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# Copyright (C) 2011 Canonical
#
# Authors:
# Michael Vogt
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation; version 3.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
from __future__ import print_function
import apt
from apt.cache import FetchFailedException
import apt_pkg
import difflib
import fnmatch
import glob
import hashlib
import logging
import os
import re
import shutil
import stat
import subprocess
import tarfile
import tempfile
import time
from io import BytesIO, open
if "APT_CLONE_DEBUG_RESOLVER" in os.environ:
apt_pkg.config.set("Debug::pkgProblemResolver", "1")
apt_pkg.config.set("Debug::pkgDepCache::AutoInstall", "1")
class LowLevelCommands(object):
""" calls to the lowlevel operations to install debs
or repack a deb
"""
dpkg_repack = "/usr/bin/dpkg-repack"
def install_debs(self, debfiles, targetdir):
if not debfiles:
return True
install_cmd = ["dpkg", "-i"]
if targetdir != "/":
install_cmd.insert(0, "chroot")
install_cmd.insert(1, targetdir)
ret = subprocess.call(install_cmd + debfiles)
return (ret == 0)
def repack_deb(self, pkgname, targetdir):
""" dpkg-repack pkgname into targetdir """
if not os.path.exists(self.dpkg_repack):
raise IOError("no '%s' found" % self.dpkg_repack)
repack_cmd = [self.dpkg_repack]
if not os.getuid() == 0:
if not os.path.exists("/usr/bin/fakeroot"):
return
repack_cmd = ["fakeroot", "-u"] + repack_cmd
ret = subprocess.call(repack_cmd + [pkgname], cwd=targetdir)
return (ret == 0)
def debootstrap(self, targetdir, distro=None):
if distro is None:
import lsb_release
distro = lsb_release.get_distro_information()['CODENAME']
ret = subprocess.call(["debootstrap", distro, targetdir])
return (ret == 0)
def merge_keys(self, fromkeyfile, intokeyfile):
ret = subprocess.call(['apt-key', '--keyring', intokeyfile,
'add', fromkeyfile])
return (ret == 0)
def bind_mount(self, olddir, newdir):
ret = subprocess.call(["mount", "--bind", olddir, newdir])
return (ret == 0)
def bind_umount(self, binddir):
ret = subprocess.call(["umount", binddir])
return (ret == 0)
class AptClone(object):
""" clone the package selection/installation of a existing system
using the information that apt provides
If dpkg-repack is installed, it will be used to generate debs
for the obsolete ones.
"""
CLONE_FILENAME = "apt-clone-state-%s.tar.gz" % os.uname()[1]
TARPREFIX = "./"
def __init__(self, fetch_progress=None, install_progress=None,
cache_cls=None):
self.not_downloadable = set()
self.version_mismatch = set()
self.commands = LowLevelCommands()
# fetch
if fetch_progress:
self.fetch_progress = fetch_progress
else:
self.fetch_progress = apt.progress.text.AcquireProgress()
# install
if install_progress:
self.install_progress = install_progress
else:
self.install_progress = apt.progress.base.InstallProgress()
# FIXME: SIIIIILLLLLLLYYYYYYYYY use mock.patch instead to patch
# the apt.Cache() to a mock
# cache class (e.g. apt.Cache)
if cache_cls:
self._cache_cls = cache_cls
else:
self._cache_cls = apt.Cache
# save
def save_state(self, sourcedir, target,
with_dpkg_repack=False, with_dpkg_status=False,
scrub_sources=False, extra_files=None):
""" save the current system state (installed pacakges, enabled
repositories ...) into the apt-state.tar.gz file in targetdir
"""
if os.path.isdir(target):
target = os.path.join(target, self.CLONE_FILENAME)
else:
if not target.endswith(".tar.gz"):
target += ".apt-clone.tar.gz"
if sourcedir != '/':
apt_pkg.init_config()
apt_pkg.config.set("Dir", sourcedir)
apt_pkg.config.set("Dir::State::status",
os.path.join(sourcedir, 'var/lib/dpkg/status'))
apt_pkg.init_system()
with tarfile.open(name=target, mode="w:gz") as tar:
