From 799c43f688d365df30a37140156244b29707cb65 Mon Sep 17 00:00:00 2001 From: Yohann D'ANELLO Date: Thu, 10 Mar 2022 16:11:01 +0100 Subject: [PATCH] Parse input of search filters to prevent errors based on invalid regex, fixes #113 Signed-off-by: Yohann D'ANELLO --- apps/activity/api/views.py | 11 +++++----- apps/api/filters.py | 42 ++++++++++++++++++++++++++++++++++++ apps/api/tests.py | 8 ++++--- apps/api/viewsets.py | 4 ++-- apps/logs/api/views.py | 1 + apps/member/api/views.py | 10 +++++---- apps/note/api/views.py | 17 +++++++++------ apps/permission/api/views.py | 9 ++++---- apps/treasury/api/views.py | 13 +++++------ apps/wei/api/views.py | 16 ++++++++------ 10 files changed, 93 insertions(+), 38 deletions(-) create mode 100644 apps/api/filters.py diff --git a/apps/activity/api/views.py b/apps/activity/api/views.py index 97e6c40d..a5644fab 100644 --- a/apps/activity/api/views.py +++ b/apps/activity/api/views.py @@ -1,9 +1,10 @@ # Copyright (C) 2018-2024 by BDE ENS Paris-Saclay # SPDX-License-Identifier: GPL-3.0-or-later -from api.viewsets import ReadProtectedModelViewSet from django_filters.rest_framework import DjangoFilterBackend -from rest_framework.filters import SearchFilter + +from api.filters import RegexSafeSearchFilter +from api.viewsets import ReadProtectedModelViewSet from .serializers import ActivitySerializer, ActivityTypeSerializer, EntrySerializer, GuestSerializer from ..models import Activity, ActivityType, Entry, Guest @@ -29,7 +30,7 @@ class ActivityViewSet(ReadProtectedModelViewSet): """ queryset = Activity.objects.order_by('id') serializer_class = ActivitySerializer - filter_backends = [DjangoFilterBackend, SearchFilter] + filter_backends = [DjangoFilterBackend, RegexSafeSearchFilter] filterset_fields = ['name', 'description', 'activity_type', 'location', 'creater', 'organizer', 'attendees_club', 'date_start', 'date_end', 'valid', 'open', ] search_fields = ['$name', '$description', '$location', '$creater__last_name', '$creater__first_name', @@ -47,7 +48,7 @@ class GuestViewSet(ReadProtectedModelViewSet): """ queryset = Guest.objects.order_by('id') serializer_class = GuestSerializer - filter_backends = [DjangoFilterBackend, SearchFilter] + filter_backends = [DjangoFilterBackend, RegexSafeSearchFilter] filterset_fields = ['activity', 'activity__name', 'last_name', 'first_name', 'inviter', 'inviter__alias__name', 'inviter__alias__normalized_name', ] search_fields = ['$activity__name', '$last_name', '$first_name', '$inviter__user__email', '$inviter__alias__name', @@ -62,7 +63,7 @@ class EntryViewSet(ReadProtectedModelViewSet): """ queryset = Entry.objects.order_by('id') serializer_class = EntrySerializer - filter_backends = [DjangoFilterBackend, SearchFilter] + filter_backends = [DjangoFilterBackend, RegexSafeSearchFilter] filterset_fields = ['activity', 'time', 'note', 'guest', ] search_fields = ['$activity__name', '$note__user__email', '$note__alias__name', '$note__alias__normalized_name', '$guest__last_name', '$guest__first_name', ] diff --git a/apps/api/filters.py b/apps/api/filters.py new file mode 100644 index 00000000..cb51c37c --- /dev/null +++ b/apps/api/filters.py @@ -0,0 +1,42 @@ +import re +from functools import lru_cache + +from rest_framework.filters import SearchFilter + + +class RegexSafeSearchFilter(SearchFilter): + @lru_cache + def validate_regex(self, search_term) -> bool: + try: + re.compile(search_term) + return True + except re.error: + return False + + def