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文件: /usr/lib/python3/dist-packages/apport/packaging_impl.py
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'''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. import subprocess, os, glob, stat, sys, tempfile, shutil, time import hashlib import json from contextlib import closing import warnings warnings.filterwarnings('ignore', 'apt API not stable yet', FutureWarning) import apt try: import cPickle as pickle from urllib import urlopen, quote, unquote (pickle, urlopen, quote, unquote) # pyflakes URLError = IOError HTTPError = IOError except ImportError: # python 3 from urllib.error import URLError, HTTPError from urllib.request import urlopen from urllib.parse import quote, unquote import pickle import apport from apport.packaging import PackageInfo class __AptDpkgPackageInfo(PackageInfo): '''Concrete apport.PackageInfo class implementation for python-apt and dpkg, as found on Debian and derivatives such as Ubuntu.''' def __init__(self): self._apt_cache = None self._sandbox_apt_cache = None self._sandbox_apt_cache_arch = None self._contents_dir = None self._mirror = None self._virtual_mapping_obj = None self._contents_mapping_obj = None self._launchpad_base = 'https://api.launchpad.net/devel' self._ppa_archive_url = self._launchpad_base + '/~%(user)s/+archive/%(distro)s/%(ppaname)s' self._contents_update = False def __del__(self): try: if self._contents_dir: shutil.rmtree(self._contents_dir) except AttributeError: pass def _virtual_mapping(self, configdir): 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): 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, 'contents_mapping-%s-%s.pickle' % (release, arch)) 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, 'contents_mapping-%s-%s.pickle' % (release, arch)) 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 _cache(self): '''Return apt.Cache() (initialized lazily).''' self._sandbox_apt_cache = None if not self._apt_cache: try: # avoid spewage on stdout progress = apt.progress.base.OpProgress() self._apt_cache = apt.Cache(progress, rootdir='/') except AttributeError: # older python-apt versions do not yet have above argument self._apt_cache = apt.Cache(rootdir='/') return self._apt_cache def _sandbox_cache(self, aptroot, apt_sources, fetchProgress, distro_name, release_codename, origins, arch): '''Build apt sandbox and return apt.Cache(rootdir=) (initialized lazily). Clear the package selection on subsequent calls. ''' self._apt_cache = None if not self._sandbox_apt_cache or arch != self._sandbox_apt_cache_arch: self._build_apt_sandbox(aptroot, apt_sources, 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 e: raise SystemError(str(e)) 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('package %s does not exist' % package) 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('package %s does not exist' % package) return inst.version def get_available_version(self, package): '''Return the latest available version of a package.''' return self._apt_pkg(package).candidate.version def get_dependencies(self, package): '''Return a list of packages a package depends on.''' cur_ver = self._apt_pkg(package)._pkg.current_ver if not cur_ver: # happens with virtual packages return [] return [d[0].target_pkg.name for d in cur_ver.depends_list.get('Depends', []) + cur_ver.depends_list.get('PreDepends', []) + cur_ver.depends_list.get('Recommends', [])] def get_source(self, package): '''Return the source package name for a package.''' if self._apt_pkg(package).installed: return self._apt_pkg(package).installed.source_name elif self._apt_pkg(package).candidate: return self._apt_pkg(package).candidate.source_name else: raise ValueError('package %s does not exist' % package) def get_package_origin(self, package): '''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): '''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 distro_name = self.get_os_version()[0] if pkg.candidate and pkg.candidate.origins: # might be None for o in pkg.candidate.origins: if o.origin == distro_name: return True # on Ubuntu system-image we might not have any /var/lib/apt/lists if set([o.origin for o in pkg.candidate.origins]) == set(['']) and \ os.path.exists('/etc/system-image/channel.ini'): return True return False def