mirror of
https://github.com/firestar5683/StarPilot.git
synced 2026-11-08 05:23:41 +08:00
dirwin31
80 lines
3.0 KiB
Python
80 lines
3.0 KiB
Python
"""Checkout-local BlueALSA 5 bundle and reversible /run service selection."""
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from __future__ import annotations
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import hashlib
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import os
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from pathlib import Path
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ROOT = Path(__file__).resolve().parent / 'bluealsa'
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ARTIFACTS = ('bin/bluealsad', 'bin/bluealsactl', 'bin/bluealsa-aplay',
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'lib/libasound_module_pcm_bluealsa.so', 'lib/libasound_module_ctl_bluealsa.so')
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def validate(root: Path | None = None) -> None:
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root = root or ROOT
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if (root / 'VERSION').read_text().strip() != '5.0.0':
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raise RuntimeError('BlueALSA 5.0.0 bundle is missing')
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records = dict(line.split(maxsplit=1)[::-1] for line in (root / 'SHA256SUMS').read_text().splitlines())
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for name in ARTIFACTS:
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data = (root / name).read_bytes()
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if records.get(name) != hashlib.sha256(data).hexdigest():
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raise RuntimeError(f'BlueALSA artifact checksum failed: {name}')
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if data[:6] != b'\x7fELF\x02\x01' or data[18:20] != b'\xb7\x00':
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raise RuntimeError(f'BlueALSA artifact is not ARM64: {name}')
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if name.startswith('bin/') and not os.access(root / name, os.X_OK):
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raise RuntimeError(f'BlueALSA executable is not executable: {name}')
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def alsa_plugins(root: Path | None = None) -> str:
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"""Explicit library paths affect this ALSA config only, never system defaults."""
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root = root or ROOT
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result = ''
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for kind in ('pcm', 'ctl'):
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library = str(root / 'lib' / f'libasound_module_{kind}_bluealsa.so')
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if any(c in library for c in '\n\r"\\'):
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raise RuntimeError('Invalid BlueALSA plugin path')
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result += f'{kind}_type.bluealsa {{ lib "{library}" }}\n'
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return result
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def paths(legacy: Path) -> tuple[Path, Path]:
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return legacy.with_name('95-starpilot-bluealsa5.conf'), legacy.parent.parent / 'starpilot-bluealsa-launch.py'
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def contents(legacy: Path, root: Path | None = None) -> str:
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root = root or ROOT
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override, launcher = paths(legacy)
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def quote(path: Path) -> str:
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value = str(path)
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if any(c in value for c in '\n\r"\\$'):
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raise RuntimeError('Invalid BlueALSA service path')
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return '"' + value.replace('%', '%%') + '"'
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return ('[Service]\nExecStart=\nExecStart=/usr/bin/python3 ' +
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' '.join(quote(p) for p in (launcher, root, legacy, override)) + '\n')
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def check_owned(legacy: Path, root: Path | None = None) -> None:
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override, _ = paths(legacy)
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if override.exists() and override.read_text() != contents(legacy, root):
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raise RuntimeError('BlueALSA 5 override was changed externally')
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def install(legacy: Path, root: Path | None = None) -> None:
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root = root or ROOT
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validate(root)
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check_owned(legacy, root)
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override, launcher = paths(legacy)
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launcher.parent.mkdir(parents=True, exist_ok=True)
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temporary = launcher.with_suffix('.tmp')
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temporary.write_bytes((root / 'launcher.py').read_bytes())
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temporary.chmod(0o644)
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temporary.replace(launcher)
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override.write_text(contents(legacy, root))
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def remove(legacy: Path, root: Path | None = None) -> None:
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check_owned(legacy, root)
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override, launcher = paths(legacy)
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override.unlink(missing_ok=True)
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launcher.unlink(missing_ok=True)
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