mirror of
https://github.com/NousResearch/hermes-agent.git
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108 lines
3.6 KiB
Python
108 lines
3.6 KiB
Python
"""Helpers for the temporary psutil-on-Android compatibility installer."""
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from __future__ import annotations
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import shutil
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import tarfile
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from pathlib import Path, PurePosixPath
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# Pin a version we know patches cleanly. Update when a newer psutil
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# changes the marker line shape and we need to follow upstream.
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PSUTIL_URL = (
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"https://files.pythonhosted.org/packages/aa/c6/"
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"d1ddf4abb55e93cebc4f2ed8b5d6dbad109ecb8d63748dd2b20ab5e57ebe/"
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"psutil-7.2.2.tar.gz"
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)
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MARKER = 'LINUX = sys.platform.startswith("linux")'
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REPLACEMENT = 'LINUX = sys.platform.startswith(("linux", "android"))'
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class PsutilAndroidInstallError(RuntimeError):
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"""Raised when the pinned psutil sdist is missing or unsafe."""
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def _normalize_member_parts(member_name: str) -> tuple[str, ...]:
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path = PurePosixPath(member_name)
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parts = tuple(part for part in path.parts if part not in ("", "."))
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if path.is_absolute() or ".." in parts or not parts:
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raise PsutilAndroidInstallError(
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f"Unsafe archive member path: {member_name!r}"
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)
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return parts
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def _safe_extract_tar_gz(archive: Path, destination: Path) -> None:
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"""Extract a tar.gz without allowing traversal or link members."""
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with tarfile.open(archive, "r:gz") as tf:
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for member in tf.getmembers():
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parts = _normalize_member_parts(member.name)
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target = destination.joinpath(*parts)
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if member.isdir():
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target.mkdir(parents=True, exist_ok=True)
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continue
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if not member.isfile():
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raise PsutilAndroidInstallError(
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f"Unsupported archive member type: {member.name}"
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)
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target.parent.mkdir(parents=True, exist_ok=True)
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extracted = tf.extractfile(member)
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if extracted is None:
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raise PsutilAndroidInstallError(
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f"Cannot read archive member: {member.name}"
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)
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with extracted, open(target, "wb") as dst:
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shutil.copyfileobj(extracted, dst)
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try:
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target.chmod(member.mode & 0o777)
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except OSError:
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pass
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def prepare_patched_psutil_sdist(archive: Path, destination: Path) -> Path:
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"""Safely extract the pinned psutil sdist and patch it for Android."""
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_safe_extract_tar_gz(archive, destination)
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src_roots = sorted(
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(
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path for path in destination.iterdir()
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if path.is_dir() and path.name.startswith("psutil-")
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),
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key=lambda path: path.name,
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)
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if not src_roots:
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raise PsutilAndroidInstallError(
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"psutil sdist did not contain a psutil-* directory"
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)
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src_root = src_roots[0]
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common_py = src_root / "psutil" / "_common.py"
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if not common_py.is_file():
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raise PsutilAndroidInstallError(
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f"psutil sdist did not contain {common_py.relative_to(src_root)!s}"
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)
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try:
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content = common_py.read_text(encoding="utf-8")
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except OSError as exc:
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raise PsutilAndroidInstallError(
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f"Failed to read {common_py.relative_to(src_root)!s}"
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) from exc
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if MARKER not in content:
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raise PsutilAndroidInstallError(
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"psutil Android compatibility patch marker not found"
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)
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try:
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common_py.write_text(
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content.replace(MARKER, REPLACEMENT),
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encoding="utf-8",
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)
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except OSError as exc:
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raise PsutilAndroidInstallError(
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f"Failed to write {common_py.relative_to(src_root)!s}"
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) from exc
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return src_root
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