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# Copyright (C) 2010-2014 Aleksey Lim
#
# 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 3 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, see <http://www.gnu.org/licenses/>.
import os
import re
import logging
from sugar_network.toolkit import lsb_release, gbus, enforce
_PK_MAX_RESOLVE = 100
_PK_MAX_INSTALL = 2500
_PMS_PATHS = {
'Debian': '/var/lib/dpkg/status',
'Fedora': '/var/lib/rpm/Packages',
'Ubuntu': '/var/lib/dpkg/status',
}
_logger = logging.getLogger('packagekit')
_pms_path = _PMS_PATHS.get(lsb_release.distributor_id())
def mtime():
if _pms_path:
return os.stat(_pms_path).st_mtime
def install(names):
ids = [i['pk_id'] for i in _resolve(names)]
while ids:
chunk = ids[:min(len(ids), _PK_MAX_INSTALL)]
del ids[:len(chunk)]
_logger.debug('Install %r', chunk)
resp = gbus.call(_pk, 'InstallPackages', True, chunk)
enforce(resp.error_code in (
'package-already-installed',
'all-packages-already-installed', None),
'Installation failed: %s (%s)',
resp.error_details, resp.error_code)
def cleanup_distro_version(version):
if ':' in version:
# Skip 'epoch'
version = version.split(':', 1)[1]
version = version.replace('_', '-')
if '~' in version:
version, suffix = version.split('~', 1)
if suffix.startswith('pre'):
suffix = suffix[3:]
suffix = '-pre' + (cleanup_distro_version(suffix) or '')
else:
suffix = ''
match = _VERSION_RE.match(version)
if match:
major, version, revision = match.groups()
if major is not None:
version = major[:-1].rstrip('.') + '.' + version
if revision is not None:
version = '%s-%s' % (version, revision[2:])
return version + suffix
return None
def _resolve(names):
result = {}
while names:
chunk = names[:min(len(names), _PK_MAX_RESOLVE)]
del names[:len(chunk)]
_logger.debug('Resolve %r', chunk)
resp = gbus.call(_pk, 'Resolve', 'none', chunk)
missed = set(chunk) - set(resp.packages.keys())
enforce(not missed, 'Failed to resolve %s', ', '.join(missed))
result.update(resp.packages)
return result
class _Response(object):
def __init__(self):
self.error_code = None
self.error_details = None
self.packages = {}
def _pk(result, op, *args):
import dbus
bus = dbus.SystemBus()
pk = dbus.Interface(
bus.get_object(
'org.freedesktop.PackageKit', '/org/freedesktop/PackageKit',
False),
'org.freedesktop.PackageKit')
txn = dbus.Interface(
bus.get_object('org.freedesktop.PackageKit', pk.GetTid(), False),
'org.freedesktop.PackageKit.Transaction')
resp = _Response()
signals = []
def Finished_cb(status, runtime):
_logger.debug('Transaction finished: %s', status)
for i in signals:
i.remove()
result.set(resp)
def ErrorCode_cb(code, details):
resp.error_code = code
resp.error_details = details
def Package_cb(status, pk_id, summary):
package_name, version, arch, __ = pk_id.split(';')
clean_version = cleanup_distro_version(version)
if not clean_version:
_logger.warn('Cannot parse distribution version "%s" '
'for package "%s"', version, package_name)
if package_name in resp.packages:
return
package = {
'pk_id': str(pk_id),
'version': clean_version,
'name': package_name,
'arch': _canonicalize_machine(arch),
'installed': (status == 'installed'),
}
_logger.debug('Found: %r', package)
resp.packages[package_name] = package
for signal, cb in [
('Finished', Finished_cb),
('ErrorCode', ErrorCode_cb),
('Package', Package_cb),
]:
signals.append(txn.connect_to_signal(signal, cb))
op = txn.get_dbus_method(op)
try:
op(*args)
except dbus.exceptions.DBusException, error:
if error.get_dbus_name() != \
'org.freedesktop.PackageKit.Transaction.RefusedByPolicy':
raise
iface, auth = error.get_dbus_message().split()
if not auth.startswith('auth_'):
raise
auth = dbus.SessionBus().get_object(
'org.freedesktop.PolicyKit.AuthenticationAgent', '/',
'org.freedesktop.PolicyKit.AuthenticationAgent')
auth.ObtainAuthorization(iface, dbus.UInt32(0),
dbus.UInt32(os.getpid()), timeout=300)
op(*args)
def _canonicalize_machine(arch):
arch = arch.lower()
if arch == 'x86':
return 'i386'
elif arch == 'amd64':
return 'x86_64'
elif arch == 'power macintosh':
return 'ppc'
elif arch == 'i86pc':
return 'i686'
_DOTTED_RE = r'[0-9]+(?:\.[0-9]+)*'
# Matche a version number that would be a valid version without modification
_RELEASE_RE = '(?:%s)(?:-(?:pre|rc|post|)(?:%s))*' % (_DOTTED_RE, _DOTTED_RE)
# This matches the interesting bits of distribution version numbers
# (first matching group is for Java-style 6b17 or 7u9 syntax, or "major")
_VERSION_RE = re.compile(
r'(?:[a-z])?({ints}\.?[bu])?({zero})(-r{ints})?'.format(
zero=_RELEASE_RE, ints=_DOTTED_RE))
if __name__ == '__main__':
import sys
from pprint import pprint
if len(sys.argv) == 1:
exit()
logging.basicConfig(level=logging.DEBUG)
if sys.argv[1] == 'install':
install(_resolve(sys.argv[2:]).values())
else:
pprint(_resolve(sys.argv[1:]))
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