| // Copyright 2021 Google LLC |
| // |
| // 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 |
| // |
| // http://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. |
| // |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| #include "tink/jwt/internal/jwt_public_key_verify_wrapper.h" |
| |
| #include <string> |
| #include <utility> |
| |
| #include "absl/status/status.h" |
| #include "tink/jwt/internal/jwt_format.h" |
| #include "tink/jwt/internal/jwt_public_key_verify_internal.h" |
| #include "tink/jwt/jwt_public_key_verify.h" |
| #include "tink/primitive_set.h" |
| #include "tink/util/status.h" |
| #include "tink/util/statusor.h" |
| |
| namespace crypto { |
| namespace tink { |
| namespace jwt_internal { |
| |
| using google::crypto::tink::OutputPrefixType; |
| |
| namespace { |
| |
| class JwtPublicKeyVerifySetWrapper : public JwtPublicKeyVerify { |
| public: |
| explicit JwtPublicKeyVerifySetWrapper( |
| std::unique_ptr<PrimitiveSet<JwtPublicKeyVerifyInternal>> jwt_verify_set) |
| : jwt_verify_set_(std::move(jwt_verify_set)) {} |
| |
| crypto::tink::util::StatusOr<crypto::tink::VerifiedJwt> VerifyAndDecode( |
| absl::string_view compact, |
| const crypto::tink::JwtValidator& validator) const override; |
| |
| ~JwtPublicKeyVerifySetWrapper() override {} |
| |
| private: |
| std::unique_ptr<PrimitiveSet<JwtPublicKeyVerifyInternal>> jwt_verify_set_; |
| }; |
| |
| util::Status Validate( |
| PrimitiveSet<JwtPublicKeyVerifyInternal>* jwt_verify_set) { |
| if (jwt_verify_set == nullptr) { |
| return util::Status(absl::StatusCode::kInternal, |
| "jwt_verify_set must be non-NULL"); |
| } |
| for (const auto* entry : jwt_verify_set->get_all()) { |
| if ((entry->get_output_prefix_type() != OutputPrefixType::RAW) && |
| (entry->get_output_prefix_type() != OutputPrefixType::TINK)) { |
| return util::Status(absl::StatusCode::kInvalidArgument, |
| "all JWT keys must be either RAW or TINK"); |
| } |
| } |
| return util::OkStatus(); |
| } |
| |
| util::StatusOr<crypto::tink::VerifiedJwt> |
| JwtPublicKeyVerifySetWrapper::VerifyAndDecode( |
| absl::string_view compact, |
| const crypto::tink::JwtValidator& validator) const { |
| absl::optional<util::Status> interesting_status; |
| for (const auto* entry : jwt_verify_set_->get_all()) { |
| JwtPublicKeyVerifyInternal& jwt_verify = entry->get_primitive(); |
| absl::optional<std::string> kid = |
| GetKid(entry->get_key_id(), entry->get_output_prefix_type()); |
| util::StatusOr<VerifiedJwt> verified_jwt = |
| jwt_verify.VerifyAndDecodeWithKid(compact, validator, kid); |
| if (verified_jwt.ok()) { |
| return verified_jwt; |
| } else if (verified_jwt.status().code() != |
| absl::StatusCode::kUnauthenticated) { |
| // errors that are not the result of a signature verification |
| interesting_status = verified_jwt.status(); |
| } |
| } |
| if (interesting_status.has_value()) { |
| return *std::move(interesting_status); |
| } |
| return util::Status(absl::StatusCode::kInvalidArgument, |
| "verification failed"); |
| } |
| |
| } // namespace |
| |
| util::StatusOr<std::unique_ptr<JwtPublicKeyVerify>> |
| JwtPublicKeyVerifyWrapper::Wrap( |
| std::unique_ptr<PrimitiveSet<JwtPublicKeyVerifyInternal>> jwt_verify_set) |
| const { |
| util::Status status = Validate(jwt_verify_set.get()); |
| if (!status.ok()) return status; |
| std::unique_ptr<JwtPublicKeyVerify> jwt_verify = |
| absl::make_unique<JwtPublicKeyVerifySetWrapper>( |
| std::move(jwt_verify_set)); |
| return std::move(jwt_verify); |
| } |
| |
| } // namespace jwt_internal |
| } // namespace tink |
| } // namespace crypto |