mirror of
https://github.com/d9pouces/id_configurator.git
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d9pouces
82 lines
2.8 KiB
Python
82 lines
2.8 KiB
Python
"""Detect existing APK (Alpine) repositories and configure new ones.
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If `<src>/etc/apk` exists, the existing `/etc/apk/repositories` file (if any)
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is copied into `<dst>` with every active line disabled (commented out), and
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the repositories declared in the configuration are appended as new, active
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lines. Public keys provided alongside a repository are written to
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`<dst>/etc/apk/keys/`, named after their content so that repositories
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sharing the same key (a common case for official Alpine mirrors) only
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produce a single key file.
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"""
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from __future__ import annotations
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import hashlib
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import logging
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from pathlib import Path
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from id_configurator.context import Context
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from id_configurator.modules.base import Module, register
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logger = logging.getLogger(__name__)
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_APK_DIR = "etc/apk"
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_REPOSITORIES = "etc/apk/repositories"
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_KEYS_DIR = "etc/apk/keys"
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def _disable_repositories_content(content: str) -> str:
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lines = [
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line if not line.strip() or line.strip().startswith("#") else f"# {line}"
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for line in content.splitlines()
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]
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return "\n".join(lines) + "\n"
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def _key_filename(content: bytes) -> str:
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return f"{hashlib.sha256(content).hexdigest()[:16]}.rsa.pub"
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@register
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class ApkModule(Module):
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name = "apk"
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def is_relevant(self, context: Context) -> bool:
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return self._src_apk_dir(context) is not None
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@staticmethod
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def _src_apk_dir(context: Context) -> Path | None:
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path = context.src_path(_APK_DIR)
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if path is not None and path.is_dir():
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return path
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return None
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def apply(self, context: Context) -> None:
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disabled = self._disabled_existing_repositories(context)
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configured = self._configured_repositories_lines(context)
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content = disabled + ("\n".join(configured) + "\n" if configured else "")
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if content:
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context.write_file(_REPOSITORIES, content.encode("utf-8"))
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@staticmethod
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def _disabled_existing_repositories(context: Context) -> str:
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existing = context.read_src_file(_REPOSITORIES)
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if existing is None:
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return ""
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logger.info("disabled existing apk repositories %s", _REPOSITORIES)
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return _disable_repositories_content(existing.decode("utf-8"))
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@staticmethod
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def _configured_repositories_lines(context: Context) -> list[str]:
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lines = []
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for repository in context.config.configurations.apk.repositories:
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lines.append(repository.url)
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logger.info("added apk repository %s", repository.name)
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if repository.key:
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filename = _key_filename(repository.key.encode("utf-8"))
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context.write_file(
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f"{_KEYS_DIR}/{filename}", repository.key.encode("utf-8")
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)
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logger.info("installed apk key %s", filename)
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return lines
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