| /** @file |
| * |
| * A brief file description |
| * |
| * @section license License |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| #pragma once |
| |
| #include <vector> |
| #include <unordered_map> |
| #include "QUICTypes.h" |
| #include "QUICFrameHandler.h" |
| #include "QUICFrameGenerator.h" |
| #include "QUICConnection.h" |
| |
| class QUICPathValidator : public QUICFrameHandler, public QUICFrameGenerator |
| { |
| public: |
| QUICPathValidator(const QUICConnectionInfoProvider &info, std::function<void(bool)> callback) |
| : _cinfo(info), _on_validation_callback(callback) |
| { |
| } |
| bool is_validating(const QUICPath &path) const; |
| bool is_validated(const QUICPath &path) const; |
| void validate(const QUICPath &path); |
| |
| // QUICFrameHandler |
| std::vector<QUICFrameType> interests() override; |
| QUICConnectionErrorUPtr handle_frame(QUICEncryptionLevel level, const QUICFrame &frame) override; |
| |
| // QUICFrameGenerator |
| bool will_generate_frame(QUICEncryptionLevel level, size_t current_packet_size, bool ack_eliciting, uint32_t seq_num) override; |
| QUICFrame *generate_frame(uint8_t *buf, QUICEncryptionLevel level, uint64_t connection_credit, uint16_t maximum_frame_size, |
| size_t current_packet_size, uint32_t seq_num) override; |
| |
| private: |
| enum class ValidationState : int { |
| NOT_VALIDATED, |
| VALIDATING, |
| VALIDATED, |
| }; |
| |
| class ValidationJob |
| { |
| public: |
| ValidationJob(){}; |
| ~ValidationJob(){}; |
| bool is_validating() const; |
| bool is_validated() const; |
| void start(); |
| bool validate_response(const uint8_t *data); |
| bool has_more_challenges() const; |
| const uint8_t *get_next_challenge() const; |
| void consume_challenge(); |
| |
| private: |
| ValidationState _state = ValidationState::NOT_VALIDATED; |
| uint8_t _outgoing_challenge[QUICPathChallengeFrame::DATA_LEN * 3]; |
| int _has_outgoing_challenge = 0; |
| |
| void _generate_challenge(); |
| }; |
| |
| const QUICConnectionInfoProvider &_cinfo; |
| std::unordered_map<QUICPath, ValidationJob, QUICPathHasher> _jobs; |
| |
| std::function<void(bool)> _on_validation_callback; |
| |
| uint32_t _latest_seq_num = 0; |
| std::vector<QUICPathValidationData> _incoming_challenges; |
| }; |