1150 lines
46 KiB
Python
1150 lines
46 KiB
Python
#!/usr/bin/env python3
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'''Tool for managing VM templates.'''
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import argparse
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import collections
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import datetime
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import enum
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import fnmatch
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import functools
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import itertools
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import os
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import re
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import shutil
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import subprocess
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import sys
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import tempfile
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import time
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import typing
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import qubesadmin
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import qubesadmin.tools
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import rpm
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import tqdm
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import xdg.BaseDirectory
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PATH_PREFIX = '/var/lib/qubes/vm-templates'
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TEMP_DIR = '/var/tmp'
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PACKAGE_NAME_PREFIX = 'qubes-template-'
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CACHE_DIR = os.path.join(xdg.BaseDirectory.xdg_cache_home, 'qvm-template')
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UNVERIFIED_SUFFIX = '.unverified'
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LOCK_FILE = '/var/tmp/qvm-template.lck'
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def qubes_release() -> str:
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"""Return the Qubes release."""
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if os.path.exists('/usr/share/qubes/marker-vm'):
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with open('/usr/share/qubes/marker-vm', 'r') as fd:
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# Get last line (in the format `x.x`)
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return fd.readlines()[-1].strip()
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return subprocess.check_output(['lsb_release', '-sr'],
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encoding='UTF-8').strip()
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def parser_gen() -> argparse.ArgumentParser:
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"""Generate argument parser for the application."""
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formatter = argparse.ArgumentDefaultsHelpFormatter
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parser_main = argparse.ArgumentParser(description='Qubes Template Manager',
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formatter_class=formatter)
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subparsers = parser_main.add_subparsers(dest='operation', required=True,
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description='Command to run.')
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def parser_add_command(cmd, help_str, add_help=True):
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return subparsers.add_parser(cmd, formatter_class=formatter,
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help=help_str, description=help_str, add_help=add_help)
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# qrexec/DNF related
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parser_main.add_argument('--repo-files', action='append',
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default=['/usr/share/qubes/repo-templates/qubes-templates.repo'],
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help='Specify files containing DNF repository configuration.')
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parser_main.add_argument('--updatevm', default='sys-firewall',
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help='Specify VM to download updates from.')
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parser_main.add_argument('--enablerepo', action='append', default=[],
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help='Enable additional repositories.')
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parser_main.add_argument('--disablerepo', action='append', default=[],
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help='Disable certain repositories.')
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parser_main.add_argument('--repoid', action='append', default=[],
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help='Enable just specific repositories.')
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parser_main.add_argument('--releasever', default=qubes_release(),
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help='Override distro release version.')
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parser_main.add_argument('--refresh', action='store_true',
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help='Set repository metadata as expired before running the command.')
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parser_main.add_argument('--cachedir', default=CACHE_DIR,
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help='Specify cache directory.')
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# qvm-template download
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parser_download = parser_add_command('download',
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help_str='Download template package.')
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parser_download.add_argument('--downloaddir', default='.',
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help='Specify download directory.')
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parser_download.add_argument('--retries', default=5, type=int,
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help='Specify number of retries for downloads.')
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parser_download.add_argument('templates', nargs='*', metavar='TEMPLATE')
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# qvm-template {install,reinstall,downgrade,upgrade}
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parser_install = parser_add_command('install',
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help_str='Install template packages.')
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parser_install.add_argument('--pool',
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help='Specify pool to store created VMs in.')
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parser_reinstall = parser_add_command('reinstall',
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help_str='Reinstall template packages.')
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parser_downgrade = parser_add_command('downgrade',
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help_str='Downgrade template packages.')
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parser_upgrade = parser_add_command('upgrade',
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help_str='Upgrade template packages.')
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for parser_x in [parser_install, parser_reinstall,
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parser_downgrade, parser_upgrade]:
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parser_x.add_argument('--nogpgcheck', action='store_true',
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help='Disable signature checks.')
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parser_x.add_argument('--allow-pv', action='store_true',
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help='Allow setting virt_mode to pv in configuration file.')
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parser_x.add_argument('templates', nargs='*', metavar='TEMPLATE')
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# qvm-template {list,info}
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parser_list = parser_add_command('list',
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help_str='List templates.')
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parser_info = parser_add_command('info',
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help_str='Display details about templates.')
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for parser_x in [parser_list, parser_info]:
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parser_x.add_argument('--all', action='store_true',
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help='Show all templates (default).')
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parser_x.add_argument('--installed', action='store_true',
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help='Show installed templates.')
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parser_x.add_argument('--available', action='store_true',
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help='Show available templates.')
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parser_x.add_argument('--extras', action='store_true',
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help=('Show extras (e.g., ones that exists'
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' locally but not in repos) templates.'))
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parser_x.add_argument('--upgrades', action='store_true',
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help='Show upgradable templates.')
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parser_x.add_argument('--machine-readable', action='store_true',
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help='Enable machine-readable output.')
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parser_x.add_argument('templates', nargs='*', metavar='TEMPLATE')
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# qvm-template search
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parser_search = parser_add_command('search',
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help_str='Search template details for the given string.')
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parser_search.add_argument('--all', action='store_true',
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help=('Search also in template description and URL. In addition,'
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' the criterion are evaluated with OR instead of AND.'))
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parser_search.add_argument('templates', nargs='*', metavar='PATTERN')
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# qvm-template remove
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parser_remove = parser_add_command('remove',
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help_str='Remove installed templates.',
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add_help=False) # Forward --help to qvm-remove
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_ = parser_remove # unused
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# qvm-template clean
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parser_clean = parser_add_command('clean',
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help_str='Remove cached data.')
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_ = parser_clean # unused
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return parser_main
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parser = parser_gen()
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class TemplateState(enum.Enum):
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"""Enum representing the state of a template."""
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INSTALLED = 'installed'
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AVAILABLE = 'available'
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EXTRA = 'extra'
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UPGRADABLE = 'upgradable'
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def title(self) -> str:
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"""Return a long description of the state. Can be used as headings."""