get_search_fields(self, view, request): + """ + Ensure that given regex are valid. + If not, we consider that the user is trying to search by substring. + """ + search_fields = super().get_search_fields(view, request) + search_terms = self.get_search_terms(request) + + for search_term in search_terms: + if not self.validate_regex(search_term): + # Invalid regex. We assume we don't query by regex but by substring. + search_fields = [f.replace('$', '') for f in search_fields] + break + + return search_fields + + def get_search_terms(self, request): + """ + Ensure that search field is a valid regex query. If not, we remove extra characters. + """ + terms = super().get_search_terms(request) + if not all(self.validate_regex(term) for term in terms): + # Invalid regex. If a ^ is prefixed to the search term, we remove it. + terms = [term[1:] if term[0] == '^' else term for term in terms] + # Same for dollars. + terms = [term[:-1] if term[-1] == '$' else term for term in terms] + return terms diff --git a/apps/api/tests.py b/apps/api/tests.py index 285acc46..83d9d936 100644 --- a/apps/api/tests.py +++ b/apps/api/tests.py @@ -12,11 +12,13 @@ from django.contrib.contenttypes.models import ContentType from django.db.models.fields.files import ImageFieldFile from django.test import TestCase from django_filters.rest_framework import DjangoFilterBackend +from phonenumbers import PhoneNumber +from rest_framework.filters import OrderingFilter + +from api.filters import RegexSafeSearchFilter from member.models import Membership, Club from note.models import NoteClub, NoteUser, Alias, Note from permission.models import PermissionMask, Permission, Role -from phonenumbers import PhoneNumber -from rest_framework.filters import SearchFilter, OrderingFilter from .viewsets import ContentTypeViewSet, UserViewSet @@ -87,7 +89,7 @@ class TestAPI(TestCase): resp = self.client.get(url + f"?ordering=-{field}") self.assertEqual(resp.status_code, 200) - if SearchFilter in backends: + if RegexSafeSearchFilter in backends: # Basic search for field in viewset.search_fields: obj = self.fix_note_object(obj, field) diff --git a/apps/api/viewsets.py b/apps/api/viewsets.py index 35dad92d..341af617 100644 --- a/apps/api/viewsets.py +++ b/apps/api/viewsets.py @@ -6,11 +6,11 @@ from django_filters.rest_framework import DjangoFilterBackend from django.db.models import Q from django.conf import settings from django.contrib.auth.models import User -from rest_framework.filters import SearchFilter from rest_framework.viewsets import ReadOnlyModelViewSet, ModelViewSet from permission.backends import PermissionBackend from note.models import Alias +from .filters import RegexSafeSearchFilter from .serializers import UserSerializer, ContentTypeSerializer @@ -107,6 +107,6 @@ class ContentTypeViewSet(ReadOnlyModelViewSet): """ queryset = ContentType.objects.order_by('id') serializer_class = ContentTypeSerializer - filter_backends = [DjangoFilterBackend, SearchFilter] + filter_backends = [DjangoFilterBackend, RegexSafeSearchFilter] filterset_fields = ['id', 'app_label', 'model', ] search_fields = ['$app_label', '$model', ] diff --git a/apps/logs/api/views.py b/apps/logs/api/views.py index 655a473a..bf5aa8a5 100644 --- a/apps/logs/api/views.py +++ b/apps/logs/api/views.py @@ -3,6 +3,7 @@ from django_filters.rest_framework import DjangoFilterBackend from rest_framework.filters import OrderingFilter + from api.viewsets import ReadOnlyProtectedModelViewSet from .serializers import