/usr/share/pyshared/jockey/oslib.py is in jockey-common 0.9.7-0ubuntu7.16.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# (c) 2007 Canonical Ltd.
#
# 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.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
'''Encapsulate operations which are Linux distribution specific.'''
import fcntl, os, subprocess, sys, logging, re, tempfile, time, shutil
from glob import glob
import warnings
warnings.simplefilter('ignore', FutureWarning)
import apt
from jockey.kerneldetection import KernelDetection
class _CapturedInstallProgress(apt.InstallProgress):
def __init__(self):
apt.InstallProgress.__init__(self)
self.out = None
def fork(self):
'''Reroute stdout/stderr to files, so that we can log them'''
self.out = tempfile.TemporaryFile()
p = os.fork()
if p == 0:
os.dup2(self.out.fileno(), sys.stdout.fileno())
os.dup2(self.out.fileno(), sys.stderr.fileno())
return p
class OSLib:
'''Encapsulation of operating system/Linux distribution specific operations.'''
# global default instance
inst = None
def __init__(self, client_only=False, target_kernel=None):
'''Set default paths and load the module blacklist.
Distributors might want to override some default paths.
If client_only is True, this only initializes functionality which is
needed by clients, and which can be done without special privileges.
If target_kernel is given, it is used instead of the default
os.uname()[2]. This is primarily useful for distribution installers
where the target system kernel differs from the installer kernel.
'''
# relevant stuff for clients and backend
self._get_os_version()
# /sys/ path; the main purpose of changing this is for test
# suites, but some vendors might have /sys in a nonstandard place
self.sys_dir = '/sys'
if client_only:
return
# below follows stuff which is only necessary for the backend
# default paths
# path to a modprobe.d configuration file where kernel modules are
# enabled and disabled with blacklisting
self.module_blacklist_file = '/etc/modprobe.d/blacklist-local.conf'
# path to modinfo binary
self.modinfo_path = '/sbin/modinfo'
# path to modprobe binary
self.modprobe_path = '/sbin/modprobe'
# path to kernel's list of loaded modules
self.proc_modules = '/proc/modules'
# default path to custom handlers
self.handler_dir = '/usr/share/jockey/handlers'
if target_kernel:
self.target_kernel = target_kernel
else:
self.target_kernel = os.uname()[2]
# default paths to modalias files (directory entries will consider all
# files in them)
self.modaliases = [
'/lib/modules/%s/modules.alias' % self.target_kernel,
'/usr/share/jockey/modaliases/',
]
# path to X.org configuration file
self.xorg_conf_path = '/etc/X11/xorg.conf'
self.set_backup_dir()
# cache file for previously seen/newly used handlers lists (for --check)
self.check_cache = os.path.join(self.backup_dir, 'check')
self._load_module_blacklist()
# Possible paths of a file with a set of SSL certificates which are
# considered trustworthy. The first one that exists will be used.
# This is used for downloading GPG key fingerprints for
# openprinting.org driver packages.
self.ssl_cert_file_paths = [
# Debian/Ubuntu use the ca-certificates package:
'/etc/ssl/certs/ca-certificates.crt'
]
# default GPG key server
# this is the generally recommended DNS round-robin, but usually very
# slow:
#self.gpg_key_server = 'keys.gnupg.net'
self.gpg_key_server = 'hkp://keyserver.ubuntu.com:80'
# We want to install the linux flavour metapackage here, to ensure
# upgrades will keep working.
kernel_detection = KernelDetection()
self.kernel_header_package = kernel_detection.get_linux_metapackage()
self.apt_show_cache = {}
self.apt_sources = '/etc/apt/sources.list'
self.apt_jockey_source = '/etc/apt/sources.list.d/jockey.list'
self.apt_trusted_keyring = '/etc/apt/trusted.gpg.d/jockey-drivers.gpg'
self._current_xorg_video_abi = None
self._quantal_xserver = 'xserver-xorg-core-lts-quantal'
self._raring_xserver = 'xserver-xorg-core-lts-raring'
self._saucy_xserver = 'xserver-xorg-core-lts-saucy'
self._trusty_xserver = 'xserver-xorg-core-lts-trusty'
#
# The following package related functions use PackageKit; if that does not
# work for your distribution, they must be reimplemented
#
def _apt_show(self, package):
'''Return apt-cache show output, with caching.
