Base runner, not working yet.

4 files changed, 2003 insertions, 0 deletions

diff --git a/src/pkBackend.py b/src/pkBackend.py
new file mode 100755
index 0000000..3ec1d2d
--- /dev/null
+++ b/src/pkBackend.py
@@ -0,0 +1,1889 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+# vim:set shiftwidth=4 tabstop=4 expandtab:
+#
+# Copyright (C) 2009 Mounir Lamouri (volkmar) <mounir.lamouri@gmail.com>
+#
+# Licensed under the GNU General Public License Version 2
+#
+# 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.
+
+# packagekit imports
+from packagekit.backend import *
+from packagekit.progress import *
+from packagekit.package import PackagekitPackage
+
+# portage imports
+import portage
+import portage.versions
+import portage.dep
+import _emerge.actions
+import _emerge.stdout_spinner
+import _emerge.create_depgraph_params
+import _emerge.AtomArg
+
+# layman imports
+import layman.db
+import layman.config
+
+# misc imports
+import sys
+import signal
+import re
+from itertools import izip
+
+# NOTES:
+#
+# Package IDs description:
+# CAT/PN;PV;KEYWORD;[REPOSITORY|installed]
+# Last field must be "installed" if installed. Otherwise it's the repo name
+#
+# Naming convention:
+# cpv: category package version, the standard representation of what packagekit
+#   names a package (an ebuild for portage)
+
+# TODO:
+# remove percentage(None) if percentage is used
+# protection against signal when installing/removing
+
+# Map Gentoo categories to the PackageKit group name space
+class PortagePackageGroups(dict):
+    """
+    Portage Package categories group representation
+    """
+    def __init__(self):
+        dict.__init__(self)
+
+        data = {
+            'accessibility': {
+                'name': "Accessibility",
+                'description': "Accessibility applications",
+                'categories': ['app-accessibility'],
+            },
+            'office': {
+                'name': "Office",
+                'description': "Applications used in office environments",
+                'categories': ['app-office', 'app-pda', 'app-mobilephone',
+                    'app-cdr', 'app-antivirus', 'app-laptop', 'mail-',
+                ],
+            },
+            'development': {
+                'name': "Development",
+                'description': "Applications or system libraries",
+                'categories': ['dev-', 'sys-devel'],
+            },
+            'system': {
+                'name': "System",
+                'description': "System applications or libraries",
+                'categories': ['sys-'],
+            },
+            'games': {
+                'name': "Games",
+                'description': "Games, enjoy your spare time",
+                'categories': ['games-'],
+            },
+            'gnome': {
+                'name': "GNOME Desktop",
+                'description': \
+                    "Applications and libraries for the GNOME Desktop",
+                'categories': ['gnome-'],
+            },
+            'kde': {
+                'name': "KDE Desktop",
+                'description': \
+                    "Applications and libraries for the KDE Desktop",
+                'categories': ['kde-'],
+            },
+            'xfce': {
+                'name': "XFCE Desktop",
+                'description': \
+                    "Applications and libraries for the XFCE Desktop",
+                'categories': ['xfce-'],
+            },
+            'lxde': {
+                'name': "LXDE Desktop",
+                'description': \
+                    "Applications and libraries for the LXDE Desktop",
+                'categories': ['lxde-'],
+            },
+            'multimedia': {
+                'name': "Multimedia",
+                'description': \
+                    "Applications and libraries for Multimedia",
+                'categories': ['media-'],
+            },
+            'networking': {
+                'name': "Networking",
+                'description': \
+                    "Applications and libraries for Networking",
+                'categories': ['net-', 'www-'],
+            },
+            'science': {
+                'name': "Science",
+                'description': \
+                    "Scientific applications and libraries",
+                'categories': ['sci-'],
+            },
+            'security': {
+                'name': "Security",
+                'description': \
+                    "Security orientend applications",
+                'categories': ['app-antivirus', 'net-analyzer', 'net-firewall'],
+            },
+            'x11': {
+                'name': "X11",
+                'description': \
+                    "Applications and libraries for X11",
+                'categories': ['x11-'],
+            },
+        }
+
+        self.update(data)
+
+
+class PortageBridge():
+    '''
+    Bridge to portage/emerge settings and variabales to help using them
+    and be sure they are always up-to-date.
+    '''
+
+    def __init__(self):
+        self.settings = None
+        self.trees = None
+        self.mtimedb = None
+        self.vardb = None
+        self.portdb = None
+        self.root_config = None
+
+        self.update()
+
+    def update(self):
+        self.settings, self.trees, self.mtimedb = \
+                _emerge.actions.load_emerge_config()
+        self.vardb = self.trees[self.settings['ROOT']]['vartree'].dbapi
+        self.portdb = self.trees[self.settings['ROOT']]['porttree'].dbapi
+        self.root_config = self.trees[self.settings['ROOT']]['root_config']
+
+        # doing all the changes to settings
+        self.settings.unlock()
+
+        # we don't want interactive ebuilds
+        self.settings["ACCEPT_PROPERTIES"] = "-interactive"
+        self.settings.backup_changes("ACCEPT_PROPERTIES")
+
+        # do not log with mod_echo (cleanly prevent some outputs)
+        def filter_echo(x): return x != 'echo'
+        elogs = self.settings["PORTAGE_ELOG_SYSTEM"].split()
+        elogs = filter(filter_echo, elogs)
+        self.settings["PORTAGE_ELOG_SYSTEM"] = ' '.join(elogs)
+        self.settings.backup_changes("PORTAGE_ELOG_SYSTEM")
+
+        # finally, regenerate settings and lock them again
+        self.settings.regenerate()
+        self.settings.lock()
+
+
+class PackageKitPortageMixin(object):
+
+    def __init__(self):
+        object.__init__(self)
+
+        self.pvar = PortageBridge()
+        # TODO: should be removed when using non-verbose function API
+        # FIXME: avoid using /dev/null, dangerous (ro fs)
+        self._dev_null = open('/dev/null', 'w')
+        # TODO: atm, this stack keep tracks of elog messages
+        self._elog_messages = []
+        self._error_message = ""
+        self._error_phase = ""
+
+    # TODO: should be removed when using non-verbose function API
+    def _block_output(self):
+        sys.stdout = self._dev_null
+        sys.stderr = self._dev_null
+
+    # TODO: should be removed when using non-verbose function API
+    def _unblock_output(self):
+        sys.stdout = sys.__stdout__
+        sys.stderr = sys.__stderr__
+
+    def _is_repo_enabled(self, layman_db, repo_name):
+        if repo_name in layman_db.overlays.keys():
+            return True
+        return False
+
+    def _get_search_list(self, keys_list):
+        '''
+        Get a string composed of keys (separated with spaces).
+        Returns a list of compiled regular expressions.
+        '''
+        search_list = []
+
+        for k in keys_list:
+            # not done entirely by pk-transaction
+            k = re.escape(k)
+            search_list.append(re.compile(k, re.IGNORECASE))
+
+        return search_list
+
+    def _get_portage_categories(self):
+        """
+        Return a list of available Portage categories
+        """
+        return self.pvar.settings.categories
+
+    def _get_portage_category_description(self, category):
+
+        from xml.dom import minidom
+        data = {}
+        portdir = self.pvar.settings['PORTDIR']
+        myfile = os.path.join(portdir, category, "metadata.xml")
+        if os.access(myfile, os.R_OK) and os.path.isfile(myfile):
+            doc = minidom.parse(myfile)
+            longdescs = doc.getElementsByTagName("longdescription")
+            for longdesc in longdescs:
+                data[longdesc.getAttribute("lang").strip()] = \
+                    ' '.join([x.strip() for x in \
+                        longdesc.firstChild.data.strip().split("\n")])
+
+        # Only return in plain English since Portage doesn't support i18n/l10n
+        return data.get('en', "No description")
+
+    def _get_portage_groups(self):
+        """
+        Return an expanded version of PortagePackageGroups
+        """
+        groups = PortagePackageGroups()
+        categories = self._get_portage_categories()
+
+        # expand categories
+        for data in list(groups.values()):
+
+            exp_cats = set()
+            for g_cat in data['categories']:
+                exp_cats.update([x for x in categories if x.startswith(g_cat)])
+            data['categories'] = sorted(exp_cats)
+
+        return groups
+
+    def _get_pk_group(self, cp):
+        """
+        Return PackageKit group belonging to given Portage package.