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#pylint: disable=invalid-name
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TEMPLATE_TITLES = {
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TemplateState.INSTALLED: 'Installed Templates',
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TemplateState.AVAILABLE: 'Available Templates',
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TemplateState.EXTRA: 'Extra Templates',
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TemplateState.UPGRADABLE: 'Available Upgrades'
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}
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return TEMPLATE_TITLES[self]
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class VersionSelector(enum.Enum):
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"""Enum representing how the candidate template version is chosen."""
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LATEST = enum.auto()
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"""Install latest version."""
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REINSTALL = enum.auto()
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"""Reinstall current version."""
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LATEST_LOWER = enum.auto()
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"""Downgrade to the highest version that is lower than the current one."""
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LATEST_HIGHER = enum.auto()
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"""Upgrade to the highest version that is higher than the current one."""
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class Template(typing.NamedTuple):
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"""Details of a template."""
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name: str
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epoch: str
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version: str
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release: str
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reponame: str
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dlsize: int
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buildtime: datetime.datetime
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licence: str
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url: str
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summary: str
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description: str
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class DlEntry(typing.NamedTuple):
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"""Information about a template to be downloaded."""
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evr: typing.Tuple[str, str, str]
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reponame: str
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dlsize: int
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def build_version_str(evr: typing.Tuple[str, str, str]) -> str:
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"""Return version string described by ``evr``, which is in (epoch, version,
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release) format."""
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return '%s:%s-%s' % evr
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def is_match_spec(name: str, epoch: str, version: str, release: str, spec: str
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) -> typing.Tuple[bool, float]:
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"""Check whether (name, epoch, version, release) matches the spec string.
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For the algorithm, refer to section "NEVRA Matching" in the DNF
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documentation.
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Note that currently ``arch`` is ignored as the templates should be of
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``noarch``.
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:return: A tuple. The first element indicates whether there is a match; the
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second element represents the priority of the match (lower is better)
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"""
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if epoch != 0:
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targets = [
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f'{name}-{epoch}:{version}-{release}',
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f'{name}',
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f'{name}-{epoch}:{version}'
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]
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else:
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targets = [
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f'{name}-{epoch}:{version}-{release}',
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f'{name}-{version}-{release}',
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f'{name}',
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f'{name}-{epoch}:{version}',
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f'{name}-{version}'
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]
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for prio, target in enumerate(targets):
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if fnmatch.fnmatch(target, spec):
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return True, prio
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return False, float('inf')
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def query_local(vm: qubesadmin.vm.QubesVM) -> Template:
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"""Return Template object associated with ``vm``.
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Requires the VM to be managed by qvm-template.
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"""
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return Template(
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vm.features['template-name'],
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vm.features['template-epoch'],
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vm.features['template-version'],
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vm.features['template-release'],
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vm.features['template-reponame'],
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vm.get_disk_utilization(),
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vm.features['template-buildtime'],
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vm.features['template-license'],
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vm.features['template-url'],
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vm.features['template-summary'],
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vm.features['template-description'].replace('|', '\n'))
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def query_local_evr(vm: qubesadmin.vm.QubesVM) -> typing.Tuple[str, str, str]:
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"""Return the (epoch, version, release) of ``vm``.
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Requires the VM to be managed by qvm-template.
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"""
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return (
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vm.features['template-epoch'],
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vm.features['template-version'],
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vm.features['template-release'])
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def is_managed_template(vm: qubesadmin.vm.QubesVM) -> bool:
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"""Return whether the VM is managed by qvm-template."""
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return vm.features.get('template-name', None) == vm.name
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def get_managed_template_vm(app: qubesadmin.app.QubesBase, name: str
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) -> qubesadmin.vm.QubesVM:
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"""Return the QubesVM object associated with the given name if it exists
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and is managed by qvm-template, otherwise raise a parser error."""
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if name not in app.domains:
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parser.error("Template '%s' not already installed." % name)
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vm = app.domains[name]
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if not is_managed_template(vm):
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parser.error("Template '%s' is not managed by qvm-template." % name)
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return vm
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def qrexec_popen(
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args: argparse.Namespace,
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app: qubesadmin.app.QubesBase,
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service: str,
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stdout: typing.Union[int, typing.IO] = subprocess.PIPE,
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filter_esc: bool = True) -> subprocess.Popen:
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"""Return ``Popen`` object that communicates with the given qrexec call in
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``args.updatevm``.
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Note that this falls back to invoking ``/etc/qubes-rpc/*`` directly if
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``args.updatevm`` is None.
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:param args: Arguments received by the application. ``args.updatevm`` is
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used
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:param app: Qubes application object
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:param service: The qrexec call to invoke
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:param stdout: Where the process stdout points to. This is passed directly
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to ``subprocess.Popen``. Defaults to ``subprocess.PIPE``
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Note that stderr is always set to ``subprocess.PIPE``
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:param filter_esc: Whether to filter out escape sequences from
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stdout/stderr. Defaults to True
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:returns: ``Popen`` object that communicates with the given qrexec call
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"""
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if args.updatevm:
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return app.domains[args.updatevm].run_service(
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service,
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filter_esc=filter_esc,
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stdout=stdout)
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return subprocess.Popen([
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'/etc/qubes-rpc/%s' % service,
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],
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stdin=subprocess.PIPE,
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stdout=stdout,
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stderr=subprocess.PIPE)
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def qrexec_payload(args: argparse.Namespace, app: qubesadmin.app.QubesBase,
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spec: str, refresh: bool) -> str:
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"""Return payload string for the ``qubes.Template*`` qrexec calls.
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:param args: Arguments received by the application. Specifically,
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``args.{enablerepo,disablerepo,repoid,releasever,repo_files}`` are used
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:param app: Qubes application object
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:param spec: Package spec to query (refer to ``<package-name-spec>`` in the
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DNF documentation)
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:param refresh: Whether to force refresh repo metadata
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:return: Payload string
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:raises: Parser error if spec equals ``---`` or input contains ``\\n``
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"""
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_ = app # unused
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if spec == '---':
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parser.error("Malformed template name: argument should not be '---'.")
