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apt_dpkg.py
"""apport.PackageInfo class implementation for python-apt and dpkg. This is used on Debian and derivatives such as Ubuntu. """ # Copyright (C) 2007 - 2011 Canonical Ltd. # Author: Martin Pitt <martin.pitt@ubuntu.com> # # 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; either version 2 of the License, or (at your # option) any later version. See http://www.gnu.org/copyleft/gpl.html for # the full text of the license. # pylint: disable=too-many-lines # TODO: Address following pylint complaints # pylint: disable=invalid-name # From Python 3.12 on, it doesn't try to evaluate type signatures at runtime # anymore. This behaviour is helpful to us as apt_sl.Deb822SourceEntry isn't # always a valid type, so use the __future__ mechanism to have this behaviour # in older versions as well. from __future__ import annotations import contextlib import datetime import functools import glob import gzip import hashlib import http.client import json import logging import os import pathlib import pickle import platform import re import shutil import stat import subprocess import sys import tempfile import time import urllib.error import urllib.parse import urllib.request from collections.abc import Iterable, Iterator import apt import apt_pkg import aptsources.sourceslist as apt_sl from aptsources.sourceslist import SourceEntry import apport.logging from apport.packaging import PackageInfo WITH_DEB822_SUPPORT = hasattr(apt_sl, "Deb822SourceEntry") # pylint: disable-next=no-member def _parse_deb822_sources(source: str) -> list[apt_sl.Deb822SourceEntry]: if not WITH_DEB822_SUPPORT: return [] sections = [] current = [] with open(source, encoding="utf-8") as f: for line in f.read().split("\n"): line = line.rstrip() if line: if not line.lstrip().startswith("#"): current.append(line) else: if not current: continue # pylint: disable-next=no-member sections.append(apt_sl.Deb822SourceEntry("\n".join(current), source)) current = [] if current: # pylint: disable-next=no-member sections.append(apt_sl.Deb822SourceEntry("\n".join(current), source)) return sections def _order_sources(apt_sources: list[str]) -> Iterator[str]: """Order APT sources files heuristically to get the primary sources first.""" sources = set(apt_sources) info = platform.freedesktop_os_release() expected_primary = f"{info['ID']}.sources" try: sources.remove(expected_primary) yield expected_primary except KeyError: pass yield from sorted(sources) # pylint: disable-next=no-member def _load_all_sources(apt_dir: str) -> list[apt_sl.Deb822SourceEntry | SourceEntry]: """Given an APT configuration directory (e.g. /etc/apt/), loads up all the source data in one easy-to-consume list. """ sources_d = os.path.join(apt_dir, "sources.list.d") if os.path.exists(sources_d): to_inspect = [ os.path.join(sources_d, f) for f in _order_sources(os.listdir(sources_d)) ] else: to_inspect = [] sources_old_file = os.path.join(apt_dir, "sources.list") if os.path.exists(sources_old_file): to_inspect[0:0] = [sources_old_file] sources = [] for path in to_inspect: if path.endswith(".list"): with open(path, encoding="utf-8") as f: sources.extend([SourceEntry(line, path) for line in f]) elif path.endswith(".sources") and WITH_DEB822_SUPPORT: sources.extend(_parse_deb822_sources(path)) return sources def _map_mirror_to_arch(uri: str, target_arch: str) -> str: """Map the givin archive mirror URI to a valid one for the givin architecture. The Ubuntu archive is split. The primary mirrors only has packages for the amd64 and i386 architectures. The ports mirrors host all remaining architectures. """ if target_arch in {"amd64", "i386"}: ports_match = re.match("http://([a-z.]+)?ports.ubuntu.com/ubuntu-ports/?", uri) if ports_match: return f"http://{ports_match.group(1)}archive.ubuntu.com/ubuntu" return uri primary_match = re.match("http://([a-z.]+)?archive.ubuntu.com/ubuntu/?$", uri) if primary_match: return f"http://{primary_match.group(1)}ports.ubuntu.com/ubuntu-ports" return uri def _read_mirror_file(uri: str) -> list[str]: """Read an apt-transport-mirror configuration file. Note: The metadata will be stripped for simplicity reasons. """ assert uri.startswith("mirror+file:") path = pathlib.Path(uri[12:]) lines = [line.strip() for line in path.read_text("utf-8").split("\n")] mirrors = [ line.split("\t", maxsplit=1)[0] for line in lines if line and line[0] != "#" ] return mirrors def _usr_merge_alternative(path: str) -> str | None: """Determine /usr-merge alternative name. With /usr-merge some binaries appear in /usr but their .list file doesn't reflect that. Vice-versa is possible as well. So strip or add the /usr from the path. Return None in case there is no alternative path. """ if re.match("^/usr/(bin|lib|lib32|lib64|libx32|sbin)/", path): return path[4:] if re.match("^/(bin|lib|lib32|lib64|libx32|sbin)/", path): return f"/usr{path}" return None class __AptDpkgPackageInfo(PackageInfo): # pylint: disable=too-many-instance-attributes,too-many-public-methods """Concrete apport.packaging.PackageInfo class implementation for python-apt and dpkg, as found on Debian and derivatives such as Ubuntu.""" def __init__(self) -> None: self._apt_cache: apt.Cache | None = None self._current_release_codename: str | None = None self._sandbox_apt_cache: apt.Cache | None = None self._sandbox_apt_cache_arch: str | None = None self._contents_dir: str | None = None self._mirror: str | None = None self._virtual_mapping_obj: dict[str, set[str]] | None = None self._contents_mapping_obj: dict[bytes, bytes] | None = None self._launchpad_base = "https://api.launchpad.net/devel" self._contents_update = False def __del__(self) -> None: try: if self._contents_dir: shutil.rmtree(self._contents_dir) except AttributeError: pass def _virtual_mapping(self, configdir: str) -> dict[str, set[str]]: if self._virtual_mapping_obj is not None: return self._virtual_mapping_obj mapping_file = os.path.join(configdir, "virtual_mapping.pickle") if os.path.exists(mapping_file): with open(mapping_file, "rb") as fp: self._virtual_mapping_obj = pickle.load(fp) else: self._virtual_mapping_obj = {} return self._virtual_mapping_obj def _save_virtual_mapping(self, configdir: str) -> None: mapping_file = os.path.join(configdir, "virtual_mapping.pickle") if self._virtual_mapping_obj is not None: with open(mapping_file, "wb") as fp: pickle.dump(self._virtual_mapping_obj, fp) def _contents_mapping(self, configdir, release, arch): if ( self._contents_mapping_obj and self._contents_mapping_obj["release"] == release and self._contents_mapping_obj["arch"] == arch ): return self._contents_mapping_obj mapping_file = os.path.join( configdir, f"contents_mapping-{release}-{arch}.pickle" ) if os.path.exists(mapping_file) and os.stat(mapping_file).st_size == 0: os.remove(mapping_file) if os.path.exists(mapping_file): with open(mapping_file, "rb") as fp: self._contents_mapping_obj = pickle.load(fp) else: self._contents_mapping_obj = {"release": release, "arch": arch} return self._contents_mapping_obj def _save_contents_mapping(self, configdir, release, arch): mapping_file = os.path.join( configdir, f"contents_mapping-{release}-{arch}.pickle" ) if self._contents_mapping_obj is not None: try: with open(mapping_file, "wb") as fp: pickle.dump(self._contents_mapping_obj, fp) # rather than crashing on systems with little memory just don't # write the crash file except MemoryError: pass def _clear_apt_cache(self) -> None: # The rootdir option to apt.Cache modifies the global state apt_pkg.config.clear("Dir") apt_pkg.init_config() apt_pkg.init_system() self._apt_cache = None self._sandbox_apt_cache = None def _cache(self): """Return apt.Cache() (initialized lazily).""" if not self._apt_cache: self._clear_apt_cache() # avoid spewage on stdout progress = apt.progress.base.OpProgress() self._apt_cache = apt.Cache(progress=progress) return self._apt_cache def _sandbox_cache( self, aptroot, apt_dir, fetchProgress, distro_name, release_codename, origins, arch, ): # pylint: disable=too-many-arguments """Build apt sandbox and return apt.Cache(rootdir=) (initialized lazily). Clear the package selection on subsequent calls. """ if not self._sandbox_apt_cache or arch != self._sandbox_apt_cache_arch: self._clear_apt_cache() self._build_apt_sandbox( aptroot, apt_dir, distro_name, release_codename, origins ) rootdir = os.path.abspath(aptroot) self._sandbox_apt_cache = apt.Cache(rootdir=rootdir) self._sandbox_apt_cache_arch = arch try: # We don't need to update this multiple times. self._sandbox_apt_cache.update(fetchProgress) except apt.cache.FetchFailedException as error: raise SystemError(str(error)) from error self._sandbox_apt_cache.open() else: self._sandbox_apt_cache.clear() return self._sandbox_apt_cache def _apt_pkg(self, package): """Return apt.Cache()[package] (initialized lazily). Throw a ValueError if the package does not exist. """ try: return self._cache()[package] except KeyError: raise ValueError(f"package {package} does not exist") from None def get_version(self, package): """Return the installed version of a package.""" pkg = self._apt_pkg(package) inst = pkg.installed if not inst: raise ValueError(f"package {package} does not exist") return inst.version def get_available_version(self, package: str) -> str: """Return the latest available version of a package.""" return self._apt_pkg(package).candidate.version def get_dependencies(self, package: str) -> list[str]: """Return a list of packages a package depends on.""" cur_ver = self._apt_pkg(package).installed if not cur_ver: # happens with virtual packages return [] return [ d[0].name for d in cur_ver.get_dependencies("Depends", "PreDepends", "Recommends") ] def get_source(self, package: str) -> str: """Return the source package name for a package.""" if self._apt_pkg(package).installed: return self._apt_pkg(package).installed.source_name if self._apt_pkg(package).candidate: return self._apt_pkg(package).candidate.source_name raise ValueError(f"package {package} does not exist") def get_package_origin(self, package: str) -> str | None: """Return package origin. Return the repository name from which a package was installed, or None if it cannot be determined. Throw ValueError if package is not installed. """ pkg = self._apt_pkg(package).installed if not pkg: raise ValueError("package is not installed") for origin in pkg.origins: if origin.origin: return origin.origin return None def is_distro_package(self, package: str) -> bool: """Check if a package is a genuine distro package. Return True for a native distro package, False if it comes from a third-party source. """ pkg = self._apt_pkg(package) # some PPA packages have installed version None, see LP#252734 if pkg.installed and pkg.installed.version is None: return False if not pkg.candidate: return False origins = {o.origin for o in pkg.candidate.origins} distro_name = self.get_os_version()[0] if distro_name in origins: return True # on Ubuntu system-image we might not have any /var/lib/apt/lists if origins == {""} and os.path.exists("/etc/system-image/channel.ini"): return True return False def is_native_origin_package(self, package: str) -> bool: """Check if a package originated from a native location. Return True for a package which came from an origin which is listed in native-origins.d, False if it comes from a third-party source. """ pkg = self._apt_pkg(package) # some PPA packages have installed version None, see LP#252734 if pkg.installed and pkg.installed.version is None: return False native_origins = [] for f in glob.glob("/etc/apport/native-origins.d/*"): try: with open(f, encoding="utf-8") as fd: for line in fd: line = line.strip() if line: native_origins.append(line) except OSError: pass if pkg.candidate and pkg.candidate.origins: # might be None for o in pkg.candidate.origins: if o.origin in native_origins: return True return False @staticmethod def get_lp_binary_package(release, package, version, arch): """Get Launchpad URL and SHA1 sum for the given binary package version.""" # allow unauthenticated downloads apt.apt_pkg.config.set("APT::Get::AllowUnauthenticated", "True") # pylint: disable=import-outside-toplevel from launchpadlib.launchpad import Launchpad launchpad = Launchpad.login_anonymously( "apport-retrace", "production", version="devel" ) ubuntu = launchpad.distributions["ubuntu"] series = ubuntu.getSeries(name_or_version=release.split()[-1]) das = series.getDistroArchSeries(archtag=arch) primary = ubuntu.getArchive(name="primary") bpph = primary.getPublishedBinaries( binary_name=package, version=version, distro_arch_series=das, ordered=False, exact_match=True, ) if not bpph: return (None, None) bf_urls = "" for bp in bpph: if bp.status == "Deleted": continue if not bp.architecture_specific: # include_meta is required to get the sha1 bf_urls = bp.binaryFileUrls(include_meta=True) break if bp.distro_arch_series_link.endswith(arch): bf_urls = bp.binaryFileUrls(include_meta=True) break if not bf_urls: return (None, None) for bf in bf_urls: # return the first binary file url since there being more than one # is theoretical return (bf["url"], bf["sha1"]) @staticmethod def json_request(url, entries=False): """Open, read and parse the JSON of a URL. Set entries to True when the json data returned by Launchpad has a dictionary with an entries key which contains the data desired. """ try: with urllib.request.urlopen(url) as response: content = response.read() except (urllib.error.URLError, urllib.error.HTTPError): apport.logging.warning("cannot connect to: %s", urllib.parse.unquote(url)) return None except OSError: apport.logging.warning( "failure reading data at: %s", urllib.parse.unquote(url) ) return None if isinstance(content, bytes): content = content.decode("utf-8") if entries: return json.loads(content)["entries"] return json.loads(content) @staticmethod def get_lp_source_package(package, version): """Get files from Launchpad for the given source package version.""" # pylint: disable=import-outside-toplevel from launchpadlib.launchpad import Launchpad launchpad = Launchpad.login_anonymously( "apport-retrace", "production", version="devel" ) ubuntu = launchpad.distributions["ubuntu"] primary = ubuntu.getArchive(name="primary") pss = primary.getPublishedSources( source_name=package, version=version, exact_match=True ) if not pss: return None sfus = "" for ps in pss: if ps.status == "Deleted": continue sfus = ps.sourceFileUrls() # use the first entry as they are sorted chronologically break if not sfus: return None source_files = [] for sfu in sfus: source_files.append(sfu) return source_files def get_architecture(self, package: str) -> str: """Return the architecture of a package. This might differ on multiarch architectures (e. g. an i386 Firefox package on a x86_64 system) """ if self._apt_pkg(package).installed: return self._apt_pkg(package).installed.architecture or "unknown" if self._apt_pkg(package).candidate: return self._apt_pkg(package).candidate.architecture or "unknown" raise ValueError(f"package {package} does not exist") def get_files(self, package): """Return list of files shipped by a package.""" output = self._call_dpkg(["-L", package]) if output is None: return None return [f for f in output.splitlines() if not f.startswith("diverted")] def get_modified_files(self, package: str) -> list[str]: """Return list of all modified files of a package.""" # get the maximum mtime of package files that we consider unmodified listfile = f"/var/lib/dpkg/info/{package}:{self.get_system_architecture()}.list" if not os.path.exists(listfile): listfile = f"/var/lib/dpkg/info/{package}.list" try: s = os.stat(listfile) if not stat.S_ISREG(s.st_mode): raise OSError max_time = max(s.st_mtime, s.st_ctime) except OSError: return [] # create a list of files with a newer timestamp for md5sum'ing sums = b"" sumfile = ( f"/var/lib/dpkg/info/{package}:{self.get_system_architecture()}.md5sums" ) if not os.path.exists(sumfile): sumfile = f"/var/lib/dpkg/info/{package}.md5sums" if not os.path.exists(sumfile): # some packages do not ship md5sums return [] with open(sumfile, "rb") as fd: for line in fd: try: # ignore lines with NUL bytes (happens, LP#96050) if b"\0" in line: apport.logging.warning( "%s contains NUL character, ignoring line", sumfile ) continue words = line.split() if not words: apport.logging.warning( "%s contains empty line, ignoring line", sumfile ) continue s = os.stat(f"/{words[-1].decode('UTF-8')}".encode("UTF-8")) if max(s.st_mtime, s.st_ctime) <= max_time: continue except OSError: pass sums += line if sums: return self._check_files_md5(sums) return [] def get_modified_conffiles(self, package): """Return modified configuration files of a package. Return a file name -> file contents map of all configuration files of package. Please note that apport.hookutils.attach_conffiles() is the official user-facing API for this, which will ask for confirmation and allows filtering. """ dpkg = subprocess.run( ["dpkg-query", "-W", "--showformat=${Conffiles}", "--", package], check=False, stdout=subprocess.PIPE, ) if dpkg.returncode != 0: return {} modified = {} for line in dpkg.stdout.decode().splitlines(): if not line: continue # just take the first two fields, to not stumble over obsolete # conffiles path, default_md5sum = line.strip().split()[:2] if os.path.exists(path): try: with open(path, "rb") as fd: contents = fd.read() m = hashlib.md5() m.update(contents) calculated_md5sum = m.hexdigest() if calculated_md5sum != default_md5sum: modified[path] = contents except OSError as error: modified[path] = f"[inaccessible: {str(error)}]" else: modified[path] = "[deleted]" return modified @staticmethod def __fgrep_files(pattern, file_list): """Call fgrep for a pattern on given file list and return the first matching file, or None if no file matches.""" match = None slice_size = 100 i = 0 while not match and i < len(file_list): fgrep = subprocess.run( ["fgrep", "-lxm", "1", "--", pattern] + file_list[i : (i + slice_size)], check=False, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, ) if fgrep.returncode == 0: match = fgrep.stdout.decode("UTF-8") i += slice_size return match def __fgrep_list_for_path( self, path: str, likely_lists: list[str], all_lists: list[str] ) -> str | None: # first check the likely packages match = self.__fgrep_files(path, likely_lists) if not match: match = self.__fgrep_files(path, all_lists) if not match: usrmerge_path = _usr_merge_alternative(path) if usrmerge_path: match = self.__fgrep_files(usrmerge_path, likely_lists) if not match: match = self.__fgrep_files(usrmerge_path, all_lists) return match def get_file_package( self, file: str, uninstalled: bool = False, map_cachedir: str | None = None, release: str | None = None, arch: str | None = None, ) -> str | None: """Return the package a file belongs to. Return None if the file is not shipped by any package. If uninstalled is True, this will also find files of uninstalled packages; this is very expensive, though, and needs network access and lots of CPU and I/O resources. In this case, map_cachedir can be set to an existing directory which will be used to permanently store the downloaded maps. If it is not set, a temporary directory will be used. Also, release and arch can be set to a foreign release/architecture instead of the one from the current system. """ if uninstalled: return self._search_contents(file, map_cachedir, release, arch) # check if the file is a diversion dpkg = subprocess.run( ["dpkg-divert", "--list", file], check=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE, ) out = dpkg.stdout.decode("UTF-8") if dpkg.returncode == 0 and out: pkg = out.split()[-1] if pkg != "hardening-wrapper": return pkg fname = os.path.splitext(os.path.basename(file))[0].lower() all_lists = [] likely_lists = [] for f in glob.glob("/var/lib/dpkg/info/*.list"): p = os.path.splitext(os.path.basename(f))[0].lower().split(":")[0] if p in fname or fname in p: likely_lists.append(f) else: all_lists.append(f) match = self.__fgrep_list_for_path(file, likely_lists, all_lists) if match: return os.path.splitext(os.path.basename(match))[0].split(":")[0] return None @staticmethod @functools.cache def get_system_architecture() -> str: """Return the architecture of the system, in the notation used by the particular distribution.""" dpkg = subprocess.run( ["dpkg", "--print-architecture"], check=True, stdout=subprocess.PIPE ) arch = dpkg.stdout.decode().strip() assert arch return arch @staticmethod @functools.cache def get_native_multiarch_triplet() -> str: """Return the multiarch triplet for the system architecture""" dpkg = subprocess.run( ["dpkg-architecture", "-qDEB_HOST_MULTIARCH"], check=True, text=True, stdout=subprocess.PIPE, ) return dpkg.stdout.strip() def get_library_paths(self) -> str: """Return a list of default library search paths. The entries should be separated with a colon ':', like for $LD_LIBRARY_PATH. This needs to take any multiarch directories into account. """ return f"/lib/{self.get_native_multiarch_triplet()}:/lib" def set_mirror(self, url: str) -> None: """Explicitly set a distribution mirror URL for operations that need to fetch distribution files/packages from the network. By default, the mirror will be read from the system configuration files. """ self._mirror = url # purge our contents dir cache