+        """
+        category = portage.versions.catsplit(cp)[0]
+        group_data = [key for key, data in self._get_portage_groups().items() \
+            if category in data['categories']]
+        try:
+            generic_group_name = group_data.pop(0)
+        except IndexError:
+            return GROUP_UNKNOWN
+
+        return PackageKitPortageBackend.GROUP_MAP[generic_group_name]
+
+    def _get_portage_group(self, pk_group):
+        """
+        Given a PackageKit group identifier, return Portage packages group.
+        """
+        group_map = PackageKitPortageBackend.GROUP_MAP
+        # reverse dict
+        group_map_reverse = dict((y, x) for x, y in group_map.items())
+        return group_map_reverse.get(pk_group, 'unknown')
+
+    def _get_ebuild_settings(self, cpv, metadata):
+        """
+        Return values of given metadata keys for given Portage CPV.
+        """
+        settings = portage.config(clone=self.pvar.settings)
+        settings.setcpv(cpv, mydb=metadata)
+        return settings
+
+    def _is_installed(self, cpv):
+        if self.pvar.vardb.cpv_exists(cpv):
+            return True
+        return False
+
+    def _is_cpv_valid(self, cpv):
+        if self._is_installed(cpv):
+            # actually if is_installed return True that means cpv is in db
+            return True
+        elif self.pvar.portdb.cpv_exists(cpv):
+            return True
+
+        return False
+
+    def _get_real_license_str(self, cpv, metadata):
+        # use conditionals info (w/ USE) in LICENSE and remove ||
+        ebuild_settings = self._get_ebuild_settings(cpv, metadata)
+        license = set(portage.flatten(portage.dep.use_reduce(
+            portage.dep.paren_reduce(metadata["LICENSE"]),
+            uselist=ebuild_settings.get("USE", "").split())))
+        license.discard('||')
+        license = ' '.join(license)
+
+        return license
+
+    def _signal_config_update(self):
+        result = list(portage.util.find_updated_config_files(
+            self.pvar.settings['ROOT'],
+            self.pvar.settings.get('CONFIG_PROTECT', '').split()))
+
+        if result:
+            message = "Some configuration files need updating."
+            message += ";You should use Gentoo's tools to update them (dispatch-conf)"
+            message += ";If you can't do that, ask your system administrator."
+            self.message(MESSAGE_CONFIG_FILES_CHANGED, message)
+
+    def _get_restricted_fetch_files(self, cpv, metadata):
+        '''
+        This function checks files in SRC_URI and look if they are in DESTDIR.
+        Missing files are returned. If there is no issue, None is returned.
+        We don't care about digest but only about existance of files.
+
+        NOTES:
+        - we are assuming the package has RESTRICT='fetch'
+          be sure to call this function only in this case.
+        - we are not using fetch_check because it's not returning missing files
+          so this function is a simplist fetch_check
+        '''
+        missing_files = []
+        ebuild_settings = self._get_ebuild_settings(cpv, metadata)
+
+        files = self.pvar.portdb.getFetchMap(cpv,
+                ebuild_settings['USE'].split())
+
+        for f in files:
+            file_path = os.path.join(ebuild_settings["DISTDIR"], f)
+            if not os.access(file_path, os.F_OK):
+                missing_files.append([file_path, files[f]])
+
+        if len(missing_files) > 0:
+            return missing_files
+
+        return None
+
+    def _check_fetch_restrict(self, packages_list):
+        for p in packages_list:
+            if 'fetch' in p.metadata['RESTRICT']:
+                files = self._get_restricted_fetch_files(p.cpv, p.metadata)
+                if files:
+                    message = "Package %s can't download some files." % p.cpv
+                    message += ";Please, download manually the followonig file(s):"
+                    for x in files:
+                        message += ";- %s then copy it to %s" % (' '.join(x[1]), x[0])
+                    self.error(ERROR_RESTRICTED_DOWNLOAD, message)
+
+    def _elog_listener(self, settings, key, logentries, fulltext):
+        '''
+        This is a listener for elog.
+        It's called each time elog is emitting log messages (at end of process).
+        We are not using settings and fulltext but they are used by other
+        listeners so we have to keep them as arguments.
+        '''
+        message = "Messages for package %s:;" % str(key)
+        error_message = ""
+
+        # building the message
+        for phase in logentries:
+            for entries in logentries[phase]:
+                type = entries[0]
+                messages = entries[1]
+
+                # TODO: portage.elog.filtering is using upper() should we ?
+                if type == 'LOG':
+                    message += ";Information messages:"
+                elif type == 'WARN':
+                    message += ";Warning messages:"
+                elif type == 'QA':
+                    message += ";QA messages:"
+                elif type == 'ERROR':
+                    message += ";Error messages:"
+                    self._error_phase = phase
+                else:
+                    continue
+
+                for msg in messages:
+                    msg = msg.replace('\n', '')
+                    if type == 'ERROR':
+                        error_message += msg + ";"
+                    message += "; " + msg
+
+        # add the message to the stack
+        self._elog_messages.append(message)
+        self._error_message = message
+
+    def _send_merge_error(self, default):
+        # EAPI-2 compliant (at least)
+        # 'other' phase is ignored except this one, every phase should be there
+        if self._error_phase in ("setup", "unpack", "prepare", "configure",
+            "nofetch", "config", "info"):
+            error_type = ERROR_PACKAGE_FAILED_TO_CONFIGURE
+        elif self._error_phase in ("compile", "test"):
+            error_type = ERROR_PACKAGE_FAILED_TO_BUILD
+        elif self._error_phase in ("install", "preinst", "postinst",
+            "package"):
+            error_type = ERROR_PACKAGE_FAILED_TO_INSTALL
+        elif self._error_phase in ("prerm", "postrm"):
+            error_type = ERROR_PACKAGE_FAILED_TO_REMOVE
+        else:
+            error_type = default
+
+        self.error(error_type, self._error_message)
+
+    def _get_file_list(self, cpv):
+        cat, pv = portage.versions.catsplit(cpv)
+        db = portage.dblink(cat, pv, self.pvar.settings['ROOT'],
+                self.pvar.settings, treetype="vartree",
+                vartree=self.pvar.vardb)
+
+        contents = db.getcontents()
+        if not contents:
+            return []
+
+        return db.getcontents().keys()
+
+    def _cmp_cpv(self, cpv1, cpv2):
+        '''
+        returns 1 if cpv1 > cpv2
+        returns 0 if cpv1 = cpv2
+        returns -1 if cpv1 < cpv2
+        '''
+        return portage.versions.pkgcmp(portage.versions.pkgsplit(cpv1),
+            portage.versions.pkgsplit(cpv2))
+
+    def _get_newest_cpv(self, cpv_list, installed):
+        newer = ""
+
+        # get the first cpv following the installed rule
+        for cpv in cpv_list:
+            if self._is_installed(cpv) == installed:
+                newer = cpv
+                break
+
+        if newer == "":
+            return ""
+
+        for cpv in cpv_list:
+            if self._is_installed(cpv) == installed:
+                if self._cmp_cpv(cpv, newer) == 1:
+                    newer = cpv
+
+        return newer
+
+    def _get_metadata(self, cpv, keys, in_dict = False, add_cache_keys = False):
+        '''
+        This function returns required metadata.
+        If in_dict is True, metadata is returned in a dict object.
+        If add_cache_keys is True, cached keys are added to keys in parameter.
+        '''
+        if self._is_installed(cpv):
+            aux_get = self.pvar.vardb.aux_get
+            if add_cache_keys:
+                keys.extend(list(self.pvar.vardb._aux_cache_keys))
+        else:
+            aux_get = self.pvar.portdb.aux_get
+            if add_cache_keys:
+                keys.extend(list(self.pvar.portdb._aux_cache_keys))
+
+        if in_dict:
+            return dict(izip(keys, aux_get(cpv, keys)))
+        else:
+            return aux_get(cpv, keys)
+
+    def _get_size(self, cpv):
+        '''
+        Returns the installed size if the package is installed.
+        Otherwise, the size of files needed to be downloaded.
+        If some required files have been downloaded,
+        only the remaining size will be considered.
