# Copyright (c) 2005-2009 Canonical Ltd
#
# AUTHOR:
# Michael Vogt <mvo@ubuntu.com>
#
# This file is part of GDebi
#
# GDebi 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.
#
# GDebi 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 GDebi; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
import gettext
import logging
import os
import sys
from mimetypes import guess_type
import apt_pkg
from apt.cache import Cache
from .DebPackage import (
ClickPackage,
DebPackage,
)
if sys.version_info[0] == 3:
from gettext import gettext as _
def py3utf8(s):
return s
utf8 = py3utf8
unicode = str
else:
def _(str):
return utf8(gettext.gettext(str))
def py2utf8(str):
if isinstance(str, unicode):
return str
try:
return unicode(str, 'UTF-8')
except:
# assume latin1 as fallback
return unicode(str, 'latin1')
utf8 = py2utf8
class GDebiCommon(object):
# cprogress may be different in child classes
def __init__(self, datadir, options, file=""):
self.cprogress = None
self._cache = None
self.deps = ""
self.version_info_title = ""
self.version_info_msg = ""
self._deb = None
self._options = options
self.install = []
self.remove = []
self.unauthenticated = 0
def openCache(self):
self._cache = Cache(self.cprogress)
if self._cache._depcache.broken_count > 0:
self.error_header = _("Broken dependencies")
self.error_body = _("Your system has broken dependencies. "
"This application can not continue until "
"this is fixed. "
"To fix it run 'gksudo synaptic' or "
"'sudo apt-get install -f' "
"in a terminal window.")
return False
return True
def open(self, file, downloaded=False):
file = os.path.abspath(file)
klass = DebPackage
if file.endswith(".click"):
klass = ClickPackage
try:
self._deb = klass(file, self._cache, downloaded)
except (IOError, SystemError, ValueError) as e:
logging.debug("open failed with %s" % e)
mimetype=guess_type(file)
if (mimetype[0] != None and
mimetype[0] != "application/vnd.debian.binary-package"):
self.error_header = _("'%s' is not a Debian package") % os.path.basename(file)
self.error_body = _("The MIME type of this file is '%s' "
"and can not be installed on this system.") % mimetype[0]
return False
else:
self.error_header = _("Could not open '%s'") % os.path.basename(file)
self.error_body = _("The package might be corrupted or you are not "
"allowed to open the file. Check the permissions "
"of the file.")
return False
def compareDebWithCache(self):
# check if the package is available in the normal sources as well
res = self._deb.compare_to_version_in_cache(use_installed=False)
if not self._options.non_interactive and res != DebPackage.VERSION_NONE:
try:
pkg = self._cache[self._deb.pkgname]
except (KeyError, TypeError):
return
if self._deb.downloaded:
self.version_info_title = ""
self.version_info_msg = ""
return
# FIXME: make this strs better
if res == DebPackage.VERSION_SAME:
if pkg.candidate and pkg.candidate.downloadable:
self.version_info_title = _("Same version is available in a software channel")
self.version_info_msg = _("You are recommended to install the software "
"from the channel instead.")
elif res == DebPackage.VERSION_NEWER:
if pkg.candidate and pkg.candidate.downloadable:
self.version_info_title = _("An older version is available in a software channel")
self.version_info_msg = _("Generally you are recommended to install "
"the version from the software channel, since "
"it is usually better supported.")
elif res == DebPackage.VERSION_OUTDATED:
if pkg.candidate and pkg.candidate.downloadable:
self.version_info_title = _("A later version is available in a software "
"channel")
self.version_info_msg = _("You are strongly advised to install "
"the version from the software channel, since "
"it is usually better supported.")
def compareProvides(self):
provides = set()
broken_provides = set()
try:
pkg = self._cache[self._deb.pkgname].installed
except (KeyError, TypeError):
pkg = None
if pkg:
if pkg.provides:
for p in self._deb.provides:
for i in p:
provides.add(i[0])
provides = set(pkg.provides).difference(provides)
if provides:
for package in list(self._cache.keys()):
if self._cache[package].installed:
for dep in self._cache[package].installed.dependencies:
for d in dep.or_dependencies:
if d.name in provides:
broken_provides.add(d.name)
return broken_provides
def download_package(self):
dirname = os.path.abspath(os.path.dirname(self._deb.filename))
package = self._cache[self._deb.pkgname].candidate
pkgname = os.path.basename(package.filename)
if package.downloadable:
if not os.access(dirname, os.W_OK):
dirname = "/tmp"
if not os.path.exists(os.path.join(dirname, pkgname)):
package.fetch_binary(dirname)
self.open(os.path.join(dirname, pkgname), True)
return True
def get_changes(self):
(self.install, self.remove, self.unauthenticated) = self._deb.required_changes
self.deps = ""
if len(self.remove) == len(self.install) == 0:
self.deps = _("All dependencies are satisfied")
if len(self.remove) > 0:
# FIXME: use ngettext here
self.deps += _("Requires the <b>removal</b> of %s packages\n") % len(self.remove)
if len(self.install) > 0:
self.deps += _("Requires the installation of %s packages") % len(self.install)
return True
def try_acquire_lock(self):
" check if we can lock the apt database "
try:
apt_pkg.pkgsystem_lock()
except SystemError:
self.error_header = _("Only one software management tool is allowed to"
" run at the same time")
self.error_body = _("Please close the other application e.g. 'Update "
"Manager', 'aptitude' or 'Synaptic' first.")
return False
apt_pkg.pkgsystem_unlock()
return True
def acquire_lock(self):
" lock the pkgsystem for install "
# sanity check ( moved here )
if self._deb is None:
return False
# check if we can lock the apt database
try:
apt_pkg.pkgsystem_lock()
except SystemError:
self.error_header = _("Only one software management tool is allowed to"
" run at the same time")
self.error_body = _("Please close the other application e.g. 'Update "
"Manager', 'aptitude' or 'Synaptic' first.")
return False
return True
def release_lock(self):
" release the pkgsystem lock "
apt_pkg.pkgsystem_lock()
return True