self._write_uname(tar)
self._write_state_installed_pkgs(sourcedir, tar)
self._write_state_auto_installed(tar)
self._write_state_sources_list(tar, scrub_sources)
self._write_state_apt_preferences(tar)
self._write_state_apt_keyring(tar)
self._write_state_extra_files(extra_files, tar)
if with_dpkg_status:
self._write_state_dpkg_status(tar)
if with_dpkg_repack:
self._dpkg_repack(tar)
def _get_host_info_dict(self):
# not really uname
host_info = { 'hostname' : os.uname()[1],
'kernel' : os.uname()[2],
'uname_arch' : os.uname()[4],
'arch' : apt_pkg.config.find("APT::Architecture")
}
return host_info
def _write_uname(self, tar):
host_info = self._get_host_info_dict()
# save it
f = tempfile.NamedTemporaryFile(mode='w')
info = "\n".join(["%s: %s" % (key, value)
for (key, value) in host_info.items()])
f.write(info+"\n")
f.flush()
tar.add(f.name, arcname="./var/lib/apt-clone/uname")
def _write_state_extra_files(self, extra_files, tar):
if extra_files is None:
return
for p in extra_files:
for f in glob.glob(p):
tar.add(f, arcname="./extra-files"+f)
def _write_state_installed_pkgs(self, sourcedir, tar):
cache = self._cache_cls(rootdir=sourcedir)
s = ""
foreign = ""
for pkg in cache:
if pkg.is_installed:
# a version identifies the pacakge
s += "%s %s %s\n" % (
pkg.name, pkg.installed.version, int(pkg.is_auto_installed))
if not pkg.candidate or not pkg.candidate.downloadable:
self.not_downloadable.add(pkg.name)
elif not (pkg.installed.downloadable and
pkg.candidate.downloadable):
self.version_mismatch.add(pkg.name)
for o in pkg.installed.origins:
if o.archive == "now" and o.origin == "":
continue
import lsb_release
distro_id = lsb_release.get_distro_information()['ID']
if o.origin != distro_id:
foreign += "%s %s %s\n" % (
pkg.name, pkg.installed.version,
o.origin if o.origin != "" else "unknown")
break
# store the installed.pkgs
tarinfo = tarfile.TarInfo("./var/lib/apt-clone/installed.pkgs")
s = s.encode('utf-8')
tarinfo.size = len(s)
tarinfo.mtime = time.time()
tar.addfile(tarinfo, BytesIO(s))
# store the foreign packages
tarinfo = tarfile.TarInfo("./var/lib/apt-clone/foreign.pkgs")
foreign = foreign.encode('utf-8')
tarinfo.size = len(foreign)
tarinfo.mtime = time.time()
tar.addfile(tarinfo, BytesIO(foreign))
def _write_state_dpkg_status(self, tar):
# store dpkg-status, this is not strictly needed as installed.pkgs
# should contain all we need, but we still keep it for debugging
# reasons
dpkg_status = apt_pkg.config.find_file("dir::state::status")
tar.add(dpkg_status, arcname="./var/lib/apt-clone/dpkg-status")
def _write_state_auto_installed(self, tar):
extended_states = apt_pkg.config.find_file(
"Dir::State::extended_states")
if os.path.exists(extended_states):
tar.add(extended_states, "./var/lib/apt-clone/extended_states")
def _write_state_apt_preferences(self, tar):
f = apt_pkg.config.find_file("Dir::Etc::preferences")
if os.path.exists(f):
tar.add(f, arcname="./etc/apt/preferences")
p = apt_pkg.config.find_dir("Dir::Etc::preferencesparts",
"/etc/apt/preferences.d")
if os.path.exists(p):
tar.add(p, arcname="./etc/apt/preferences.d")
def _write_state_apt_keyring(self, tar):
f = apt_pkg.config.find_file("Dir::Etc::trusted")
if os.path.exists(f):
tar.add(f, arcname="./etc/apt/trusted.gpg")
p = apt_pkg.config.find_dir("Dir::Etc::trustedparts",
"/etc/apt/trusted.gpg.d")
if os.path.exists(p):
tar.add(p, arcname="./etc/apt/trusted.gpg.d")
def _write_state_sources_list(self, tar, scrub=False):
sources_list = apt_pkg.config.find_file("Dir::Etc::sourcelist")
self._add_file_to_tar_with_password_check(tar, sources_list, scrub,
"./etc/apt/sources.list")
source_parts = apt_pkg.config.find_dir("Dir::Etc::sourceparts")