is_native_origin_package(self, package): '''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) as fd: for line in fd: line = line.strip() if line: native_origins.append(line) except IOError: 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 def get_lp_binary_package(self, distro_id, release, package, version, arch): # allow unauthenticated downloads apt.apt_pkg.config.set('APT::Get::AllowUnauthenticated', 'True') 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 elif 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']) def json_request(self, 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: response = urlopen(url) if response.getcode() >= 400: raise HTTPError('%u' % response.getcode()) except (URLError, HTTPError): apport.warning('cannot connect to: %s' % unquote(url)) return None try: content = response.read() except IOError: apport.warning('failure reading data at: %s' % unquote(url)) return None if isinstance(content, bytes): content = content.decode('utf-8') if entries: return json.loads(content)['entries'] else: return json.loads(content) def get_lp_source_package(self, distro_id, package, version): 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): '''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' elif self._apt_pkg(package).candidate: return self._apt_pkg(package).candidate.architecture or 'unknown' else: raise ValueError('package %s does not exist' % package) def get_files(self, package): '''Return list of files shipped by a package.''' list = self._call_dpkg(['-L', package]) if list is None: return None return [f for f in list.splitlines() if not f.startswith('diverted')] def get_modified_files(self, package): '''Return list of all modified files of a package.''' # get the maximum mtime of package files that we consider unmodified listfile = '/var/lib/dpkg/info/%s:%s.list' % (package, self.get_system_architecture()) if not os.path.exists(listfile): listfile = '/var/lib/dpkg/info/%s.list' % package 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 = '/var/lib/dpkg/info/%s:%s.md5sums' % (package, self.get_system_architecture()) if not os.path.exists(sumfile): sumfile = '/var/lib/dpkg/info/%s.md5sums' % package 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.warning('%s contains NUL character, ignoring line', sumfile) continue words = line.split() if not words: apport.warning('%s contains empty line, ignoring line', sumfile) continue s = os.stat(('/' + 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) else: 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.Popen(['dpkg-query', '-W', '--showformat=${Conffiles}', '--', package], stdout=subprocess.PIPE) out = dpkg.communicate()[0].decode() if dpkg.returncode != 0: return {} modified = {} for line in out.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 IOError as e: modified[path] = '[inaccessible: %s]' % str(e) else: modified[path] = '[deleted]' return modified def __fgrep_files(self, 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): p = subprocess.Popen(['fgrep', '-lxm', '1', '--', pattern] + file_list[i:(i + slice_size)], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE) out = p.communicate()[0].decode('UTF-8') if p.returncode == 0: match = out i += slice_size return match def get_file_package(self, file, uninstalled=False, map_cachedir=None, release=None, arch=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.Popen(['dpkg-divert', '--list', file], stdout=subprocess.PIPE, stderr=subprocess.PIPE) out = dpkg.communicate()[0].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) # first check the likely packages match = self.__fgrep_files(file, likely_lists) if not match: match = self.__fgrep_files(file, all_lists) # with usrmerge some binaries appear in usr but their .list file # doesn't reflect that so strip the /usr from the path if not match and file.startswith('/usr'): file = file[4:] match = self.__fgrep_files('%s' % file, likely_lists) if not match: match = self.