0844adbcbe
<message>Modify the first-boot.sh script to include an additional step for managing screen brightness during the provisioning process. Update user-data.bootstrap to improve DNS configuration by ensuring NetworkManager manages /etc/resolv.conf correctly, and remove obsolete scripts related to systemd-resolved. Enhance documentation to reflect these changes and clarify the setup process for users, improving overall network boot functionality and user experience.
85 lines
2.9 KiB
Python
85 lines
2.9 KiB
Python
#!/usr/bin/env python3
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"""
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Local HTTP API for screen-brightness override (crew manual control per MSC.191(79)).
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Listens on 127.0.0.1 only. Run as root so it can write /run/screen-brightness/override.
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"""
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import os
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import urllib.parse
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from pathlib import Path
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from http.server import HTTPServer, BaseHTTPRequestHandler
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OVERRIDE_FILE = Path("/run/screen-brightness/override")
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RUN_DIR = OVERRIDE_FILE.parent
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HOST = "127.0.0.1"
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PORT = 8765
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class BrightnessHandler(BaseHTTPRequestHandler):
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def do_POST(self):
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path = self.path.split("?")[0]
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if path != "/brightness" and path != "/":
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self.send_error(404)
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return
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length = int(self.headers.get("Content-Length", 0))
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body = self.rfile.read(length).decode("utf-8", errors="ignore") if length else ""
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query = urllib.parse.parse_qs(urllib.parse.urlparse(self.path).query)
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level = (query.get("level") or [None])[0] or (urllib.parse.parse_qs(body).get("level") or [None])[0]
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if not level:
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self.send_response(400)
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self.send_header("Content-Type", "text/plain")
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self.end_headers()
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self.wfile.write(b"missing level=1|2|3|4|5|auto")
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return
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level = level.strip().lower()
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if level == "auto":
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value = "auto"
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elif level in ("1", "2", "3", "4", "5"):
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value = level
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else:
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self.send_response(400)
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self.send_header("Content-Type", "text/plain")
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self.end_headers()
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self.wfile.write(b"level must be 1, 2, 3, 4, 5, or auto")
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return
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try:
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RUN_DIR.mkdir(parents=True, exist_ok=True)
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OVERRIDE_FILE.write_text(value + "\n")
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except Exception as e:
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self.send_response(500)
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self.send_header("Content-Type", "text/plain")
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self.end_headers()
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self.wfile.write(f"write failed: {e}".encode())
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return
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self.send_response(200)
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self.send_header("Content-Type", "text/plain")
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self.end_headers()
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self.wfile.write(f"ok {value}\n".encode())
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def do_GET(self):
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if self.path.split("?")[0] in ("/", "/brightness", "/state"):
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state_file = Path("/run/screen-brightness/state")
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if state_file.exists():
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self.send_response(200)
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self.send_header("Content-Type", "text/plain")
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self.end_headers()
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self.wfile.write(state_file.read_bytes())
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else:
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self.send_response(404)
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self.end_headers()
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else:
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self.send_error(404)
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def log_message(self, format, *args):
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pass # quiet; use journal if needed
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def main():
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if os.geteuid() != 0:
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raise SystemExit("brightness-api must run as root to write /run/screen-brightness/override")
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server = HTTPServer((HOST, PORT), BrightnessHandler)
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server.serve_forever()
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if __name__ == "__main__":
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main()
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