Tweet
Tweet

Slide 1

Slide 1 text

REST Easy

Slide 2

Slide 2 text

REST Easy 1. WHY REST 2. STATE OF REST 3. REST SECURITY 4. REST WELL TODAY 5. REST EASY TOMORROW

Slide 3

Slide 3 text

REST Easy 2. STATE OF REST 1. WHY REST 3. REST SECURITY 4. REST WELL TODAY 5. REST EASY TOMORROW

Slide 4

Slide 4 text

REST Easy 3. REST SECURITY 1. WHY REST 2. STATE OF REST 4. REST WELL TODAY 5. REST EASY TOMORROW

Slide 5

Slide 5 text

REST Easy 4. REST WELL TODAY 1. WHY REST 2. STATE OF REST 3. REST SECURITY 5. REST EASY TOMORROW

Slide 6

Slide 6 text

REST Easy 5. REST EASY TOMORROW 1. WHY REST 2. STATE OF REST 3. REST SECURITY 4. REST WELL TODAY

Slide 7

Slide 7 text

REST Easy 1. WHY REST 2. STATE OF REST 3. REST SECURITY 4. REST WELL TODAY 5. REST EASY TOMORROW

Slide 8

Slide 8 text

¯ SIMPLE ANSWER

Slide 9

Slide 9 text

REST Easy

Slide 10

Slide 10 text

¯ NUANCED ANSWER

Slide 11

Slide 11 text

REST Easy Display App Logic Datastores

Slide 12

Slide 12 text

REST Easy Display FRONTEND BACKEND App Logic Datastores

Slide 13

Slide 13 text

REST Easy FRONTEND BACKEND ← HTML • CSS • JavaScript Forms → ← → Display App Logic Datastores

Slide 14

Slide 14 text

REST Easy FRONTEND BACKEND ← → ← HTML • CSS • JavaScript Forms • AJAX → Display App Logic Datastores

Slide 15

Slide 15 text

REST Easy FRONTEND BACKEND ← → ← HTML • CSS • JavaScript Forms • AJAX → Display App Logic Datastores

Slide 16

Slide 16 text

REST Easy FRONTEND BACKEND ← → ← HTML • CSS • JavaScript ← REST → Display App Logic Datastores

Slide 17

Slide 17 text

REST Easy 2. STATE OF REST 1. WHY REST 3. REST SECURITY 4. REST WELL TODAY 5. REST EASY TOMORROW

Slide 18

Slide 18 text

REST Easy DJANGO REST FRAMEWORK

Slide 19

Slide 19 text

REST Easy SERIALIZERS class CatSerializer(serializers.ModelSerializer): class Meta: model = Cat fields = ['id', 'age', 'hair', 'grumpiness',]

Slide 20

Slide 20 text

REST Easy VIEWS class CatViewSet(viewsets.ModelViewSet): queryset = Cat.objects.all() serializer_class = CatSerializer

Slide 21

Slide 21 text

REST Easy AUTHENTICATION REST_FRAMEWORK = { 'DEFAULT_AUTHENTICATION_CLASSES': ( 'rest_framework.authentication.BasicAuthentication', 'rest_framework.authentication.SessionAuthentication', ) }

Slide 22

Slide 22 text

REST Easy PERMISSIONS class CatPermission(permissions.BasePermission): def has_permission(self, request, view): return request.is_cat_you_are_looking_for()

Slide 23

Slide 23 text

REST Easy 3. REST SECURITY 1. WHY REST 2. STATE OF REST 4. REST WELL TODAY 5. REST EASY TOMORROW

Slide 24

Slide 24 text

REST Easy FRONTEND BACKEND ← → Display App Logic Datastores

Slide 25

Slide 25 text

REST Easy FRONTEND BACKEND ← → Display App Logic Datastores

Slide 26

Slide 26 text

REST Easy INSECURE SECURE ← → Display App Logic Datastores

Slide 27

Slide 27 text

REST Easy INSECURE SECURE ← → Display App Logic Datastores

Slide 28

Slide 28 text

REST Easy AUTHENTICATION • HTTP Basic Auth

Slide 29

Slide 29 text

REST Easy AUTHENTICATION • HTTP Basic Auth • Django Session Auth

Slide 30

Slide 30 text

REST Easy AUTHENTICATION • HTTP Basic Auth • Django Session Auth • Token Auth

Slide 31

Slide 31 text

REST Easy AUTHENTICATION • HTTP Basic Auth • Django Session Auth • Token Auth • OAuth