+        '''
+        size = 0
+        if self._is_installed(cpv):
+            size = self._get_metadata(cpv, ["SIZE"])[0]
+            if size == '':
+                size = 0
+            else:
+                size = int(size)
+        else:
+            self
+            metadata = self._get_metadata(cpv, ["IUSE", "SLOT"], in_dict=True)
+
+            package = _emerge.Package.Package(
+                    type_name="ebuild",
+                    built=False,
+                    installed=False,
+                    root_config=self.pvar.root_config,
+                    cpv=cpv,
+                    metadata=metadata)
+
+            fetch_file = self.pvar.portdb.getfetchsizes(package[2],
+                    package.use.enabled)
+            for f in fetch_file:
+                size += fetch_file[f]
+
+        return size
+
+    def _get_cpv_slotted(self, cpv_list):
+        cpv_dict = {}
+
+        for cpv in cpv_list:
+            slot = self._get_metadata(cpv, ["SLOT"])[0]
+            if slot not in cpv_dict:
+                cpv_dict[slot] = [cpv]
+            else:
+                cpv_dict[slot].append(cpv)
+
+        return cpv_dict
+
+    def _filter_free(self, cpv_list, fltlist):
+        if not cpv_list:
+            return cpv_list
+
+        def _has_validLicense(cpv):
+            metadata = self._get_metadata(cpv, ["LICENSE", "USE", "SLOT"], True)
+            return not self.pvar.settings._getMissingLicenses(cpv, metadata)
+
+        if FILTER_FREE in fltlist or FILTER_NOT_FREE in fltlist:
+            free_licenses = "@FSF-APPROVED"
+            if FILTER_FREE in fltlist:
+                licenses = "-* " + free_licenses
+            elif FILTER_NOT_FREE in fltlist:
+                licenses = "* -" + free_licenses
+            backup_license = self.pvar.settings["ACCEPT_LICENSE"]
+
+            self.pvar.settings.unlock()
+            self.pvar.settings["ACCEPT_LICENSE"] = licenses
+            self.pvar.settings.backup_changes("ACCEPT_LICENSE")
+            self.pvar.settings.regenerate()
+
+            cpv_list = filter(_has_validLicense, cpv_list)
+
+            self.pvar.settings["ACCEPT_LICENSE"] = backup_license
+            self.pvar.settings.backup_changes("ACCEPT_LICENSE")
+            self.pvar.settings.regenerate()
+            self.pvar.settings.lock()
+
+        return cpv_list
+
+    def _filter_newest(self, cpv_list, fltlist):
+        if len(cpv_list) == 0:
+            return cpv_list
+
+        if FILTER_NEWEST not in fltlist:
+            return cpv_list
+
+        if FILTER_INSTALLED in fltlist:
+            # we have one package per slot, so it's the newest
+            return cpv_list
+
+        cpv_dict = self._get_cpv_slotted(cpv_list)
+
+        # slots are sorted (dict), revert them to have newest slots first
+        slots = cpv_dict.keys()
+        slots.reverse()
+
+        # empty cpv_list, cpv are now in cpv_dict and cpv_list gonna be repop
+        cpv_list = []
+
+        for k in slots:
+            # if not_intalled on, no need to check for newest installed
+            if FILTER_NOT_INSTALLED not in fltlist:
+                newest_installed = self._get_newest_cpv(cpv_dict[k], True)
+                if newest_installed != "":
+                    cpv_list.append(newest_installed)
+            newest_available = self._get_newest_cpv(cpv_dict[k], False)
+            if newest_available != "":
+                cpv_list.append(newest_available)
+
+        return cpv_list
+
+    def _get_all_cp(self, fltlist):
+        # NOTES:
+        # returns a list of cp
+        #
+        # FILTERS:
+        # - installed: ok
+        # - free: ok (should be done with cpv)
+        # - newest: ok (should be finished with cpv)
+        cp_list = []
+
+        if FILTER_INSTALLED in fltlist:
+            cp_list = self.pvar.vardb.cp_all()
+        elif FILTER_NOT_INSTALLED in fltlist:
+            cp_list = self.pvar.portdb.cp_all()
+        else:
+            # need installed packages first
+            cp_list = self.pvar.vardb.cp_all()
+            for cp in self.pvar.portdb.cp_all():
+                if cp not in cp_list:
+                    cp_list.append(cp)
+
+        return cp_list
+
+    def _get_all_cpv(self, cp, fltlist, filter_newest=True):
+        # NOTES:
+        # returns a list of cpv
+        #
+        # FILTERS:
+        # - installed: ok
+        # - free: ok
+        # - newest: ok
+
+        cpv_list = []
+
+        # populate cpv_list taking care of installed filter
+        if FILTER_INSTALLED in fltlist:
+            cpv_list = self.pvar.vardb.match(cp)
+        elif FILTER_NOT_INSTALLED in fltlist:
+            for cpv in self.pvar.portdb.match(cp):
+                if not self._is_installed(cpv):
+                    cpv_list.append(cpv)
+        else:
+            cpv_list = self.pvar.vardb.match(cp)
+            for cpv in self.pvar.portdb.match(cp):
+                if cpv not in cpv_list:
+                    cpv_list.append(cpv)
+
+        # free filter
+        cpv_list = self._filter_free(cpv_list, fltlist)
+
+        # newest filter
+        if filter_newest:
+            cpv_list = self._filter_newest(cpv_list, fltlist)
+
+        return cpv_list
+
+    def _id_to_cpv(self, pkgid):
+        '''
+        Transform the package id (packagekit) to a cpv (portage)
+        '''
+        ret = split_package_id(pkgid)
+
+        if len(ret) < 4:
+            self.error(ERROR_PACKAGE_ID_INVALID,
+                    "The package id %s does not contain 4 fields" % pkgid)
+        if '/' not in ret[0]:
+            self.error(ERROR_PACKAGE_ID_INVALID,
+                    "The first field of the package id must contain a category")
+
+        # remove slot info from version field
+        version = ret[1].split(':')[0]
+
+        return ret[0] + "-" + version
+
+    def _cpv_to_id(self, cpv):
+        '''
+        Transform the cpv (portage) to a package id (packagekit)
+        '''
+        package, version, rev = portage.versions.pkgsplit(cpv)
+        pkg_keywords, repo, slot = self._get_metadata(cpv,
+                ["KEYWORDS", "repository", "SLOT"])
+
+        pkg_keywords = pkg_keywords.split()
+        sys_keywords = self.pvar.settings["ACCEPT_KEYWORDS"].split()
+        keywords = []
+
+        for x in sys_keywords:
+            if x in pkg_keywords:
+                keywords.append(x)
+
+        # if no keywords, check in package.keywords
+        if not keywords:
+            key_dict = self.pvar.settings.pkeywordsdict.get(
+                    portage.dep.dep_getkey(cpv))
+            if key_dict:
+                for _, keys in key_dict.iteritems():
+                    for x in keys:
+                        keywords.append(x)
+
+        if not keywords:
+            keywords.append("no keywords")
+            self.message(MESSAGE_UNKNOWN,
+                "No keywords have been found for %s" % cpv)
+
+        # don't want to see -r0
+        if rev != "r0":
+            version = version + "-" + rev
+        # add slot info if slot != 0
+        if slot != '0':
+            version = version + ':' + slot
+
+        # if installed, repo should be 'installed', packagekit rule
+        if self._is_installed(cpv):
+            repo = "installed"
+
+        return get_package_id(package, version, ' '.join(keywords), repo)
+
+    def _get_required_packages(self, cpv_input, recursive):
+        '''
+        Get a list of cpv and recursive parameter.
+        Returns the list of packages required for cpv list.
