2022-10-25 04:57:34 +00:00
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import shutil
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import zipfile
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2022-11-01 12:37:04 +00:00
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from typing import Callable
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2022-10-25 04:57:34 +00:00
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import yaml
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2022-10-28 10:19:44 +00:00
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import os.path
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2022-10-25 11:31:13 +00:00
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2022-10-25 04:57:34 +00:00
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from rest_framework import viewsets
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2022-11-01 10:40:42 +00:00
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from django.http import HttpResponse
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2022-11-02 03:08:13 +00:00
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from django.core.files.storage import default_storage
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from django.db.models import Prefetch
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2022-10-25 04:57:34 +00:00
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from rest_framework.decorators import action
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2022-11-01 12:37:04 +00:00
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from rest_framework.request import Request
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2022-10-25 04:57:34 +00:00
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from rest_framework.response import Response
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from rest_framework.serializers import ValidationError
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2022-10-25 04:57:34 +00:00
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from terminal import serializers
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from terminal.models import AppletPublication, Applet
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from terminal.serializers import AppletUploadSerializer
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2022-10-28 10:19:44 +00:00
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__all__ = ['AppletViewSet', 'AppletPublicationViewSet']
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2022-11-01 12:37:04 +00:00
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class DownloadUploadMixin:
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get_serializer: Callable
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request: Request
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get_object: Callable
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2022-10-25 11:31:13 +00:00
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def extract_and_check_file(self, request):
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serializer = self.get_serializer(data=self.request.data)
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serializer.is_valid(raise_exception=True)
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file = serializer.validated_data['file']
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save_to = 'applets/{}'.format(file.name + '.tmp.zip')
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if default_storage.exists(save_to):
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default_storage.delete(save_to)
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rel_path = default_storage.save(save_to, file)
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path = default_storage.path(rel_path)
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extract_to = default_storage.path('applets/{}.tmp'.format(file.name))
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if os.path.exists(extract_to):
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shutil.rmtree(extract_to)
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with zipfile.ZipFile(path) as zp:
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if zp.testzip() is not None:
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return Response({'msg': 'Invalid Zip file'}, status=400)
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zp.extractall(extract_to)
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tmp_dir = os.path.join(extract_to, file.name.replace('.zip', ''))
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2022-11-01 11:06:35 +00:00
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files = ['manifest.yml', 'icon.png', 'i18n.yml', 'setup.yml']
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for name in files:
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path = os.path.join(tmp_dir, name)
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if not os.path.exists(path):
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raise ValidationError({'error': 'Missing file {}'.format(name)})
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with open(os.path.join(tmp_dir, 'manifest.yml')) as f:
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manifest = yaml.safe_load(f)
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if not manifest.get('name', ''):
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raise ValidationError({'error': 'Missing name in manifest.yml'})
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return manifest, tmp_dir
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@action(detail=False, methods=['post'], serializer_class=AppletUploadSerializer)
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def upload(self, request, *args, **kwargs):
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manifest, tmp_dir = self.extract_and_check_file(request)
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name = manifest['name']
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update = request.query_params.get('update')
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instance = Applet.objects.filter(name=name).first()
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if instance and not update:
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return Response({'error': 'Applet already exists: {}'.format(name)}, status=400)
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serializer = serializers.AppletSerializer(data=manifest, instance=instance)
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serializer.is_valid(raise_exception=True)
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save_to = default_storage.path('applets/{}'.format(name))
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if os.path.exists(save_to):
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shutil.rmtree(save_to)
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shutil.move(tmp_dir, save_to)
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serializer.save()
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return Response(serializer.data, status=201)
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@action(detail=True, methods=['get'])
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def download(self, request, *args, **kwargs):
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instance = self.get_object()
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path = default_storage.path('applets/{}'.format(instance.name))
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zip_path = shutil.make_archive(path, 'zip', path)
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with open(zip_path, 'rb') as f:
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response = HttpResponse(f.read(), status=200, content_type='application/octet-stream')
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response['Content-Disposition'] = 'attachment; filename*=UTF-8\'\'{}.zip'.format(instance.name)
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return response
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class AppletViewSet(DownloadUploadMixin, viewsets.ModelViewSet):
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queryset = Applet.objects.all()
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serializer_class = serializers.AppletSerializer
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rbac_perms = {
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'upload': 'terminal.add_applet',
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'download': 'terminal.view_applet',
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}
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def get_queryset(self):
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queryset = super().get_queryset()
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host = self.request.query_params.get('host')
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if not host:
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return queryset.prefetch_related('publications')
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else:
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publications = AppletPublication.objects.filter(host_id=host)
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return queryset.prefetch_related(Prefetch('publications', queryset=publications))
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def perform_destroy(self, instance):
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if not instance.name:
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raise ValidationError('Applet is not null')
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path = default_storage.path('applets/{}'.format(instance.name))
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if os.path.exists(path):
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shutil.rmtree(path)
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instance.delete()
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class AppletPublicationViewSet(viewsets.ModelViewSet):
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queryset = AppletPublication.objects.all()
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serializer_class = serializers.AppletPublicationSerializer
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