Return None if the package does not exist.
'''
try:
return self.apt_show_cache[package]
except KeyError:
apt = subprocess.Popen(['apt-cache', 'show', package],
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out = apt.communicate()[0].strip()
if apt.returncode == 0 and out:
result = out
else:
result = None
self.apt_show_cache[package] = result
return result
def is_package_free(self, package):
'''Return if given package is free software.'''
# TODO: this only works for packages in the official archive
out = self._apt_show(package)
if out:
for l in out.splitlines():
if l.startswith('Section:'):
s = l.split()[-1]
return not (s.startswith('restricted') or s.startswith('multiverse'))
raise ValueError('package %s does not exist' % package)
def package_installed(self, package, *args):
'''Return if the given package is installed.'''
dpkg = subprocess.Popen(["dpkg-query", "-W", "-f${Status}", package],
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out = dpkg.communicate()[0]
return dpkg.returncode == 0 and out.split()[-1] == "installed"
def package_description(self, package):
'''Return a tuple (short_description, long_description) for a package.
This should raise a ValueError if the package is not available.
'''
out = self._apt_show(package)
if out:
lines = out.splitlines()
start = 0
while start < len(lines)-1:
if lines[start].startswith('Description'):
break
start += 1
else:
raise SystemError('failed to parse package description from ' + '\n'.join(lines))
short = lines[start].split(' ', 1)[1]
long = ''
for l in lines[start+1:]:
if l == ' .':
long += '\n\n'
elif l.startswith(' '):
long += ' ' + l.lstrip()
else:
break
return (short, long)
raise ValueError('package %s does not exist' % package)
def package_files(self, package):
'''Return a list of files shipped by a package.
This should raise a ValueError if the package is not installed.
'''
pkcon = subprocess.Popen(['dpkg', '-L', package],
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out = pkcon.communicate()[0]
if pkcon.returncode == 0:
return out.splitlines()
else:
raise ValueError('package %s is not installed' % package)
def install_package(self, package, progress_cb, repository=None,
fingerprint=None):
'''Install the given package.
As this is called in the backend, this must happen noninteractively.
For progress reporting, progress_cb(phase, current, total) is called
regularly, with 'phase' being 'download' or 'install'. If the callback
returns True, the installation is attempted to get cancelled (this
will probably succeed in the 'download' phase, but not in 'install').
Passes '-1' for current and/or total if time cannot be determined.
If this succeeds, subsequent package_installed(package) calls must
return True.
If a repository URL is given, that repository is added to the system
first. The format for repository is distribution specific. This function
should also download/update the package index for this repository when
adding it.
.
fingerprint, if not None, is a GPG-style fingerprint of that
repository; if present, this method should also retrieve that GPG key
from the keyservers, install it into the packaging system, and ensure
that the repository is signed with that key.
An unknown package should raise a ValueError. Any installation failure
due to bad packages should be logged, but not raise an exception, as
this would just crash the backend.
'''
class MyFetchProgress(apt.FetchProgress):
def __init__(self, callback):
apt.FetchProgress.__init__(self)
self.callback = callback
def pulse(self):
# consider download as 40% of the total progress for installation
logging.debug('download progress %s %f' % (pkg, self.percent))
return not self.callback('download', int(self.percent/2.5+10.5), 100)
class MyInstallProgress(_CapturedInstallProgress):
def __init__(self, callback):
_CapturedInstallProgress.__init__(self)
self.callback = callback
def statusChange(self, pkg, percent, status):
# consider install as 50% of the total progress for installation
logging.debug('install progress %s %f' % (pkg, percent))
self.callback('install', int(percent/4+50.5), 100)
logging.debug('Installing package: %s', package)
if progress_cb:
progress_cb('download', 0, 100.0)
if repository:
if not self.repository_enabled(repository):
logging.debug('install_package(): adding repository %s', repository)
self._add_repository(repository, fingerprint, progress_cb)
repository_added = True
else:
logging.debug('install_package(): repository %s already active', repository)
repository_added = False
os.environ['DEBIAN_FRONTEND'] = 'noninteractive'