+        '''
+        packages_list = []
+
+        myopts = {}
+        myopts["--selective"] = True
+        myopts["--deep"] = True
+
+        myparams = _emerge.create_depgraph_params.create_depgraph_params(
+                myopts, "remove")
+        depgraph = _emerge.depgraph.depgraph(self.pvar.settings,
+                self.pvar.trees, myopts, myparams, None)
+
+        # TODO: atm, using FILTER_INSTALLED because it's quicker
+        # and we don't want to manage non-installed packages
+        for cp in self._get_all_cp([FILTER_INSTALLED]):
+            for cpv in self._get_all_cpv(cp, [FILTER_INSTALLED]):
+                depgraph._dynamic_config._dep_stack.append(
+                        _emerge.Dependency.Dependency(
+                            atom=portage.dep.Atom('=' + cpv),
+                            root=self.pvar.settings["ROOT"], parent=None))
+
+        if not depgraph._complete_graph():
+            self.error(ERROR_INTERNAL_ERROR, "Error when generating depgraph")
+            return
+
+        def _add_children_to_list(packages_list, node):
+            for n in depgraph._dynamic_config.digraph.parent_nodes(node):
+                if n not in packages_list \
+                        and not isinstance(n, _emerge.SetArg.SetArg):
+                    packages_list.append(n)
+                    _add_children_to_list(packages_list, n)
+
+        for node in depgraph._dynamic_config.digraph.__iter__():
+            if isinstance(node, _emerge.SetArg.SetArg):
+                continue
+            if node.cpv in cpv_input:
+                if recursive:
+                    _add_children_to_list(packages_list, node)
+                else:
+                    for n in \
+                            depgraph._dynamic_config.digraph.parent_nodes(node):
+                        if not isinstance(n, _emerge.SetArg.SetArg):
+                            packages_list.append(n)
+
+        # remove cpv_input that may be added to the list
+        def filter_cpv_input(x): return x.cpv not in cpv_input
+        return filter(filter_cpv_input, packages_list)
+
+
+class PackageKitPortageBackend(PackageKitPortageMixin, PackageKitPortageBase):
+
+    # Portage <-> PackageKit groups map
+    GROUP_MAP = {
+        'accessibility': GROUP_ACCESSIBILITY,
+        'development': GROUP_PROGRAMMING,
+        'games': GROUP_GAMES,
+        'gnome': GROUP_DESKTOP_GNOME,
+        'kde': GROUP_DESKTOP_KDE,
+        'lxde': GROUP_DESKTOP_OTHER,
+        'multimedia': GROUP_MULTIMEDIA,
+        'networking': GROUP_NETWORK,
+        'office': GROUP_OFFICE,
+        'science': GROUP_SCIENCE,
+        'system': GROUP_SYSTEM,
+        'security': GROUP_SECURITY,
+        'x11': GROUP_OTHER,
+        'xfce': GROUP_DESKTOP_XFCE,
+        'unknown': GROUP_UNKNOWN,
+    }
+
+    def __sigquit(self, signum, frame):
+        raise SystemExit(1)
+
+    def __init__(self, args):
+        signal.signal(signal.SIGQUIT, self.__sigquit)
+        PackageKitPortageMixin.__init__(self)
+        PackageKitBaseBackend.__init__(self, args)
+
+    def _package(self, cpv, info=None):
+        desc = self._get_metadata(cpv, ["DESCRIPTION"])[0]
+        if not info:
+            if self._is_installed(cpv):
+                info = INFO_INSTALLED
+            else:
+                info = INFO_AVAILABLE
+        self.package(self._cpv_to_id(cpv), info, desc)
+
+    def get_categories(self):
+
+        self.status(STATUS_QUERY)
+        self.allow_cancel(True)
+
+        categories = self._get_portage_categories()
+        if not categories:
+            self.error(ERROR_GROUP_LIST_INVALID, "no package categories")
+            return
+
+        for name in categories:
+
+            summary = self._get_portage_category_description(name)
+
+            f_name = "/usr/share/pixmaps/portage/%s.png" % (name,)
+            if os.path.isfile(f_name) and os.access(f_name, os.R_OK):
+                icon = name
+            else:
+                icon = "image-missing"
+
+            cat_id = name # same thing
+            self.category("", cat_id, name, summary, icon)
+
+    def get_depends(self, filters, pkgs, recursive):
+        # TODO: use only myparams ?
+        # TODO: improve error management / info
+
+        # FILTERS:
+        # - installed: ok
+        # - free: ok
+        # - newest: ignored because only one version of a package is installed
+
+        self.status(STATUS_INFO)
+        self.allow_cancel(True)
+        self.percentage(None)
+
+        fltlist = filters.split(';')
+
+        cpv_input = []
+        cpv_list = []
+
+        for pkg in pkgs:
+            cpv = self._id_to_cpv(pkg)
+            if not self._is_cpv_valid(cpv):
+                self.error(ERROR_PACKAGE_NOT_FOUND,
+                        "Package %s was not found" % pkg)
+                continue
+            cpv_input.append('=' + cpv)
+
+        myopts = {}
+        myopts["--selective"] = True
+        myopts["--deep"] = True
+        myparams = _emerge.create_depgraph_params.create_depgraph_params(
+                myopts, "")
+
+        depgraph = _emerge.depgraph.depgraph(
+                self.pvar.settings, self.pvar.trees, myopts, myparams, None)
+        retval, fav = depgraph.select_files(cpv_input)
+
+        if not retval:
+            self.error(ERROR_DEP_RESOLUTION_FAILED,
+                    "Wasn't able to get dependency graph")
+            return
+
+        def _add_children_to_list(cpv_list, node):
+            for n in depgraph._dynamic_config.digraph.child_nodes(node):
+                if n not in cpv_list:
+                    cpv_list.append(n)
+                    _add_children_to_list(cpv_list, n)
+
+        for cpv in cpv_input:
+            for r in depgraph._dynamic_config.digraph.root_nodes():
+                # TODO: remove things with @ as first char
+                # TODO: or refuse SetArgs
+                if not isinstance(r, _emerge.AtomArg.AtomArg):
+                    continue
+                if r.atom == cpv:
+                    if recursive:
+                        _add_children_to_list(cpv_list, r)
+                    else:
+                        for n in \
+                                depgraph._dynamic_config.digraph.child_nodes(r):
+                            for c in \
+                                depgraph._dynamic_config.digraph.child_nodes(n):
+                                cpv_list.append(c)
+
+        def _filter_uninstall(cpv):
+            return cpv[3] != 'uninstall'
+        def _filter_installed(cpv):
+            return cpv[0] == 'installed'
+        def _filter_not_installed(cpv):
+            return cpv[0] != 'installed'
+
+        # removing packages going to be uninstalled
+        cpv_list = filter(_filter_uninstall, cpv_list)
+
+        # install filter
+        if FILTER_INSTALLED in fltlist:
+            cpv_list = filter(_filter_installed, cpv_list)
+        if FILTER_NOT_INSTALLED in fltlist:
+            cpv_list = filter(_filter_not_installed, cpv_list)
+
+        # now we can change cpv_list to a real cpv list
+        tmp_list = cpv_list[:]
+        cpv_list = []
+        for x in tmp_list:
+            cpv_list.append(x[2])
+        del tmp_list
+
+        # free filter
+        cpv_list = self._filter_free(cpv_list, fltlist)
+
+        for cpv in cpv_list:
+            # prevent showing input packages
+            if '=' + cpv not in cpv_input:
+                self._package(cpv)
+
+    def get_details(self, pkgs):
+        self.status(STATUS_INFO)
+        self.allow_cancel(True)
+        self.percentage(0)
+
+        nb_pkg = float(len(pkgs))
+        pkg_processed = 0.0
+
+        for pkg in pkgs:
+            cpv = self._id_to_cpv(pkg)
+
+            if not self._is_cpv_valid(cpv):
+                self.error(ERROR_PACKAGE_NOT_FOUND,
+                        "Package %s was not found" % pkg)
+                continue
+
+            metadata = self._get_metadata(cpv,
+                    ["DESCRIPTION", "HOMEPAGE", "IUSE", "LICENSE", "SLOT"],
+                    in_dict=True)
+            license = self._get_real_license_str(cpv, metadata)
+
+            self.details(self._cpv_to_id(cpv), license,
