1 /*
2 * Copyright (c) 2024 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 #include "netfirewall_policy_manager.h"
16
17 #include "net_manager_constants.h"
18 #include "netfirewall_rule_manager.h"
19 #include "netfirewall_rule_native_helper.h"
20 #include "netmanager_base_common_utils.h"
21 #include "netsys_controller.h"
22 #include "os_account_manager.h"
23
24 namespace OHOS {
25 namespace NetManagerStandard {
GetInstance()26 NetFirewallPolicyManager &NetFirewallPolicyManager::GetInstance()
27 {
28 static NetFirewallPolicyManager instance;
29 return instance;
30 }
31
NetFirewallPolicyManager()32 NetFirewallPolicyManager::NetFirewallPolicyManager()
33 {
34 preferencesHelper_ = NetFirewallPreferenceHelper::GetInstance();
35 NETMGR_EXT_LOG_I("NetFirewallPolicyManager()");
36 }
37
~NetFirewallPolicyManager()38 NetFirewallPolicyManager::~NetFirewallPolicyManager()
39 {
40 NETMGR_EXT_LOG_I("~NetFirewallPolicyManager()");
41 }
42
SetNetFirewallPolicy(const int32_t userId,const sptr<NetFirewallPolicy> & policy)43 int32_t NetFirewallPolicyManager::SetNetFirewallPolicy(const int32_t userId, const sptr<NetFirewallPolicy> &policy)
44 {
45 std::unique_lock<std::shared_mutex> locker(setPolicyMutex_);
46 if (policy == nullptr) {
47 NETMGR_EXT_LOG_E("SetNetFirewallPolicy failed, policy is nullptr.");
48 return FIREWALL_ERR_PARAMETER_ERROR;
49 }
50 if (preferencesHelper_ == nullptr) {
51 NETMGR_EXT_LOG_E("SetNetFirewallPolicy failed, reference is nullptr.");
52 return FIREWALL_ERR_INTERNAL;
53 }
54 bool ret = true;
55 ret &= preferencesHelper_->GetPreference(FIREWALL_PREFERENCE_PATH + std::to_string(userId) + ".xml");
56 ret &= preferencesHelper_->SaveBool(NET_FIREWALL_IS_OPEN, policy->isOpen);
57 ret &= preferencesHelper_->SaveInt(NET_FIREWALL_IN_ACTION, static_cast<int>(policy->inAction));
58 ret &= preferencesHelper_->SaveInt(NET_FIREWALL_OUT_ACTION, static_cast<int>(policy->outAction));
59 if (!ret) {
60 NETMGR_EXT_LOG_E("SetNetFirewallPolicy failed");
61 return FIREWALL_ERR_INTERNAL;
62 }
63
64 return FIREWALL_SUCCESS;
65 }
66
IsFirewallOpen()67 bool NetFirewallPolicyManager::IsFirewallOpen()
68 {
69 std::unique_lock<std::shared_mutex> locker(setPolicyMutex_);
70 std::vector<int32_t> accountIds;
71 GetAllUserId(accountIds);
72 for (auto &accountId : accountIds) {
73 if (IsNetFirewallOpen(accountId)) {
74 return true;
75 }
76 }
77 return false;
78 }
79
GetAllUserId(std::vector<int32_t> & accountIds)80 void NetFirewallPolicyManager::GetAllUserId(std::vector<int32_t> &accountIds)
81 {
82 std::vector<AccountSA::OsAccountInfo> osAccountInfos;
83 int32_t ret = AccountSA::OsAccountManager::QueryAllCreatedOsAccounts(osAccountInfos);
84 if (ret != ERR_OK || osAccountInfos.empty()) {
85 NETMGR_EXT_LOG_W("query user failed errCode=%{public}d", ret);
86 }
87 for (const auto &info : osAccountInfos) {
88 accountIds.push_back(info.GetLocalId());
89 }
90 }
91
InitNetfirewallPolicy()92 int32_t NetFirewallPolicyManager::InitNetfirewallPolicy()
93 {
94 std::unique_lock<std::shared_mutex> locker(setPolicyMutex_);
95 std::vector<int32_t> accountIds;
96 GetAllUserId(accountIds);