try: if self._contents_dir: shutil.rmtree(self._contents_dir) self._contents_dir = None except AttributeError: pass def get_source_tree(self, srcpackage, output_dir, version=None, sandbox=None): # TODO: Split into smaller functions/methods # pylint: disable=too-many-branches,too-many-locals """Download source package and unpack it into output_dir. This also has to care about applying patches etc., so that output_dir will eventually contain the actually compiled source. output_dir needs to exist and should be empty. If version is given, this particular version will be retrieved. Otherwise this will fetch the latest available version. If sandbox is given, it calls apt-get source in that sandbox, otherwise it uses the system apt configuration. If apt_update is True, it will call apt-get update before apt-get source. This is mostly necessary for freshly created sandboxes. Return the directory that contains the actual source root directory (which might be a subdirectory of output_dir). Return None if the source is not available. """ # configure apt for sandbox env = os.environ.copy() if sandbox: # hard to change, pylint: disable=consider-using-with f = tempfile.NamedTemporaryFile("w+") f.write( f'Dir "{sandbox}";\n' f'Dir::State::Status "/var/lib/dpkg/status";\n' f'Debug::NoLocking "true";\n' ) f.flush() env["APT_CONFIG"] = f.name if sandbox and not glob.glob(f"{sandbox}/var/lib/apt/lists/*Sources"): subprocess.call(["apt-get", "-qq", "update"], env=env) # fetch source tree argv = ["apt-get", "-qq", "--assume-yes", "source", srcpackage] if version: argv[-1] += f"={version}" try: if subprocess.call(argv, cwd=output_dir, env=env) != 0: if not version: return None sf_urls = self.get_lp_source_package(srcpackage, version) if sf_urls: proxy = "" if apt.apt_pkg.config.find("Acquire::http::Proxy") != "": proxy = apt.apt_pkg.config.find("Acquire::http::Proxy") apt.apt_pkg.config.set("Acquire::http::Proxy", "") fetchProgress = apt.progress.base.AcquireProgress() fetcher = apt.apt_pkg.Acquire(fetchProgress) af_queue = [] for sf in sf_urls: af_queue.append( apt.apt_pkg.AcquireFile(fetcher, sf, destdir=output_dir) ) result = fetcher.run() if result != fetcher.RESULT_CONTINUE: return None if proxy: apt.apt_pkg.config.set("Acquire::http::Proxy", proxy) for dsc in glob.glob(os.path.join(output_dir, "*.dsc")): subprocess.call( ["dpkg-source", "-sn", "-x", dsc], stdout=subprocess.PIPE, cwd=output_dir, ) else: return None except OSError: return None # find top level directory root = None for d in glob.glob(os.path.join(output_dir, f"{srcpackage}-*")): if os.path.isdir(d): root = d assert root, "could not determine source tree root directory" # apply patches on a best-effort basis try: subprocess.call( "(debian/rules patch || debian/rules apply-patches " "|| debian/rules apply-dpatches || " "debian/rules unpack || debian/rules patch-stamp || " "debian/rules setup) >/dev/null 2>&1", shell=True, cwd=root, ) except OSError: pass return root def get_kernel_package(self) -> str: """Return the actual Linux kernel package name. This is used when the user reports a bug against the "linux" package. """ # TODO: Ubuntu specific return f"linux-image-{os.uname()[2]}" def _apt_cache_root_dir( self, architecture: str, cache_dir: pathlib.Path | str, release: str ) -> str: """Determine APT cache root directory. release is the value of the report's 'DistroRelease' field or "system" in case the current system configuration should be used. """ if architecture != self.get_system_architecture(): aptroot_arch = architecture else: aptroot_arch = "" return os.path.join(cache_dir, release, aptroot_arch, "apt") # pylint: disable-next=too-many-arguments def _remove_conflicting_packages( self, package: str, aptroot: str, apt_cache: apt.Cache, candidate: apt.package.Version, archivedir: str, pkg_versions: dict[str, str], ) -> None: # TODO: Split into smaller functions/methods # pylint: disable=too-many-branches,too-many-locals virtual_mapping = self._virtual_mapping(aptroot) # Remember all the virtual packages that this package provides, # so that if we encounter that virtual package as a # Conflicts/Replaces later, we know to remove this package from # the cache. for p in candidate.provides: virtual_mapping.setdefault(p, set()).add(package) conflicts = [] if "Conflicts" in candidate.record: conflicts += apt.apt_pkg.parse_depends(candidate.record["Conflicts"]) if "Replaces" in candidate.record: conflicts += apt.apt_pkg.parse_depends(candidate.record["Replaces"]) for conflict in conflicts: # if the package conflicts with itself its wonky e.g. # gdb in artful if conflict[0][0] == candidate.package.name: continue # apt_pkg.parse_depends needs to handle the or operator, # but as policy states it is invalid to use that in # Replaces/Depends, we can safely choose the first value # here. conflict_pkg, conflict_ver, conflict_comptype = conflict[0] if apt_cache.is_virtual_package(conflict_pkg): try: providers = virtual_mapping[conflict_pkg] except KeyError: # We may not have seen the virtual package that # this conflicts with, so we can assume it's not # unpacked into the sandbox. continue for p in providers: # if the candidate package being installed # conflicts with but also provides a virtual # package don't act on the candidate e.g. # libpam-modules and libpam-mkhomedir in artful if p == candidate.package.name: continue debs = os.path.join(archivedir, f"{p}_*.deb") for path in glob.glob(debs): ver = self._deb_version(path) if apt.apt_pkg.check_dep(ver, conflict_comptype, conflict_ver): os.unlink(path) try: del pkg_versions[p] except KeyError: pass del providers else: debs = os.path.join(archivedir, f"{conflict_pkg}_*.deb") for path in glob.glob(debs): ver = self._deb_version(path) if apt.apt_pkg.check_dep(ver, conflict_comptype, conflict_ver): os.unlink(path) try: del pkg_versions[conflict_pkg] except KeyError: pass # pylint: disable-next=too-many-arguments def install_packages( self, rootdir: str, configdir: str | None, release: str, packages: list[tuple[str, str | None]], verbose: bool = False, cache_dir: str | None = None, permanent_rootdir: bool = False, architecture: str | None = None, origins: Iterable[str] | None = None, install_dbg: bool = True, install_deps: bool = False, ) -> str: # TODO: Split into smaller functions/methods # pylint: disable=too-many-branches,too-many-locals # pylint: disable=too-many-nested-blocks,too-many-statements """Install packages into a sandbox (for apport-retrace). In order to work without any special permissions and without touching the running system, this should only download and unpack packages into the given root directory, not install them into the system. configdir points to a directory with by-release configuration files for the packaging system; this is completely dependent on the backend implementation, the only assumption is that this looks into configdir/release/, so that you can use retracing for multiple DistroReleases. As a special case, if configdir is None, it uses the current system configuration, and "release" is ignored. release is the value of the report's 