ChangelogSerializer diff --git a/apps/member/api/views.py b/apps/member/api/views.py index ab6146ed..5e4e4667 100644 --- a/apps/member/api/views.py +++ b/apps/member/api/views.py @@ -2,7 +2,9 @@ # SPDX-License-Identifier: GPL-3.0-or-later from django_filters.rest_framework import DjangoFilterBackend -from rest_framework.filters import OrderingFilter, SearchFilter +from rest_framework.filters import OrderingFilter + +from api.filters import RegexSafeSearchFilter from api.viewsets import ReadProtectedModelViewSet from .serializers import ProfileSerializer, ClubSerializer, MembershipSerializer @@ -17,7 +19,7 @@ class ProfileViewSet(ReadProtectedModelViewSet): """ queryset = Profile.objects.order_by('id') serializer_class = ProfileSerializer - filter_backends = [DjangoFilterBackend, SearchFilter] + filter_backends = [DjangoFilterBackend, RegexSafeSearchFilter] filterset_fields = ['user', 'user__first_name', 'user__last_name', 'user__username', 'user__email', 'user__note__alias__name', 'user__note__alias__normalized_name', 'phone_number', "section", 'department', 'promotion', 'address', 'paid', 'ml_events_registration', 'ml_sport_registration', @@ -34,7 +36,7 @@ class ClubViewSet(ReadProtectedModelViewSet): """ queryset = Club.objects.order_by('id') serializer_class = ClubSerializer - filter_backends = [DjangoFilterBackend, SearchFilter] + filter_backends = [DjangoFilterBackend, RegexSafeSearchFilter] filterset_fields = ['name', 'email', 'note__alias__name', 'note__alias__normalized_name', 'parent_club', 'parent_club__name', 'require_memberships', 'membership_fee_paid', 'membership_fee_unpaid', 'membership_duration', 'membership_start', 'membership_end', ] @@ -49,7 +51,7 @@ class MembershipViewSet(ReadProtectedModelViewSet): """ queryset = Membership.objects.order_by('id') serializer_class = MembershipSerializer - filter_backends = [DjangoFilterBackend, OrderingFilter, SearchFilter] + filter_backends = [DjangoFilterBackend, OrderingFilter, RegexSafeSearchFilter] filterset_fields = ['club__name', 'club__email', 'club__note__alias__name', 'club__note__alias__normalized_name', 'user__username', 'user__last_name', 'user__first_name', 'user__email', 'user__note__alias__name', 'user__note__alias__normalized_name', diff --git a/apps/note/api/views.py b/apps/note/api/views.py index 0aba9adc..4d39a7ce 100644 --- a/apps/note/api/views.py +++ b/apps/note/api/views.py @@ -1,15 +1,18 @@ # Copyright (C) 2018-2024 by BDE ENS Paris-Saclay # SPDX-License-Identifier: GPL-3.0-or-later + import re from django.conf import settings from django.db.models import Q from django.core.exceptions import ValidationError from django_filters.rest_framework import DjangoFilterBackend -from rest_framework.filters import OrderingFilter, SearchFilter +from rest_framework.filters import OrderingFilter from rest_framework import viewsets from rest_framework.response import Response from rest_framework import status + +from api.filters import RegexSafeSearchFilter from api.viewsets import ReadProtectedModelViewSet, ReadOnlyProtectedModelViewSet from permission.backends import PermissionBackend @@ -29,7 +32,7 @@ class NotePolymorphicViewSet(ReadProtectedModelViewSet): """ queryset = Note.objects.order_by('id') serializer_class = NotePolymorphicSerializer - filter_backends = [DjangoFilterBackend, SearchFilter, OrderingFilter] + filter_backends = [DjangoFilterBackend, RegexSafeSearchFilter, OrderingFilter] filterset_fields = ['alias__name', 'polymorphic_ctype', 