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def check_newline(string, name):
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if '\n' in string:
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parser.error(f"Malformed {name}:" +
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" argument should not contain '\\n'.")
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payload = ''
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for repo in args.enablerepo:
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check_newline(repo, '--enablerepo')
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payload += '--enablerepo=%s\n' % repo
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for repo in args.disablerepo:
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check_newline(repo, '--disablerepo')
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payload += '--disablerepo=%s\n' % repo
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for repo in args.repoid:
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check_newline(repo, '--repoid')
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payload += '--repoid=%s\n' % repo
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if refresh:
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payload += '--refresh\n'
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check_newline(args.releasever, '--releasever')
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payload += '--releasever=%s\n' % args.releasever
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check_newline(spec, 'template name')
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payload += spec + '\n'
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payload += '---\n'
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for path in args.repo_files:
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with open(path, 'r') as fd:
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payload += fd.read() + '\n'
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return payload
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def qrexec_repoquery(
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args: argparse.Namespace,
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app: qubesadmin.app.QubesBase,
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spec: str = '*',
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refresh: bool = False) -> typing.List[Template]:
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"""Query template information from repositories.
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:param args: Arguments received by the application. Specifically,
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``args.{enablerepo,disablerepo,repoid,releasever,repo_files,updatevm}``
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are used
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:param app: Qubes application object
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:param spec: Package spec to query (refer to ``<package-name-spec>`` in the
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DNF documentation). Defaults to ``*``
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:param refresh: Whether to force refresh repo metadata. Defaults to False
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:raises ConnectionError: if the qrexec call fails
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:return: List of ``Template`` objects representing the result of the query
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"""
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payload = qrexec_payload(args, app, spec, refresh)
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proc = qrexec_popen(args, app, 'qubes.TemplateSearch')
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stdout, stderr = proc.communicate(payload.encode('UTF-8'))
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stdout = stdout.decode('ASCII')
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if proc.wait() != 0:
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for line in stderr.decode('ASCII').rstrip().split('\n'):
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print('[Qrexec] %s' % line, file=sys.stderr)
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raise ConnectionError("qrexec call 'qubes.TemplateSearch' failed.")
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name_re = re.compile(r'^[A-Za-z0-9._+\-]*$')
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evr_re = re.compile(r'^[A-Za-z0-9._+~]*$')
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date_re = re.compile(r'^\d+-\d+-\d+ \d+:\d+$')
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licence_re = re.compile(r'^[A-Za-z0-9._+\-()]*$')
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result = []
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for line in stdout.split('|\n'):
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# Note that there's an empty entry at the end as .strip() is not used.
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# This is because if .strip() is used, the .split() will not work.
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if line == '':
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continue
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entry = line.split('|')
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try:
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# If there is an incorrect number of entries, raise an error
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# Unpack manually instead of stuffing into `Template` right away
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# so that it's easier to mutate stuff.
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name, epoch, version, release, reponame, dlsize, \
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buildtime, licence, url, summary, description = entry
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# Ignore packages that are not templates
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if not name.startswith(PACKAGE_NAME_PREFIX):
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continue
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name = name[len(PACKAGE_NAME_PREFIX):]
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# Check that the values make sense
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if not re.fullmatch(name_re, name):
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raise ValueError
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for val in [epoch, version, release]:
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if not re.fullmatch(evr_re, val):
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raise ValueError
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if not re.fullmatch(name_re, reponame):
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raise ValueError
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dlsize = int(dlsize)
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# First verify that the date does not look weird, then parse it
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if not re.fullmatch(date_re, buildtime):
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raise ValueError
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buildtime = datetime.datetime.strptime(buildtime, '%Y-%m-%d %H:%M')
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# XXX: Perhaps whitelist licenses directly?
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if not re.fullmatch(licence_re, licence):
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raise ValueError
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# Check name actually matches spec
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if not is_match_spec(name, epoch, version, release, spec):
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continue
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result.append(Template(name, epoch, version, release, reponame,
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dlsize, buildtime, licence, url, summary, description))
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except (TypeError, ValueError):
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raise ConnectionError(("qrexec call 'qubes.TemplateSearch' failed:"
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" unexpected data format."))
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return result
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def qrexec_download(
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args: argparse.Namespace,
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app: qubesadmin.app.QubesBase,
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spec: str,
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path: str,
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dlsize: typing.Optional[int] = None,
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refresh: bool = False) -> None:
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"""Download a template from repositories.
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:param args: Arguments received by the application. Specifically,
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``args.{enablerepo,disablerepo,repoid,releasever,repo_files,updatevm}``
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are used
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:param app: Qubes application object
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:param spec: Package spec to query (refer to ``<package-name-spec>`` in the
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DNF documentation)
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:param path: Path to place the downloaded template
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:param dlsize: Size of template to be downloaded. Used for the progress
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bar. Optional
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:param refresh: Whether to force refresh repo metadata. Defaults to False
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:raises ConnectionError: if the qrexec call fails
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"""
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with open(path, 'wb') as fd:
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payload = qrexec_payload(args, app, spec, refresh)
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# Don't filter ESCs for binary files
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proc = qrexec_popen(args, app, 'qubes.TemplateDownload',
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stdout=fd, filter_esc=False)
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proc.stdin.write(payload.encode('UTF-8'))
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proc.stdin.close()
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with tqdm.tqdm(desc=spec, total=dlsize, unit_scale=True,
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unit_divisor=1000, unit='B') as pbar:
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last = 0
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while proc.poll() is None:
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cur = fd.tell()
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pbar.update(cur - last)
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last = cur
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time.sleep(0.1)
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if proc.wait() != 0:
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raise ConnectionError(
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"qrexec call 'qubes.TemplateDownload' failed.")
|
|
|
|
def verify_rpm(
|
|
path: str,
|
|
nogpgcheck: bool = False,
|
|
transaction_set: typing.Optional[rpm.transaction.TransactionSet] = None
|
|
) -> bool:
|
|
"""Verify the digest and signature of a RPM package.