'DistroRelease' field. packages is a list of ('packagename', 'version') tuples. If the version is None, it should install the most current available version. If cache_dir is given, then the downloaded packages will be stored there, to speed up subsequent retraces. If permanent_rootdir is True, then the sandbox created from the downloaded packages will be reused, to speed up subsequent retraces. If architecture is given, the sandbox will be created with packages of the given architecture (as specified in a report's "Architecture" field). If not given it defaults to the host system's architecture. If origins is given, the sandbox will be created with apt data sources for foreign origins. If install_deps is True, then the dependencies of packages will also be installed. Return a string with outdated packages, or an empty string if all packages were installed. If something is wrong with the environment (invalid configuration, package servers down, etc.), this should raise a SystemError with a meaningful error message. """ if not architecture: architecture = self.get_system_architecture() if not configdir: apt_dir = "/etc/apt" self._current_release_codename = self.get_distro_codename() else: # support architecture specific config, fall back to global config apt_dir = os.path.join(configdir, release) if architecture != self.get_system_architecture(): arch_apt_dir = os.path.join(configdir, release, architecture) arch_old_sources = os.path.join(arch_apt_dir, "sources.list") arch_sources_dir = os.path.join(arch_apt_dir, "sources.list.d") if os.path.exists(arch_old_sources) or ( os.path.exists(arch_sources_dir) and os.listdir(arch_sources_dir) ): apt_dir = arch_apt_dir # set mirror for get_file_package() try: self.set_mirror(self._get_primary_mirror_from_apt_sources(apt_dir)) except SystemError as error: apport.logging.warning("cannot determine mirror: %s", str(error)) # set current release code name for _distro_release_to_codename with open( os.path.join(configdir, release, "codename"), encoding="utf-8" ) as f: self._current_release_codename = f.read().strip() # create apt sandbox if cache_dir: tmp_aptroot = False aptroot = self._apt_cache_root_dir( architecture, cache_dir, release if configdir else "system" ) if not os.path.isdir(aptroot): os.makedirs(aptroot) else: tmp_aptroot = True aptroot = tempfile.mkdtemp() apt.apt_pkg.config.set("APT::Architecture", architecture) apt.apt_pkg.config.set("Acquire::Languages", "none") # directly connect to Launchpad when downloading deb files apt.apt_pkg.config.set("Acquire::http::Proxy::api.launchpad.net", "DIRECT") apt.apt_pkg.config.set("Acquire::http::Proxy::launchpad.net", "DIRECT") if not verbose: fetchProgress = apt.progress.base.AcquireProgress() else: fetchProgress = apt.progress.text.AcquireProgress() if not tmp_aptroot: apt_cache = self._sandbox_cache( aptroot, apt_dir, fetchProgress, self.get_distro_name(), self._current_release_codename, origins, architecture, ) else: self._build_apt_sandbox( aptroot, apt_dir, self.get_distro_name(), self._current_release_codename, origins, ) apt_cache = apt.Cache(rootdir=os.path.abspath(aptroot)) try: apt_cache.update(fetchProgress) except apt.cache.FetchFailedException as error: raise SystemError(str(error)) from error apt_cache.open() archivedir = apt.apt_pkg.config.find_dir("Dir::Cache::archives") obsolete = "" src_records = apt.apt_pkg.SourceRecords() # read original package list pkg_list = os.path.join(rootdir, "packages.txt") pkg_versions = {} if os.path.exists(pkg_list): with open(pkg_list, encoding="utf-8") as f: for line in f: line = line.strip() if not line: continue (p, v) = line.split() pkg_versions[p] = v # mark packages for installation real_pkgs = set() lp_cache = {} fetcher = apt.apt_pkg.Acquire(fetchProgress) # need to keep AcquireFile references acquire_queue = [] # add any dependencies to the packages list if install_deps: deps = [] for pkg, ver in packages: try: cache_pkg = apt_cache[pkg] except KeyError: m = f"package {pkg.replace('%', '%%')} does not exist, ignoring" obsolete += f"{m}\n" apport.logging.warning("%s", m) continue for dep in cache_pkg.candidate.dependencies: # the dependency may be satisfied by a different package if dep[0].name not in apt_cache: dep[0] = apt_cache.get_providing_packages(dep[0].name)[0] # the version in dep is the one from pkg's dependencies, # so use the version from the cache dep_pkg_vers = apt_cache[dep[0].name].candidate.version # if the dependency is in the list of packages we don't # need to look up its dependencies again if dep[0].name in [pkg[0] for pkg in packages]: continue # if the package is already extracted in the sandbox # because the report needs that package we don't want to # install a newer version which may cause a CRC mismatch # with the installed dbg symbols if dep[0].name in pkg_versions: inst_version = pkg_versions[dep[0].name] if self.compare_versions(inst_version, dep_pkg_vers) > -1: deps.append((dep[0].name, inst_version)) else: deps.append((dep[0].name, dep_pkg_vers)) else: deps.append((dep[0].name, dep_pkg_vers)) if dep[0].name not in [pkg[0] for pkg in packages]: packages.append((dep[0].name, None)) packages.extend(deps) for pkg, ver in packages: try: cache_pkg = apt_cache[pkg] except KeyError: m = f"package {pkg.replace('%', '%%')} does not exist, ignoring" obsolete += f"{m}\n" apport.logging.warning("%s", m) continue # try to select matching version try: if ver: cache_pkg.candidate = cache_pkg.versions[ver] except KeyError: (lp_url, sha1sum) = self.get_lp_binary_package( release, pkg, ver, architecture ) if lp_url: acquire_queue.append( apt.apt_pkg.AcquireFile( fetcher, lp_url, hash=f"sha1:{sha1sum}", destdir=archivedir ) ) lp_cache[pkg] = ver else: obsolete += ( f"{pkg} version {ver} required," f" but {cache_pkg.candidate.version} is available\n" ) ver = cache_pkg.candidate.version candidate = cache_pkg.candidate real_pkgs.add(pkg) if permanent_rootdir: self._remove_conflicting_packages( pkg, aptroot, apt_cache, candidate, archivedir, pkg_versions ) if candidate.architecture != "all" and install_dbg: try: dbg_pkg = f"{pkg}-dbg" dbg = apt_cache[dbg_pkg] pkg_found = False # try to get the same version as pkg if ver: try: dbg.candidate = dbg.versions[ver] pkg_found = True except KeyError: (lp_url, sha1sum) = self.get_lp_binary_package( release, dbg_pkg, ver, architecture ) if lp_url: acquire_queue.append( apt.apt_pkg.AcquireFile( fetcher, lp_url, hash=f"sha1:{sha1sum}", destdir=archivedir, ) ) lp_cache[dbg_pkg] = ver pkg_found = True # if it can't be found in Launchpad failover to a # code path that'll use -dbgsym packages else: raise if not pkg_found: try: dbg.candidate = dbg.versions[candidate.version] except KeyError: obsolete += ( f"outdated -dbg package for {pkg}:" f" package version {ver}" f" -dbg version {dbg.candidate.version}\n" ) real_pkgs.add(dbg_pkg) except KeyError: # install all -dbg from the source package; lookup() just # works from the current list pointer, we always need to # start from the beginning src_records.restart() if src_records.lookup(candidate.source_name): # ignore transitional packages # False