# Disconnect from any running Debconf instance.
try:
del os.environ['DEBIAN_HAS_FRONTEND']
except KeyError:
pass
try:
del os.environ['DEBCONF_USE_CDEBCONF']
except KeyError:
pass
os.environ['PATH'] = '/sbin:/usr/sbin:/bin:/usr/bin'
apt.apt_pkg.config.set('DPkg::options::','--force-confnew')
c = apt.Cache()
try:
try:
pkg = c[package]
origins = pkg.candidate.origins
except (KeyError, AttributeError):
raise ValueError('Package %s does not exist' % package)
# if we have a binary package, we require a trusted origin; if we
# don't have one, and we added a repository, remove it again
# note: pkg.candidate.architecture switched away from "all" in Ubuntu 11.04
if pkg.candidate.record['Architecture'] != 'all' and \
not pkg.candidate.uri.startswith('file:/'):
for o in origins:
if o.trusted:
break
else:
logging.error('Binary package %s has no trusted origin, rejecting', package)
if repository and repository_added:
self._remove_repository(repository)
return
pkg.markInstall()
inst_p = progress_cb and MyInstallProgress(progress_cb) or None
try:
try:
orig_excepthook = sys.excepthook
sys.excepthook = sys.__excepthook__
c.commit(progress_cb and MyFetchProgress(progress_cb) or None, inst_p)
finally:
sys.excepthook = orig_excepthook
if inst_p and inst_p.out:
inst_p.out.seek(0)
apt_out = inst_p.out.read().decode('UTF-8', errors='replace')
inst_p.out.close()
logging.debug(apt_out)
else:
apt_out = ''
except SystemError as e:
logging.error('Package failed to install:\n' + apt_out)
return
except apt.cache.FetchCancelledException as e:
return
except (apt.cache.LockFailedException, apt.cache.FetchFailedException) as e:
logging.error('Package fetching failed: %s', str(e))
def remove_package(self, package, progress_cb):
'''Uninstall the given package.
As this is called in the backend, this must happen noninteractively.
For progress reporting, progress_cb(current, total) is called
regularly. Passes '-1' for current and/or total if time cannot be
determined.
If this succeeds, subsequent package_installed(package) calls must
return False.
Any removal failure should be raised as a SystemError.
'''
os.environ['DEBIAN_FRONTEND'] = 'noninteractive'
os.environ['PATH'] = '/sbin:/usr/sbin:/bin:/usr/bin'
class MyInstallProgress(_CapturedInstallProgress):
def __init__(self, callback):
_CapturedInstallProgress.__init__(self)
self.callback = callback
def statusChange(self, pkg, percent, status):
logging.debug('remove progress statusChange %s %f' % (pkg, percent))
self.callback(percent, 100.0)
logging.debug('Removing package: %s', package)
c = apt.Cache()
try:
try:
c[package].markDelete()
except KeyError:
logging.debug('Package %s does not exist, aborting', package)
return False
inst_p = progress_cb and MyInstallProgress(progress_cb) or None
try:
try:
c.commit(None, inst_p)
finally:
if inst_p and inst_p.out:
inst_p.out.seek(0)
apt_out = inst_p.out.read().decode('UTF-8', errors='replace')
inst_p.out.close()
logging.debug(apt_out)
else:
apt_out = None
except SystemError as e:
if apt_out:
raise SystemError('Package failed to remove:\n' + apt_out)
else:
raise
except apt.cache.LockFailedException as e:
logging.debug('could not lock apt cache, aborting: %s', str(e))
raise SystemError, str(e)
return True
def has_repositories(self):
'''Check if package repositories are available.
