assertion/references_validator.h

// Copyright 2026 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
//
//    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.
//

#ifndef THIRD_PARTY_CREDENTIO_ASSERTION_REFERENCES_VALIDATOR_H_
#define THIRD_PARTY_CREDENTIO_ASSERTION_REFERENCES_VALIDATOR_H_

#include "absl/log/die_if_null.h"
#include "absl/strings/string_view.h"
#include "assertion/hashed_uri_validator.h"
#include "proto/assertion.pb.h"
#include "validator/tracker.h"

namespace credentio {
// Validation of references according to
// https://spec.c2pa.org/specifications/specifications/2.4/specs/C2PA_Specification.html#_validation_of_references.
class ReferencesValidator {
 public:
  ReferencesValidator(const HashedUriValidator* hashed_uri_validator,
                      absl::string_view manifest_label,
                      ValidationTracker* tracker)
      : hashed_uri_validator_(*ABSL_DIE_IF_NULL(hashed_uri_validator)),
        manifest_label_(manifest_label),
        tracker_(*ABSL_DIE_IF_NULL(tracker)) {}
  bool Validate(const Assertion& assertion) const;

 private:
  const HashedUriValidator& hashed_uri_validator_;
  const absl::string_view manifest_label_;
  ValidationTracker& tracker_;
};
}  // namespace credentio

#endif  // THIRD_PARTY_CREDENTIO_ASSERTION_REFERENCES_VALIDATOR_H_