positive, see # https://github.com/PyCQA/pylint/issues/7122 # pylint: disable=not-an-iterable dbgs = [ p for p in src_records.binaries if p.endswith("-dbg") and p in apt_cache and "transitional" not in apt_cache[p].candidate.description ] # if a specific version of a package was requested # only install dbg pkgs whose version matches if ver: for dbg in dbgs: if apt_cache[dbg].candidate.version != ver: dbgs.remove(dbg) else: dbgs = [] if dbgs: for p in dbgs: # if the package has already been added to # real_pkgs don't search for it again if p in real_pkgs: continue pkg_found = False # prefer the version requested if ver: try: apt_cache[p].candidate = apt_cache[p].versions[ver] pkg_found = True except KeyError: (lp_url, sha1sum) = self.get_lp_binary_package( release, p, ver, architecture ) if lp_url: acquire_queue.append( apt.apt_pkg.AcquireFile( fetcher, lp_url, hash=f"sha1:{sha1sum}", destdir=archivedir, ) ) lp_cache[p] = ver pkg_found = True if not pkg_found: try: apt_cache[p].candidate = apt_cache[p].versions[ candidate.version ] except KeyError: # we don't really expect that, but it's # possible that other binaries have a # different version pass real_pkgs.add(p) else: pkg_found = False dbgsym_pkg = f"{pkg}-dbgsym" try: dbgsym = apt_cache[dbgsym_pkg] real_pkgs.add(dbgsym_pkg) # prefer the version requested if ver: try: dbgsym.candidate = dbgsym.versions[ver] pkg_found = True except KeyError: (lp_url, sha1sum) = self.get_lp_binary_package( release, dbgsym_pkg, ver, architecture ) if lp_url: acquire_queue.append( apt.apt_pkg.AcquireFile( fetcher, lp_url, hash=f"sha1:{sha1sum}", destdir=archivedir, ) ) lp_cache[dbgsym_pkg] = ver pkg_found = True if not pkg_found: try: dbgsym.candidate = dbgsym.versions[ candidate.version ] except KeyError: obsolete += ( f"outdated debug symbol package" f" for {pkg}: package version" f" {candidate.version}" f" dbgsym version" f" {dbgsym.candidate.version}\n" ) except KeyError: if ver: (lp_url, sha1sum) = self.get_lp_binary_package( release, dbgsym_pkg, ver, architecture ) if lp_url: acquire_queue.append( apt.apt_pkg.AcquireFile( fetcher, lp_url, hash=f"sha1:{sha1sum}", destdir=archivedir, ) ) lp_cache[dbgsym_pkg] = ver pkg_found = True if not pkg_found: obsolete += f"no debug symbol package found for {pkg}\n" # unpack packages, weed out the ones that are already installed (for # permanent sandboxes) logger = logging.getLogger(__name__) requested_pkgs = dict(packages) for p in real_pkgs.copy(): if p in requested_pkgs: if requested_pkgs[p] is None: # We already have the latest version of this package if pkg_versions.get(p) == apt_cache[p].candidate.version: logger.debug( "Removing %s which is already the right version", p ) real_pkgs.remove(p) else: logger.debug( "Installing %s version %s", p, apt_cache[p].candidate.version, ) apt_cache[p].mark_install(False, False) elif pkg_versions.get(p) != requested_pkgs[p]: logger.debug( "Installing %s version %s", p, apt_cache[p].candidate.version ) apt_cache[p].mark_install(False, False) elif pkg_versions.get(p) != apt_cache[p].candidate.version: logger.debug( "Installing %s version %s", p, apt_cache[p].candidate.version ) apt_cache[p].mark_install(False, False) else: logger.debug("Removing %s which is already the right version", p) real_pkgs.remove(p) elif pkg_versions.get(p) != apt_cache[p].candidate.version: logger.debug("Installing %s", p) apt_cache[p].mark_install(False, False) else: logger.debug("Removing %s which is already the right version", p) real_pkgs.remove(p) last_written = time.time() # fetch packages try: apt_cache.fetch_archives(fetcher=fetcher) except apt.cache.FetchFailedException as error: apport.logging.error( "Package download error, try again later: %s", str(error) ) sys.exit(1) # transient error if verbose: print("Extracting downloaded debs...") # False positive, see https://github.com/PyCQA/pylint/issues/7122 for i in fetcher.items: # pylint: disable=not-an-iterable if not i.destfile.endswith("deb"): continue out = subprocess.check_output(["dpkg-deb", "--show", i.destfile]).decode() (p, v) = out.strip().split() if ( not permanent_rootdir or p not in pkg_versions or os.path.getctime(i.destfile) > last_written ): # don't extract the same version of the package if it is # already extracted if pkg_versions.get(p) == v: pass # don't extract the package if it is a different version than # the one we want to extract from Launchpad elif p in lp_cache and lp_cache[p] != v: pass else: subprocess.check_call(["dpkg", "-x", i.destfile, rootdir]) pkg_versions[p] = v pkg_name = os.path.basename(i.destfile).split("_", 1)[0] # because a package may exist multiple times in the fetcher it may # have already been removed if pkg_name in real_pkgs: real_pkgs.remove(pkg_name) # update package list pkgs = list(pkg_versions.keys()) pkgs.sort() with open(pkg_list, "w", encoding="utf-8") as f: for p in pkgs: f.write(p) f.write(" ") f.write(pkg_versions[p]) f.write("\n") if tmp_aptroot: shutil.rmtree(aptroot) # check bookkeeping that apt fetcher really got everything assert ( not real_pkgs ), f"apt fetcher did not fetch these packages: {' '.join(real_pkgs)}" if permanent_rootdir: self._save_virtual_mapping(aptroot) return obsolete def package_name_glob(self, nameglob): """Return known package names which match given glob.""" return glob.fnmatch.filter(self._cache().keys(), nameglob) # # Internal helper methods # @staticmethod def _call_dpkg(args: list[str]) -> str: """Call dpkg with given arguments and return output, or return None on error.""" dpkg = subprocess.run( ["dpkg"] + args, check=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE ) if dpkg.returncode == 0: return dpkg.stdout.decode("UTF-8") raise ValueError("package does not exist") @staticmethod def _check_files_md5(sumfile: bytes) -> list[str]: """Call md5sum. This is separate from get_modified_files so that it is automatically testable. """ env: dict[str, str] = {} md5sum = subprocess.run( ["/usr/bin/md5sum", "-c"], check=False, input=sumfile, stdout=subprocess.PIPE, stderr=subprocess.PIPE, cwd="/", env=env, ) # if md5sum succeeded, don't bother parsing the output if md5sum.returncode == 0: return [] out = md5sum.stdout.decode("UTF-8", errors="replace") mismatches = [] for line in out.splitlines(): if line.endswith("FAILED"): mismatches.append(line.rsplit(":", 1)[0]) return mismatches @staticmethod def _get_primary_mirror_from_apt_sources(apt_dir: str) -> str: """Heuristically determine primary mirror from an apt sources.list.""" uri = None sources = _load_all_sources(apt_dir) for source in sources: if source.disabled or source.invalid: continue # TODO: remove the typeched branch once python-apt commit # bdcb2550cb6f623f4556bf6581a040642f29dd28 is available # in a proper release if isinstance(source, SourceEntry): if source.type == "deb": uri = source.uri or "" elif "deb" in source.types: uri = source.uris[0] if uri is not None: if uri.startswith("mirror+file:"): mirrors = _read_mirror_file(uri) assert mirrors return mirrors[0] return uri raise SystemError( "cannot determine default mirror:" f" couldn't find configured source contains