if os.path.exists(source_parts):
tar.add(source_parts, arcname="./etc/apt/sources.list.d",
recursive=False)
for source in os.listdir(source_parts):
if source.startswith('.'):
continue
if not source.endswith('.list'):
continue
sources_file_name = '%s/%s' % (source_parts, source)
if os.path.isdir(sources_file_name):
continue
self._add_file_to_tar_with_password_check(tar,
sources_file_name, scrub,
"./etc/apt/sources.list.d/"+source)
def _add_file_to_tar_with_password_check(self, tar, sources, scrub, arcname):
if scrub:
with tempfile.NamedTemporaryFile(mode='wb') as source_copy, open(sources, 'rb') as f:
for line in f.readlines():
# compat with both py2/py3
if type(line) is bytes:
line = line.decode("UTF-8")
if re.search('/[^/@:]*:[^/@:]*@', line):
line = re.sub('/[^/@:]*:[^/@:]*@',
'/USERNAME:PASSWORD@', line)
# tempfile.NamedTemporaryFile cannot easily be made to
# open in Unicode mode in Python 2. We can remove this
# once ubuntu-release-upgrader is run under Python 3
# (i.e. after Ubuntu 14.04).
source_copy.write(line.encode("utf-8"))
source_copy.flush()
tar.add(source_copy.name, arcname=arcname)
else:
tar.add(sources, arcname=arcname)
def _write_modified_files_from_etc(self, tar):
#etcdir = os.path.join(apt_pkg.config.get("Dir"), "etc")
pass
def _dpkg_repack(self, tar):
tdir = tempfile.mkdtemp()
for pkgname in self.not_downloadable:
self.commands.repack_deb(pkgname, tdir)
tar.add(tdir, arcname="./var/lib/apt-clone/debs")
shutil.rmtree(tdir)
#print(tdir)
# detect prefix
def _detect_tarprefix(self, tar):
#print(tar.getnames())
if tar.getnames()[-1].startswith("./"):
self.TARPREFIX = "./"
else:
self.TARPREFIX = ""
# info
def _get_info_distro(self, statefile):
with tarfile.open(statefile) as tar:
self._detect_tarprefix(tar)
# guess distro infos
f = tar.extractfile(self.TARPREFIX+"etc/apt/sources.list")
for line in f.readlines():
line = line.decode("utf-8")
if line.startswith("#") or line.strip() == "":
continue
l = line.split()
if len(l) > 2 and not l[2].endswith("/"):
return l[2]
return None
def _get_clone_info_dict(self, statefile):
distro = self._get_info_distro(statefile) or "unknown"
# nr installed
with tarfile.open(statefile) as tar:
f = tar.extractfile(
self.TARPREFIX + "var/lib/apt-clone/installed.pkgs")
installed = autoinstalled = 0
meta = []
for line in f.readlines():
line = line.decode("utf-8")
(name, version, auto) = line.strip().split()
installed += 1
if int(auto):
autoinstalled += 1
# FIXME: this is a bad way to figure out about the
# meta-packages
if name.endswith("-desktop"):
meta.append(name)
# date
m = tar.getmember(
self.TARPREFIX + "var/lib/apt-clone/installed.pkgs")
date = m.mtime
# check hostname (if found)
hostname = "unknown"
arch = "unknown"
if self.TARPREFIX+"var/lib/apt-clone/uname" in tar.getnames():
info = tar.extractfile(
self.TARPREFIX + "var/lib/apt-clone/uname").read()
section = apt_pkg.TagSection(info)
hostname = section.get("hostname", "unknown")
arch = section.get("arch", "unknown")
return { 'hostname' : hostname,
'distro' : distro,
'meta' : ", ".join(meta),
'installed' : installed,
'autoinstalled' : autoinstalled,
'date' : time.ctime(date),
'arch' : arch,
}
def info(self, statefile):
return "Hostname: %(hostname)s\n"\
"Arch: %(arch)s\n"\
"Distro: %(distro)s\n"\
"Meta: %(meta)s\n"\
"Installed: %(installed)s pkgs (%(autoinstalled)s automatic)\n"\
"Date: %(date)s\n" % self._get_clone_info_dict(statefile)
# show-diff
def _get_file_diff_against_clone(self, statefile, system_file, targetdir):
with tarfile.open(statefile) as tar:
self._detect_tarprefix(tar)
clone_file = tar.extractfile(self.TARPREFIX+system_file[1:])
clone_file_lines = []