+                self._get_pk_group(cpv),
+                metadata["DESCRIPTION"], metadata["HOMEPAGE"],
+                self._get_size(cpv))
+
+            pkg_processed += 100.0
+            self.percentage(int(pkg_processed/nb_pkg))
+
+        self.percentage(100)
+
+    def get_files(self, pkgs):
+        self.status(STATUS_INFO)
+        self.allow_cancel(True)
+        self.percentage(0)
+
+        nb_pkg = float(len(pkgs))
+        pkg_processed = 0.0
+
+        for pkg in pkgs:
+            cpv = self._id_to_cpv(pkg)
+
+            if not self._is_cpv_valid(cpv):
+                self.error(ERROR_PACKAGE_NOT_FOUND,
+                        "Package %s was not found" % pkg)
+                continue
+
+            if not self._is_installed(cpv):
+                self.error(ERROR_CANNOT_GET_FILELIST,
+                        "get-files is only available for installed packages")
+                continue
+
+            files = self._get_file_list(cpv)
+            files = sorted(files)
+            files = ";".join(files)
+
+            self.files(pkg, files)
+
+            pkg_processed += 100.0
+            self.percentage(int(pkg_processed/nb_pkg))
+
+        self.percentage(100)
+
+    def get_packages(self, filters):
+        self.status(STATUS_QUERY)
+        self.allow_cancel(True)
+        self.percentage(0)
+
+        fltlist = filters.split(';')
+        cp_list = self._get_all_cp(fltlist)
+        nb_cp = float(len(cp_list))
+        cp_processed = 0.0
+
+        for cp in self._get_all_cp(fltlist):
+            for cpv in self._get_all_cpv(cp, fltlist):
+                self._package(cpv)
+
+            cp_processed += 100.0
+            self.percentage(int(cp_processed/nb_cp))
+
+        self.percentage(100)
+
+    def get_repo_list(self, filters):
+        # NOTES:
+        # use layman API
+        # returns only official and supported repositories
+        # and creates a dummy repo for portage tree
+        self.status(STATUS_INFO)
+        self.allow_cancel(True)
+        self.percentage(None)
+
+        fltlist = filters.split(';')
+
+        # get installed and available dbs
+        installed_layman_db = layman.db.DB(layman.config.Config())
+        available_layman_db = layman.db.RemoteDB(layman.config.Config())
+
+        # 'gentoo' is a dummy repo
+        self.repo_detail('gentoo', 'Gentoo Portage tree', True)
+
+        if FILTER_NOT_DEVELOPMENT not in fltlist:
+            for o in available_layman_db.overlays.keys():
+                if available_layman_db.overlays[o].is_official() \
+                        and available_layman_db.overlays[o].is_supported():
+                    self.repo_detail(o, o,
+                            self._is_repo_enabled(installed_layman_db, o))
+
+    def get_requires(self, filters, pkgs, recursive):
+        # TODO: manage non-installed package
+
+        # FILTERS:
+        # - installed: error atm, see previous TODO
+        # - free: ok
+        # - newest: ignored because only one version of a package is installed
+
+        self.status(STATUS_RUNNING)
+        self.allow_cancel(True)
+        self.percentage(None)
+
+        fltlist = filters.split(';')
+
+        cpv_input = []
+        cpv_list = []
+
+        if FILTER_NOT_INSTALLED in fltlist:
+            self.error(ERROR_CANNOT_GET_REQUIRES,
+                    "get-requires returns only installed packages at the moment")
+            return
+
+        for pkg in pkgs:
+            cpv = self._id_to_cpv(pkg)
+
+            if not self._is_cpv_valid(cpv):
+                self.error(ERROR_PACKAGE_NOT_FOUND,
+                        "Package %s was not found" % pkg)
+                continue
+            if not self._is_installed(cpv):
+                self.error(ERROR_CANNOT_GET_REQUIRES,
+                        "get-requires is only available for installed packages at the moment")
+                continue
+
+            cpv_input.append(cpv)
+
+        packages_list = self._get_required_packages(cpv_input, recursive)
+
+        # now we can populate cpv_list
+        cpv_list = []
+        for p in packages_list:
+            cpv_list.append(p.cpv)
+        del packages_list
+
+        # free filter
+        cpv_list = self._filter_free(cpv_list, fltlist)
+
+        for cpv in cpv_list:
+            # prevent showing input packages
+            if '=' + cpv not in cpv_input:
+                self._package(cpv)
+
+    def get_update_detail(self, pkgs):
+        # TODO: a lot of informations are missing
+
+        self.status(STATUS_INFO)
+        self.allow_cancel(True)
+        self.percentage(None)
+
+        for pkg in pkgs:
+            updates = []
+            obsoletes = ""
+            vendor_url = ""
+            bugzilla_url = ""
+            cve_url = ""
+
+            cpv = self._id_to_cpv(pkg)
+
+            if not self.pvar.portdb.cpv_exists(cpv):
+                self.message(MESSAGE_COULD_NOT_FIND_PACKAGE, "could not find %s" % pkg)
+
+            for cpv in self.pvar.vardb.match(portage.versions.pkgsplit(cpv)[0]):
+                updates.append(cpv)
+            updates = "&".join(updates)
+
+            # temporarily set vendor_url = homepage
+            homepage = self._get_metadata(cpv, ["HOMEPAGE"])[0]
+            vendor_url = homepage
+            issued = ""
+            updated = ""
+
+            self.update_detail(pkg, updates, obsoletes, vendor_url, bugzilla_url,
+                    cve_url, "none", "No update text", "No ChangeLog",
+                    UPDATE_STATE_STABLE, issued, updated)
+
+    def get_updates(self, filters):
+        # NOTES:
+        # because of a lot of things related to Gentoo,
+        # only world and system packages are can be listed as updates
+        # _except_ for security updates
+
+        # UPDATE TYPES:
+        # - blocked: wait for feedbacks
+        # - low: TODO: --newuse
+        # - normal: default
+        # - important: none atm
+        # - security: from @security
+
+        # FILTERS:
+        # - installed: try to update non-installed packages and call me ;)
+        # - free: ok
+        # - newest: ok
+
+        self.status(STATUS_INFO)
+        self.allow_cancel(True)
+        self.percentage(None)
+
+        fltlist = filters.split(';')
+
+        update_candidates = []
+        cpv_updates = {}
+        cpv_downgra = {}
+
+        # get system and world packages
+        for s in ["system", "world"]:
+            set = portage.sets.base.InternalPackageSet(
+                    initial_atoms=self.pvar.root_config.setconfig.getSetAtoms(s))
+            for atom in set:
+                update_candidates.append(atom.cp)
+
+        # check if a candidate can be updated
+        for cp in update_candidates:
+            cpv_list_inst = self.pvar.vardb.match(cp)
+            cpv_list_avai = self.pvar.portdb.match(cp)
+
+            cpv_dict_inst = self._get_cpv_slotted(cpv_list_inst)
+            cpv_dict_avai = self._get_cpv_slotted(cpv_list_avai)
+
+            dict_upda = {}
+            dict_down = {}
+
+            # candidate slots are installed slots
+            slots = cpv_dict_inst.keys()
+            slots.reverse()
+
+            for s in slots:
+                cpv_list_updates = []
+                cpv_inst = cpv_dict_inst[s][0] # only one install per slot
+
+                # the slot can be outdated (not in the tree)
+                if s not in cpv_dict_avai:
+                    break
+
+                tmp_list_avai = cpv_dict_avai[s]
+                tmp_list_avai.reverse()
+
+                for cpv in tmp_list_avai:
+                    if self._cmp_cpv(cpv_inst, cpv) == -1:
+                        cpv_list_updates.append(cpv)
+                    else: # because the list is sorted
+                        break
+
+                # no update for this slot
+                if len(cpv_list_updates) == 0:
+                    if [cpv_inst] == self.pvar.portdb.visible([cpv_inst]):
+                        break # really no update
+                    else:
+                        # that's actually a downgrade or even worst
+                        if len(tmp_list_avai) == 0:
+                            break # this package is not known in the tree...