'is_active', 'balance', 'last_negative', 'created_at', ] search_fields = ['$alias__normalized_name', '$alias__name', '$polymorphic_ctype__model', '$noteuser__user__last_name', '$noteuser__user__first_name', '$noteuser__user__email', @@ -95,7 +98,7 @@ class AliasViewSet(ReadProtectedModelViewSet): """ queryset = Alias.objects serializer_class = AliasSerializer - filter_backends = [SearchFilter, DjangoFilterBackend, OrderingFilter] + filter_backends = [RegexSafeSearchFilter, DjangoFilterBackend, OrderingFilter] search_fields = ['$normalized_name', '$name', '$note__polymorphic_ctype__model', ] filterset_fields = ['name', 'normalized_name', 'note', 'note__noteuser__user', 'note__noteclub__club', 'note__polymorphic_ctype__model', ] @@ -147,7 +150,7 @@ class AliasViewSet(ReadProtectedModelViewSet): class ConsumerViewSet(ReadOnlyProtectedModelViewSet): queryset = Alias.objects serializer_class = ConsumerSerializer - filter_backends = [SearchFilter, OrderingFilter, DjangoFilterBackend] + filter_backends = [RegexSafeSearchFilter, OrderingFilter, DjangoFilterBackend] search_fields = ['$normalized_name', '$name', '$note__polymorphic_ctype__model', ] filterset_fields = ['name', 'normalized_name', 'note', 'note__noteuser__user', 'note__noteclub__club', 'note__polymorphic_ctype__model', ] @@ -207,7 +210,7 @@ class TemplateCategoryViewSet(ReadProtectedModelViewSet): """ queryset = TemplateCategory.objects.order_by('name') serializer_class = TemplateCategorySerializer - filter_backends = [DjangoFilterBackend, SearchFilter] + filter_backends = [DjangoFilterBackend, RegexSafeSearchFilter] filterset_fields = ['name', 'templates', 'templates__name'] search_fields = ['$name', '$templates__name', ] @@ -220,7 +223,7 @@ class TransactionTemplateViewSet(viewsets.ModelViewSet): """ queryset = TransactionTemplate.objects.order_by('name') serializer_class = TransactionTemplateSerializer - filter_backends = [SearchFilter, DjangoFilterBackend, OrderingFilter] + filter_backends = [RegexSafeSearchFilter, DjangoFilterBackend, OrderingFilter] filterset_fields = ['name', 'amount', 'display', 'category', 'category__name', ] search_fields = ['$name', '$category__name', ] ordering_fields = ['amount', ] @@ -234,7 +237,7 @@ class TransactionViewSet(ReadProtectedModelViewSet): """ queryset = Transaction.objects.order_by('-created_at') serializer_class = TransactionPolymorphicSerializer - filter_backends = [SearchFilter, DjangoFilterBackend, OrderingFilter] + filter_backends = [RegexSafeSearchFilter, DjangoFilterBackend, OrderingFilter] filterset_fields = ['source', 'source_alias', 'source__alias__name', 'source__alias__normalized_name', 'destination', 'destination_alias', 'destination__alias__name', 'destination__alias__normalized_name', 'quantity', 'polymorphic_ctype', 'amount', diff --git a/apps/permission/api/views.py b/apps/permission/api/views.py index 5296e29b..1dd18899 100644 --- a/apps/permission/api/views.py +++ b/apps/permission/api/views.py @@ -1,9 +1,10 @@ # Copyright (C) 2018-2024 by BDE ENS Paris-Saclay # SPDX-License-Identifier: GPL-3.0-or-later -from api.viewsets import ReadOnlyProtectedModelViewSet from django_filters.rest_framework import DjangoFilterBackend -from rest_framework.filters import SearchFilter + +from api.filters import RegexSafeSearchFilter +from api.viewsets import ReadOnlyProtectedModelViewSet from .serializers import PermissionSerializer, RoleSerializer from ..models import Permission, Role @@ -17,7 +18,7 @@ class