# FIXME: is there a better way for this? something to tell
# tarfile that really its all utf8?
for line in clone_file.readlines():
clone_file_lines.append(line.decode("utf-8"))
system_file = targetdir+system_file
if os.path.exists(system_file):
with open(system_file) as fp:
system_file_lines = fp.readlines()
else:
system_file_lines = []
gen = difflib.unified_diff(
system_file_lines, clone_file_lines,
fromfile="current-system%s" % system_file, tofile=system_file)
diff = []
for line in gen:
diff.append(line)
return diff
def show_diff(self, statefile, targetdir="/"):
if targetdir != "/":
apt_pkg.config.set("DPkg::Chroot-Directory", targetdir)
# show info/uname diff
print("Clone info differences: ")
host_info = self._get_host_info_dict()
clone_info = self._get_clone_info_dict(statefile)
for key in host_info:
if host_info.get(key, None) != clone_info.get(key, None):
print(" '%s': clone='%s' system='%s'" % (
key, clone_info.get(key, None),
host_info.get(key, None)))
print("")
# show sources.list{,.d} diff
sources_list_system = "/etc/apt/sources.list"
diff = self._get_file_diff_against_clone(
statefile, sources_list_system, targetdir)
if diff:
print("".join(diff))
# FIXME: do sources.list.d diff too
# FIXME: do apt-keyring diff
#self._restore_package_selection(statefile, targetdir, protect_installed)
# create new cache in the rootdir
cache = self._cache_cls(rootdir=targetdir)
with tarfile.open(statefile) as tar:
f = tar.extractfile(
self.TARPREFIX + "var/lib/apt-clone/installed.pkgs")
# get the data
installed_in_clone = {}
for line in f.readlines():
line = line.strip().decode('utf-8')
if line.startswith("#") or line == "":
continue
(name, version, auto) = line.split()
installed_in_clone[name] = (version, auto)
installed_on_system = {}
for pkg in cache:
if not pkg.installed:
continue
installed_on_system[pkg.name] = (
pkg.installed.version, str(pkg.is_auto_installed))
only_on_system = set(installed_on_system.keys()) - set(installed_in_clone.keys())
if only_on_system:
print("Installed on the system but not in the clone-file:")
print(" ".join(sorted(only_on_system)))
print("\n")
only_in_clone = set(installed_in_clone.keys()) - set(installed_on_system.keys())
if only_in_clone:
print("Installed in the clone-file but not in the system:")
print(" ".join(sorted(only_in_clone)))
print("\n")
# show version differences
pkgversion_differences = set()
for pkgname in sorted(installed_in_clone):
if not pkgname in installed_on_system:
continue
clone_file_pkgversion, clone_is_auto = installed_in_clone[pkgname]
system_pkgversion, sys_is_auto = installed_on_system[pkgname]
if clone_file_pkgversion != system_pkgversion:
pkgversion_differences.add(
(pkgname, clone_file_pkgversion, system_pkgversion))
if pkgversion_differences:
print("Version differences: ")
print("Pkgname <clone-file-version> <system-version>")
for pkgname, clone_ver, system_ver in pkgversion_differences:
print(" %s <%s> <%s>" % (pkgname, clone_ver, system_ver))
