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# coding: utf-8 |
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""" |
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This software is licensed under the Apache 2 license, quoted below. |
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Copyright 2014 Crystalnix Limited |
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Licensed under the Apache License, Version 2.0 (the "License"); you may not |
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use this file except in compliance with the License. You may obtain a copy of |
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the License at |
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http://www.apache.org/licenses/LICENSE-2.0 |
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Unless required by applicable law or agreed to in writing, software |
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distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
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WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
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License for the specific language governing permissions and limitations under |
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the License. |
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""" |
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from builtins import filter |
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from functools import partial, reduce |
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from uuid import UUID |
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from django.utils.timezone import now |
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from django.db.models import Q |
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from lxml import etree |
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from cacheops import cached_as |
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from omaha import tasks |
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from omaha.models import Version |
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from omaha.parser import parse_request |
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from omaha import parser |
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from omaha.statistics import is_user_active |
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from omaha.core import (Response, App, Updatecheck_negative, Manifest, Updatecheck_positive, |
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Packages, Package, Actions, Action, Event, Data) |
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__all__ = ['build_response'] |
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def on_event(event_list, event): |
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event_list.append(Event()) |
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return event_list |
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def on_data(data_list, data, version): |
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name = data.get('name') |
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if name == 'untrusted': |
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_data = Data('untrusted') |
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elif name == 'install': |
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index = data.get('index') |
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data_obj_list = filter(lambda d: d.index == index, version.app.data_set.all()) |
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try: |
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_data = Data('install', index=index, text=next(data_obj_list).value) |
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except StopIteration: |
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_data = Data('install', index=index, status='error-nodata') |
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data_list.append(_data) |
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return data_list |
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def on_action(action_list, action): |
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action = Action( |
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event=action.get_event_display(), |
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**action.get_attributes() |
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) |
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action_list.append(action) |
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return action_list |
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def is_new_user(version): |
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if version == '': |
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return True |
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return False |
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@cached_as(Version, timeout=60) |
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def _get_version(partialupdate, app_id, platform, channel, version, date=None): |
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date = date or now() |
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qs = Version.objects.select_related('app') |
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qs = qs.filter_by_enabled(app=app_id, |
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platform__name=platform, |
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channel__name=channel) |
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qs = qs.filter(version__gt=version) if version else qs |
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qs = qs.prefetch_related("actions", "partialupdate") |
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if partialupdate: |
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try: |
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qs = qs.filter(partialupdate__is_enabled=True, |
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partialupdate__start_date__lte=date, |
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partialupdate__end_date__gte=date) |
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critical_version = qs.filter(is_critical=True).order_by('version').cache().first() |
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new_version = qs.cache().latest('version') |
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except Version.DoesNotExist: |
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return None |
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else: |
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qs = qs.filter(Q(partialupdate__isnull=True) |
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| Q(partialupdate__is_enabled=False)) |
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try: |
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critical_version = qs.filter(is_critical=True).order_by('version').cache().first() |
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new_version = qs.cache().latest('version') |
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except: |
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raise Version.DoesNotExist |
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if not is_new_user(version) and critical_version: |
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return critical_version |
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return new_version |
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def get_version(app_id, platform, channel, version, userid, date=None): |
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try: |
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new_version = _get_version(True, app_id, platform, channel, version, date=date) |
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if not new_version: |
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raise Version.DoesNotExist |
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if new_version.partialupdate.exclude_new_users and is_new_user(version): |
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raise Version.DoesNotExist |
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if not is_user_active(new_version.partialupdate.active_users, userid): |
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raise Version.DoesNotExist |
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userid_int = UUID(userid).int |
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percent = new_version.partialupdate.percent |
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if not (userid_int % int(100 / percent)) == 0: |
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raise Version.DoesNotExist |
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except Version.DoesNotExist: |
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new_version = _get_version(False, app_id, platform, channel, version, date=date) |
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return new_version |
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def on_app(apps_list, app, os, userid): |
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app_id = app.get('appid') |
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version = app.get('version') |
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platform = os.get('platform') |
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channel = parser.get_channel(app) |
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ping = bool(app.findall('ping')) |
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events = reduce(on_event, app.findall('event'), []) |
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build_app = partial(App, app_id, status='ok', ping=ping, events=events) |
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updatecheck = app.findall('updatecheck') |
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try: |
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version = get_version(app_id, platform, channel, version, userid) |
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except Version.DoesNotExist: |
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apps_list.append( |
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build_app(updatecheck=Updatecheck_negative() if updatecheck else None)) |
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return apps_list |
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data_list = reduce(partial(on_data, version=version), app.findall('data'), []) |
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build_app = partial(build_app, data_list=data_list) |
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if updatecheck: |
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actions = reduce(on_action, version.actions.all(), []) |
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updatecheck = Updatecheck_positive( |
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urls=[version.file_url], |
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manifest=Manifest( |
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version=str(version.version), |
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packages=Packages([Package( |
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name=version.file_package_name, |
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required='true', |
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size=str(version.file_size), |
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hash=version.file_hash, |
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)]), |
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actions=Actions(actions) if actions else None, |
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) |
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) |
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apps_list.append(build_app(updatecheck=updatecheck)) |
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else: |
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apps_list.append(build_app()) |
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return apps_list |
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def build_response(request, pretty_print=True, ip=None): |
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obj = parse_request(request) |
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tasks.collect_statistics.apply_async(args=(request, ip), queue='transient') |
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userid = obj.get('userid') |
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apps = obj.findall('app') |
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apps_list = reduce(partial(on_app, os=obj.os, userid=userid), apps, []) |
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response = Response(apps_list, date=now()) |
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return etree.tostring(response, pretty_print=pretty_print, |
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xml_declaration=True, encoding='UTF-8') |
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