Slide 32

Slide 32 text

REST Easy AUTHENTICATION • HTTP Basic Auth • Django Session Auth • Token Auth • OAuth • JSON Web Token Auth

Slide 33

Slide 33 text

REST Easy PERMISSIONS • Table Permissions

Slide 34

Slide 34 text

REST Easy PERMISSIONS • Table Permissions • Row Permissions

Slide 35

Slide 35 text

REST Easy PERMISSIONS • Table Permissions • Row Permissions • Column Permissions

Slide 36

Slide 36 text

REST Easy PERMISSIONS • Table Permissions • Row Permissions • Column Permissions • HTTP Verb Permissions

Slide 37

Slide 37 text

REST Easy 4. REST WELL TODAY 1. WHY REST 2. STATE OF REST 3. REST SECURITY 5. REST EASY TOMORROW

Slide 38

Slide 38 text

¯ SMALL COMPOSABLE PERMISSIONS

Slide 39

Slide 39 text

REST Easy HTTP VERBS class IsPOST(permissions.BasePermission): def has_permission(self, request, view): return request.method == 'POST' class IsPATCH(permissions.BasePermission): def has_permission(self, request, view): return request.method == 'PATCH' # Other HTTP verbs...

Slide 40

Slide 40 text

REST Easy HTTP VERBS class IsPOST(permissions.BasePermission): def has_permission(self, request, view): return request.method == 'POST' class IsPATCH(permissions.BasePermission): def has_permission(self, request, view): return request.method == 'PATCH' # Other HTTP verbs...

Slide 41

Slide 41 text

REST Easy HTTP VERBS class IsPOST(permissions.BasePermission): def has_permission(self, request, view): return request.method == 'POST' class IsPATCH(permissions.BasePermission): def has_permission(self, request, view): return request.method == 'PATCH' # Other HTTP verbs...

Slide 42

Slide 42 text

REST Easy HTTP VERBS class IsPOST(permissions.BasePermission): def has_permission(self, request, view): return request.method == 'POST' class IsPATCH(permissions.BasePermission): def has_permission(self, request, view): return request.method == 'PATCH' # Other HTTP verbs...

Slide 43

Slide 43 text

REST Easy HTTP VERBS class IsPOST(permissions.BasePermission): def has_permission(self, request, view): return request.method == 'POST' class IsPATCH(permissions.BasePermission): def has_permission(self, request, view): return request.method == 'PATCH' # Other HTTP verbs...

Slide 44

Slide 44 text

REST Easy HTTP VERBS class IsPOST(permissions.BasePermission): def has_permission(self, request, view): return request.method == 'POST' class IsPATCH(permissions.BasePermission): def has_permission(self, request, view): return request.method == 'PATCH' # Other HTTP verbs...

Slide 45

Slide 45 text

REST Easy USER STATUS class IsAuthenticated(permissions.BasePermission): def has_permission(self, request, view): return request.user.is_authenticated() class IsSuperuser(permissions.BasePermission): def has_permission(self, request, view): return request.user.is_authenticated() and \ request.user.is_superuser # Other authentication methods...

Slide 46

Slide 46 text

REST Easy USER STATUS class IsAuthenticated(permissions.BasePermission): def has_permission(self, request, view): return request.user.is_authenticated() class IsSuperuser(permissions.BasePermission): def has_permission(self, request, view): return request.user.is_authenticated() and \ request.user.is_superuser # Other authentication methods...

Slide 47

Slide 47 text

REST Easy USER STATUS class IsAuthenticated(permissions.BasePermission): def has_permission(self, request, view): return request.user.is_authenticated() class IsSuperuser(permissions.BasePermission): def has_permission(self, request, view): return request.user.is_authenticated() and \ request.user.is_superuser # Other authentication methods...

Slide 48

Slide 48 text

REST Easy USER STATUS class IsAuthenticated(permissions.BasePermission): def has_permission(self, request, view): return request.user.is_authenticated() class IsSuperuser(permissions.BasePermission): def has_permission(self, request, view): return request.user.is_authenticated() and \ request.user.is_superuser # Other authentication methods...

Slide 49

Slide 49 text

REST Easy USER STATUS class IsAuthenticated(permissions.BasePermission): def has_permission(self, request, view): return request.user.is_authenticated() class IsSuperuser(permissions.BasePermission): def has_permission(self, request, view): return request.user.is_authenticated() and \ request.user.is_superuser # Other authentication methods...

