mirror of
https://github.com/kidfromjupiter/nearby.git
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109 lines
3.4 KiB
C++
109 lines
3.4 KiB
C++
// Copyright 2022 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "sharing/certificates/nearby_share_certificate_manager.h"
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#include <stdint.h>
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#include <optional>
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#include <vector>
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#include "absl/types/span.h"
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#include "sharing/certificates/nearby_share_encrypted_metadata_key.h"
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#include "sharing/certificates/nearby_share_private_certificate.h"
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#include "sharing/proto/enums.pb.h"
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namespace nearby {
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namespace sharing {
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using ::nearby::sharing::proto::DeviceVisibility;
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NearbyShareCertificateManager::NearbyShareCertificateManager() = default;
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NearbyShareCertificateManager::~NearbyShareCertificateManager() = default;
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void NearbyShareCertificateManager::AddObserver(Observer* observer) {
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observers_.AddObserver(observer);
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}
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void NearbyShareCertificateManager::RemoveObserver(Observer* observer) {
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observers_.RemoveObserver(observer);
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}
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void NearbyShareCertificateManager::StartScheduledTasks() {
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if (is_running_) return;
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is_running_ = true;
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OnStartScheduledTasks();
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}
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void NearbyShareCertificateManager::StopScheduledTasks() {
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if (!is_running_) return;
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is_running_ = false;
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OnStopScheduledTasks();
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}
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std::optional<NearbyShareEncryptedMetadataKey>
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NearbyShareCertificateManager::EncryptPrivateCertificateMetadataKey(
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DeviceVisibility visibility) {
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std::optional<NearbySharePrivateCertificate> cert =
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GetValidPrivateCertificate(visibility);
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if (!cert) return std::nullopt;
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std::optional<NearbyShareEncryptedMetadataKey> encrypted_key =
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cert->EncryptMetadataKey();
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// Every salt consumed to encrypt the metadata encryption key is tracked by
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// the NearbySharePrivateCertificate. Update the private certificate in
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// storage to reflect the new list of consumed salts.
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UpdatePrivateCertificateInStorage(*cert);
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return encrypted_key;
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}
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std::optional<std::vector<uint8_t>>
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NearbyShareCertificateManager::SignWithPrivateCertificate(
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DeviceVisibility visibility, absl::Span<const uint8_t> payload) const {
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std::optional<NearbySharePrivateCertificate> cert =
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GetValidPrivateCertificate(visibility);
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if (!cert) return std::nullopt;
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return cert->Sign(payload);
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}
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std::optional<std::vector<uint8_t>>
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NearbyShareCertificateManager::HashAuthenticationTokenWithPrivateCertificate(
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DeviceVisibility visibility,
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absl::Span<const uint8_t> authentication_token) const {
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std::optional<NearbySharePrivateCertificate> cert =
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GetValidPrivateCertificate(visibility);
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if (!cert) return std::nullopt;
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return cert->HashAuthenticationToken(authentication_token);
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}
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void NearbyShareCertificateManager::NotifyPublicCertificatesDownloaded() {
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for (const auto& observer : observers_.GetObservers())
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observer->OnPublicCertificatesDownloaded();
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}
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void NearbyShareCertificateManager::NotifyPrivateCertificatesChanged() {
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for (const auto& observer : observers_.GetObservers())
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observer->OnPrivateCertificatesChanged();
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}
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} // namespace sharing
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} // namespace nearby
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