This might not be the case after a fresh installation, when package
indexes haven't been downloaded yet.
'''
apt_policy = subprocess.Popen(['apt-cache', 'policy', 'dkms'],
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out = apt_policy.communicate()[0]
return '://' in out or 'file:/' in out
def update_repository_indexes(self, progress_cb):
'''Download package repository indexes.
Return True on success, False otherwise.
As this is called in the backend, this must happen noninteractively.
For progress reporting, progress_cb(current, total) is called
regularly. Passes '-1' for current and/or total if time cannot be
determined.
'''
os.environ['PATH'] = '/sbin:/usr/sbin:/bin:/usr/bin'
class MyProgress(apt.FetchProgress):
def __init__(self, callback):
apt.FetchProgress.__init__(self)
self.callback = callback
def pulse(self):
#logging.debug('index download progress %f' % self.percent)
self.callback(self.percent, 100.0)
c = apt.Cache()
try:
c.update(progress_cb and MyProgress(progress_cb) or None)
except apt.cache.LockFailedException as e:
logging.debug('could not lock apt cache, aborting: %s', str(e))
raise SystemError(str(e))
return self.has_repositories()
def packaging_system(self):
'''Return packaging system.
Currently defined values: apt, yum
'''
if os.path.exists('/etc/apt/sources.list') or os.path.exists(
'/etc/apt/sources.list.d'):
return 'apt'
elif os.path.exists('/etc/yum.conf'):
return 'yum'
raise NotImplementedError('local packaging system is unknown')
def import_gpg_key(self, keyring, fingerprint):
'''Download and install a GPG key identified by fingerprint.
This verifies that the fingerprint matches, and if so, installs it into
the given keyring file (will be created if it does not exist).
Raise a SystemError if anything goes wrong.
'''
if fingerprint in self._gpg_keyring_fingerprints(keyring):
return
# gpg likes to write trustdb and temporary files, so create a temporary
# home directory
keyid = fingerprint.replace(' ', '')[-8:]
gpghome = tempfile.mkdtemp()
default_keyring = os.path.join(gpghome, 'pubring.gpg')
try:
# we first import into a temporary keyring, as we need to verify
# the fingerprint
gpg = subprocess.Popen(['gpg', '--homedir', gpghome,
'--no-default-keyring', '--primary-keyring', default_keyring,
'--keyserver', self.gpg_key_server, '--recv-key', keyid],
stdout=subprocess.PIPE, stderr=subprocess.PIPE,
env={'PATH': os.environ.get('PATH', ''),
'http_proxy': os.environ.get('http_proxy', '')})
(out, err) = gpg.communicate()
if fingerprint not in self._gpg_keyring_fingerprints(default_keyring):
raise SystemError('gpg failed to import key: ' + err)
# now move over to the actual keyring; for multiple matches of the
# same key ID it would be great to be able to select the one that
# we want, but unfortunately the GPG command line doesn't really
# allow that; fortunately key ID conflicts are very rare.
gpg = subprocess.Popen(['gpg', '--homedir', gpghome,
'--no-default-keyring', '--primary-keyring', keyring,
'--import', default_keyring],
stdout=subprocess.PIPE, stderr=subprocess.PIPE,
env={'PATH': os.environ.get('PATH', '')})
(out, err) = gpg.communicate()
if fingerprint not in self._gpg_keyring_fingerprints(default_keyring):
raise SystemError('gpg failed to import key: ' + err)
logging.debug('import_gpg_key(): Successfully imported key' + keyid)
except OSError as e:
raise SystemError('failed to call gpg: ' + str(e))
finally:
shutil.rmtree(gpghome)
def _gpg_keyring_fingerprints(self, keyring):
'''Return list of fingerprints in given keyring'''
# gpg likes to write trustdb and temporary files, so create a temporary
# home directory
gpghome = tempfile.mkdtemp()
try:
result = []
gpg = subprocess.Popen(['gpg', '--homedir', gpghome,
'--no-default-keyring', '--primary-keyring', keyring,
'--fingerprint'], stdout=subprocess.PIPE,
stderr=subprocess.PIPE, env={})
(out, err) = gpg.communicate()
if gpg.returncode != 0:
logging.error('failed to call gpg for reading fingerprints: ' + err)
return []
for l in out.splitlines():
if 'fingerprint =' in l:
result.append(l.split('=')[1].strip())
return result
except OSError as e:
logging.error('failed to call gpg: ' + str(e))
return []
finally:
shutil.rmtree(gpghome)
#
# The following functions MUST be implemented by distributors
# Note that apt and yum PackageKit backends currently do not implement
# RepoSetData(), so those need to remain package system specific
#
def repository_enabled(self, repository):
'''Check if given repository is enabled.'''
