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66 lines
2.3 KiB
66 lines
2.3 KiB
# Copyright © 2017 Tom Hacohen
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, version 3.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from rest_framework import permissions
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from journal.models import Journal, JournalMember
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class IsOwnerOrReadOnly(permissions.BasePermission):
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"""
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Custom permission to only allow owners of an object to edit it.
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"""
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def has_object_permission(self, request, view, obj):
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if request.method in permissions.SAFE_METHODS:
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return True
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return obj.owner == request.user
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class IsJournalOwner(permissions.BasePermission):
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"""
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Custom permission to only allow owners of a journal to view it
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"""
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def has_permission(self, request, view):
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journal_uid = view.kwargs['journal_uid']
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try:
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journal = view.get_journal_queryset().get(uid=journal_uid)
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return journal.owner == request.user
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except Journal.DoesNotExist:
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# If the journal does not exist, we want to 404 later, not permission denied.
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return True
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class IsMemberReadOnly(permissions.BasePermission):
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"""
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Custom permission to make a journal read only if a read only member
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"""
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def has_permission(self, request, view):
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if request.method in permissions.SAFE_METHODS:
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return True
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journal_uid = view.kwargs['journal_uid']
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try:
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journal = view.get_journal_queryset().get(uid=journal_uid)
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member = journal.members.get(user=request.user)
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return not member.readOnly
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except Journal.DoesNotExist:
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# If the journal does not exist, we want to 404 later, not permission denied.
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return True
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except JournalMember.DoesNotExist:
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# Not being a member means we are the owner.
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return True
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