+                        else:
+                            dict_down[s] = [tmp_list_avai.pop()]
+
+                cpv_list_updates = self._filter_free(cpv_list_updates, fltlist)
+
+                if len(cpv_list_updates) == 0:
+                    break
+
+                if FILTER_NEWEST in fltlist:
+                    best_cpv = portage.versions.best(cpv_list_updates)
+                    cpv_list_updates = [best_cpv]
+
+                dict_upda[s] = cpv_list_updates
+
+            if len(dict_upda) != 0:
+                cpv_updates[cp] = dict_upda
+            if len(dict_down) != 0:
+                cpv_downgra[cp] = dict_down
+
+        # get security updates
+        for atom in portage.sets.base.InternalPackageSet(
+                initial_atoms=self.pvar.root_config.setconfig.getSetAtoms("security")):
+            # send update message and remove atom from cpv_updates
+            if atom.cp in cpv_updates:
+                slot = self._get_metadata(atom.cpv, ["SLOT"])[0]
+                if slot in cpv_updates[atom.cp]:
+                    tmp_cpv_list = cpv_updates[atom.cp][slot][:]
+                    for cpv in tmp_cpv_list:
+                        if self._cmp_cpv(cpv, atom.cpv) >= 0:
+                            # cpv is a security update and removed from list
+                            cpv_updates[atom.cp][slot].remove(cpv)
+                            self._package(cpv, INFO_SECURITY)
+            else: # update also non-world and non-system packages if security
+                self._package(atom.cpv, INFO_SECURITY)
+
+        # downgrades
+        for cp in cpv_downgra:
+            for slot in cpv_downgra[cp]:
+                for cpv in cpv_downgra[cp][slot]:
+                    self._package(cpv, INFO_IMPORTANT)
+
+        # normal updates
+        for cp in cpv_updates:
+            for slot in cpv_updates[cp]:
+                for cpv in cpv_updates[cp][slot]:
+                    self._package(cpv, INFO_NORMAL)
+
+    def simulate_install_packages(self, pkgs):
+        return self._install_packages(False, pkgs, simulate=True)
+
+    def install_packages(self, only_trusted, pkgs):
+        return self._install_packages(False, pkgs)
+
+    def _install_packages(self, only_trusted, pkgs, simulate=False):
+        # NOTES:
+        # can't install an already installed packages
+        # even if it happens to be needed in Gentoo but probably not this API
+        # TODO: every merged pkg should emit self.package()
+        #       see around _emerge.Scheduler.Scheduler
+
+        self.status(STATUS_RUNNING)
+        self.allow_cancel(False)
+        self.percentage(None)
+
+        cpv_list = []
+
+        for pkg in pkgs:
+            cpv = self._id_to_cpv(pkg)
+
+            if not self._is_cpv_valid(cpv):
+                self.error(ERROR_PACKAGE_NOT_FOUND,
+                        "Package %s was not found" % pkg)
+                continue
+
+            if self._is_installed(cpv):
+                self.error(ERROR_PACKAGE_ALREADY_INSTALLED,
+                        "Package %s is already installed" % pkg)
+                continue
+
+            cpv_list.append('=' + cpv)
+
+        # only_trusted isn't supported
+        # but better to show it after important errors
+        if only_trusted:
+            self.error(ERROR_MISSING_GPG_SIGNATURE,
+                    "Portage backend does not support GPG signature")
+            return
+
+        # creating installation depgraph
+        myopts = {}
+        favorites = []
+        myparams = _emerge.create_depgraph_params.create_depgraph_params(
+                myopts, "")
+
+        self.status(STATUS_DEP_RESOLVE)
+
+        depgraph = _emerge.depgraph.depgraph(self.pvar.settings,
+                self.pvar.trees, myopts, myparams, None)
+        retval, favorites = depgraph.select_files(cpv_list)
+        if not retval:
+            self.error(ERROR_DEP_RESOLUTION_FAILED,
+                    "Wasn't able to get dependency graph")
+            return
+
+        # check fetch restrict, can stop the function via error signal
+        self._check_fetch_restrict(depgraph.altlist())
+
+        self.status(STATUS_INSTALL)
+
+        if simulate:
+            return
+
+        # get elog messages
+        portage.elog.add_listener(self._elog_listener)
+
+        try:
+            self._block_output()
+            # compiling/installing
+            mergetask = _emerge.Scheduler.Scheduler(self.pvar.settings,
+                    self.pvar.trees, self.pvar.mtimedb, myopts, None,
+                    depgraph.altlist(), favorites, depgraph.schedulerGraph())
+            rval = mergetask.merge()
+        finally:
+            self._unblock_output()
+
+        # when an error is found print error messages
+        if rval != os.EX_OK:
+            self._send_merge_error(ERROR_PACKAGE_FAILED_TO_INSTALL)
+
+        # show elog messages and clean
+        portage.elog.remove_listener(self._elog_listener)
+        for msg in self._elog_messages:
+            # TODO: use specific message ?
+            self.message(MESSAGE_UNKNOWN, msg)
+        self._elog_messages = []
+
+        self._signal_config_update()
+
+    def refresh_cache(self, force):
+        # NOTES: can't manage progress even if it could be better
+        # TODO: do not wait for exception, check timestamp
+        # TODO: message if overlay repo has changed (layman)
+        self.status(STATUS_REFRESH_CACHE)
+        self.allow_cancel(False)
+        self.percentage(None)
+
+        myopts = {'--quiet': True}
+
+        # get installed and available dbs
+        installed_layman_db = layman.db.DB(layman.config.Config())
+
+        if force:
+            timestamp_path = os.path.join(
+                    self.pvar.settings["PORTDIR"], "metadata", "timestamp.chk")
+            if os.access(timestamp_path, os.F_OK):
+                os.remove(timestamp_path)
+
+        try:
+            self._block_output()
+            for o in installed_layman_db.overlays.keys():
+                installed_layman_db.sync(o, quiet=True)
+            _emerge.actions.action_sync(self.pvar.settings, self.pvar.trees,
+                    self.pvar.mtimedb, myopts, "")
+        except:
+            self.error(ERROR_INTERNAL_ERROR, traceback.format_exc())
+        finally:
+            self._unblock_output()
+
+    def remove_packages(self, allowdep, autoremove, pkgs):
+        return self._remove_packages(allowdep, autoremove, pkgs)
+
+    def simulate_remove_packages(self, pkgs):
+        return self._remove_packages(True, False, pkgs, simulate=True)
+
+    def _remove_packages(self, allowdep, autoremove, pkgs, simulate=False):
+        # TODO: every to-be-removed pkg should emit self.package()
+        #       see around _emerge.Scheduler.Scheduler
+        self.status(STATUS_RUNNING)
+        self.allow_cancel(False)
+        self.percentage(None)
+
+        cpv_list = []
+        packages = []
+        required_packages = []
+        system_packages = []
+
+        # get system packages
+        set = portage.sets.base.InternalPackageSet(
+                initial_atoms=self.pvar.root_config.setconfig.getSetAtoms("system"))
+        for atom in set:
+            system_packages.append(atom.cp)
+
+        # create cpv_list
+        for pkg in pkgs:
+            cpv = self._id_to_cpv(pkg)
+
+            if not self._is_cpv_valid(cpv):
+                self.error(ERROR_PACKAGE_NOT_FOUND,
+                        "Package %s was not found" % pkg)
+                continue
+
+            if not self._is_installed(cpv):
+                self.error(ERROR_PACKAGE_NOT_INSTALLED,
+                        "Package %s is not installed" % pkg)
+                continue
+
+            # stop removal if a package is in the system set
+            if portage.versions.pkgsplit(cpv)[0] in system_packages:
+                self.error(ERROR_CANNOT_REMOVE_SYSTEM_PACKAGE,
+                        "Package %s is a system package. If you really want to remove it, please use portage" % pkg)
+                continue
+
+            cpv_list.append(cpv)
+
+        # backend do not implement autoremove
+        if autoremove:
+            self.message(MESSAGE_AUTOREMOVE_IGNORED,
+                    "Portage backend do not implement autoremove option")
+
+        # get packages needing candidates for removal
+        required_packages = self._get_required_packages(cpv_list, recursive=True)
+
+        # if there are required packages, allowdep must be on
+        if required_packages and not allowdep:
+            self.error(ERROR_DEP_RESOLUTION_FAILED,
+                    "Could not perform remove operation has packages are needed by other packages")
+            return
+
+        # first, we add required packages
+        for p in required_packages:
+            package = _emerge.Package.Package(
+                    type_name=p.type_name,
+                    built=p.built,
+                    installed=p.installed,
+                    root_config=p.root_config,
+                    cpv=p.cpv,
+                    metadata=p.metadata,
+                    operation='uninstall')
+            packages.append(package)
+
+        # and now, packages we want really to remove
+        for cpv in cpv_list:
+            metadata = self._get_metadata(cpv, [],
+                    in_dict=True, add_cache_keys=True)
+            package = _emerge.Package.Package(
+                    type_name="ebuild",
+                    built=True,
+                    installed=True,
+                    root_config=self.pvar.root_config,
+                    cpv=cpv,
+                    metadata=metadata,
+                    operation="uninstall")
+            packages.append(package)
+
+        if simulate:
+            return
+
+        # need to define favorites to remove packages from world set
+        favorites = []
+        for p in packages:
+            favorites.append('=' + p.cpv)
+
+        # get elog messages
+        portage.elog.add_listener(self._elog_listener)
+
+        # now, we can remove
+        try:
+            self._block_output()
+            mergetask = _emerge.Scheduler.Scheduler(self.pvar.settings,
+                    self.pvar.trees, self.pvar.mtimedb, mergelist=packages,
+                    myopts={}, spinner=None, favorites=favorites, digraph=None)
+            rval = mergetask.merge()
+        finally:
+            self._unblock_output()
+
+        # when an error is found print error messages
+        if rval != os.EX_OK:
+            self._send_merge_error(ERROR_PACKAGE_FAILED_TO_REMOVE)
+
+        # show elog messages and clean
+        portage.elog.remove_listener(self._elog_listener)
+        for msg in self._elog_messages:
+            # TODO: use specific message ?