|
|
|
|
Note that verifying RPMs this way is prone to TOCTOU. This is okay for
|
|
local files, but may create problems if multiple instances of
|
|
**qvm-template** are downloading the same file, so a lock is needed in that
|
|
case.
|
|
|
|
:param path: Location of the RPM package
|
|
:param nogpgcheck: Whether to allow invalid GPG signatures
|
|
:param transaction_set: Override RPM ``TransactionSet``. Optional
|
|
|
|
:return: Whether the RPM is verified
|
|
"""
|
|
if transaction_set is None:
|
|
transaction_set = rpm.TransactionSet()
|
|
with open(path, 'rb') as fd:
|
|
try:
|
|
hdr = transaction_set.hdrFromFdno(fd)
|
|
if hdr[rpm.RPMTAG_SIGSIZE] is None \
|
|
and hdr[rpm.RPMTAG_SIGPGP] is None \
|
|
and hdr[rpm.RPMTAG_SIGGPG] is None:
|
|
return nogpgcheck
|
|
except rpm.error as e:
|
|
if str(e) == 'public key not trusted' \
|
|
or str(e) == 'public key not available':
|
|
return nogpgcheck
|
|
return False
|
|
return True
|
|
|
|
def get_package_hdr(
|
|
path: str,
|
|
transaction_set: typing.Optional[rpm.transaction.TransactionSet] = None
|
|
) -> rpm.hdr:
|
|
"""Return header of a RPM package.
|
|
|
|
Note that this function **does not** check the integrity of the package.
|
|
|
|
:param path: Location of the RPM package
|
|
:param transaction_set: Override RPM ``TransactionSet``. Optional
|
|
|
|
:return: RPM headers
|
|
"""
|
|
if transaction_set is None:
|
|
transaction_set = rpm.TransactionSet()
|
|
with open(path, 'rb') as fd:
|
|
hdr = transaction_set.hdrFromFdno(fd)
|
|
return hdr
|
|
|
|
def extract_rpm(name: str, path: str, target: str) -> bool:
|
|
"""Extract a template RPM package.
|
|
|
|
:param name: Name of the template
|
|
:param path: Location of the RPM package
|
|
:param target: Target path to extract to
|
|
|
|
:return: Whether the extraction succeeded
|
|
"""
|
|
rpm2cpio = subprocess.Popen(['rpm2cpio', path], stdout=subprocess.PIPE)
|
|
# `-D` is GNUism
|
|
cpio = subprocess.Popen([
|
|
'cpio',
|
|
'-idm',
|
|
'-D',
|
|
target,
|
|
'.%s/%s/*' % (PATH_PREFIX, name)
|
|
], stdin=rpm2cpio.stdout, stdout=subprocess.DEVNULL)
|
|
return rpm2cpio.wait() == 0 and cpio.wait() == 0
|
|
|
|
def get_dl_list(
|
|
args: argparse.Namespace,
|
|
app: qubesadmin.app.QubesBase,
|
|
version_selector: VersionSelector = VersionSelector.LATEST
|
|
) -> typing.Dict[str, DlEntry]:
|
|
"""Return list of templates that needs to be downloaded.
|
|
|
|
:param args: Arguments received by the application.
|
|
:param app: Qubes application object
|
|
:param version_selector: Specify algorithm to select the candidate version
|
|
of a package. Defaults to ``VersionSelector.LATEST``
|
|
|
|
:return: Dictionary that maps to ``DlEntry`` the names of templates that
|
|
needs to be downloaded
|
|
"""
|
|
full_candid: typing.Dict[str, DlEntry] = {}
|
|
for template in args.templates:
|
|
# This will be merged into `full_candid` later.
|
|
# It is separated so that we can check whether it is empty.
|
|
candid: typing.Dict[str, DlEntry] = {}
|
|
|
|
# Skip local RPMs
|
|
if template.endswith('.rpm'):
|
|
continue
|
|
|
|
query_res = qrexec_repoquery(args, app, PACKAGE_NAME_PREFIX + template)
|
|
|
|
# We only select one package for each distinct package name
|
|
for entry in query_res:
|
|
ver = (entry.epoch, entry.version, entry.release)
|
|
insert = False
|
|
if version_selector == VersionSelector.LATEST:
|
|
if entry.name not in candid \
|
|
or rpm.labelCompare(candid[entry.name][0], ver) < 0:
|
|
insert = True
|
|
elif version_selector == VersionSelector.REINSTALL:
|
|
vm = get_managed_template_vm(app, entry.name)
|
|
cur_ver = query_local_evr(vm)
|
|
if rpm.labelCompare(ver, cur_ver) == 0:
|
|
insert = True
|
|
elif version_selector in [VersionSelector.LATEST_LOWER,
|
|
VersionSelector.LATEST_HIGHER]:
|
|
vm = get_managed_template_vm(app, entry.name)
|
|
cur_ver = query_local_evr(vm)
|
|
cmp_res = -1 \
|
|
if version_selector == VersionSelector.LATEST_LOWER \
|
|
else 1
|
|
if rpm.labelCompare(ver, cur_ver) == cmp_res:
|
|
if entry.name not in candid \
|
|
or rpm.labelCompare(candid[entry.name][0], ver) < 0:
|
|
insert = True
|
|
if insert:
|
|
candid[entry.name] = DlEntry(ver, entry.reponame, entry.dlsize)
|
|
|
|
# XXX: As it's possible to include version information in `template`,
|
|
# perhaps the messages can be improved
|
|
if len(candid) == 0:
|
|
if version_selector == VersionSelector.LATEST:
|
|
parser.error('Template \'%s\' not found.' % template)
|
|
elif version_selector == VersionSelector.REINSTALL:
|
|
parser.error('Same version of template \'%s\' not found.' \
|
|
% template)
|
|
# Copy behavior of DNF and do nothing if version not found
|
|
elif version_selector == VersionSelector.LATEST_LOWER:
|
|
print(("Template '%s' of lowest version"
|
|
" already installed, skipping..." % template),
|
|
file=sys.stderr)
|
|
elif version_selector == VersionSelector.LATEST_HIGHER:
|
|
print(("Template '%s' of highest version"
|
|
" already installed, skipping..." % template),
|
|
file=sys.stderr)
|
|
|
|
# Merge & choose the template with the highest version
|
|
for name, dlentry in candid.items():
|
|
if name not in full_candid \
|
|
or rpm.labelCompare(full_candid[name].evr, dlentry.evr) < 0:
|
|
full_candid[name] = dlentry
|
|
|
|
return full_candid
|
|
|
|
def download(
|
|
args: argparse.Namespace,
|
|
app: qubesadmin.app.QubesBase,
|
|
path_override: typing.Optional[str] = None,
|
|
dl_list: typing.Optional[typing.Dict[str, DlEntry]] = None,
|
|
suffix: str = '',
|
|
version_selector: VersionSelector = VersionSelector.LATEST) -> None:
|
|
"""Command that downloads template packages.
