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https://github.com/kuhyx/testsAndMisc.git
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Krzysztof kuhy Rudnicki
e3d5e1dd18
Two gaps stopped the unrooted path working end to end. The phone had no way to read the focus policy, and the blocklist was only reachable as a hosts file or over plain UDP/53 on the LAN -- while the rooted enforcer actively rejected every DoT connection, so a self-hosted resolver could not have worked even if one existed. focus_owner now loads a generated policy.json instead of hardcoding anything, so config.sh stays the single source of truth across Python, shell and Kotlin. The committed asset is rendered with --redact-home and a test fails if home coordinates ever appear in it. An unknown schema_version is rejected outright: silently accepting a newer schema means enforcing a policy the app has misread, and a misread allowlist is one that blocks the dialer. dns_enforcer.sh rejected ALL port 853 traffic and pinned Private DNS off, every 20 seconds. That is right when DoT is a bypass channel and exactly wrong when DoT is the enforcement channel, which is what an unrooted phone needs -- it has no hosts file to fall back to. With DNS_TRUSTED_DOT_HOST set it now ACCEPTs the trusted resolver before the blanket REJECT, and pins Private DNS to that hostname so the user cannot pick an unfiltered one. Rule order is load-bearing: iptables takes the first match, so an ACCEPT appended after the REJECT would never be reached. expected_rule_count() counts the new rules, because a mismatch there makes chain_intact() rebuild the chain every 20s -- a silent fork storm that also drops the connection each time. With the variable empty the behaviour is byte-identical, so the rooted phone is untouched until this is deployed. setup_dot_resolver.sh terminates DoT with stunnel rather than Caddy: DoT is a raw TLS stream and stock caddy:2.8 has no layer4 module, so using Caddy would have meant an xcaddy rebuild of a container serving five live sites. It reuses the certificate Caddy already renews, so nothing competes for port 80. It binds to the WireGuard address, not 0.0.0.0 -- a public DoT endpoint is an open resolver, and over the existing tunnel it needs no port-forward, no firewall rule and no rate limiting. Verified: example.com resolves, pornhub.com returns 0.0.0.0, TLS 1.3 against the LE cert, and both the LAN and public addresses refuse. The Device Owner checklist is planning only. Checking the device rather than the config settled the one open risk: Google Wallet is not installed and no NFC payment default is set, so the unconfirmable tap-to-pay question does not apply here. The same check found that Aegis, MS Authenticator, Oracle IDM and PKO IKO are absent -- they are in config.sh's whitelist, which describes the rooted phone, not this one. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01AwepyL5Lxs5QKbKkMpxxxL
81 lines
2.5 KiB
Python
81 lines
2.5 KiB
Python
r"""Render the focus policy as JSON for a non-Python enforcement backend.
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The Device Owner app is Kotlin and cannot read ``config.sh`` or import this
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package, so the policy is handed over as a generated asset:
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python3 -m python_pkg.focus_policy \\
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--config phone_focus_mode/config.sh \\
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--output focus_owner/assets/policy.json
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``--redact-home`` blanks the coordinates, for a policy that will be committed
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or attached to a report.
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"""
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from __future__ import annotations
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import argparse
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from pathlib import Path
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import sys
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from python_pkg.focus_policy.export import policy_to_json
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from python_pkg.focus_policy.loader import load_policy
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from python_pkg.focus_policy.model import PolicyError
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def build_parser() -> argparse.ArgumentParser:
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"""Return the argument parser for the policy exporter."""
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parser = argparse.ArgumentParser(
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prog="python3 -m python_pkg.focus_policy",
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description="Render phone_focus_mode's policy as backend-neutral JSON.",
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)
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parser.add_argument(
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"--config",
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type=Path,
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required=True,
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help="path to phone_focus_mode/config.sh",
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)
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parser.add_argument(
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"--secrets",
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type=Path,
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default=None,
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help="path to config_secrets.sh (defaults to alongside --config)",
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)
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parser.add_argument(
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"--output",
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type=Path,
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default=None,
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help="file to write (defaults to stdout)",
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)
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parser.add_argument(
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"--redact-home",
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action="store_true",
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help="blank the home coordinates, keeping radius and hysteresis",
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)
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return parser
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def main(argv: list[str] | None = None) -> int:
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"""Render the policy, returning a process exit code."""
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args = build_parser().parse_args(argv)
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try:
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policy = load_policy(args.config, args.secrets)
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except (PolicyError, OSError) as error:
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# Written to stderr rather than raised: the caller is a shell script or
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# a build step, and a bare traceback buries the one line that says the
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# coordinates were never filled in.
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sys.stderr.write(f"error: {error}\n")
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return 1
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rendered = policy_to_json(policy, redact_home=args.redact_home) + "\n"
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if args.output is None:
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sys.stdout.write(rendered)
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else:
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args.output.parent.mkdir(parents=True, exist_ok=True)
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args.output.write_text(rendered, encoding="utf-8")
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sys.stderr.write(f"wrote {args.output}\n")
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return 0
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if __name__ == "__main__":
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raise SystemExit(main())
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