__fgrep_files('%s' % file, all_lists) if match: return os.path.splitext(os.path.basename(match))[0].split(':')[0] return None @classmethod def get_system_architecture(klass): '''Return the architecture of the system, in the notation used by the particular distribution.''' dpkg = subprocess.Popen(['dpkg', '--print-architecture'], stdout=subprocess.PIPE) arch = dpkg.communicate()[0].decode().strip() assert dpkg.returncode == 0 assert arch return arch def get_library_paths(self): '''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. ''' dpkg = subprocess.Popen(['dpkg-architecture', '-qDEB_HOST_MULTIARCH'], stdout=subprocess.PIPE) multiarch_triple = dpkg.communicate()[0].decode().strip() assert dpkg.returncode == 0 return '/lib/%s:/lib' % multiarch_triple def set_mirror(self, url): '''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, dir, version=None, sandbox=None, apt_update=False): '''Download source package and unpack it into dir. This also has to care about applying patches etc., so that dir will eventually contain the actually compiled source. 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 dir). Return None if the source is not available. ''' # configure apt for sandbox env = os.environ.copy() if sandbox: f = tempfile.NamedTemporaryFile() f.write(('''Dir "%s"; Dir::State::Status "/var/lib/dpkg/status"; Debug::NoLocking "true"; ''' % sandbox).encode()) f.flush() env['APT_CONFIG'] = f.name if apt_update: subprocess.call(['apt-get', '-qq', 'update'], env=env) # fetch source tree argv = ['apt-get', '-qq', '--assume-yes', 'source', srcpackage] if version: argv[-1] += '=' + version try: if subprocess.call(argv, cwd=dir, env=env) != 0: if not version: return None sf_urls = self.get_lp_source_package(self.get_distro_name(), 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=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(dir, '*.dsc')): subprocess.call(['dpkg-source', '-sn', '-x', dsc], stdout=subprocess.PIPE, cwd=dir) else: return None except OSError: return None # find top level directory root = None for d in glob.glob(os.path.join(dir, 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): '''Return the actual Linux kernel package name. This is used when the user reports a bug against the "linux" package. ''' # TODO: Ubuntu specific return 'linux-image-' + os.uname()[2] def _install_debug_kernel(self, report): '''Install kernel debug package Ideally this would be just another package but the kernel is special in various ways currently so we can not use the apt method. ''' installed = [] outdated = [] kver = report['Uname'].split()[1] arch = report['Architecture'] ver = report['Package'].split()[1] debug_pkgname = 'linux-image-debug-%s' % kver c = self._cache() if debug_pkgname in c and c[debug_pkgname].isInstalled: # print('kernel ddeb already installed') return (installed, outdated) target_dir = apt.apt_pkg.config.find_dir('Dir::Cache::archives') + '/partial' deb = '%s_%s_%s.ddeb' % (debug_pkgname, ver, arch) # FIXME: this package is currently not in Packages.gz url = 'http://ddebs.ubuntu.com/pool/main/l/linux/%s' % deb out = open(os.path.join(target_dir, deb), 'w') # urlretrieve does not return 404 in the headers so we use urlopen u = urlopen(url) if u.getcode() > 400: return ('', 'linux') while True: block = u.read(8 * 1024) if not block: break out.write(block) out.flush() out.close() ret = subprocess.call(['dpkg', '-i', os.path.join(target_dir, deb)]) if ret == 0: installed.append(deb.split('_')[0]) return (installed, outdated) def install_packages(self, rootdir, configdir, release, packages, verbose=False, cache_dir=None, permanent_rootdir=False, architecture=None, origins=None, install_dbg=True, install_deps=False): '''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_sources = '/etc/apt/sources.list' self.current_release_codename = self.get_distro_codename() else: # support architecture specific config, fall back to global config apt_sources = os.path.join(configdir, release, 'sources.list') if architecture != self.get_system_architecture(): arch_apt_sources = os.path.join(configdir, release, architecture, 'sources.list') if os.path.exists(arch_apt_sources): apt_sources = arch_apt_sources # set mirror for get_file_package() try: self.set_mirror(self._get_primary_mirror_from_apt_sources(apt_sources)) except SystemError as e: apport.warning('cannot determine mirror: %s' % str(e)) # set current release code name for _distro_release_to_codename with open(os.path.join(configdir, release, 'codename')) as f: self.current_release_codename = f.read().strip() if not os.path.exists(apt_sources): raise SystemError('%s does not exist' % apt_sources) # create apt sandbox if cache_dir: tmp_aptroot = False if architecture != self.get_system_architecture(): aptroot_arch = architecture else: aptroot_arch = '' if configdir: aptroot = os.path.join(cache_dir, release, aptroot_arch, 'apt') else: aptroot = os.path.join(cache_dir, 'system', aptroot_arch, 'apt') 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 verbose: fetchProgress = apt.progress.text.AcquireProgress() else: fetchProgress = apt.progress.base.AcquireProgress() if not tmp_aptroot: cache = self._sandbox_cache(aptroot, apt_sources, fetchProgress, self.get_distro_name(), self.current_release_codename, origins, architecture) else: self._build_apt_sandbox(aptroot, apt_sources, self.get_distro_name(), self.current_release_codename, origins) cache = apt.Cache(rootdir=os.path.abspath(aptroot)) try: cache.update(fetchProgress) except apt.cache.FetchFailedException as e: raise SystemError(str(e)) 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) 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 = cache[pkg] except KeyError: m = 'package %s does not exist, ignoring' % pkg.replace('%', '%%') obsolete += m + '\n' apport.warning(m) continue for dep in cache_pkg.candidate.dependencies: # the dependency may be satisified by a different package if dep[0].name not in cache: dep[0] = 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 = 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 = cache[pkg] except KeyError: m = 'package %s does not exist, ignoring' % pkg.replace('%', '%%') obsolete += m + '\n' apport.warning(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(self.get_distro_name(), release, pkg, ver, architecture) if lp_url: acquire_queue.append(apt.apt_pkg.AcquireFile(fetcher, lp_url, hash="sha1:%s" % sha1sum, destdir=archivedir)) lp_cache[pkg] = ver else: obsolete += '%s version %s required, but %s is available\n' % (pkg, ver, cache_pkg.candidate.version) candidate = cache_pkg.candidate real_pkgs.add(pkg) if permanent_rootdir: 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(pkg) 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 = conflict[0] if cache.is_virtual_package(conflict[0]): try: providers = virtual_mapping[conflict[0]] 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, '%s_*.deb' % p) for path in glob.glob(debs): ver = self._deb_version(path) if apt.apt_pkg.check_dep(ver, conflict[2], conflict[1]): os.unlink(path) try: del pkg_versions[p] except KeyError: pass del providers else: debs = os.path.join(archivedir, '%s_*.deb' % conflict[0]) for path in glob.glob(debs): ver = self._deb_version(path) if apt.apt_pkg.check_dep(ver, conflict[2], conflict[1]): os.unlink(path) try: del pkg_versions[conflict[0]] except KeyError: pass if candidate.architecture != 'all' and install_dbg: try: dbg_pkg = pkg + '-dbg' dbg = 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(self.get_distro_name(), release, dbg_pkg, ver, architecture) if lp_url: acquire_queue.append(apt.apt_pkg.AcquireFile(fetcher, lp_url, hash="sha1:%s" % 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 KeyError if not pkg_found: try: dbg.candidate = dbg.versions[candidate.version] except KeyError: obsolete += 'outdated -dbg package for %s: package version %s -dbg version %s\n' % ( pkg, ver, dbg.candidate.version) 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 dbgs = [p for p in src_records.binaries if p.endswith('-dbg') and p in cache and 'transitional' not in 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 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: cache[p].candidate = cache[p].versions[ver] pkg_found = True except KeyError: (lp_url, sha1sum) = self.get_lp_binary_package(self.get_distro_name(), release, p, ver, architecture) if lp_url: acquire_queue.append(apt.apt_pkg.AcquireFile(fetcher, lp_url, hash="sha1:%s" % sha1sum, destdir=archivedir)) lp_cache[p] = ver pkg_found = True if not pkg_found: try: cache[p].candidate = 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 = pkg + '-dbgsym' try: dbgsym = 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(self.get_distro_name(), release, dbgsym_pkg, ver, architecture) if lp_url: acquire_queue.append(apt.apt_pkg.AcquireFile(fetcher, lp_url, hash="sha1:%s" % 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 += 'outdated debug symbol package for %s: package version %s dbgsym version %s\n' % ( pkg, candidate.version, dbgsym.candidate.version) except KeyError: if ver: (lp_url, sha1sum) = self.get_lp_binary_package(self.get_distro_name(), release, dbgsym_pkg, ver, architecture) if lp_url: acquire_queue.append(apt.apt_pkg.AcquireFile(fetcher, lp_url, hash="sha1:%s" % sha1sum, destdir=archivedir)) lp_cache[dbgsym_pkg] = ver pkg_found = True if not pkg_found: obsolete += 'no debug symbol package found for %s\n' % pkg # unpack packages, weed out the ones that are already installed (for # permanent sandboxes) 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) == cache[p].candidate.version: # print('Removing %s which is already the right version' % p) real_pkgs.remove(p) else: # print('Installing %s version %s' % (p, cache[p].candidate.version)) cache[p].mark_install(False, False) elif pkg_versions.get(p) != requested_pkgs[p]: # print('Installing %s version %s' % (p, cache[p].candidate.version)) cache[p].mark_install(False, False) elif pkg_versions.get(p) != cache[p].candidate.version: # print('Installing %s version %s' % (p, cache[p].candidate.version)) cache[p].mark_install(False, False) else: # print('Removing %s which is already the right version' % p) real_pkgs.remove(p) else: if pkg_versions.get(p) != cache[p].candidate.version: # print('Installing %s' % p) cache[p].mark_install(False, False) else: # print('Removing %s which is already the right version' % p) real_pkgs.remove(p) last_written = time.time() # fetch packages try: cache.fetch_archives(fetcher=fetcher) except apt.cache.FetchFailedException as e: apport.error('Package download error, try again later: %s', str(e)) sys.exit(1) # transient error if verbose: print('Extracting downloaded debs...') for i in fetcher.items: 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') 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, '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 # @classmethod def _call_dpkg(klass, args): '''Call dpkg with given arguments and return output, or return None on error.''' dpkg = subprocess.Popen(['dpkg'] + args, stdout=subprocess.PIPE, stderr=subprocess.PIPE) out = dpkg.communicate(input)[0].decode('UTF-8') if dpkg.returncode == 0: return out else: raise ValueError('package does not exist') def _check_files_md5(self, sumfile): '''Internal function for calling md5sum. This is separate from get_modified_files so that it is automatically testable. ''' if os.path.exists(sumfile): m = subprocess.Popen(['/usr/bin/md5sum', '-c', sumfile], stdout=subprocess.PIPE, stderr=subprocess.PIPE, cwd='/', env={}) out = m.communicate()[0].decode('UTF-8', errors='replace') else: assert type(sumfile) == bytes, 'md5sum list value must be a byte array' m = subprocess.Popen(['/usr/bin/md5sum', '-c'], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, cwd='/', env={}) out = m.communicate(sumfile)[0].decode('UTF-8', errors='replace') # if md5sum succeeded, don't bother parsing the output if m.returncode == 0: return [] mismatches = [] for line in out.splitlines(): if line.endswith('FAILED'): mismatches.append(line.rsplit(':', 1)[0]) return mismatches @classmethod def _get_primary_mirror_from_apt_sources(klass, apt_sources): '''Heuristically determine primary mirror from an apt sources.list''' with open(apt_sources) as f: for line in f: fields = line.split() if len(fields) >= 3 and fields[0] == 'deb': if fields[1].startswith('['): # options given, mirror is in third field mirror_idx = 2 else: mirror_idx = 1 if fields[mirror_idx].startswith('http://') or \ fields[mirror_idx].startswith('https://'): return fields[mirror_idx] else: raise SystemError('cannot determine default mirror: %s does not contain a valid deb line' % apt_sources) def _get_mirror(self): '''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/sources.list') return self._mirror def _distro_release_to_codename(self, release): '''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 hasattr(self, 'current_release_codename') and self.current_release_codename is not None: return self.current_release_codename raise NotImplementedError('Cannot map DistroRelease to a code name without install_packages()') def _search_contents(self, file, map_cachedir, release, arch): '''Internal function for searching file in Contents.gz.''' if map_cachedir: dir = map_cachedir else: if not self._contents_dir: self._contents_dir = tempfile.mkdtemp() dir = 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) # this is ordered by likelihood of installation with the most common # last for pocket in ['-proposed', '', '-security', '-updates']: map = os.path.join(dir, '%s%s-Contents-%s.gz' % (release, pocket, arch)) # check if map exists and is younger than a day; if not, we need # to refresh it update = False try: st = os.stat(map) age = int(time.time() - st.st_mtime) except OSError: age = None if age is None or age >= 86400: url = '%s/dists/%s%s/Contents-%s.gz' % (self._get_mirror(), release, pocket, arch) if age: try: from httplib import HTTPConnection from urlparse import urlparse except ImportError: # python 3 from http.client import HTTPConnection from urllib.parse import urlparse from datetime import datetime # HTTPConnection requires server name e.g. # archive.ubuntu.com server = urlparse(url)[1] conn = HTTPConnection(server) conn.request("HEAD", urlparse(url)[2]) res = conn.getresponse() modified_str = res.getheader('last-modified', None) if modified_str: modified = datetime.strptime(modified_str, '%a, %d %b %Y %H:%M:%S %Z') update = (modified > datetime.fromtimestamp(st.st_mtime)) else: update = True else: update = True if update: self._contents_update = True try: src = urlopen(url) except IOError: # we ignore non-existing pockets, but we do crash if the # release pocket doesn't exist if pocket == '': raise else: continue with open(map, 'wb') as f: while True: data = src.read(1000000) if not data: break f.write(data) src.close() assert os.path.exists(map) contents_mapping = self._contents_mapping(dir, release, arch) # if the mapping is empty build it if not contents_mapping or len(contents_mapping) == 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: import gzip with gzip.open('%s' % map, 'rb') as contents: line_num = 0 for line in contents: line_num += 1 # the first 32 lines are descriptive only for these # releases if pocket == '' and release in ['trusty', 'xenial'] \ and line_num < 33: continue path = line.split()[0] if path.split(b'/')[0] == b'usr': if path.split(b'/')[1] not in (b'lib', b'libexec', b'libx32', b'bin', b'sbin', b'share', b'games', b'Brother'): continue if path.split(b'/')[1] == b'share' and \ path.split(b'/')[2] in (b'doc', b'icons', b'man', b'texlive', b'gocode', b'locale', b'help'): continue package = line.split()[-1].split(b',')[0].split(b'/')[-1] elif path.split(b'/')[0] in (b'lib', b'bin', b'sbin'): package = line.split()[-1].split(b',')[0].split(b'/')[-1] else: continue if path in contents_mapping: if package == contents_mapping[path]: continue else: # if the package was updated use the update # b/c everyone should have packages from # -updates and -security installed contents_mapping[path] = package else: contents_mapping[path] = package # the file only needs to be saved after an update if self._contents_update: self._save_contents_mapping(dir, release, arch) # the update of the mapping only needs to be done once self._contents_update = False if isinstance(file, bytes): file = file.decode() if file[0] == '/': file = file[1:] files = [file.encode()] if file.startswith('usr/lib/x86_64-linux-gnu/'): files.append(file[4:].encode()) elif file.startswith('usr/lib/i386-linux-gnu/'): files.append(file[4:].encode()) elif file.startswith('usr/lib/systemd/'): files.append(file[4:].encode()) elif file.startswith('usr/lib/udev/'): files.append(file[4:].encode()) elif file.startswith('usr/bin/'): files.append(file[4:].encode()) elif file.startswith('usr/sbin/'): files.append(file[4:].encode()) for file in files: try: pkg = contents_mapping[file].decode() return pkg except KeyError: pass return None @classmethod def create_ppa_source_from_origin(klass, origin, distro, release_codename): '''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. Return a string containing content suitable for writing to a sources.list file, or None if the origin is not a Launchpad PPA. ''' if origin.startswith("LP-PPA-"): 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 closing(urlopen(apport.packaging._ppa_archive_url % {'user': user, 'distro': distro, 'ppaname': ppa_name})) as response: response.read() # in Python 2 an error does not raise an exception if response.getcode() >= 400: raise HTTPError('%u' % response.getcode()) except (URLError, HTTPError): index += 1 if index == len(components): if try_ppa: components.append('ppa') try_ppa = False index = 2 else: user = None continue break if user and ppa_name: ppa_line = 'deb http://ppa.launchpad.net/%s/%s/%s %s main' % \ (user, ppa_name, distro, release_codename) debug_url = 'http://ppa.launchpad.net/%s/%s/%s/dists/%s/main/debug' % \ (user, ppa_name, distro, release_codename) try: with closing(urlopen(debug_url)) as response: response.read() # in Python 2 an error does not raise an exception if response.getcode() >= 400: raise HTTPError('%u' % response.getcode()) add_debug = ' main/debug' except (URLError, HTTPError): add_debug = '' return ppa_line + add_debug + '\ndeb-src' + ppa_line[3:] + '\n' return None @classmethod def _build_apt_sandbox(klass, apt_root, apt_sources, distro_name, release_codename, origins): # 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 list_d = os.path.join(apt_root, 'etc', 'apt', 'sources.list.d') if os.path.exists(list_d): shutil.rmtree(list_d) if os.path.isdir(apt_sources + '.d'): shutil.copytree(apt_sources + '.d', list_d) else: os.makedirs(list_d) with open(apt_sources) as src: with open(os.path.join(apt_root, 'etc', 'apt', 'sources.list'), 'w') as dest: dest.write(src.read()) if origins: source_list_content = '' # 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 = None if os.path.isdir(apt_sources + '.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- origin_path = os.path.join(apt_sources + '.d', origin + '.list') if not os.path.exists(origin_path) and 'LP-PPA' in origin: origin_path = os.path.join(apt_sources + '.d', origin.strip('LP-PPA-') + '.list') if not os.path.exists(origin_path): origin_path = None elif not os.path.exists(origin_path): origin_path = None if origin_path: with open(origin_path) as src_ext: source_list_content = src_ext.read() else: source_list_content = klass.create_ppa_source_from_origin(origin, distro_name, release_codename) if source_list_content: with open(os.path.join(apt_root, 'etc', 'apt', 'sources.list.d', origin + '.list'), 'a') as dest: dest.write(source_list_content) for line in source_list_content.splitlines(): if line.startswith('#'): continue if 'ppa.launchpad.net' not in line: continue user = line.split()[1].split('/')[3] ppa = line.split()[1].split('/')[4] origin_data[origin] = (user, ppa) else: apport.warning("Could not find or create source config for %s" % origin) # install apt keyrings; prefer the ones from the config dir, fall back # to system trusted_gpg = os.path.join(os.path.dirname(apt_sources), '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(trusted_gpg + '.d'): shutil.copytree(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) # install apt keyrings for PPAs if origins and source_list_content: for origin, (ppa_user, ppa_name) in origin_data.items(): ppa_archive_url = apport.packaging._ppa_archive_url % \ {'user': quote(ppa_user), 'distro': distro_name, 'ppaname': quote(ppa_name)} ppa_info = apport.packaging.json_request(ppa_archive_url) if not ppa_info: continue try: signing_key_fingerprint = ppa_info['signing_key_fingerprint'] except IndexError: apport.warning("Error: can't find signing_key_fingerprint at %s" % ppa_archive_url) continue argv = ['apt-key', '--keyring', os.path.join(trusted_d, '%s.gpg' % origin), 'adv', '--quiet', '--keyserver', 'keyserver.ubuntu.com', '--recv-key', signing_key_fingerprint] if subprocess.call(argv) != 0: apport.warning('Unable to import key for %s' % ppa_archive_url) pass @classmethod def _deb_version(klass, pkg): '''Return the version of a .deb file''' dpkg = subprocess.Popen(['dpkg-deb', '-f', pkg, 'Version'], stdout=subprocess.PIPE) out = dpkg.communicate(input)[0].decode('UTF-8').strip() assert dpkg.returncode == 0 assert out return out def compare_versions(self, ver1, ver2): '''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): '''Get "lsb_release -sc", cache the result.''' if self._distro_codename is None: lsb_release = subprocess.Popen(['lsb_release', '-sc'], stdout=subprocess.PIPE) self._distro_codename = lsb_release.communicate()[0].decode('UTF-8').strip() assert lsb_release.returncode == 0 return self._distro_codename _distro_name = None def get_distro_name(self): '''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()
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