|
|
|
|
:param args: Arguments received by the application.
|
|
:param app: Qubes application object
|
|
:param path_override: Override path to store downloads. If not set or set
|
|
to None, ``args.downloaddir`` is used. Optional
|
|
:param dl_list: Override list of templates to download. If not set or set
|
|
to None, ``get_dl_list`` is called, which generates the list from
|
|
``args``. Optional
|
|
:param suffix: Suffix to add to the file name of downloaded packages. This
|
|
is useful if you want to distinguish between verified and unverified
|
|
packages. Defaults to an empty string
|
|
:param version_selector: Specify algorithm to select the candidate version
|
|
of a package. Defaults to ``VersionSelector.LATEST``
|
|
"""
|
|
if dl_list is None:
|
|
dl_list = get_dl_list(args, app, version_selector=version_selector)
|
|
|
|
path = path_override if path_override is not None else args.downloaddir
|
|
for name, entry in dl_list.items():
|
|
version_str = build_version_str(entry.evr)
|
|
spec = PACKAGE_NAME_PREFIX + name + '-' + version_str
|
|
target = os.path.join(path, '%s.rpm' % spec)
|
|
target_suffix = target + suffix
|
|
if suffix != '' and os.path.exists(target_suffix):
|
|
print('\'%s\' already exists, skipping...' % target,
|
|
file=sys.stderr)
|
|
if os.path.exists(target):
|
|
print('\'%s\' already exists, skipping...' % target,
|
|
file=sys.stderr)
|
|
if suffix != '':
|
|
os.rename(target, target_suffix)
|
|
else:
|
|
print('Downloading \'%s\'...' % spec, file=sys.stderr)
|
|
done = False
|
|
for attempt in range(args.retries):
|
|
try:
|
|
qrexec_download(args, app, spec, target_suffix,
|
|
entry.dlsize)
|
|
done = True
|
|
break
|
|
except ConnectionError:
|
|
os.remove(target_suffix)
|
|
if attempt + 1 < args.retries:
|
|
print('\'%s\' download failed, retrying...' % spec,
|
|
file=sys.stderr)
|
|
except:
|
|
# Also remove file if interrupted by other means
|
|
os.remove(target_suffix)
|
|
raise
|
|
if not done:
|
|
print('\'%s\' download failed.' % spec, file=sys.stderr)
|
|
sys.exit(1)
|
|
|
|
def install(
|
|
args: argparse.Namespace,
|
|
app: qubesadmin.app.QubesBase,
|
|
version_selector: VersionSelector = VersionSelector.LATEST,
|
|
override_existing: bool = False) -> None:
|
|
"""Command that installs template packages.
|
|
|
|
This command creates a lock file to ensure that two instances are not
|
|
running at the same time.
|
|
|
|
:param args: Arguments received by the application.
|
|
:param app: Qubes application object
|
|
:param version_selector: Specify algorithm to select the candidate version
|
|
of a package. Defaults to ``VersionSelector.LATEST``
|
|
:param override_existing: Whether to override existing packages. Used for
|
|
reinstall, upgrade, and downgrade operations
|
|
"""
|
|
try:
|
|
with open(LOCK_FILE, 'x') as _:
|
|
pass
|
|
except FileExistsError:
|
|
parser.error(('%s already exists.'
|
|
' Perhaps another instance of qvm-template is running?')
|
|
% LOCK_FILE)
|
|
|
|
try:
|
|
transaction_set = rpm.TransactionSet()
|
|
|
|
rpm_list = [] # rpmfile, reponame
|
|
for template in args.templates:
|
|
if template.endswith('.rpm'):
|
|
if not os.path.exists(template):
|
|
parser.error('RPM file \'%s\' not found.' % template)
|
|
rpm_list.append((template, '@commandline'))
|
|
|
|
os.makedirs(args.cachedir, exist_ok=True)
|
|
|
|
dl_list = get_dl_list(args, app, version_selector=version_selector)
|
|
dl_list_copy = dl_list.copy()
|
|
# Verify that the templates are not yet installed
|
|
for name, entry in dl_list.items():
|
|
# Should be ensured by checks in repoquery
|
|
assert entry.reponame != '@commandline'
|
|
if not override_existing and name in app.domains:
|
|
print(('Template \'%s\' already installed, skipping...'