Slide 50

Slide 50 text

REST Easy USER STATUS class IsAuthenticated(permissions.BasePermission): def has_permission(self, request, view): return request.user.is_authenticated() class IsSuperuser(permissions.BasePermission): def has_permission(self, request, view): return request.user.is_authenticated() and \ request.user.is_superuser # Other authentication methods...

Slide 51

Slide 51 text

REST Easy OWNERSHIP class IsCatOwner(permissions.BasePermission): def has_permission(self, request, view): # WARNING: List-level permissions in get_queryset return True def has_object_permission(self, request, view, obj): return obj.owner == request.user # Ownership for other objects...

Slide 52

Slide 52 text

REST Easy OWNERSHIP class IsCatOwner(permissions.BasePermission): def has_permission(self, request, view): # WARNING: List-level permissions in get_queryset return True def has_object_permission(self, request, view, obj): return obj.owner == request.user # Ownership for other objects...

Slide 53

Slide 53 text

REST Easy OWNERSHIP class IsCatOwner(permissions.BasePermission): def has_permission(self, request, view): # WARNING: List-level permissions in get_queryset return True def has_object_permission(self, request, view, obj): return obj.owner == request.user # Ownership for other objects...

Slide 54

Slide 54 text

REST Easy OWNERSHIP class IsCatOwner(permissions.BasePermission): def has_permission(self, request, view): # WARNING: List-level permissions in get_queryset return True def has_object_permission(self, request, view, obj): return obj.owner == request.user # Ownership for other objects...

Slide 55

Slide 55 text

REST Easy OWNERSHIP class IsCatOwner(permissions.BasePermission): def has_permission(self, request, view): # WARNING: List-level permissions in get_queryset return True def has_object_permission(self, request, view, obj): return obj.owner == request.user # Ownership for other objects...

Slide 56

Slide 56 text

REST Easy OWNERSHIP class IsCatOwner(permissions.BasePermission): def has_permission(self, request, view): # WARNING: List-level permissions in get_queryset return True def has_object_permission(self, request, view, obj): return obj.owner == request.user # Ownership for other objects...

Slide 57

Slide 57 text

¯ PERMISSION POWER TOOLS

Slide 58

Slide 58 text

REST Easy FIELD RESTRICTION def IsFields(*fields): class IsFieldsPermission(permissions.BasePermission): _fields = set(fields) def has_permission(self, request, view): return set(request.data.keys()) <= self._fields def has_object_permission(self, request, view, obj): return set(request.data.keys()) <= self._fields return IsFieldsPermission

Slide 59

Slide 59 text

REST Easy FIELD RESTRICTION def IsFields(*fields): class IsFieldsPermission(permissions.BasePermission): _fields = set(fields) def has_permission(self, request, view): return set(request.data.keys()) <= self._fields def has_object_permission(self, request, view, obj): return set(request.data.keys()) <= self._fields return IsFieldsPermission

Slide 60

Slide 60 text

REST Easy FIELD RESTRICTION def IsFields(*fields): class IsFieldsPermission(permissions.BasePermission): _fields = set(fields) def has_permission(self, request, view): return set(request.data.keys()) <= self._fields def has_object_permission(self, request, view, obj): return set(request.data.keys()) <= self._fields return IsFieldsPermission

Slide 61

Slide 61 text

REST Easy FIELD RESTRICTION def IsFields(*fields): class IsFieldsPermission(permissions.BasePermission): _fields = set(fields) def has_permission(self, request, view): return set(request.data.keys()) <= self._fields def has_object_permission(self, request, view, obj): return set(request.data.keys()) <= self._fields return IsFieldsPermission

Slide 62

Slide 62 text

REST Easy FIELD RESTRICTION def IsFields(*fields): class IsFieldsPermission(permissions.BasePermission): _fields = set(fields) def has_permission(self, request, view): return set(request.data.keys()) <= self._fields def has_object_permission(self, request, view, obj): return set(request.data.keys()) <= self._fields return IsFieldsPermission

Slide 63

Slide 63 text

REST Easy FIELD RESTRICTION def IsFields(*fields): class IsFieldsPermission(permissions.BasePermission): _fields = set(fields) def has_permission(self, request, view): return set(request.data.keys()) <= self._fields def has_object_permission(self, request, view, obj): return set(request.data.keys()) <= self._fields return IsFieldsPermission