for f in [self.apt_sources] + glob(self.apt_sources + '.d/*.list'):
try:
logging.debug('repository_enabled(%s): checking %s', repository, f)
for line in open(f):
if line.strip() == repository:
logging.debug('repository_enabled(%s): match', repository)
return True
except IOError:
pass
logging.debug('repository_enabled(%s): no match', repository)
return False
def ui_help_available(self, ui):
'''Return if help is available.
This gets the current UI object passed, which can be used to determine
whether GTK/KDE is used, etc.
'''
return os.access('/usr/bin/yelp', os.X_OK)
def ui_help(self, ui):
'''The UI's help button was clicked.
This should open a help HTML page or website, call yelp with an
appropriate topic, etc. This gets the current UI object passed, which
can be used to determine whether GTK/KDE is used, etc.
'''
if 'gtk' in str(ui.__class__).lower():
import gobject
gobject.spawn_async(['yelp', 'help:ubuntu-help/hardware-driver-proprietary'],
flags=gobject.SPAWN_SEARCH_PATH)
#
# The following functions have a reasonable default implementation for
# Linux, but can be tweaked by distributors
#
def set_backup_dir(self):
'''Setup self.backup_dir, directory where backup files are stored.
This is used for old xorg.conf, DriverDB caches, etc.
'''
self.backup_dir = '/var/cache/jockey'
if not os.path.isdir(self.backup_dir):
try:
os.makedirs(self.backup_dir)
except OSError as e:
logging.error('Could not create %s: %s, using temporary '
'directory; all your caches will be lost!',
self.backup_dir, str(e))
self.backup_dir = tempfile.mkdtemp(prefix='jockey_cache')
def ignored_modules(self):
'''Return a set of kernel modules which should be ignored.
This particularly effects free kernel modules which are shipped by the
OS vendor by default, and thus should not be controlled with this
program. Since this will include the large majority of existing kernel
modules, implementing this is also important for speed reasons; without
it, detecting existing modules will take quite long.
Note that modules which are ignored here, but covered by a custom
handler will still be considered.
'''
# try to get a *.ko file list from the main kernel package to avoid testing
# known-free drivers
dpkg = subprocess.Popen(['dpkg', '-L', 'linux-image-' + os.uname()[2]],
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out = dpkg.communicate()[0]
result = set()
if dpkg.returncode == 0:
for l in out.splitlines():
if l.endswith('.ko'):
result.add(os.path.splitext(os.path.basename(l))[0].replace('-', '_'))
return result
def module_blacklisted(self, module):
'''Check if a module is on the modprobe blacklist.'''
return module in self._module_blacklist or \
module in self._module_blacklist_system
def blacklist_module(self, module, blacklist):
'''Add or remove a kernel module from the modprobe blacklist.
If blacklist is True, the module is blacklisted, otherwise it is
removed from the blacklist.
