1 /*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "virtual_network.h"
17
18 #include <cinttypes>
19
20 #include "net_manager_constants.h"
21 #include "netmanager_base_common_utils.h"
22 #include "netnative_log_wrapper.h"
23 #include "route_manager.h"
24 #include "vpn_manager.h"
25 #include "vnic_manager.h"
26
27 namespace OHOS {
28 namespace nmd {
29
VirtualNetwork(uint16_t netId,bool hasDns)30 VirtualNetwork::VirtualNetwork(uint16_t netId, bool hasDns) : NetsysNetwork(netId), hasDns_(hasDns) {}
31
GetHasDns() const32 bool VirtualNetwork::GetHasDns() const
33 {
34 return hasDns_;
35 }
36
AddUids(const std::vector<UidRange> & uidVec)37 int32_t VirtualNetwork::AddUids(const std::vector<UidRange> &uidVec)
38 {
39 std::lock_guard<std::mutex> lock(mutex_);
40 NETNATIVE_LOG_D("VirtualNetwork::AddUids update uidRanges_");
41 auto middle = uidRanges_.insert(uidRanges_.end(), uidVec.begin(), uidVec.end());
42 std::inplace_merge(uidRanges_.begin(), middle, uidRanges_.end()); // restart sort
43
44 for (const auto &interface : interfaces_) {
45 if (RouteManager::AddUsersToVirtualNetwork(netId_, interface, uidVec)) {
46 NETNATIVE_LOGE("failed to add uids on interface %s of netId %u", interface.c_str(), netId_);
47 return NETMANAGER_ERROR;
48 }
49 }
50 return NETMANAGER_SUCCESS;
51 }
52
RemoveUids(const std::vector<UidRange> & uidVec)53 int32_t VirtualNetwork::RemoveUids(const std::vector<UidRange> &uidVec)
54 {
55 std::lock_guard<std::mutex> lock(mutex_);
56 auto end =
57 std::set_difference(uidRanges_.begin(), uidRanges_.end(), uidVec.begin(), uidVec.end(), uidRanges_.begin());
58 uidRanges_.erase(end, uidRanges_.end());
59
60 for (const auto &interface : interfaces_) {
61 if (RouteManager::RemoveUsersFromVirtualNetwork(netId_, interface, uidVec)) {
62 NETNATIVE_LOGE("failed to remove uids on interface %s of netId %u", interface.c_str(), netId_);
63 return NETMANAGER_ERROR;
64 }
65 }
66 return NETMANAGER_SUCCESS;
67 }
68
AddInterface(std::string & interfaceName)69 int32_t VirtualNetwork::AddInterface(std::string &interfaceName)
70 {
71 NETNATIVE_LOGI("Entry VirtualNetwork::AddInterface %{public}s", interfaceName.c_str());
72 if (ExistInterface(interfaceName)) {
73 NETNATIVE_LOGW("Failed to add interface %{public}s to netId_ %{public}u", interfaceName.c_str(), netId_);
74 return NETMANAGER_ERROR;
75 }
76
77 if (VpnManager::GetInstance().CreateVpnInterface()) {
78 NETNATIVE_LOGE("create vpn interface error");
79 return NETMANAGER_ERROR;
80 }
81
82 if (RouteManager::AddInterfaceToVirtualNetwork(netId_, interfaceName)) {
83 NETNATIVE_LOGE("Failed to add interface %{public}s to netId_ %{public}u", interfaceName.c_str(), netId_);
84 return NETMANAGER_ERROR;
85 }
86
87 std::lock_guard<std::mutex> lock(mutex_);
88 interfaces_.insert(interfaceName);
89 return NETMANAGER_SUCCESS;
90 }
91
RemoveInterface(std::string & interfaceName)92 int32_t VirtualNetwork::RemoveInterface(std::string &interfaceName)
93 {
94 NETNATIVE_LOGI("Entry VirtualNetwork::RemoveInterface %{public}s", interfaceName.c_str());
95 if (!ExistInterface(interfaceName)) {
96 NETNATIVE_LOGW("Failed to remove interface %{public}s to netId_ %{public}u", interfaceName.c_str(), netId_);
97 return NETMANAGER_SUCCESS;
98 }
99
100 if (RouteManager::RemoveInterfaceFromVirtualNetwork(netId_, interfaceName)) {
101 NETNATIVE_LOGE("Failed to remove interface %{public}s to netId_ %{public}u", interfaceName.c_str(), netId_);
102 return NETMANAGER_ERROR;
103 }
104
105 VpnManager::GetInstance().DestroyVpnInterface();
106
107 std::lock_guard<std::mutex> lock(mutex_);
108 interfaces_.erase(interfaceName);
109 return NETMANAGER_SUCCESS;
110 }
111 } // namespace nmd
112 } // namespace OHOS
113