mirror of
https://github.com/kuhyx/utils.git
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Krzysztof kuhy Rudnicki
f93a24e283
Drives a Flutter web build in a persistent headless chromium (systemd-run unit, own profile, CDP port) through the semantics tree: tree, tap by label, text, key, scroll, wait, shot, console. Never touches the live display; attaches only to HeadlessChrome. The MCP server wraps the same Driver. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CZ4sULGfyav7EEwQ6vhbfg
82 lines
2.4 KiB
Python
82 lines
2.4 KiB
Python
"""The headless chromium unit: argv, systemd-run wrapper, size parsing."""
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from __future__ import annotations
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import re
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import subprocess
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from collections.abc import Callable
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from pathlib import Path
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from flutter_web_drive.errors import EXIT_USAGE, DriveError
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# The real binary: /usr/local/bin/chromium is a hosts-installer wrapper.
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CHROMIUM = "/usr/bin/chromium"
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Runner = Callable[[list[str]], int]
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def run(cmd: list[str]) -> int:
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"""Run a short command quietly and return its exit code."""
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return subprocess.run(cmd, check=False, capture_output=True).returncode
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def parse_size(size: str) -> tuple[int, int]:
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"""``1400x1000`` -> (1400, 1000)."""
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m = re.fullmatch(r"(\d+)x(\d+)", size)
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if not m:
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raise DriveError(
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"start", f"--size must look like 1400x1000, got {size!r}", EXIT_USAGE
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)
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return int(m[1]), int(m[2])
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def chromium_argv(
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url: str, profile: Path, cdp_port: int, size: tuple[int, int]
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) -> list[str]:
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"""Headless chromium with CDP on loopback and a persistent profile.
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``--disable-extensions`` keeps the Claude extension (loaded via
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chromium-flags.conf) out of this CDP session; ``--password-store=basic``
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stops chromium asking the desktop keyring, which could prompt on :0.
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"""
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width, height = size
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return [
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CHROMIUM,
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"--headless=new",
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f"--remote-debugging-port={cdp_port}",
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"--remote-debugging-address=127.0.0.1",
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f"--user-data-dir={profile}",
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"--disable-extensions",
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"--no-first-run",
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"--no-default-browser-check",
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"--password-store=basic",
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"--mute-audio",
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"--hide-scrollbars",
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"--enable-unsafe-swiftshader",
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f"--window-size={width},{height}",
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url,
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]
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def unit_argv(unit: str, argv: list[str]) -> list[str]:
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"""``systemd-run --user`` so the browser outlives the calling shell.
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DISPLAY/WAYLAND_DISPLAY are unset in the unit: even a mis-flagged
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chromium then has no live display to open a window on.
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"""
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return [
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"systemd-run",
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"--user",
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f"--unit={unit}",
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"--collect",
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"--quiet",
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"-p",
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"UnsetEnvironment=DISPLAY WAYLAND_DISPLAY",
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*argv,
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]
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def unit_active(unit: str, runner: Runner) -> bool:
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"""Is the systemd user unit running?"""
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return runner(["systemctl", "--user", "is-active", "--quiet", unit]) == 0
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