'''
if blacklist:
self._module_blacklist.add(module)
else:
try:
self._module_blacklist.remove(module)
except KeyError:
return # no need to save the blacklist
self._save_module_blacklist()
def _load_module_blacklist(self):
'''Initialize self._module_blacklist{,_system}.'''
self._module_blacklist = set()
self._module_blacklist_system = set()
self._read_blacklist_file(self.module_blacklist_file, self._module_blacklist)
# read other blacklist files (which we will not touch, but evaluate)
for f in glob('%s/blacklist*' % os.path.dirname(self.module_blacklist_file)):
if f != self.module_blacklist_file:
self._read_blacklist_file(f, self._module_blacklist_system)
@classmethod
def _read_blacklist_file(klass, path, blacklist_set):
'''Read a blacklist file and add modules to blacklist_set.'''
try:
f = open(path)
except IOError:
return
try:
fcntl.flock(f.fileno(), fcntl.LOCK_SH)
for line in f:
# strip off comments
line = line[:line.find('#')].strip()
if not line.startswith('blacklist'):
continue
module = line[len('blacklist'):].strip()
if module:
blacklist_set.add(module)
finally:
f.close()
def _save_module_blacklist(self):
'''Save module blacklist.'''
if len(self._module_blacklist) == 0 and \
os.path.exists(self.module_blacklist_file):
os.unlink(self.module_blacklist_file)
return
os.umask(0o22)
# create directory if it does not exist
d = os.path.dirname(self.module_blacklist_file)
if not os.path.exists(d):
os.makedirs(d)
f = None
try:
f = open(self.module_blacklist_file, 'w')
fcntl.flock(f.fileno(), fcntl.LOCK_EX)
for module in sorted(self._module_blacklist):
print >> f, 'blacklist', module
except IOError as e:
logging.error('Failed to write to module blacklist: ' + str(e))
finally:
if f:
f.close()
def _get_os_version(self):
'''Initialize self.os_vendor and self.os_version.
This defaults to reading the values from lsb_release.
'''
p = subprocess.Popen(['lsb_release', '-si'], stdout=subprocess.PIPE,
stderr=subprocess.PIPE, close_fds=True)
self.os_vendor = p.communicate()[0].strip()
p = subprocess.Popen(['lsb_release', '-sr'], stdout=subprocess.PIPE,
stderr=subprocess.PIPE, close_fds=True)
self.os_version = p.communicate()[0].strip()
assert p.returncode == 0
def get_system_vendor_product(self):
'''Return (vendor, product) of the system hardware.
Either or both can be '' if they cannot be determined.
The default implementation queries sysfs.
'''
try:
vendor = open(os.path.join(self.sys_dir,
'class', 'dmi', 'id', 'sys_vendor')).read().strip()
except IOError:
vendor = ''
try:
product = open(os.path.join(self.sys_dir,
'class', 'dmi', 'id', 'product_name')).read().strip()
except IOError:
product = ''
return (vendor, product)
def notify_reboot_required(self):
'''Notify the system that a reboot is required.
This can be used as an extra indication when installing a driver which
needs a reboot to get active.
The default implementation does nothing.
'''
try:
subprocess.call(['/usr/share/update-notifier/notify-reboot-required'])
except OSError:
pass
def package_header_modaliases(self, cache=None):
'''Get modalias map from package headers.
Driver packages may declare the modaliases that they support in a
package header field, so that they do not need to have a separate
modalias file list already installed. The map must have the following
structure: package_name -> module_name -> [list of modaliases]
If this is not supported, simply return an empty dictionary here.
'''
result = {}
if cache is None:
cache = apt.Cache()
# get the system architecture, to avoid getting non-native multi-arch
# packages
dpkg = subprocess.Popen(['dpkg', '--print-architecture'],
stdout=subprocess.PIPE)
system_architecture = dpkg.communicate()[0].strip()
assert dpkg.returncode == 0
for package in cache:
if package.architecture() != system_architecture:
continue
try:
m = package.candidate.record['Modaliases']
except (KeyError, AttributeError):
continue
try:
for part in m.split(')'):
part = part.strip(', ')
if not part:
continue
module, lst = part.split('(')
for alias in lst.split(','):
result.setdefault(package.name, {}).setdefault(module,
[]).append(alias.strip())
except ValueError:
logging.error('Package %s has invalid modalias header: %s' % (
package.name, m))
return result
def ssl_cert_file(self):
'''Get file with trusted SSL certificates.
