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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,160 @@ | ||
| /* | ||
| * Copyright Cedar Contributors | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * https://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| #![no_main] | ||
|
|
||
| use libfuzzer_sys::arbitrary::{self, MaxRecursionReached}; | ||
| use prost::Message; | ||
|
|
||
| use crate::arbitrary::Arbitrary; | ||
| use crate::arbitrary::Unstructured; | ||
| use cedar_drt::{AuthorizationRequestMsg, OwnedAuthorizationRequestMsg}; | ||
| use cedar_drt_inner::{fuzz_target, schemas::Equiv}; | ||
| use cedar_policy_core::{ | ||
| ast, entities::Entities, entities::NoEntitiesSchema, entities::TCComputation, | ||
| extensions::Extensions, | ||
| }; | ||
| use cedar_policy_generators::{ | ||
| abac::ABACPolicy, abac::ABACRequest, hierarchy::HierarchyGenerator, schema::Schema, | ||
| settings::ABACSettings, | ||
| }; | ||
|
|
||
| #[derive(Debug)] | ||
| struct FuzzTargetInput { | ||
| request: ABACRequest, | ||
| policy: ABACPolicy, | ||
| entities: Entities, | ||
| schema: cedar_policy_validator::ValidatorSchema, | ||
| } | ||
|
|
||
| // settings for this fuzz target | ||
| // copy-pasted from abac.rs | ||
| const SETTINGS: ABACSettings = ABACSettings { | ||
| match_types: false, | ||
| enable_extensions: true, | ||
| max_depth: 7, | ||
| max_width: 7, | ||
| enable_additional_attributes: true, | ||
| enable_like: true, | ||
| enable_action_groups_and_attrs: true, | ||
| enable_arbitrary_func_call: false, | ||
| enable_unknowns: false, | ||
| enable_action_in_constraints: true, | ||
| enable_unspecified_apply_spec: true, | ||
| }; | ||
|
|
||
| impl<'a> Arbitrary<'a> for FuzzTargetInput { | ||
| fn arbitrary(u: &mut Unstructured<'a>) -> arbitrary::Result<Self> { | ||
| let schema: Schema = Schema::arbitrary(SETTINGS.clone(), u)?; | ||
| let hierarchy = schema.arbitrary_hierarchy(u)?; | ||
| let request = schema.arbitrary_request(&hierarchy, u)?; | ||
| let policy = schema.arbitrary_policy(&hierarchy, u)?; | ||
|
|
||
| let entities: Entities = Entities::from_entities( | ||
| hierarchy.entities().map(|x| x.to_owned()), | ||
| None::<&NoEntitiesSchema>, | ||
| TCComputation::AssumeAlreadyComputed, | ||
| Extensions::none(), | ||
| ) | ||
| .expect("Failed to create entities"); | ||
|
|
||
| Ok(Self { | ||
| request, | ||
| policy, | ||
| entities, | ||
| schema: schema | ||
| .try_into() | ||
| .expect("Failed to convert schema to ValidatorSchema"), | ||
| }) | ||
| } | ||
|
|
||
| fn try_size_hint(depth: usize) -> Result<(usize, Option<usize>), MaxRecursionReached> { | ||
| Ok(arbitrary::size_hint::and_all(&[ | ||
| Schema::arbitrary_size_hint(depth)?, | ||
| HierarchyGenerator::size_hint(depth), | ||
| Schema::arbitrary_policy_size_hint(&SETTINGS, depth), | ||
| ])) | ||
| } | ||
| } | ||
|
|
||
| fuzz_target!(|input: FuzzTargetInput| { | ||
| let s_policy: ast::StaticPolicy = input.policy.into(); | ||
| let mut policies: ast::PolicySet = ast::PolicySet::new(); | ||
| policies.add(s_policy.into()).expect("Failed to add policy"); | ||
| roundtrip_authz_request_msg(AuthorizationRequestMsg { | ||
| request: &input.request.into(), | ||
| policies: &policies, | ||
| entities: &input.entities, | ||
| }); | ||
| roundtrip_schema(input.schema); | ||
| }); | ||
|
|
||
| fn roundtrip_authz_request_msg(auth_request: AuthorizationRequestMsg) { | ||
| // AST -> Protobuf | ||
| let auth_request_proto = cedar_drt::proto::AuthorizationRequestMsg::from(&auth_request); | ||
|
|
||
| // Protobuf -> Bytes | ||
| let buf = auth_request_proto.encode_to_vec(); | ||
|
|
||
| // Bytes -> Protobuf | ||
| let roundtripped_proto = cedar_drt::proto::AuthorizationRequestMsg::decode(&buf[..]) | ||
| .expect("Failed to deserialize AuthorizationRequestMsg from proto"); | ||
|
|
||
| // Protobuf -> AST | ||
| let roundtripped = OwnedAuthorizationRequestMsg::from(roundtripped_proto); | ||
|
|
||
| // Checking request equality (ignores loc field) | ||
| assert_eq!( | ||
| auth_request.request.principal().uid(), | ||
| roundtripped.request.principal().uid() | ||
| ); | ||
| assert_eq!( | ||
| auth_request.request.action().uid(), | ||
| roundtripped.request.action().uid() | ||
| ); | ||
| assert_eq!( | ||
| auth_request.request.resource().uid(), | ||
| roundtripped.request.resource().uid() | ||
| ); | ||
| assert_eq!( | ||
| auth_request.request.context(), | ||
| roundtripped.request.context() | ||
| ); | ||
|
|
||
| // Checking policy set equality | ||
| assert_eq!(auth_request.policies, &roundtripped.policies); | ||
|
|
||
| // Checking entities equality | ||
| assert_eq!(auth_request.entities, &roundtripped.entities); | ||
| } | ||
|
|
||
| fn roundtrip_schema(schema: cedar_policy_validator::ValidatorSchema) { | ||
| // AST -> Protobuf bytes | ||
| let schema_proto = cedar_policy_validator::proto::ValidatorSchema::from(&schema); | ||
|
|
||
| // Protobuf -> Bytes | ||
| let buf = schema_proto.encode_to_vec(); | ||
|
|
||
| // Bytes -> Protobuf | ||
| let roundtripped_proto = cedar_policy_validator::proto::ValidatorSchema::decode(&buf[..]) | ||
| .expect("Failed to deserialize Schema from proto"); | ||
|
|
||
| // Protobuf -> AST | ||
| let roundtripped = cedar_policy_validator::ValidatorSchema::from(&roundtripped_proto); | ||
|
|
||
| // Checking schema equivalence | ||
| Equiv::equiv(&schema, &roundtripped).unwrap(); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,16 @@ | ||
| syntax = "proto3"; | ||
| package cedar_drt; | ||
| import "AST.proto"; | ||
| import "Validator.proto"; | ||
|
|
||
| message AuthorizationRequestMsg { | ||
| cedar_policy_core.Request request = 1; | ||
| cedar_policy_core.LiteralPolicySet policies = 2; | ||
| cedar_policy_core.Entities entities = 3; | ||
| } | ||
|
|
||
| message ValidationRequestMsg { | ||
| cedar_policy_validator.ValidatorSchema schema = 1; | ||
| cedar_policy_core.LiteralPolicySet policies = 2; | ||
| cedar_policy_validator.ValidationMode mode = 3; | ||
| } |
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