
user_pref("fission.bfcacheInParent", false);
|
|
user_pref('marionette.port', {marionette_port});
|
|
""")
|
|
|
|
self.driver = await asyncio.create_subprocess_exec(
|
|
"firefox", "-profile", str(self.profiledir), "--marionette", "--no-remote",
|
|
f"--remote-debugging-port={bidi_port}",
|
|
*(["-headless"] if self.headless else []), "about:blank")
|
|
|
|
# needs some time to launch
|
|
for _ in range(1, 30):
|
|
try:
|
|
# we must keep this socket open throughout the lifetime of that session
|
|
reader, self.writer_marionette = await asyncio.open_connection("127.0.0.1", marionette_port)
|
|
break
|
|
except ConnectionRefusedError as e:
|
|
logger.debug("waiting for firefox marionette: %s", e)
|
|
await asyncio.sleep(1)
|
|
else:
|
|
raise WebdriverError("could not connect to firefox marionette")
|
|
|
|
reply = await reader.read(1024)
|
|
if b'"marionetteProtocol":3' not in reply:
|
|
raise WebdriverError(f"unexpected marionette reply: {reply.decode()}")
|
|
cmd = '[0,1,"WebDriver:NewSession",{"webSocketUrl":true}]'
|
|
self.writer_marionette.write(f"{len(cmd)}:{cmd}".encode())
|
|
await self.writer_marionette.drain()
|
|
reply = await reader.read(1024)
|
|
# cut off length prefix
|
|
reply = json.loads(reply[reply.index(b":") + 1:].decode())
|
|
if not isinstance(reply, list) or len(reply) != 4 or not isinstance(reply[3], dict):
|
|
raise WebdriverError(f"unexpected marionette session request reply: {reply!r}")
|
|
logger.debug("marionette session request reply: %s", reply)
|
|
|
|
aiohttp_session = aiohttp.ClientSession(raise_for_status=True)
|
|
ws_url = reply[3]["capabilities"]["webSocketUrl"]
|
|
ws = await aiohttp_session.ws_connect(ws_url)
|
|
|
|
self.session = Session(
|
|
http=aiohttp_session,
|
|
ws=ws,
|
|
session_url=ws_url,
|
|
task_reader=asyncio.create_task(self.ws_reader(ws), name="bidi_reader")
|
|
)
|
|
|
|
logger.debug("Established firefox session %r", self.session)
|
|
|
|
async def close_session(self):
|
|
self.writer_marionette.close()
|
|
await self.writer_marionette.wait_closed()
|
|
self.driver.terminate()
|
|
self.driver.wait()
|
|
|
|
|
|
async def main():
|
|
logging.basicConfig(level=logging.DEBUG)
|
|
cls = FirefoxBidi if len(sys.argv) > 1 and sys.argv[1] == "firefox" else ChromiumBidi
|
|
async with cls(headless=True if len(sys.argv) > 2 and sys.argv[2] == 'headless' else False) as d:
|
|
await d.run()
|
|
|
|
|
|
asyncio.run(main())
|