+            self.message(MESSAGE_UNKNOWN, msg)
+        self._elog_messages = []
+
+    def repo_enable(self, repoid, enable):
+        # NOTES: use layman API >= 1.2.3
+        self.status(STATUS_INFO)
+        self.allow_cancel(True)
+        self.percentage(None)
+
+        # special case: trying to work with gentoo repo
+        if repoid == 'gentoo':
+            if not enable:
+                self.error(ERROR_CANNOT_DISABLE_REPOSITORY,
+                        "gentoo repository can't be disabled")
+            return
+
+        # get installed and available dbs
+        installed_layman_db = layman.db.DB(layman.config.Config())
+        available_layman_db = layman.db.RemoteDB(layman.config.Config())
+
+        # check now for repoid so we don't have to do it after
+        if not repoid in available_layman_db.overlays.keys():
+            self.error(ERROR_REPO_NOT_FOUND,
+                    "Repository %s was not found" % repoid)
+            return
+
+        # disabling (removing) a db
+        # if repository already disabled, ignoring
+        if not enable and self._is_repo_enabled(installed_layman_db, repoid):
+            try:
+                installed_layman_db.delete(installed_layman_db.select(repoid))
+            except Exception, e:
+                self.error(ERROR_INTERNAL_ERROR,
+                        "Failed to disable repository "+repoid+" : "+str(e))
+                return
+
+        # enabling (adding) a db
+        # if repository already enabled, ignoring
+        if enable and not self._is_repo_enabled(installed_layman_db, repoid):
+            try:
+                # TODO: clean the trick to prevent outputs from layman
+                self._block_output()
+                installed_layman_db.add(available_layman_db.select(repoid),
+                        quiet=True)
+                self._unblock_output()
+            except Exception, e:
+                self._unblock_output()
+                self.error(ERROR_INTERNAL_ERROR,
+                        "Failed to enable repository "+repoid+" : "+str(e))
+                return
+
+    def resolve(self, filters, pkgs):
+        self.status(STATUS_QUERY)
+        self.allow_cancel(True)
+        self.percentage(0)
+
+        fltlist = filters.split(';')
+        cp_list = self._get_all_cp(fltlist)
+        nb_cp = float(len(cp_list))
+        cp_processed = 0.0
+
+        reg_expr = []
+        for pkg in pkgs:
+            reg_expr.append("^" + re.escape(pkg) + "$")
+        reg_expr = "|".join(reg_expr)
+
+        # specifications says "be case sensitive"
+        s = re.compile(reg_expr)
+
+        for cp in cp_list:
+            if s.match(cp):
+                for cpv in self._get_all_cpv(cp, fltlist):
+                    self._package(cpv)
+
+            cp_processed += 100.0
+            self.percentage(int(cp_processed/nb_cp))
+
+        self.percentage(100)
+
+    def search_details(self, filters, keys):
+        # NOTES: very bad performance
+        self.status(STATUS_QUERY)
+        self.allow_cancel(True)
+        self.percentage(0)
+
+        fltlist = filters.split(';')
+        cp_list = self._get_all_cp(fltlist)
+        nb_cp = float(len(cp_list))
+        cp_processed = 0.0
+        search_list = self._get_search_list(keys)
+
+        for cp in cp_list:
+            # unfortunatelly, everything is related to cpv, not cp
+            # can't filter cp
+            cpv_list = []
+
+            # newest filter can't be executed now
+            # because some cpv are going to be filtered by search conditions
+            # and newest filter could be alterated
+            for cpv in self._get_all_cpv(cp, fltlist, filter_newest=False):
+                match = True
+                metadata =  self._get_metadata(cpv,
+                        ["DESCRIPTION", "HOMEPAGE", "IUSE",
+                            "LICENSE", "repository", "SLOT"],
+                        in_dict=True)
+                # update LICENSE to correspond to system settings
+                metadata["LICENSE"] = self._get_real_license_str(cpv, metadata)
+                for s in search_list:
+                    found = False
+                    for x in metadata:
+                        if s.search(metadata[x]):
+                            found = True
+                            break
+                    if not found:
+                        match = False
+                        break
+                if match:
+                    cpv_list.append(cpv)
+
+            # newest filter
+            cpv_list = self._filter_newest(cpv_list, fltlist)
+
+            for cpv in cpv_list:
+                self._package(cpv)
+
+            cp_processed += 100.0
+            self.percentage(int(cp_processed/nb_cp))
+
+        self.percentage(100)
+
+    def search_file(self, filters, key):
+        # FILTERS:
+        # - ~installed is not accepted (error)
+        # - free: ok
+        # - newest: as only installed, by himself
+        self.status(STATUS_QUERY)
+        self.allow_cancel(True)
+        self.percentage(0)
+
+        fltlist = filters.split(';')
+
+        if FILTER_NOT_INSTALLED in fltlist:
+            self.error(ERROR_CANNOT_GET_FILELIST,
+                    "search-file isn't available with ~installed filter")
+            return
+
+        cpv_list = self.pvar.vardb.cpv_all()
+        nb_cpv = 0.0
+        cpv_processed = 0.0
+        is_full_path = True
+
+        if key[0] != "/":
+            is_full_path = False
+            key = re.escape(key)
+            searchre = re.compile("/" + key + "$", re.IGNORECASE)
+
+        # free filter
+        cpv_list = self._filter_free(cpv_list, fltlist)
+        nb_cpv = float(len(cpv_list))
+
+        for cpv in cpv_list:
+            for f in self._get_file_list(cpv):
+                if (is_full_path and key == f) \
+                or (not is_full_path and searchre.search(f)):
+                    self._package(cpv)
+                    break
+
+            cpv_processed += 100.0
+            self.percentage(int(cpv_processed/nb_cpv))
+
+        self.percentage(100)
+
+    def search_group(self, filters, groups):
+        # TODO: filter unknown groups before searching ? (optimization)
+        self.status(STATUS_QUERY)
+        self.allow_cancel(True)
+        self.percentage(0)
+
+        fltlist = filters.split(';')
+        cp_list = self._get_all_cp(fltlist)
+        nb_cp = float(len(cp_list))
+        cp_processed = 0.0
+
+        for cp in cp_list:
+            for group in groups:
+                if self._get_pk_group(cp) == group:
+                    for cpv in self._get_all_cpv(cp, fltlist):
+                        self._package(cpv)
+
+            cp_processed += 100.0
+            self.percentage(int(cp_processed/nb_cp))
+
+        self.percentage(100)
+
+    def search_name(self, filters, keys_list):
+        # searching for all keys in package name
+        # also filtering by categories if categery is specified in a key
+        # keys contain more than one category name, no results can be found
+        self.status(STATUS_QUERY)
+        self.allow_cancel(True)
+        self.percentage(0)
+
+        categories = []
+        for k in keys_list[:]:
+            if "/" in k:
+                cat, cp = portage.versions.catsplit(k)
+                categories.append(cat)
+                keys_list[keys_list.index(k)] = cp
+
+        category_filter = None
+        if len(categories) > 1:
+            # nothing will be found because we have two cat/pkg
+            # with a AND operator search
+            return
+        elif len(categories) == 1:
+            category_filter = categories[0]
+
+        # do not use self._get_search_list because of this category feature
+        search_list = []
+        for k in keys_list:
+            # not done entirely by pk-transaction
+            k = re.escape(k)
+            search_list.append(re.compile(k, re.IGNORECASE))
+
+        fltlist = filters.split(';')
+        cp_list = self._get_all_cp(fltlist)
+        nb_cp = float(len(cp_list))
+        cp_processed = 0.0
+
+        for cp in cp_list:
+            if category_filter:
+                cat, pkg_name = portage.versions.catsplit(cp)
+                if cat != category_filter:
+                    continue
+            else:
