| /* |
| * Copyright (C) 2014 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 "Network.h" |
| |
| #include "RouteController.h" |
| #include "SockDiag.h" |
| #include "log/log.h" |
| |
| #include <android-base/strings.h> |
| #include <sstream> |
| |
| namespace android { |
| namespace net { |
| |
| Network::~Network() { |
| if (!mInterfaces.empty()) { |
| ALOGE("deleting network with netId %u without clearing its interfaces", mNetId); |
| } |
| } |
| |
| unsigned Network::getNetId() const { |
| return mNetId; |
| } |
| |
| bool Network::hasInterface(const std::string& interface) const { |
| return mInterfaces.find(interface) != mInterfaces.end(); |
| } |
| |
| const std::set<std::string>& Network::getInterfaces() const { |
| return mInterfaces; |
| } |
| |
| int Network::clearInterfaces() { |
| while (!mInterfaces.empty()) { |
| // Make a copy of the string, so removeInterface() doesn't lose its parameter when it |
| // removes the string from the set. |
| std::string interface = *mInterfaces.begin(); |
| if (int ret = removeInterface(interface)) { |
| return ret; |
| } |
| } |
| return 0; |
| } |
| |
| std::string Network::toString() const { |
| const char kSeparator[] = " "; |
| std::stringstream repr; |
| |
| repr << mNetId << kSeparator << getTypeString(); |
| |
| if (mInterfaces.size() > 0) { |
| repr << kSeparator << android::base::Join(mInterfaces, ","); |
| } |
| |
| return repr.str(); |
| } |
| |
| std::string Network::uidRangesToString() const { |
| if (mUidRangeMap.empty()) { |
| return ""; |
| } |
| |
| std::ostringstream result; |
| for (auto it = mUidRangeMap.begin(); it != mUidRangeMap.end(); ++it) { |
| result << "prio " << it->first << " " << it->second.toString(); |
| if (std::next(it) != mUidRangeMap.end()) result << "; "; |
| } |
| return result.str(); |
| } |
| |
| // Check if the user has been added to this network. If yes, the highest priority of matching |
| // setting is returned by subPriority. Thus caller can make choice among several matching |
| // networks. |
| bool Network::appliesToUser(uid_t uid, uint32_t* subPriority) const { |
| for (const auto& [priority, uidRanges] : mUidRangeMap) { |
| if (uidRanges.hasUid(uid)) { |
| *subPriority = priority; |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| void Network::addToUidRangeMap(const UidRanges& uidRanges, uint32_t subPriority) { |
| auto iter = mUidRangeMap.find(subPriority); |
| if (iter != mUidRangeMap.end()) { |
| iter->second.add(uidRanges); |
| } else { |
| mUidRangeMap[subPriority] = uidRanges; |
| } |
| } |
| |
| void Network::removeFromUidRangeMap(const UidRanges& uidRanges, uint32_t subPriority) { |
| auto iter = mUidRangeMap.find(subPriority); |
| if (iter != mUidRangeMap.end()) { |
| iter->second.remove(uidRanges); |
| if (iter->second.empty()) { |
| mUidRangeMap.erase(subPriority); |
| } |
| } else { |
| ALOGW("uidRanges with priority %u not found", subPriority); |
| } |
| } |
| |
| bool Network::canAddUidRanges(const UidRanges& uidRanges, uint32_t subPriority) const { |
| if (uidRanges.overlapsSelf()) { |
| ALOGE("uid range %s overlaps self", uidRanges.toString().c_str()); |
| return false; |
| } |
| |
| auto iter = mUidRangeMap.find(subPriority); |
| if (iter != mUidRangeMap.end() && uidRanges.overlaps(iter->second)) { |
| ALOGE("uid range %s overlaps priority %u %s", uidRanges.toString().c_str(), subPriority, |
| iter->second.toString().c_str()); |
| return false; |
| } |
| return true; |
| } |
| |
| bool Network::isSecure() const { |
| return mSecure; |
| } |
| |
| Network::Network(unsigned netId, bool secure) : mNetId(netId), mSecure(secure) {} |
| |
| } // namespace net |
| } // namespace android |