# restore
def restore_state(self, statefile, targetdir="/", exclude_pkgs=None,
new_distro=None, protect_installed=False, mirror=None):
""" take a statefile produced via (like apt-state.tar.gz)
save_state() and restore the packages/repositories
into targetdir (that is usually "/")
"""
if targetdir != "/":
apt_pkg.config.set("DPkg::Chroot-Directory", targetdir)
self.commands.bind_mount("/proc", os.path.join(targetdir, "proc"))
self.commands.bind_mount("/sys", os.path.join(targetdir, "sys"))
# detect prefix
with tarfile.open(statefile) as tar:
self._detect_tarprefix(tar)
if not os.path.exists(targetdir):
print("Dir '%s' does not exist, need to bootstrap first" % targetdir)
distro = self._get_info_distro(statefile)
self.commands.debootstrap(targetdir, distro)
self._restore_sources_list(statefile, targetdir, mirror=mirror)
self._restore_apt_keyring(statefile, targetdir)
if new_distro:
self._rewrite_sources_list(targetdir, new_distro)
self._restore_package_selection(statefile, targetdir, protect_installed, exclude_pkgs)
# FIXME: this needs to check if there are conflicts, e.g. via
# gdebi
self._restore_not_downloadable_debs(statefile, targetdir)
# restore after package to avoid e.g. conffile prompts
self._restore_extra_files(statefile, targetdir)
# and umount again
if targetdir != "/":
self.commands.bind_umount(os.path.join(targetdir, "proc"))
self.commands.bind_umount(os.path.join(targetdir, "sys"))
# simulate restore and return list of missing pkgs
def simulate_restore_state(self, statefile, exclude_pkgs, new_distro=None):
# create tmp target (with host system dpkg-status) to simulate in
target = tempfile.mkdtemp()
dpkg_status = apt_pkg.config.find_file("dir::state::status")
if not os.path.exists(target+os.path.dirname(dpkg_status)):
os.makedirs(target+os.path.dirname(dpkg_status))
shutil.copy(dpkg_status, target+dpkg_status)
# restore sources.list and update cache in tmp target
self._restore_sources_list(statefile, target)
# optionally rewrite on new distro
if new_distro:
self._rewrite_sources_list(target, new_distro)
cache = self._cache_cls(rootdir=target)
try:
cache.update(apt.progress.base.AcquireProgress())
except FetchFailedException:
# This cannot be resolved here, but it should not be interpreted as
# a fatal error.
pass
cache.open()
# try to replay cache and see thats missing
missing = self._restore_package_selection_in_cache(statefile, cache, exclude_pkgs=exclude_pkgs)
shutil.rmtree(target)
return missing
def _restore_sources_list(self, statefile, targetdir, mirror=None):
with tarfile.open(statefile) as tar:
existing = os.path.join(targetdir, "etc", "apt", "sources.list")
if os.path.exists(existing):
shutil.copy(existing, '%s.apt-clone' % existing)
tar.extract(self.TARPREFIX+"etc/apt/sources.list", targetdir)
td_sources = os.path.join(targetdir, "etc", "apt", "sources.list")
os.chmod(td_sources, stat.S_IRUSR | stat.S_IWUSR | stat.S_IRGRP |
stat.S_IROTH)
if mirror:
from aptsources.sourceslist import SourcesList
apt_pkg.config.set("Dir::Etc::sourcelist", td_sources)