This is used for downloading GPG key fingerprints for
openprinting.org driver packages.
Return None if no certificates file is available.
'''
for f in self.ssl_cert_file_paths:
if os.path.exists(f):
return f
return None
@classmethod
def has_defaultroute(klass):
'''Return if there is a default route.
This is a reasonable indicator that online tests can be run.
'''
if klass._has_defaultroute_cache is None:
klass._has_defaultroute_cache = False
route = subprocess.Popen(['/sbin/route', '-n'],
stdout=subprocess.PIPE)
for l in route.stdout:
if l.startswith('0.0.0.0 '):
klass._has_defaultroute_cache = True
route.wait()
return klass._has_defaultroute_cache
_has_defaultroute_cache = None
def current_xorg_video_abi(self):
'''Return current X.org video ABI.
For an X.org video driver to actually work it must be built against the
currently used X.org driver ABI, otherwise it will cause crashes. This
method returns the currently expected video driver ABI from the X
server. If it is not None, it must match video_driver_abi() of a driver
package for this driver to be offered for installation.
If this returns None, ABI checking is disabled.
'''
binary_name = 'xserver-xorg-core'
suffix = ''
if self.quantal_xserver_installed():
suffix = '-lts-quantal'
elif self.raring_xserver_installed():
suffix = '-lts-raring'
elif self.saucy_xserver_installed():
suffix = '-lts-saucy'
elif self.trusty_xserver_installed():
suffix = '-lts-trusty'
binary_name = '%s%s' % (binary_name, suffix)
if not self._current_xorg_video_abi:
dpkg = subprocess.Popen(['dpkg', '-s', binary_name],
stdout=subprocess.PIPE)
out = dpkg.communicate()[0]
if dpkg.returncode == 0:
m = re.search('^Provides: .*(xorg-video-abi-\w+).*', out, re.M)
if m:
self._current_xorg_video_abi = m.group(1)
return self._current_xorg_video_abi
def video_driver_abi(self, package):
'''Return video ABI list for an X.org driver package.
For an X.org video driver to actually work it must be built against the
currently used X.org driver ABI, otherwise it will cause crashes. This
method returns the video ABI for a driver package. If it is not None,
one of the items it must match current_xorg_video_abi() for this driver
to be offered for installation.
If this returns None, ABI checking is disabled.
'''
abi = None
process = subprocess.Popen(['apt-cache', 'show', package],
stdout=subprocess.PIPE)
out = process.communicate()[0]
abis = []
if process.returncode == 0:
m = re.search('^Depends: (.*)$', out, re.M)
if m:
for dep in m.group(1).split(','):
if dep.strip()[:15] != 'xorg-video-abi-':
continue
abi_pkgs = dep.split('|')
for abi_pkg in abi_pkgs:
abis.append(abi_pkg.strip())
if len(abis)>0:
return abis
else:
return None
def quantal_xserver_installed(self):
'''Return whether quantal's backported xserver is installed'''
return self.package_installed(self._quantal_xserver)
def quantal_xserver_supported(self, package):
'''Return whether the package supports quantal's backported xserver'''
process = subprocess.Popen(['apt-cache', 'show', package],
stdout=subprocess.PIPE)
out = process.communicate()[0]
if process.returncode == 0:
m = re.search('^Depends: (.*)$', out, re.M)
if m:
for dep in m.group(1).split(','):
if not dep.strip().__contains__(self._quantal_xserver):
continue
return True
return False
def raring_xserver_installed(self):
'''Return whether raring's backported xserver is installed'''
return self.package_installed(self._raring_xserver)
def raring_xserver_supported(self, package):
'''Return whether the package supports raring's backported xserver'''
process = subprocess.Popen(['apt-cache', 'show', package],
stdout=subprocess.PIPE)
out = process.communicate()[0]
if process.returncode == 0:
m = re.search('^Depends: (.*)$', out, re.M)
if m:
for dep in m.group(1).split(','):
if not dep.strip().__contains__(self._raring_xserver):
continue
return True
return False
def saucy_xserver_installed(self):