Slide 64

Slide 64 text

REST Easy FIELD RESTRICTION def IsFields(*fields): class IsFieldsPermission(permissions.BasePermission): _fields = set(fields) def has_permission(self, request, view): return set(request.data.keys()) <= self._fields def has_object_permission(self, request, view, obj): return set(request.data.keys()) <= self._fields return IsFieldsPermission

Slide 65

Slide 65 text

REST Easy FIELD RESTRICTION def IsFields(*fields): class IsFieldsPermission(permissions.BasePermission): _fields = set(fields) def has_permission(self, request, view): return set(request.data.keys()) <= self._fields def has_object_permission(self, request, view, obj): return set(request.data.keys()) <= self._fields return IsFieldsPermission

Slide 66

Slide 66 text

REST Easy FIELD RESTRICTION def IsFields(*fields): class IsFieldsPermission(permissions.BasePermission): _fields = set(fields) def has_permission(self, request, view): return set(request.data.keys()) <= self._fields def has_object_permission(self, request, view, obj): return set(request.data.keys()) <= self._fields return IsFieldsPermission

Slide 67

Slide 67 text

REST Easy REST CONDITION from rest_condition import And, Or, Not combined = Or( And(FooPerm, Not(BarPerm)), BazPerm, )

Slide 68

Slide 68 text

REST Easy REST CONDITION from rest_condition import And, Or, Not combined = Or( And(FooPerm, Not(BarPerm)), BazPerm, )

Slide 69

Slide 69 text

REST Easy REST CONDITION from rest_condition import And, Or, Not combined = Or( And(FooPerm, Not(BarPerm)), BazPerm, )

Slide 70

Slide 70 text

REST Easy REST CONDITION from rest_condition import And, Or, Not combined = Or( And(FooPerm, Not(BarPerm)), BazPerm, )

Slide 71

Slide 71 text

REST Easy REST CONDITION from rest_condition import And, Or, Not combined = Or( And(FooPerm, Not(BarPerm)), BazPerm, )

Slide 72

Slide 72 text

REST Easy REST CONDITION from rest_condition import And, Or, Not combined = Or( And(FooPerm, Not(BarPerm)), BazPerm, )

Slide 73

Slide 73 text

¯ BUILD COMPLEX PERMISSIONS

Slide 74

Slide 74 text

REST Easy COMPLEX PERMISSIONS class CatViewSet(viewsets.ModelViewSet): permission_classes = [Or( And( Or(IsGET, IsHEAD, IsOPTIONS), IsAuthenticated, ), And( Or(IsPOST, IsPATCH), IsCatOwner, IsFields('hair', 'grumpiness'), ), IsSuperuser, )]

Slide 75

Slide 75 text

REST Easy COMPLEX PERMISSIONS class CatViewSet(viewsets.ModelViewSet): permission_classes = [Or( And( Or(IsGET, IsHEAD, IsOPTIONS), IsAuthenticated, ), And( Or(IsPOST, IsPATCH), IsCatOwner, IsFields('hair', 'grumpiness'), ), IsSuperuser, )]

Slide 76

Slide 76 text

REST Easy COMPLEX PERMISSIONS class CatViewSet(viewsets.ModelViewSet): permission_classes = [Or( And( Or(IsGET, IsHEAD, IsOPTIONS), IsAuthenticated, ), And( Or(IsPOST, IsPATCH), IsCatOwner, IsFields('hair', 'grumpiness'), ), IsSuperuser, )]

Slide 77

Slide 77 text

REST Easy COMPLEX PERMISSIONS class CatViewSet(viewsets.ModelViewSet): permission_classes = [Or( And( Or(IsGET, IsHEAD, IsOPTIONS), IsAuthenticated, ), And( Or(IsPOST, IsPATCH), IsCatOwner, IsFields('hair', 'grumpiness'), ), IsSuperuser, )]

Slide 78

Slide 78 text

REST Easy COMPLEX PERMISSIONS class CatViewSet(viewsets.ModelViewSet): permission_classes = [Or( And( Or(IsGET, IsHEAD, IsOPTIONS), IsAuthenticated, ), And( Or(IsPOST, IsPATCH), IsCatOwner, IsFields('hair', 'grumpiness'), ), IsSuperuser, )]

Slide 79

Slide 79 text

REST Easy COMPLEX PERMISSIONS class CatViewSet(viewsets.ModelViewSet): permission_classes = [Or( And( Or(IsGET, IsHEAD, IsOPTIONS), IsAuthenticated, ), And( Or(IsPOST, IsPATCH), IsCatOwner, IsFields('hair', 'grumpiness'), ), IsSuperuser, )]