sources = SourcesList()
for entry in sources.list[:]:
if entry.uri != mirror:
entry.uri = mirror
sources.save()
try:
tar.extract(self.TARPREFIX+"etc/apt/sources.list.d", targetdir)
except KeyError:
pass
def _restore_apt_keyring(self, statefile, targetdir):
existing = os.path.join(targetdir, "etc", "apt", "trusted.gpg")
backup = '%s.apt-clone' % existing
if os.path.exists(existing):
shutil.copy(existing, backup)
with tarfile.open(statefile) as tar:
try:
tar.extract(self.TARPREFIX+"etc/apt/trusted.gpg", targetdir)
except KeyError:
pass
try:
tar.extract(self.TARPREFIX+"etc/apt/trusted.gpg.d", targetdir)
except KeyError:
pass
if os.path.exists(backup):
self.commands.merge_keys(backup, existing)
os.remove(backup)
def _restore_package_selection_in_cache(self, statefile, cache, protect_installed=False, exclude_pkgs=None):
# deal with excludes
if exclude_pkgs is None:
exclude_pkgs = []
exclude_pkgs = set(exclude_pkgs)
# reinstall packages
missing = set()
pkgs = set()
# procted installed pkgs
resolver = apt_pkg.ProblemResolver(cache._depcache)
if protect_installed:
for pkg in cache:
if pkg.is_installed:
resolver.protect(pkg._pkg)
# get the installed.pkgs data
with tarfile.open(statefile) as tar:
f = tar.extractfile(
self.TARPREFIX + "var/lib/apt-clone/installed.pkgs")
# the actiongroup will help libapt to speed up the following loop
with cache.actiongroup():
for line in f.readlines():
line = line.strip().decode('utf-8')
if line.startswith("#") or line == "":
continue
(name, version, auto) = line.split()
# tiny helper
def is_excluded(name, exclude_pkgs):
for excl in exclude_pkgs:
if fnmatch.fnmatch(name, excl):
return True
if is_excluded(name, exclude_pkgs):
continue
pkgs.add(name)
auto_installed = int(auto)
from_user = not auto_installed
if name in cache:
try:
# special mode, most useful for release-upgrades
if protect_installed:
cache[name].mark_install(from_user=from_user, auto_fix=False)
if cache.broken_count > 0:
resolver.resolve()
if not cache[name].marked_install:
raise SystemError("pkg %s not marked upgrade" % name)
else:
# normal mode, this assume the system is consistent
cache[name].mark_install(from_user=from_user)
except SystemError as e:
logging.warning("can't add %s (%s)" % (name, e))
missing.add(name)
# ensure the auto install info is
cache[name].mark_auto(auto_installed)
# check what is broken and try to fix
if cache.broken_count > 0:
resolver.resolve()
# now go over and see what is missing
for pkg in pkgs:
if not pkg in cache:
missing.add(pkg)
continue
if not (cache[pkg].is_installed or cache[pkg].marked_install):
missing.add(pkg)
return missing
def _restore_package_selection(self, statefile, targetdir, protect_installed, exclude_pkgs):
# create new cache
cache = self._cache_cls(rootdir=targetdir)
# python-apt Cache(rootdir=) will mangle dir::bin, fix that
apt.apt_pkg.config.set("Dir::Bin", "/")
apt.apt_pkg.config.set("Dir::Bin::dpkg", "/usr/bin/dpkg")
try:
cache.update(self.fetch_progress)
except FetchFailedException:
