86 lines
3.6 KiB
Python
86 lines
3.6 KiB
Python
from django.core.exceptions import ImproperlyConfigured
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from django.core.exceptions import ObjectDoesNotExist
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from django.core.exceptions import PermissionDenied
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from django.contrib.auth.decorators import login_required
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from django.db.models import Q
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from tracker.models import Project
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from permissions.models import GlobalPermission
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from permissions.models import PermissionModel as PermModel
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# This middleware protect only views of the following modules
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modules = ['accounts.views', 'permissions.views', 'tracker.views']
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class ProjectMiddleware:
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"""
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This middleware must be call after authentication middleware.
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"""
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def process_view(self, request, view, view_args, view_kwargs):
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if not hasattr(request, 'user'):
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raise ImproperlyConfigured(
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"The project middleware requires the"
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" authentication middleware to be installed. Edit your"
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" MIDDLEWARE_CLASSES setting to insert"
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" 'django.contrib.auth.middleware.AuthenticationMiddleware'"
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" before the ProjectMiddleware class.")
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# projectS
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if request.user.is_authenticated() and request.user.is_staff:
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projects = Project.objects.all()
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elif request.user.is_authenticated():
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teams = request.user.teams.values_list('id')
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groups = request.user.groups.values_list('id')
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# check for a global permission allowing access
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if GlobalPermission.objects.filter(access_project=True) \
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.filter(
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# directly
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Q(grantee_type=PermModel.GRANTEE_USER,
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grantee_id=request.user.id)
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# through a group
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| Q(grantee_type=PermModel.GRANTEE_GROUP,
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grantee_id__in=groups)
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# through a team
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| Q(grantee_type=PermModel.GRANTEE_TEAM,
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grantee_id__in=teams)
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).exists():
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projects = Project.objects.all()
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# searching project reachable throught project permission
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else:
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# public project
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query = Q(access=Project.ACCESS_PUBLIC)
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# project reserved to logged users
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query |= Q(access=Project.ACCESS_REGISTERED)
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# access granted through a team
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query |= Q(permissions__grantee_type=PermModel.GRANTEE_TEAM,
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permissions__grantee_id__in=teams)
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# access granted through a group
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query |= Q(permissions__grantee_type=PermModel.GRANTEE_GROUP,
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permissions__grantee_id__in=groups)
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# access granted by specific permission
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query |= Q(permissions__grantee_type=PermModel.GRANTEE_USER,
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permissions__grantee_id=request.user.id)
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projects = Project.objects.filter(query).distinct()
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else:
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# only public projects
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projects = Project.objects.filter(access=Project.ACCESS_PUBLIC)
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request.projects = projects
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# project
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if view.__module__ not in modules:
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return
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project = view_kwargs.get('project')
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if not project:
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return
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try:
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project = projects.get(name=project)
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except ObjectDoesNotExist:
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if request.user.is_authenticated():
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raise PermissionDenied()
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else:
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return login_required(view)(request, *view_args, **view_kwargs)
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view_kwargs['project'] = project
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request.project = project
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