Slide 80

Slide 80 text

REST Easy COMPLEX PERMISSIONS class CatViewSet(viewsets.ModelViewSet): permission_classes = [Or( And( Or(IsGET, IsHEAD, IsOPTIONS), IsAuthenticated, ), And( Or(IsPOST, IsPATCH), IsCatOwner, IsFields('hair', 'grumpiness'), ), IsSuperuser, )]

Slide 81

Slide 81 text

REST Easy 5. REST EASY TOMORROW 1. WHY REST 2. STATE OF REST 3. REST SECURITY 4. REST WELL TODAY

Slide 82

Slide 82 text

¯ SECURITY PROBLEMS

Slide 83

Slide 83 text

REST Easy REST SECURITY ISSUES • Endpoint-based

Slide 84

Slide 84 text

REST Easy REST SECURITY ISSUES • Endpoint-based • Scattered code

Slide 85

Slide 85 text

REST Easy REST SECURITY ISSUES • Endpoint-based • Scattered code • Batteries not included

Slide 86

Slide 86 text

REST Easy REST SECURITY ISSUES • Endpoint-based • Scattered code • Batteries not included • Default-confused

Slide 87

Slide 87 text

¯ IMAGINE A WORLD...

Slide 88

Slide 88 text

REST Easy EASY PERMISSIONS class AnonymousUser(rest_permissions.Role): def is_active(self, request): return request.user.is_anonymous() def get_permissions(self): return { 'api.cats.CatViewSet': { 'list': True, 'retrieve': True, }, # Other permissions for cat owners... }

Slide 89

Slide 89 text

REST Easy EASY PERMISSIONS class AnonymousUser(rest_permissions.Role): def is_active(self, request): return request.user.is_anonymous() def get_permissions(self): return { 'api.cats.CatViewSet': { 'list': True, 'retrieve': True, }, # Other permissions for cat owners... }

Slide 90

Slide 90 text

REST Easy EASY PERMISSIONS class AnonymousUser(rest_permissions.Role): def is_active(self, request): return request.user.is_anonymous() def get_permissions(self): return { 'api.cats.CatViewSet': { 'list': True, 'retrieve': True, }, # Other permissions for cat owners... }

Slide 91

Slide 91 text

REST Easy EASY PERMISSIONS class AnonymousUser(rest_permissions.Role): def is_active(self, request): return request.user.is_anonymous() def get_permissions(self): return { 'api.cats.CatViewSet': { 'list': True, 'retrieve': True, }, # Other permissions for cat owners... }

Slide 92

Slide 92 text

REST Easy EASY PERMISSIONS class AnonymousUser(rest_permissions.Role): def is_active(self, request): return request.user.is_anonymous() def get_permissions(self): return { 'api.cats.CatViewSet': { 'list': True, 'retrieve': True, }, # Other permissions for cat owners... }

Slide 93

Slide 93 text

REST Easy EASY PERMISSIONS class AnonymousUser(rest_permissions.Role): def is_active(self, request): return request.user.is_anonymous() def get_permissions(self): return { 'api.cats.CatViewSet': { 'list': True, 'retrieve': True, }, # Other permissions for cat owners... }

Slide 94

Slide 94 text

REST Easy EASY PERMISSIONS class AnonymousUser(rest_permissions.Role): def is_active(self, request): return request.user.is_anonymous() def get_permissions(self): return { 'api.cats.CatViewSet': { 'list': True, 'retrieve': True, }, # Other permissions for cat owners... }

Slide 95

Slide 95 text

REST Easy EASY PERMISSIONS class AnonymousUser(rest_permissions.Role): def is_active(self, request): return request.user.is_anonymous() def get_permissions(self): return { 'api.cats.CatViewSet': { 'list': True, 'retrieve': True, }, # Other permissions for cat owners... }

Slide 96

Slide 96 text

REST Easy EASY PERMISSIONS class AnonymousUser(rest_permissions.Role): def is_active(self, request): return request.user.is_anonymous() def get_permissions(self): return { 'api.cats.CatViewSet': { 'list': True, 'retrieve': True, }, # Other permissions for cat owners... }

Slide 97

Slide 97 text

REST Easy Jeff Schenck CTO & Co-Founder twitter @jeffschenck email jeff@chewse.com