|
|
' (You may want to use the'
|
|
' {reinstall,upgrade,downgrade}'
|
|
' operations.)') % name, file=sys.stderr)
|
|
del dl_list_copy[name]
|
|
else:
|
|
version_str = build_version_str(entry.evr)
|
|
target_file = \
|
|
'%s%s-%s.rpm' % (PACKAGE_NAME_PREFIX, name, version_str)
|
|
rpm_list.append(
|
|
(os.path.join(args.cachedir, target_file), entry.reponame))
|
|
dl_list = dl_list_copy
|
|
|
|
download(args, app, path_override=args.cachedir,
|
|
dl_list=dl_list, suffix=UNVERIFIED_SUFFIX,
|
|
version_selector=version_selector)
|
|
|
|
# Verify package and remove unverified suffix
|
|
for rpmfile, reponame in rpm_list:
|
|
if reponame != '@commandline':
|
|
path = rpmfile + UNVERIFIED_SUFFIX
|
|
else:
|
|
path = rpmfile
|
|
if not verify_rpm(path, args.nogpgcheck, transaction_set):
|
|
parser.error('Package \'%s\' verification failed.' % rpmfile)
|
|
if reponame != '@commandline':
|
|
os.rename(path, rpmfile)
|
|
|
|
# Unpack and install
|
|
for rpmfile, reponame in rpm_list:
|
|
with tempfile.TemporaryDirectory(dir=TEMP_DIR) as target:
|
|
package_hdr = get_package_hdr(rpmfile)
|
|
package_name = package_hdr[rpm.RPMTAG_NAME]
|
|
if not package_name.startswith(PACKAGE_NAME_PREFIX):
|
|
parser.error(
|
|
'Illegal package name for package \'%s\'.' % rpmfile)
|
|
# Remove prefix to get the real template name
|
|
name = package_name[len(PACKAGE_NAME_PREFIX):]
|
|
|
|
# Another check for already-downloaded RPMs
|
|
if not override_existing and name in app.domains:
|
|
print(('Template \'%s\' already installed, skipping...'
|
|
' (You may want to use the'
|
|
' {reinstall,upgrade,downgrade}'
|
|
' operations.)') % name, file=sys.stderr)
|
|
continue
|
|
|
|
# Check if local versus candidate version is in line with the
|
|
# operation
|
|
if override_existing:
|
|
vm = get_managed_template_vm(app, name)
|
|
pkg_evr = (
|
|
str(package_hdr[rpm.RPMTAG_EPOCHNUM]),
|
|
package_hdr[rpm.RPMTAG_VERSION],
|
|
package_hdr[rpm.RPMTAG_RELEASE])
|
|
vm_evr = query_local_evr(vm)
|
|
cmp_res = rpm.labelCompare(pkg_evr, vm_evr)
|
|
if version_selector == VersionSelector.REINSTALL \
|
|
and cmp_res != 0:
|
|
parser.error(
|
|
'Same version of template \'%s\' not found.' \
|
|
% name)
|
|
elif version_selector == VersionSelector.LATEST_LOWER \
|
|
and cmp_res != -1:
|
|
print(("Template '%s' of lower version"
|
|
" already installed, skipping..." % name),
|
|
file=sys.stderr)
|
|
continue
|
|
elif version_selector == VersionSelector.LATEST_HIGHER \
|
|
and cmp_res != 1:
|
|
print(("Template '%s' of higher version"
|
|
" already installed, skipping..." % name),
|
|
file=sys.stderr)
|
|
continue
|
|
|
|
print('Installing template \'%s\'...' % name, file=sys.stderr)
|
|
extract_rpm(name, rpmfile, target)
|
|
cmdline = [
|
|
'qvm-template-postprocess',
|
|
'--really',
|
|
'--no-installed-by-rpm',
|
|
]
|
|
if args.allow_pv:
|
|
cmdline.append('--allow-pv')
|
|
if args.pool:
|
|
cmdline += ['--pool', args.pool]
|
|
subprocess.check_call(cmdline + [
|
|
'post-install',
|
|
name,
|
|
target + PATH_PREFIX + '/' + name])
|
|
|
|
app.domains.refresh_cache(force=True)
|
|
tpl = app.domains[name]
|
|
|
|
tpl.features['template-name'] = name
|
|
tpl.features['template-epoch'] = \
|
|
package_hdr[rpm.RPMTAG_EPOCHNUM]
|
|
tpl.features['template-version'] = \
|
|
package_hdr[rpm.RPMTAG_VERSION]
|
|
tpl.features['template-release'] = \
|
|
package_hdr[rpm.RPMTAG_RELEASE]
|
|
tpl.features['template-reponame'] = reponame
|
|
tpl.features['template-buildtime'] = \
|
|
str(datetime.datetime.fromtimestamp(
|
|
int(package_hdr[rpm.RPMTAG_BUILDTIME])))
|
|
tpl.features['template-install-time'] = \
|
|
str(datetime.datetime.today())
|
|
tpl.features['template-license'] = \
|
|
package_hdr[rpm.RPMTAG_LICENSE]
|
|
tpl.features['template-url'] = \
|
|
package_hdr[rpm.RPMTAG_URL]
|
|
tpl.features['template-summary'] = \
|
|
package_hdr[rpm.RPMTAG_SUMMARY]
|
|
tpl.features['template-description'] = \
|
|
package_hdr[rpm.RPMTAG_DESCRIPTION].replace('\n', '|')
|
|
finally:
|
|
os.remove(LOCK_FILE)
|
|
|
|
def list_templates(args: argparse.Namespace,
|
|
app: qubesadmin.app.QubesBase, operation: str) -> None:
|
|
"""Command that lists templates.
|
|
|
|
:param args: Arguments received by the application.
|
|
:param app: Qubes application object
|
|
:param operation: If set to ``list``, display a listing similar to ``dnf
|
|
list``. If set to ``info``, display detailed template information
|
|
similar to ``dnf info``. Otherwise, an ``AssertionError`` is raised.