97 NETMGR_EXT_LOG_I("InitNetfirewallPolicy accountIds size =%{public}zu", accountIds.size());
98 sptr<NetFirewallPolicy> netfirewallPolicy = new (std::nothrow) NetFirewallPolicy();
99 if (netfirewallPolicy == nullptr) {
100 NETMGR_EXT_LOG_E("InitNetfirewallPolicy error");
101 return FIREWALL_ERR_INTERNAL;
102 }
103 NetFirewallRuleNativeHelper::GetInstance().ClearFirewallRules(NetFirewallRuleType::RULE_DEFAULT_ACTION);
104 for (auto &accountId : accountIds) {
105 NETMGR_EXT_LOG_I("InitNetfirewallPolicy accountId=%{public}d", accountId);
106 LoadPolicyFormPreference(accountId, netfirewallPolicy);
107 // set policy is open to bpf map
108 if (netfirewallPolicy->isOpen) {
109 NetFirewallRuleNativeHelper::GetInstance().SetFirewallDefaultAction(accountId,
110 netfirewallPolicy->inAction, netfirewallPolicy->outAction);
111 }
112 }
113 return FIREWALL_SUCCESS;
114 }
115
GetNetFirewallPolicy(const int32_t userId,sptr<NetFirewallPolicy> & policy)116 int32_t NetFirewallPolicyManager::GetNetFirewallPolicy(const int32_t userId, sptr<NetFirewallPolicy> &policy)
117 {
118 if (policy == nullptr) {
119 NETMGR_EXT_LOG_E("GetNetFirewallPolicy failed, policy is nullptr.");
120 return FIREWALL_ERR_INTERNAL;
121 }
122 LoadPolicyFormPreference(userId, policy);
123 return FIREWALL_SUCCESS;
124 }
125
GetNetFirewallStatus(const int32_t userId)126 bool NetFirewallPolicyManager::GetNetFirewallStatus(const int32_t userId)
127 {
128 std::unique_lock<std::shared_mutex> locker(setPolicyMutex_);
129 return IsNetFirewallOpen(userId);
130 }
131
IsNetFirewallOpen(const int32_t userId)132 bool NetFirewallPolicyManager::IsNetFirewallOpen(const int32_t userId)
133 {
134 NETMGR_EXT_LOG_D("IsNetFirewallOpen");
135 preferencesHelper_->GetPreference(FIREWALL_PREFERENCE_PATH + std::to_string(userId) + ".xml");
136 return preferencesHelper_->ObtainBool(NET_FIREWALL_IS_OPEN, false);
137 }
138
ClearFirewallPolicy(const int32_t userId)139 int32_t NetFirewallPolicyManager::ClearFirewallPolicy(const int32_t userId)
140 {
141 if (preferencesHelper_ == nullptr) {
142 NETMGR_EXT_LOG_E("ClearFirewallPolicy failed");
143 return FIREWALL_ERR_INTERNAL;
144 }
145 preferencesHelper_->Clear(FIREWALL_PREFERENCE_PATH + std::to_string(userId) + ".xml");
146 InitNetfirewallPolicy();
147 return FIREWALL_SUCCESS;
148 }
149
LoadPolicyFormPreference(const int32_t userId,sptr<NetFirewallPolicy> & policy)150 void NetFirewallPolicyManager::LoadPolicyFormPreference(const int32_t userId, sptr<NetFirewallPolicy> &policy)
151 {
152 preferencesHelper_->GetPreference(FIREWALL_PREFERENCE_PATH + std::to_string(userId) + ".xml");
153 policy->isOpen = preferencesHelper_->ObtainBool(NET_FIREWALL_IS_OPEN, false);
154 policy->inAction = static_cast<FirewallRuleAction>(
155 preferencesHelper_->ObtainInt(NET_FIREWALL_IN_ACTION, static_cast<int>(FirewallRuleAction::RULE_ALLOW)));
156 policy->outAction = static_cast<FirewallRuleAction>(
157 preferencesHelper_->ObtainInt(NET_FIREWALL_OUT_ACTION, static_cast<int>(FirewallRuleAction::RULE_ALLOW)));
158 }
159 } // namespace NetManagerStandard
160 } // namespace OHOS
161