# This cannot be resolved here, but it should not be interpreted as
# a fatal error.
pass
cache.open()
self._restore_package_selection_in_cache(statefile, cache, protect_installed, exclude_pkgs)
# do it
cache.commit(self.fetch_progress, self.install_progress)
def _restore_extra_files(self, statefile, targetdir):
with tarfile.open(statefile) as tar:
for m in tar.getmembers():
prefix = self.TARPREFIX+"extra-files/"
if m.name.startswith(prefix):
# strip prefix on extract
m.name = m.name[len(prefix):]
tar.extract(m, targetdir)
def _restore_not_downloadable_debs(self, statefile, targetdir):
with tarfile.open(statefile) as tar:
try:
debsdir = [ tarinfo for tarinfo in tar.getmembers() if tarinfo.name.startswith(self.TARPREFIX+"var/lib/apt-clone/debs/")]
tar.extractall(targetdir,debsdir)
except KeyError:
return
debs = []
path = os.path.join(targetdir, "./var/lib/apt-clone/debs")
for deb in glob.glob(os.path.join(path, "*.deb")):
debpath = os.path.join(path, deb)
debs.append(debpath)
self.commands.install_debs(debs, targetdir)
def _rewrite_sources_list(self, targetdir, new_distro):
from aptsources.sourceslist import SourcesList, SourceEntry
apt_pkg.config.set(
"Dir::Etc::sourcelist",
os.path.abspath(os.path.join(targetdir, "etc", "apt", "sources.list")))
apt_pkg.config.set(
"Dir::Etc::sourceparts",
os.path.abspath(os.path.join(targetdir, "etc", "apt", "sources.list.d")))
sources = SourcesList()
for entry in sources.list[:]:
if entry.invalid or entry.disabled:
continue
replacement = ''
for pocket in ('updates', 'security', 'backports'):
if entry.dist.endswith('-%s' % pocket):
replacement = '%s-%s' % (new_distro, pocket)
break
if replacement:
entry.dist = replacement
else:
entry.dist = new_distro
existing = os.path.join(targetdir, "etc", "apt",
"sources.list.apt-clone")
sourcelist = apt_pkg.config.find_file("Dir::Etc::sourcelist")
if os.path.exists(existing):
with open(existing, 'r') as fp:
for line in fp:
src = SourceEntry(line, sourcelist)
if (src.invalid or src.disabled) or src not in sources:
sources.list.append(src)
os.remove(existing)
for entry in sources.list:
if entry.uri.startswith('cdrom:'):
# Make sure CD entries come first.
sources.list.remove(entry)
sources.list.insert(0, entry)
entry.disabled = True
sources.save()
def _find_unowned_in_etc(self, sourcedir=""):
if sourcedir:
etcdir = os.path.join(sourcedir, "etc")
else:
etcdir = "/etc"
# get all the files that dpkg "owns"
owned = set()
dpkg_basedir = os.path.dirname(apt_pkg.config.get("Dir::State::status"))
for f in glob.glob(os.path.join(dpkg_basedir, "info", "*.list")):
with open(f, encoding="utf-8") as fp:
for line in fp:
if line.startswith("/etc/"):
owned.add(line.strip())
# now go over etc
unowned = set()
for dirpath, dirnames, filenames in os.walk(etcdir):
for name in filenames:
fullname = os.path.join(dirpath[len(sourcedir):], name)
if not fullname in owned:
unowned.add(fullname)
return unowned
def _find_modified_conffiles(self, sourcedir="/"):
dpkg_status = sourcedir+apt_pkg.config.find("Dir::State::status")
modified = set()
# iterate dpkg-status file
with open(dpkg_status) as fp:
tag = apt_pkg.TagFile(fp)
for entry in tag:
if "conffiles" in entry:
for line in entry["conffiles"].split("\n"):
obsolete = None
if len(line.split()) == 3:
name, md5sum, obsolete = line.split()
else:
name, md5sum = line.split()
# update
path = sourcedir+name
md5sum = md5sum.strip()
# ignore oboslete conffiles
if obsolete == "obsolete":
continue
# user removed conffile
if not os.path.exists(path):
logging.debug("conffile %s removed" % path)
modified.add(path)
continue
# check content
md5 = hashlib.md5()
with open(path, 'rb') as fp:
md5.update(fp.read())
if md5.hexdigest() != md5sum:
logging.debug("conffile %s (%s != %s)" % (
path, md5.hexdigest(), md5sum))
modified.add(path)
return modified
def _dump_debconf_database(self, sourcedir):
print("not implemented yet")
# debconf-copydb configdb newdb --config=Name:newdb --config=Driver:File --config=Filename:/tmp/lala.db
#
# debconf-copydb newdb configdb --config=Name:newdb --config=Driver:File --config=Filename:/tmp/lala.db
#
# dump to text with:
# debconf-copydb configdb pipe --config=Name:pipe
# --config=Driver:Pipe --config=InFd:none
#
# restore from text with:
# ssh remotehost debconf-copydb pipe configdb --config=Name:pipe --config=Driver:Pipe
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