the `deb` type in {apt_dir}" ) def _get_mirror(self, arch: str) -> str: """Return the distribution mirror URL. If it has not been set yet, it will be read from the system configuration. """ if not self._mirror: self._mirror = self._get_primary_mirror_from_apt_sources("/etc/apt") return _map_mirror_to_arch(self._mirror, arch) def _ppa_archive_url(self, user: str, distro: str, ppa_name: str) -> str: return f"{self._launchpad_base}/~{user}/+archive/{distro}/{ppa_name}" def _distro_release_to_codename(self, release: str) -> str: """Map a DistroRelease: field value to a release code name.""" # if we called install_packages() with a configdir, we can read the # codename from there if self._current_release_codename is not None: return self._current_release_codename raise NotImplementedError( f"Cannot map DistroRelease '{release}' to a code name" " without install_packages()" ) def _fetch_contents_file( self, contents_filename: str, mtime: float | None, dist: str, arch: str ) -> bool: update = False url = f"{self._get_mirror(arch)}/dists/{dist}/Contents-{arch}.gz" if mtime: # HTTPConnection requires server name e.g. # archive.ubuntu.com server = urllib.parse.urlparse(url)[1] conn = http.client.HTTPConnection(server) conn.request("HEAD", urllib.parse.urlparse(url)[2]) res = conn.getresponse() modified_str = res.getheader("last-modified", None) if modified_str: modified = datetime.datetime.strptime( modified_str, "%a, %d %b %Y %H:%M:%S %Z" ) update = modified > datetime.datetime.fromtimestamp(mtime) else: update = True # don't update the file if it is empty if res.getheader("content-length", None) == "40": update = False else: update = True if update: self._contents_update = True try: # hard to change, pylint: disable=consider-using-with src = urllib.request.urlopen(url) except OSError: # we ignore non-existing pockets, but we do crash # if the release pocket doesn't exist if "-" not in dist: raise return False with open(contents_filename, "wb") as f: while True: data = src.read(1000000) if not data: break f.write(data) src.close() assert os.path.exists(contents_filename) return True def _get_contents_file(self, map_cachedir: str, dist: str, arch: str) -> str | None: contents_filename = os.path.join(map_cachedir, f"{dist}-Contents-{arch}.gz") # check if map exists and is younger than a day; if not, we need # to refresh it try: mtime = os.stat(contents_filename).st_mtime age = int(time.time() - mtime) except OSError: mtime = None age = None if age is None or age >= 86400: if not self._fetch_contents_file(contents_filename, mtime, dist, arch): return None return contents_filename @staticmethod def _update_given_file2pkg_mapping( file2pkg: dict[bytes, bytes], contents_filename: str, dist: str ) -> None: path_exclude_pattern = re.compile( rb"^:|(boot|var|usr/(include|src|[^/]+/include" rb"|share/(doc|gocode|help|icons|locale|man|texlive)))/" ) with gzip.open(contents_filename, "rb") as contents: if dist in {"trusty", "xenial"}: # the first 32 lines are descriptive only for these # releases for _ in range(32): next(contents) for line in contents: if path_exclude_pattern.match(line): continue path, column2 = line.rsplit(maxsplit=1) package = column2.split(b",")[0].split(b"/")[-1] if path in file2pkg: if package == file2pkg[path]: continue # if the package was updated use the update # b/c everyone should have packages from # -updates and -security installed file2pkg[path] = package def _get_file2pkg_mapping( self, map_cachedir: str, release: str, arch: str ) -> dict[bytes, bytes]: # this is ordered by likelihood of installation with the most common # last # XXX - maybe we shouldn't check -security and -updates if it is the # devel release as they will be old and empty for pocket in ("-proposed", "", "-security", "-updates"): dist = f"{release}{pocket}" contents_filename = self._get_contents_file(map_cachedir, dist, arch) if contents_filename is None: continue file2pkg = self._contents_mapping(map_cachedir, release, arch) # if the mapping is empty build it if not file2pkg or len(file2pkg) == 2: self._contents_update = True # if any of the Contents files were updated we need to update the # map because the ordering in which is created is important if self._contents_update: self._update_given_file2pkg_mapping(file2pkg, contents_filename, dist) return file2pkg def _search_contents( self, file: str, map_cachedir: str | None, release: str | None, arch: str | None ) -> str | None: """Search file in Contents.gz.""" if not map_cachedir: if not self._contents_dir: self._contents_dir = tempfile.mkdtemp() map_cachedir = self._contents_dir if arch is None: arch = self.get_system_architecture() if release is None: release = self.get_distro_codename() else: release = self._distro_release_to_codename(release) contents_mapping = self._get_file2pkg_mapping(map_cachedir, release, arch) # the file only needs to be saved after an update if self._contents_update: self._save_contents_mapping(map_cachedir, release, arch) # the update of the mapping only needs to be done once self._contents_update = False if file[0] != "/": file = f"/{file}" files = [file[1:].encode()] usrmerge_file = _usr_merge_alternative(file) if usrmerge_file: files.append(usrmerge_file[1:].encode()) for filename in files: try: pkg = contents_mapping[filename].decode() return pkg except KeyError: pass return None def _analyze_ppa_origin_string( self, origin: str, distro: str ) -> tuple[str, str] | None: if not origin.startswith("LP-PPA-"): return None components = origin.split("-")[2:] # If the PPA is unnamed, it will not appear in origin information # but is named ppa in Launchpad. try_ppa = True if len(components) == 1: components.append("ppa") try_ppa = False index = 1 while index < len(components): # For an origin we can't tell where the user name ends and the # PPA name starts, so split on each "-" until we find a PPA # that exists. user = str.join("-", components[:index]) ppa_name = str.join("-", components[index:]) try: with contextlib.closing( urllib.request.urlopen( self._ppa_archive_url( user=user, distro=distro, ppa_name=ppa_name ) ) ) as response: response.read() return user, ppa_name except (urllib.error.URLError, urllib.error.HTTPError): index += 1 if index == len(components): if try_ppa: components.append("ppa") try_ppa = False index = 2 return None # pylint: disable-next=no-member def create_ppa_source_from_origin( self, origin: str, distro: str, release_codename: str ) -> list[apt_sl.Deb822SourceEntry | SourceEntry] | None: """For an origin from a Launchpad PPA create sources.list content. distro is the distribution for which content is being created e.g. ubuntu. release_codename is the codename of the release for which content is being created e.g. trusty. Returns None if the origin is not a Launchpad PPA, a list of source entry objects otherwise.""" ppa_data = self._analyze_ppa_origin_string(origin, distro) if not ppa_data: return None user, ppa_name = ppa_data debug_url = ( f"http://ppa.launchpad.net/{user}/{ppa_name}/{distro}" f"/dists/{release_codename}/main/debug" ) if WITH_DEB822_SUPPORT: main_entry = apt_sl.Deb822SourceEntry(None, "") main_entry.uris = [f"http://ppa.launchpad.net/{user}/{ppa_name}/{distro}"] main_entry.types = ["deb", "deb-src"] main_entry.comps = ["main"] main_entry.suites = [release_codename] try: with contextlib.closing(urllib.request.urlopen(debug_url)) as response: response.read() debug_entry = apt_sl.Deb822SourceEntry(None, "") debug_entry.uris = [ f"http://ppa.launchpad.net/{user}/{ppa_name}/{distro}" ] debug_entry.types = ["deb"] debug_entry.comps = ["main/debug"] debug_entry.suites = [release_codename] return [main_entry, debug_entry] except (urllib.error.URLError, urllib.error.HTTPError): return [main_entry] else: ppa_line = ( f"deb http://ppa.launchpad.net/{user}/{ppa_name}/{distro}" f" {release_codename} main" ) try: with contextlib.closing(urllib.request.urlopen(debug_url)) as response: response.read() add_debug = " main/debug" except (urllib.error.URLError, urllib.error.HTTPError): add_debug = "" return [ SourceEntry(ppa_line + add_debug), SourceEntry(f"deb-src {ppa_line[4:]}"), ] @staticmethod def _find_source_file_from_origin(origin: str, src_list_d: str) -> str | None: """Find a possible source file matching the Origin field of a given package (i.e. a PPA)""" if os.path.isdir(src_list_d): # check to see if there is a sources.list file for the # origin, if there isn't try using a sources.list file # w/o LP-PPA- candidates = [os.path.join(src_list_d, f"{origin}.list")] if WITH_DEB822_SUPPORT: candidates[0:0] = [os.path.join(src_list_d, f"{origin}.source")] if "LP-PPA" in origin: stripped = origin.strip("LP-PPA-") if WITH_DEB822_SUPPORT: candidates.append(os.path.join(f"{stripped}.source")) candidates.append(os.path.join(f"{stripped}.list")) for path in candidates: if os.path.exists(path): return path return None def _build_apt_sandbox( self, apt_root: str, apt_dir: str, distro_name: str, release_codename: str, origins: Iterable[str] | None, ) -> None: # TODO: Split into smaller functions/methods # pylint: disable=too-many-branches,too-many-locals,too-many-statements # pre-create directories, to avoid apt.Cache() printing "creating..." # messages on stdout if not os.path.exists(os.path.join(apt_root, "var", "lib", "apt")): os.makedirs(os.path.join(apt_root, "var", "lib", "apt", "lists", "partial")) os.makedirs( os.path.join(apt_root, "var", "cache", "apt", "archives", "partial") ) os.makedirs(os.path.join(apt_root, "var", "lib", "dpkg")) os.makedirs(os.path.join(apt_root, "etc", "apt", "apt.conf.d")) os.makedirs(os.path.join(apt_root, "etc", "apt", "preferences.d")) # install apt sources src_list_d = os.path.join(apt_dir, "sources.list.d") dst_list_d = os.path.join(apt_root, "etc", "apt", "sources.list.d") if os.path.exists(dst_list_d): shutil.rmtree(dst_list_d) if os.path.isdir(src_list_d): shutil.copytree(src_list_d, dst_list_d) else: os.makedirs(dst_list_d) old_sources = os.path.join(apt_dir, "sources.list") if os.path.exists(old_sources): with open(old_sources, encoding="utf-8") as src: with open( os.path.join(apt_root, "etc", "apt", "sources.list"), "w", encoding="utf-8", ) as dest: dest.write(src.read()) # install apt keyrings; prefer the ones from the config dir, fall back # to system trusted_gpg = os.path.join(apt_dir, "trusted.gpg") if os.path.exists(trusted_gpg): shutil.copy(trusted_gpg, os.path.join(apt_root, "etc", "apt")) elif os.path.exists("/etc/apt/trusted.gpg"): shutil.copy("/etc/apt/trusted.gpg", os.path.join(apt_root, "etc", "apt")) trusted_d = os.path.join(apt_root, "etc", "apt", "trusted.gpg.d") if os.path.exists(trusted_d): shutil.rmtree(trusted_d) if os.path.exists(f"{trusted_gpg}.d"): shutil.copytree(f"{trusted_gpg}.d", trusted_d) elif os.path.exists("/etc/apt/trusted.gpg.d"): shutil.copytree("/etc/apt/trusted.gpg.d", trusted_d) else: os.makedirs(trusted_d) if origins: # map an origin to a Launchpad username and PPA name origin_data = {} for origin in origins: # apport's report format uses unknown for packages w/o # an origin if origin == "unknown": continue origin_path = self._find_source_file_from_origin(origin, src_list_d) extension = ".sources" if not origin_path: source_list_content = self.create_ppa_source_from_origin( origin, distro_name, release_codename ) if not WITH_DEB822_SUPPORT: extension = ".list" elif origin_path.endswith(".list"): extension = ".list" with open(origin_path, encoding="utf-8") as src: source_list_content = [SourceEntry(line) for line in src] else: source_list_content = _parse_deb822_sources(origin_path) if source_list_content: with open( os.path.join( apt_root, "etc", "apt", "sources.list.d", origin + extension ), "a", encoding="utf-8", ) as dest: dest.write( "\n".join([f"{entry}\n" for entry in source_list_content]) ) for entry in source_list_content: if not entry.uri or "ppa.launchpad.net" not in entry.uri: continue user = entry.uri.split("/")[3] ppa = entry.uri.split("/")[4] origin_data[origin] = (user, ppa) else: apport.logging.warning( "Could not find or create source config for %s", origin ) # install apt keyrings for PPAs for origin, (ppa_user, ppa_name) in origin_data.items(): ppa_archive_url = self._ppa_archive_url( user=urllib.parse.quote(ppa_user), distro=distro_name, ppa_name=urllib.parse.quote(ppa_name), ) ppa_info = self.json_request(ppa_archive_url) if not ppa_info: continue try: signing_key_fingerprint = ppa_info["signing_key_fingerprint"] except IndexError: apport.logging.warning( "Error: can't find signing_key_fingerprint at %s", ppa_archive_url, ) continue argv = [ "apt-key", "--keyring", os.path.join(trusted_d, f"{origin}.gpg"), "adv", "--quiet", "--keyserver", "keyserver.ubuntu.com", "--recv-key", signing_key_fingerprint, ] if subprocess.call(argv) != 0: apport.logging.warning( "Unable to import key for %s", ppa_archive_url ) @staticmethod def _deb_version(pkg: str) -> str: """Return the version of a .deb file.""" dpkg = subprocess.run( ["dpkg-deb", "-f", pkg, "Version"], check=True, stdout=subprocess.PIPE ) out = dpkg.stdout.decode("UTF-8").strip() assert out return out def compare_versions(self, ver1: str, ver2: str) -> int: """Compare two package versions. Return -1 for ver < ver2, 0 for ver1 == ver2, and 1 for ver1 > ver2. """ return apt.apt_pkg.version_compare(ver1, ver2) _distro_codename = None def get_distro_codename(self) -> str: """Get "lsb_release -sc", cache the result.""" if self._distro_codename is None: try: info = platform.freedesktop_os_release() self._distro_codename = info["VERSION_CODENAME"] except (KeyError, OSError): # Fall back to query lsb_release lsb_release = subprocess.run( ["lsb_release", "-sc"], check=True, stdout=subprocess.PIPE, text=True, ) self._distro_codename = lsb_release.stdout.strip() return self._distro_codename _distro_name = None def get_distro_name(self) -> str: """Get osname from /etc/os-release, or if that doesn't exist, 'lsb_release -sir' output and cache the result.""" if self._distro_name is None: self._distro_name = self.get_os_version()[0].lower() if " " in self._distro_name: # concatenate distro name e.g. ubuntu-rtm self._distro_name = self._distro_name.replace(" ", "-") return self._distro_name impl = __AptDpkgPackageInfo()