|
|
"""
|
|
tpl_list = []
|
|
|
|
def append_list(data, status, install_time=None):
|
|
_ = install_time # unused
|
|
version_str = build_version_str(
|
|
(data.epoch, data.version, data.release))
|
|
tpl_list.append((status, data.name, version_str, data.reponame))
|
|
|
|
def append_info(data, status, install_time=None):
|
|
tpl_list.append((status, data, install_time))
|
|
|
|
def info_to_human_output(tpls):
|
|
output = []
|
|
# TODO: Do groupby here to avoid including ``status`` in each row.
|
|
for status, data, install_time in tpls:
|
|
output.append((status, 'Name', ':', data.name))
|
|
output.append((status, 'Epoch', ':', data.epoch))
|
|
output.append((status, 'Version', ':', data.version))
|
|
output.append((status, 'Release', ':', data.release))
|
|
output.append((status, 'Size', ':',
|
|
qubesadmin.utils.size_to_human(data.dlsize)))
|
|
output.append((status, 'Repository', ':', data.reponame))
|
|
output.append((status, 'Buildtime', ':', str(data.buildtime)))
|
|
if install_time:
|
|
output.append((status, 'Install time', ':', str(install_time)))
|
|
output.append((status, 'URL', ':', data.url))
|
|
output.append((status, 'License', ':', data.licence))
|
|
output.append((status, 'Summary', ':', data.summary))
|
|
# Only show "Description" for the first line
|
|
title = 'Description'
|
|
for line in data.description.splitlines():
|
|
output.append((status, title, ':', line))
|
|
title = ''
|
|
output.append((status, ' ', ' ', ' ')) # empty line
|
|
return output
|
|
|
|
def info_to_machine_output(tpls):
|
|
output = []
|
|
for status, data, install_time in tpls:
|
|
name, epoch, version, release, reponame, dlsize, \
|
|
buildtime, licence, url, summary, description = data
|
|
dlsize = str(dlsize)
|
|
buildtime = str(buildtime)
|
|
install_time = str(install_time) if install_time else ''
|
|
# TODO: Escape newlines in description?
|
|
output.append((status, name, epoch, version, release, reponame,
|
|
dlsize, buildtime, install_time, licence, url, summary,
|
|
description))
|
|
return output
|
|
|
|
if operation == 'list':
|
|
append = append_list
|
|
elif operation == 'info':
|
|
append = append_info
|
|
else:
|
|
assert False and 'Unknown operation'
|
|
|
|
def append_vm(vm, status):
|
|
append(query_local(vm), status, vm.features['template-install-time'])
|
|
|
|
if not (args.installed or args.available or args.extras or args.upgrades):
|
|
args.all = True
|
|
|
|
if args.all or args.available or args.extras or args.upgrades:
|
|
if args.templates:
|
|
query_res_set: typing.Set[Template] = set()
|
|
for spec in args.templates:
|
|
query_res_set |= set(qrexec_repoquery(args, app, spec))
|
|
query_res = list(query_res_set)
|
|
else:
|
|
query_res = qrexec_repoquery(args, app)
|
|
|
|
if args.installed or args.all:
|
|
for vm in app.domains:
|
|
if is_managed_template(vm):
|
|
if not args.templates or \
|
|
any(is_match_spec(
|
|
vm.name,
|
|
*query_local_evr(vm),
|
|
spec)[0]
|
|
for spec in args.templates):
|
|
append_vm(vm, TemplateState.INSTALLED)
|
|
|
|
if args.available or args.all:
|
|
for data in query_res:
|
|
append(data, TemplateState.AVAILABLE)
|
|
|
|
if args.extras:
|
|
remote = set()
|
|
for data in query_res:
|
|
remote.add(data.name)
|
|
for vm in app.domains:
|
|
if is_managed_template(vm) and vm.name not in remote:
|
|
append_vm(vm, TemplateState.EXTRA)
|
|
|
|
if args.upgrades:
|
|
local = {}
|
|
for vm in app.domains:
|
|
if is_managed_template(vm):
|
|
local[vm.name] = query_local_evr(vm)
|
|
for entry in query_res:
|
|
if entry.name in local:
|
|
if rpm.labelCompare(local[entry.name],
|
|
(entry.epoch, entry.version, entry.release)) < 0:
|
|
append(entry, TemplateState.UPGRADABLE)
|
|
|
|
if len(tpl_list) == 0:
|
|
parser.error('No matching templates to list')
|
|
|
|
if not args.machine_readable:
|
|
if operation == 'info':
|
|
tpl_list = info_to_human_output(tpl_list)
|
|
for status, grp in itertools.groupby(tpl_list, lambda x: x[0]):
|
|
print(status.title())
|
|
qubesadmin.tools.print_table(list(map(lambda x: x[1:], grp)))
|
|
else:
|
|
if operation == 'info':
|
|
tpl_list = info_to_machine_output(tpl_list)
|
|
for status, grp in itertools.groupby(tpl_list, lambda x: x[0]):
|
|
print('|' + status.value)
|
|
for line in grp:
|
|
print('|'.join(line[1:]) + '|')
|
|
|
|
def search(args: argparse.Namespace, app: qubesadmin.app.QubesBase) -> None:
|
|
"""Command that searches template details for given patterns.
|
|
|
|
:param args: Arguments received by the application.