+                pkg_name = portage.versions.catsplit(cp)[1]
+            found = True
+
+            # pkg name has to correspond to _every_ keys
+            for s in search_list:
+                if not s.search(pkg_name):
+                    found = False
+                    break
+            if found:
+                for cpv in self._get_all_cpv(cp, fltlist):
+                    self._package(cpv)
+
+            cp_processed += 100.0
+            self.percentage(int(cp_processed/nb_cp))
+
+        self.percentage(100)
+
+    def update_packages(self, only_trusted, pkgs):
+        return self._update_packages(only_trusted, pkgs)
+
+    def simulate_update_packages(self, pkgs):
+        return self._update_packages(False, pkgs, simulate=True)
+
+    def _update_packages(self, only_trusted, pkgs, simulate=False):
+        # TODO: manage errors
+        # TODO: manage config file updates
+        # TODO: every updated pkg should emit self.package()
+        #       see around _emerge.Scheduler.Scheduler
+
+        self.status(STATUS_RUNNING)
+        self.allow_cancel(False)
+        self.percentage(None)
+
+        cpv_list = []
+
+        for pkg in pkgs:
+            cpv = self._id_to_cpv(pkg)
+
+            if not self._is_cpv_valid(cpv):
+                self.error(ERROR_UPDATE_NOT_FOUND,
+                        "Package %s was not found" % pkg)
+                continue
+
+            cpv_list.append('=' + cpv)
+
+        # only_trusted isn't supported
+        # but better to show it after important errors
+        if only_trusted:
+            self.error(ERROR_MISSING_GPG_SIGNATURE,
+                    "Portage backend does not support GPG signature")
+            return
+
+        # creating update depgraph
+        myopts = {}
+        favorites = []
+        myparams = _emerge.create_depgraph_params.create_depgraph_params(
+                myopts, "")
+
+        self.status(STATUS_DEP_RESOLVE)
+
+        depgraph = _emerge.depgraph.depgraph(self.pvar.settings,
+                self.pvar.trees, myopts, myparams, None)
+        retval, favorites = depgraph.select_files(cpv_list)
+        if not retval:
+            self.error(ERROR_DEP_RESOLUTION_FAILED,
+                    "Wasn't able to get dependency graph")
+            return
+
+        # check fetch restrict, can stop the function via error signal
+        self._check_fetch_restrict(depgraph.altlist())
+
+        self.status(STATUS_INSTALL)
+
+        if simulate:
+            return
+
+        # get elog messages
+        portage.elog.add_listener(self._elog_listener)
+
+        try:
+            self._block_output()
+            # compiling/installing
+            mergetask = _emerge.Scheduler.Scheduler(self.pvar.settings,
+                    self.pvar.trees, self.pvar.mtimedb, myopts, None,
+                    depgraph.altlist(), favorites, depgraph.schedulerGraph())
+            rval = mergetask.merge()
+        finally:
+            self._unblock_output()
+
+        # when an error is found print error messages
+        if rval != os.EX_OK:
+            self._send_merge_error(ERROR_PACKAGE_FAILED_TO_INSTALL)
+
+        # show elog messages and clean
+        portage.elog.remove_listener(self._elog_listener)
+        for msg in self._elog_messages:
+            # TODO: use specific message ?
+            self.message(MESSAGE_UNKNOWN, msg)
+        self._elog_messages = []
+
+        self._signal_config_update()
+
+    def update_system(self, only_trusted):
+        self.status(STATUS_RUNNING)
+        self.allow_cancel(False)
+        self.percentage(None)
+
+        if only_trusted:
+            self.error(ERROR_MISSING_GPG_SIGNATURE,
+                    "Portage backend does not support GPG signature")
+            return
+
+        myopts = {}
+        myopts["--deep"] = True
+        myopts["--newuse"] = True
+        myopts["--update"] = True
+
+        myparams = _emerge.create_depgraph_params.create_depgraph_params(
+                myopts, "")
+
+        self.status(STATUS_DEP_RESOLVE)
+
+        # creating list of ebuilds needed for the system update
+        # using backtrack_depgraph to prevent errors
+        retval, depgraph, _ = _emerge.depgraph.backtrack_depgraph(
+                self.pvar.settings, self.pvar.trees, myopts, myparams, "",
+                ["@system", "@world"], None)
+        if not retval:
+            self.error(ERROR_INTERNAL_ERROR,
+                    "Wasn't able to get dependency graph")
+            return
+
+        # check fetch restrict, can stop the function via error signal
+        self._check_fetch_restrict(depgraph.altlist())
+
+        self.status(STATUS_INSTALL)
+
+        # get elog messages
+        portage.elog.add_listener(self._elog_listener)
+
+        try:
+            self._block_output()
+            # compiling/installing
+            mergetask = _emerge.Scheduler.Scheduler(self.pvar.settings,
+                    self.pvar.trees, self.pvar.mtimedb, myopts, None,
+                    depgraph.altlist(), None, depgraph.schedulerGraph())
+            rval = mergetask.merge()
+        finally:
+            self._unblock_output()
+
+        # when an error is found print error messages
+        if rval != os.EX_OK:
+            self._send_merge_error(ERROR_PACKAGE_FAILED_TO_INSTALL)
+
+        # show elog messages and clean
+        portage.elog.remove_listener(self._elog_listener)
+        for msg in self._elog_messages:
+            # TODO: use specific message ?
+            self.message(MESSAGE_UNKNOWN, msg)
+        self._elog_messages = []
+
+        self._signal_config_update()
+
+def main():
+    backend = PackageKitPortageBackend("")
+    backend.dispatcher(sys.argv[1:])
+
+if __name__ == "__main__":
+    main()
diff --git a/src/runner.c b/src/runner.c
new file mode 100644
index 0000000..08433a6
--- /dev/null
+++ b/src/runner.c
@@ -0,0 +1,93 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+#include "runner.h"
+
+void stdoutWritten(char*);
+
+struct Runner {
+	void *writeStdout;
+};
+
+int main(int argc, char* argv[])
+{
+	// Tries to compare 2 packages version.
+	if (argc < 3)
+	{
+		printf("Please provide 2 packages.\n");
+		return -1;
+	}
+
+	char *str = malloc((strlen(argv[1]) + strlen(argv[2]) + 2) * sizeof(char));
+
+	sprintf(str, "%s %s", argv[1], argv[2]);
+
+	Runner *r = createRunner();
+	r->writeStdout = stdoutWritten;
+	int ret = execute(r, str);
+	if (ret < 0)
+		printf("Execution error\n");
+	
+	freeRunner(r);
+
+	return 0;
+}
+
+void stdoutWritten(char *data)
+{
+	printf("From program : %s\n", data);
+}
+
+Runner *createRunner()
+{
+	Runner *ret = malloc(sizeof(Runner));
+	return ret;
+}
+
+int execute(Runner *r, char *args)
+{
+	r = r;
+	int ret = fork();
+	if (ret > 0)
+	{
+		printf("New PID = %d\n", ret);
+		return ret;
+	}
+	
+	//printf("args = %s\n", args);
+	//int fd = open("out.txt", O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
+
+	int fd = socket(AF_INET, SOCK_STREAM, 0);
+	if (fd < 0) 
+		printf("ERROR opening socket\n");
+	
+	struct sockaddr_in serv_addr;
+
+	memset(&serv_addr, 0, sizeof(serv_addr));
+	int portno = 5555;
+	serv_addr.sin_family = AF_INET;
+	serv_addr.sin_addr.s_addr = INADDR_ANY;
+	serv_addr.sin_port = htons(portno);
+	if (connect(fd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0) 
+		printf("ERROR on connecting\n");
+	
+	//listen(fd, 5);
+
+	dup2(fd, STDOUT_FILENO);
+	ret = execl("/home/detlev/src/c-portage/src/test.py", "test.py", "app-portage/kuroo4-4.2", "app-portage/kuroo4-4.3", NULL);
+	printf("execl: (%d) %s\n", errno, strerror(errno));
+	return ret;
+}
+
+void freeRunner(Runner *r)
+{
+	free(r);
+}
diff --git a/src/runner.h b/src/runner.h
new file mode 100644
index 0000000..c087895
--- /dev/null
+++ b/src/runner.h
@@ -0,0 +1,6 @@
+
+typedef struct Runner Runner;
+
+Runner *createRunner();
+int execute(Runner*, char*);
+void freeRunner(Runner*);
diff --git a/src/test.py b/src/test.py
new file mode 100755
index 0000000..fadcbdf
--- /dev/null
+++ b/src/test.py
@@ -0,0 +1,15 @@
+#!/usr/bin/python
+# !!!! WARNING !!!!
+# Test file : It's not safe, can break your system and make your life miserable, you've been warned.
+# !!!! WARNING !!!!
+
+from portage import *
+
+ret = pkgcmp(pkgsplit(sys.argv[1]), pkgsplit(sys.argv[2]))
+
+if ret == 0 :
+	print "same"
+elif ret == -1:
+	print "less"
+else:
+	print "more"