PermissionViewSet(ReadOnlyProtectedModelViewSet): """ queryset = Permission.objects.order_by('id') serializer_class = PermissionSerializer - filter_backends = [DjangoFilterBackend, SearchFilter] + filter_backends = [DjangoFilterBackend, RegexSafeSearchFilter] filterset_fields = ['model', 'type', 'query', 'mask', 'field', 'permanent', ] search_fields = ['$model__name', '$query', '$description', ] @@ -30,6 +31,6 @@ class RoleViewSet(ReadOnlyProtectedModelViewSet): """ queryset = Role.objects.order_by('id') serializer_class = RoleSerializer - filter_backends = [DjangoFilterBackend, SearchFilter] + filter_backends = [DjangoFilterBackend, RegexSafeSearchFilter] filterset_fields = ['name', 'permissions', 'for_club', 'memberships__user', ] search_fields = ['$name', '$for_club__name', ] diff --git a/apps/treasury/api/views.py b/apps/treasury/api/views.py index 9b1825d1..8cdb79d8 100644 --- a/apps/treasury/api/views.py +++ b/apps/treasury/api/views.py @@ -2,7 +2,8 @@ # SPDX-License-Identifier: GPL-3.0-or-later from django_filters.rest_framework import DjangoFilterBackend -from rest_framework.filters import SearchFilter + +from api.filters import RegexSafeSearchFilter from api.viewsets import ReadProtectedModelViewSet from .serializers import InvoiceSerializer, ProductSerializer, RemittanceTypeSerializer, RemittanceSerializer, \ @@ -18,7 +19,7 @@ class InvoiceViewSet(ReadProtectedModelViewSet): """ queryset = Invoice.objects.order_by('id') serializer_class = InvoiceSerializer - filter_backends = [DjangoFilterBackend, SearchFilter] + filter_backends = [DjangoFilterBackend, RegexSafeSearchFilter] filterset_fields = ['bde', 'object', 'description', 'name', 'address', 'date', 'acquitted', 'locked', ] search_fields = ['$object', '$description', '$name', '$address', ] @@ -31,7 +32,7 @@ class ProductViewSet(ReadProtectedModelViewSet): """ queryset = Product.objects.order_by('invoice_id', 'id') serializer_class = ProductSerializer - filter_backends = [DjangoFilterBackend, SearchFilter] + filter_backends = [DjangoFilterBackend, RegexSafeSearchFilter] filterset_fields = ['invoice', 'designation', 'quantity', 'amount', ] search_fields = ['$designation', '$invoice__object', ] @@ -44,7 +45,7 @@ class RemittanceTypeViewSet(ReadProtectedModelViewSet): """ queryset = RemittanceType.objects.order_by('id') serializer_class = RemittanceTypeSerializer - filter_backends = [DjangoFilterBackend, SearchFilter] + filter_backends = [DjangoFilterBackend, RegexSafeSearchFilter] filterset_fields = ['note', ] search_fields = ['$note__special_type', ] @@ -57,7 +58,7 @@ class RemittanceViewSet(ReadProtectedModelViewSet): """ queryset = Remittance.objects.order_by('id') serializer_class = RemittanceSerializer - filter_backends = [DjangoFilterBackend, SearchFilter] + filter_backends = [DjangoFilterBackend, RegexSafeSearchFilter] filterset_fields = ['date', 'remittance_type', 'comment', 'closed', 'transaction_proxies__transaction', ] search_fields = ['$remittance_type__note__special_type', '$comment', ] @@ -70,7 +71,7 @@ class SogeCreditViewSet(ReadProtectedModelViewSet): """ queryset = SogeCredit.objects.order_by('id') serializer_class = SogeCreditSerializer - filter_backends = [DjangoFilterBackend, SearchFilter] + filter_backends = [DjangoFilterBackend, RegexSafeSearchFilter] filterset_fields = ['user', 'user__last_name', 'user__first_name', 'user__email', 'user__note__alias__name', 'user__note__alias__normalized_name', 'transactions', 'credit_transaction', ] search_fields = ['$user__last_name', '$user__first_name', '$user__email', '$user__note__alias__name', diff --git a/apps/wei/api/views.py b/apps/wei/api/views.py index e16a5374..88189d70 100644 --- a/apps/wei/api/views.py +++ b/apps/wei/api/views.py @@ -2,7 +2,9 @@ # SPDX-License-Identifier: GPL-3.0-or-later from django_filters.rest_framework import DjangoFilterBackend -from rest_framework.filters import OrderingFilter, SearchFilter +from rest_framework.filters import OrderingFilter + +from api.filters import RegexSafeSearchFilter from api.viewsets import ReadProtectedModelViewSet from .serializers import WEIClubSerializer, BusSerializer, BusTeamSerializer, WEIRoleSerializer, \ @@ -18,7 +20,7 @@ class WEIClubViewSet(ReadProtectedModelViewSet): """ queryset = WEIClub.objects.order_by('id') serializer_class = WEIClubSerializer - filter_backends = [DjangoFilterBackend, SearchFilter] + filter_backends = [DjangoFilterBackend, RegexSafeSearchFilter] filterset_fields = ['name', 'year', 'date_start', 'date_end', 'email', 'note__alias__name', 'note__alias__normalized_name', 'parent_club', 'parent_club__name', 'require_memberships', 'membership_fee_paid', 'membership_fee_unpaid', 'membership_duration', 'membership_start', @@ -34,7 +36,7 @@ class BusViewSet(ReadProtectedModelViewSet): """ queryset = Bus.objects.order_by('id') serializer_class = BusSerializer - filter_backends = [DjangoFilterBackend, SearchFilter] + filter_backends = [DjangoFilterBackend, RegexSafeSearchFilter] filterset_fields = ['name', 'wei', 'description', ] search_fields = ['$name', '$wei__name', '$description', ] @@ -47,7 +49,7 @@ class BusTeamViewSet(ReadProtectedModelViewSet): """ queryset = BusTeam.objects.order_by('id') serializer_class = BusTeamSerializer - filter_backends = [DjangoFilterBackend, SearchFilter] + filter_backends = [DjangoFilterBackend, RegexSafeSearchFilter] filterset_fields = ['name', 'bus', 'color', 'description', 'bus__wei', ] search_fields = ['$name', '$bus__name', '$bus__wei__name', '$description', ] @@ -60,7 +62,7 @@ class WEIRoleViewSet(ReadProtectedModelViewSet): """ queryset = WEIRole.objects.order_by('id') serializer_class = WEIRoleSerializer - filter_backends = [DjangoFilterBackend, SearchFilter] + filter_backends = [DjangoFilterBackend, RegexSafeSearchFilter] filterset_fields = ['name', 'permissions', 'memberships', ] search_fields = ['$name', ] @@ -73,7 +75,7 @@ class WEIRegistrationViewSet(ReadProtectedModelViewSet): """ queryset = WEIRegistration.objects.order_by('id') serializer_class = WEIRegistrationSerializer - filter_backends = [DjangoFilterBackend, SearchFilter] + filter_backends = [DjangoFilterBackend, RegexSafeSearchFilter] filterset_fields = ['user', 'user__username', 'user__first_name', 'user__last_name', 'user__email', 'user__note__alias__name', 'user__note__alias__normalized_name', 'wei', 'wei__name', 'wei__email', 'wei__year', 'soge_credit', 'caution_check', 'birth_date', 'gender', @@ -92,7 +94,7 @@ class WEIMembershipViewSet(ReadProtectedModelViewSet): """ queryset = WEIMembership.objects.order_by('id') serializer_class = WEIMembershipSerializer - filter_backends = [DjangoFilterBackend, OrderingFilter, SearchFilter] + filter_backends = [DjangoFilterBackend, OrderingFilter, RegexSafeSearchFilter] filterset_fields = ['club__name', 'club__email', 'club__note__alias__name', 'club__note__alias__normalized_name', 'user__username', 'user__last_name', 'user__first_name', 'user__email', 'user__note__alias__name',