| /* |
| * Copyright (C) 2021 The Android Open Source Project |
| * |
| * 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. |
| */ |
| |
| #define LOG_TAG "Netd" |
| |
| #include "UnreachableNetwork.h" |
| |
| #include "RouteController.h" |
| |
| namespace android { |
| namespace net { |
| |
| // The unreachable network is used to reject traffic. It is used for system purposes only. |
| UnreachableNetwork::UnreachableNetwork(unsigned netId) : Network(netId) {} |
| |
| int UnreachableNetwork::addUsers(const UidRanges& uidRanges, uint32_t subPriority) { |
| if (!isValidSubPriority(subPriority) || !canAddUidRanges(uidRanges, subPriority)) { |
| return -EINVAL; |
| } |
| |
| int ret = RouteController::addUsersToUnreachableNetwork(mNetId, {{subPriority, uidRanges}}); |
| if (ret) { |
| ALOGE("failed to add users to unreachable network"); |
| return ret; |
| } |
| addToUidRangeMap(uidRanges, subPriority); |
| return 0; |
| } |
| |
| int UnreachableNetwork::removeUsers(const UidRanges& uidRanges, uint32_t subPriority) { |
| if (!isValidSubPriority(subPriority)) return -EINVAL; |
| |
| int ret = |
| RouteController::removeUsersFromUnreachableNetwork(mNetId, {{subPriority, uidRanges}}); |
| if (ret) { |
| ALOGE("failed to remove users from unreachable network"); |
| return ret; |
| } |
| removeFromUidRangeMap(uidRanges, subPriority); |
| return 0; |
| } |
| |
| bool UnreachableNetwork::isValidSubPriority(uint32_t priority) { |
| return priority >= UidRanges::DEFAULT_SUB_PRIORITY && |
| priority <= UidRanges::LOWEST_SUB_PRIORITY; |
| } |
| |
| } // namespace net |
| } // namespace android |