|
|
:param app: Qubes application object
|
|
"""
|
|
# Search in both installed and available templates
|
|
query_res = qrexec_repoquery(args, app)
|
|
for vm in app.domains:
|
|
if is_managed_template(vm):
|
|
query_res.append(query_local(vm))
|
|
|
|
# Get latest version for each template
|
|
query_res_tmp = []
|
|
for _, grp in itertools.groupby(sorted(query_res), lambda x: x[0]):
|
|
def compare(lhs, rhs):
|
|
return lhs if rpm.labelCompare(lhs[1:4], rhs[1:4]) < 0 else rhs
|
|
query_res_tmp.append(functools.reduce(compare, grp))
|
|
query_res = query_res_tmp
|
|
|
|
#pylint: disable=invalid-name
|
|
WEIGHT_NAME_EXACT = 1 << 4
|
|
WEIGHT_NAME = 1 << 3
|
|
WEIGHT_SUMMARY = 1 << 2
|
|
WEIGHT_DESCRIPTION = 1 << 1
|
|
WEIGHT_URL = 1 << 0
|
|
|
|
WEIGHT_TO_FIELD = [
|
|
(WEIGHT_NAME_EXACT, 'Name'),
|
|
(WEIGHT_NAME, 'Name'),
|
|
(WEIGHT_SUMMARY, 'Summary'),
|
|
(WEIGHT_DESCRIPTION, 'Description'),
|
|
(WEIGHT_URL, 'URL')]
|
|
|
|
search_res_by_idx: \
|
|
typing.Dict[int, typing.List[typing.Tuple[int, str, bool]]] = \
|
|
collections.defaultdict(list)
|
|
for keyword in args.templates:
|
|
for idx, entry in enumerate(query_res):
|
|
needle_types = \
|
|
[(entry.name, WEIGHT_NAME), (entry.summary, WEIGHT_SUMMARY)]
|
|
if args.all:
|
|
needle_types += [(entry.description, WEIGHT_DESCRIPTION),
|
|
(entry.url, WEIGHT_URL)]
|
|
for key, weight in needle_types:
|
|
if fnmatch.fnmatch(key, '*' + keyword + '*'):
|
|
exact = keyword == key
|
|
if exact and weight == WEIGHT_NAME:
|
|
weight = WEIGHT_NAME_EXACT
|
|
search_res_by_idx[idx].append((weight, keyword, exact))
|
|
|
|
if not args.all:
|
|
keywords = set(args.templates)
|
|
idxs = list(search_res_by_idx.keys())
|
|
for idx in idxs:
|
|
if keywords != set(x[1] for x in search_res_by_idx[idx]):
|
|
del search_res_by_idx[idx]
|
|
|
|
def key_func(x):
|
|
# ORDER BY weight DESC, list_of_needles ASC, name ASC
|
|
idx, needles = x
|
|
weight = sum(t[0] for t in needles)
|
|
name = query_res[idx][0]
|
|
return (-weight, needles, name)
|
|
|
|
search_res = sorted(search_res_by_idx.items(), key=key_func)
|
|
|
|
def gen_header(needles):
|
|
fields = []
|
|
weight_types = set(x[0] for x in needles)
|
|
for weight, field in WEIGHT_TO_FIELD:
|
|
if weight in weight_types:
|
|
fields.append(field)
|
|
exact = all(x[-1] for x in needles)
|
|
match = 'Exactly Matched' if exact else 'Matched'
|
|
keywords = sorted(list(set(x[1] for x in needles)))
|
|
return ' & '.join(fields) + ' ' + match + ': ' + ', '.join(keywords)
|
|
|
|
last_header = ''
|
|
for idx, needles in search_res:
|
|
# Print headers
|
|
cur_header = gen_header(needles)
|
|
if last_header != cur_header:
|
|
last_header = cur_header
|
|
# XXX: The style is different from that of DNF
|
|
print('===', cur_header, '===')
|
|
print(query_res[idx].name, ':', query_res[idx].summary)
|
|
|
|
def remove(args: argparse.Namespace, app: qubesadmin.app.QubesBase) -> None:
|
|
"""Command that remove templates.
|
|
|
|
:param args: Arguments received by the application.
|
|
:param app: Qubes application object
|
|
"""
|
|
_ = args, app # unused
|
|
|
|
# Remove 'remove' entry from the args...
|
|
operation_idx = sys.argv.index('remove')
|
|
argv = sys.argv[1:operation_idx] + sys.argv[operation_idx+1:]
|
|
|
|
# ...then pass the args to qvm-remove
|
|
# Use exec so stdio can be shared easily
|
|
os.execvp('qvm-remove', ['qvm-remove'] + argv)
|
|
|
|
def clean(args: argparse.Namespace, app: qubesadmin.app.QubesBase) -> None:
|
|
"""Command that cleans the local package cache.
|
|
|
|
:param args: Arguments received by the application.
|
|
:param app: Qubes application object
|
|
"""
|
|
# TODO: More fine-grained options
|
|
_ = app # unused
|
|
|
|
shutil.rmtree(args.cachedir)
|
|
|
|
def main(args: typing.Optional[typing.Sequence[str]] = None,
|
|
app: typing.Optional[qubesadmin.app.QubesBase] = None) -> int:
|
|
"""Main routine of **qvm-template**.
|
|
|
|
:param args: Override arguments received by the application. Optional
|
|
:param app: Override Qubes application object. Optional
|
|
|
|
:return: Return code of the application
|
|
"""
|
|
p_args, unk_args = parser.parse_known_args(args)
|
|
if p_args.operation != 'remove' and unk_args:
|
|
p_args = parser.parse_args(args) # this should result in an error
|
|
assert False and 'This line should not be executed.'
|
|
# FIXME: Currently doing things this way as we have to forward
|
|
# arguments to qvm-remove. While argparse.REMAINDER should be able to
|
|
# solve this, there's a bug (issue 17050) that prevents it from working
|
|
# on inputs where the first argument is an option, like 'qvm-template
|
|
# remove --help'. The bug should be fixed in Python 3.9.
|
|
|
|
if app is None:
|
|
app = qubesadmin.Qubes()
|
|
|
|
if p_args.refresh:
|
|
qrexec_repoquery(p_args, app, refresh=True)
|
|
|
|
if p_args.operation == 'download':
|
|
download(p_args, app)
|
|
elif p_args.operation == 'install':
|
|
install(p_args, app)
|
|
elif p_args.operation == 'reinstall':
|
|
install(p_args, app, version_selector=VersionSelector.REINSTALL,
|
|
override_existing=True)
|
|
elif p_args.operation == 'downgrade':
|
|
install(p_args, app, version_selector=VersionSelector.LATEST_LOWER,
|
|
override_existing=True)
|
|
elif p_args.operation == 'upgrade':
|
|
install(p_args, app, version_selector=VersionSelector.LATEST_HIGHER,
|
|
override_existing=True)
|
|
elif p_args.operation == 'list':
|
|
list_templates(p_args, app, 'list')
|
|
elif p_args.operation == 'info':
|
|
list_templates(p_args, app, 'info')
|
|
elif p_args.operation == 'search':
|
|
search(p_args, app)
|
|
elif p_args.operation == 'remove':
|
|
remove(p_args, app)
|
|
elif p_args.operation == 'clean':
|
|
clean(p_args, app)
|
|
else:
|
|
parser.error('Operation \'%s\' not supported.' % p_args.operation)
|
|
|
|
return 0
|
|
|
|
if __name__ == '__main__':
|
|
sys.exit(main())
|