'''Return whether saucy's backported xserver is installed'''
return self.package_installed(self._saucy_xserver)
def saucy_xserver_supported(self, package):
'''Return whether the package supports saucy's backported xserver'''
process = subprocess.Popen(['apt-cache', 'show', package],
stdout=subprocess.PIPE)
out = process.communicate()[0]
if process.returncode == 0:
m = re.search('^Depends: (.*)$', out, re.M)
if m:
for dep in m.group(1).split(','):
if not dep.strip().__contains__(self._saucy_xserver):
continue
return True
return False
def trusty_xserver_installed(self):
'''Return whether trusty's backported xserver is installed'''
return self.package_installed(self._trusty_xserver)
def trusty_xserver_supported(self, package):
'''Return whether the package supports trusty's backported xserver'''
process = subprocess.Popen(['apt-cache', 'show', package],
stdout=subprocess.PIPE)
out = process.communicate()[0]
if process.returncode == 0:
m = re.search('^Depends: (.*)$', out, re.M)
if m:
for dep in m.group(1).split(','):
if not dep.strip().__contains__(self._trusty_xserver):
continue
return True
return False
def package_transitional(self, package):
process = subprocess.Popen(['apt-cache', 'show', package],
stdout=subprocess.PIPE)
out = process.communicate()[0]
if process.returncode == 0:
m = re.search('.*transitional.*', out, re.M | re.I)
if m:
return True
return False
def package_available(self, package):
devnull = open(os.devnull, 'w')
process = subprocess.Popen(['apt-cache', 'show', package],
stdout=devnull, stderr=devnull)
process.communicate()
devnull.close()
return process.returncode == 0
#
# Internal helper methods
#
def _add_repository(self, repository, fingerprint, progress_cb):
'''Add a repository.
The format for repository is distribution specific. This function
should also download/update the package index for this repository.
This should throw a ValueError if the repository is invalid or
inaccessible.
fingerprint, if not None, is a GPG-style fingerprint of that
repository; if present, this method also retrieves that GPG key
from the keyservers and installs it into the packaging system.
'''
if fingerprint:
self.import_gpg_key(self.apt_trusted_keyring, fingerprint)
if os.path.exists(self.apt_jockey_source):
backup = self.apt_jockey_source + '.bak'
os.rename(self.apt_jockey_source, backup)
else:
backup = None
f = open(self.apt_jockey_source, 'a')
print >> f, repository.strip()
f.close()
class MyFetchProgress(apt.FetchProgress):
def __init__(self, callback):
apt.FetchProgress.__init__(self)
self.callback = callback
def pulse(self):
self.callback
logging.debug('index download progress %f' % self.percent)
# consider update as 10% of the total progress for installation
return not self.callback('download', int(self.percent/10+.5), 100)
c = apt.Cache()
try:
logging.debug('_add_repository(): Updating apt lists')
c.update(progress_cb and MyFetchProgress(progress_cb) or None,
sources_list=self.apt_jockey_source)
except SystemError, e:
logging.error('_add_repository(%s): Invalid repository', repository)
if backup:
os.rename(backup, self.apt_jockey_source)
else:
os.unlink(self.apt_jockey_source)
raise ValueError(e.message)
except apt.cache.FetchCancelledException, e:
return False
except (apt.cache.LockFailedException, apt.cache.FetchFailedException), e:
logging.warning('Package fetching failed: %s', str(e))
raise SystemError(str(e))
def _remove_repository(self, repository):
'''Remove a repository.
The format for repository is distribution specific.
'''
if not os.path.exists(self.apt_jockey_source):
return
result = []
for line in open(self.apt_jockey_source):
if line.strip() != repository:
result.append(line)
if result:
f = open(self.apt_jockey_source, 'w')
f.write('\n'.join(result))
f.close()
else:
os.unlink(self.apt_jockey_source)
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