| /* |
| * Copyright (C) 2016 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. |
| */ |
| |
| package com.android.server.net; |
| |
| import static android.net.NetworkPolicyManager.POLICY_NONE; |
| import static android.net.NetworkPolicyManager.POLICY_REJECT_METERED_BACKGROUND; |
| import static android.net.wifi.WifiInfo.removeDoubleQuotes; |
| import static com.android.server.net.NetworkPolicyManagerService.newWifiPolicy; |
| import static com.android.server.net.NetworkPolicyManagerService.TAG; |
| |
| import java.io.PrintWriter; |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| |
| import android.content.Context; |
| import android.net.INetworkPolicyManager; |
| import android.net.NetworkPolicy; |
| import android.net.NetworkTemplate; |
| import android.net.wifi.WifiConfiguration; |
| import android.net.wifi.WifiManager; |
| import android.os.RemoteException; |
| import android.os.ShellCommand; |
| import android.util.Log; |
| |
| class NetworkPolicyManagerShellCommand extends ShellCommand { |
| |
| private final INetworkPolicyManager mInterface; |
| private final WifiManager mWifiManager; |
| |
| NetworkPolicyManagerShellCommand(Context context, INetworkPolicyManager service) { |
| mInterface = service; |
| mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE); |
| } |
| |
| @Override |
| public int onCommand(String cmd) { |
| if (cmd == null) { |
| return handleDefaultCommands(cmd); |
| } |
| final PrintWriter pw = getOutPrintWriter(); |
| try { |
| switch(cmd) { |
| case "get": |
| return runGet(); |
| case "set": |
| return runSet(); |
| case "list": |
| return runList(); |
| case "add": |
| return runAdd(); |
| case "remove": |
| return runRemove(); |
| default: |
| return handleDefaultCommands(cmd); |
| } |
| } catch (RemoteException e) { |
| pw.println("Remote exception: " + e); |
| } |
| return -1; |
| } |
| |
| @Override |
| public void onHelp() { |
| final PrintWriter pw = getOutPrintWriter(); |
| pw.println("Network policy manager (netpolicy) commands:"); |
| pw.println(" help"); |
| pw.println(" Print this help text."); |
| pw.println(""); |
| pw.println(" add restrict-background-whitelist UID"); |
| pw.println(" Adds a UID to the whitelist for restrict background usage."); |
| pw.println(" add restrict-background-blacklist UID"); |
| pw.println(" Adds a UID to the blacklist for restrict background usage."); |
| pw.println(" get restrict-background"); |
| pw.println(" Gets the global restrict background usage status."); |
| pw.println(" list wifi-networks [BOOLEAN]"); |
| pw.println(" Lists all saved wifi networks and whether they are metered or not."); |
| pw.println(" If a boolean argument is passed, filters just the metered (or unmetered)"); |
| pw.println(" networks."); |
| pw.println(" list restrict-background-whitelist"); |
| pw.println(" Lists UIDs that are whitelisted for restrict background usage."); |
| pw.println(" list restrict-background-blacklist"); |
| pw.println(" Lists UIDs that are blacklisted for restrict background usage."); |
| pw.println(" remove restrict-background-whitelist UID"); |
| pw.println(" Removes a UID from the whitelist for restrict background usage."); |
| pw.println(" remove restrict-background-blacklist UID"); |
| pw.println(" Removes a UID from the blacklist for restrict background usage."); |
| pw.println(" set metered-network ID BOOLEAN"); |
| pw.println(" Toggles whether the given wi-fi network is metered."); |
| pw.println(" set restrict-background BOOLEAN"); |
| pw.println(" Sets the global restrict background usage status."); |
| } |
| |
| private int runGet() throws RemoteException { |
| final PrintWriter pw = getOutPrintWriter(); |
| final String type = getNextArg(); |
| if (type == null) { |
| pw.println("Error: didn't specify type of data to get"); |
| return -1; |
| } |
| switch(type) { |
| case "restrict-background": |
| return getRestrictBackground(); |
| } |
| pw.println("Error: unknown get type '" + type + "'"); |
| return -1; |
| } |
| |
| private int runSet() throws RemoteException { |
| final PrintWriter pw = getOutPrintWriter(); |
| final String type = getNextArg(); |
| if (type == null) { |
| pw.println("Error: didn't specify type of data to set"); |
| return -1; |
| } |
| switch(type) { |
| case "metered-network": |
| return setMeteredWifiNetwork(); |
| case "restrict-background": |
| return setRestrictBackground(); |
| } |
| pw.println("Error: unknown set type '" + type + "'"); |
| return -1; |
| } |
| |
| private int runList() throws RemoteException { |
| final PrintWriter pw = getOutPrintWriter(); |
| final String type = getNextArg(); |
| if (type == null) { |
| pw.println("Error: didn't specify type of data to list"); |
| return -1; |
| } |
| switch(type) { |
| case "wifi-networks": |
| return listWifiNetworks(); |
| case "restrict-background-whitelist": |
| return listRestrictBackgroundWhitelist(); |
| case "restrict-background-blacklist": |
| return listRestrictBackgroundBlacklist(); |
| } |
| pw.println("Error: unknown list type '" + type + "'"); |
| return -1; |
| } |
| |
| private int runAdd() throws RemoteException { |
| final PrintWriter pw = getOutPrintWriter(); |
| final String type = getNextArg(); |
| if (type == null) { |
| pw.println("Error: didn't specify type of data to add"); |
| return -1; |
| } |
| switch(type) { |
| case "restrict-background-whitelist": |
| return addRestrictBackgroundWhitelist(); |
| case "restrict-background-blacklist": |
| return addRestrictBackgroundBlacklist(); |
| } |
| pw.println("Error: unknown add type '" + type + "'"); |
| return -1; |
| } |
| |
| private int runRemove() throws RemoteException { |
| final PrintWriter pw = getOutPrintWriter(); |
| final String type = getNextArg(); |
| if (type == null) { |
| pw.println("Error: didn't specify type of data to remove"); |
| return -1; |
| } |
| switch(type) { |
| case "restrict-background-whitelist": |
| return removeRestrictBackgroundWhitelist(); |
| case "restrict-background-blacklist": |
| return removeRestrictBackgroundBlacklist(); |
| } |
| pw.println("Error: unknown remove type '" + type + "'"); |
| return -1; |
| } |
| |
| private int listRestrictBackgroundWhitelist() throws RemoteException { |
| final PrintWriter pw = getOutPrintWriter(); |
| final int[] uids = mInterface.getRestrictBackgroundWhitelistedUids(); |
| pw.print("Restrict background whitelisted UIDs: "); |
| if (uids.length == 0) { |
| pw.println("none"); |
| } else { |
| for (int i = 0; i < uids.length; i++) { |
| int uid = uids[i]; |
| pw.print(uid); |
| pw.print(' '); |
| } |
| } |
| pw.println(); |
| return 0; |
| } |
| |
| private int listRestrictBackgroundBlacklist() throws RemoteException { |
| final PrintWriter pw = getOutPrintWriter(); |
| |
| final int[] uids = mInterface.getUidsWithPolicy(POLICY_REJECT_METERED_BACKGROUND); |
| pw.print("Restrict background blacklisted UIDs: "); |
| if (uids.length == 0) { |
| pw.println("none"); |
| } else { |
| for (int i = 0; i < uids.length; i++) { |
| int uid = uids[i]; |
| pw.print(uid); |
| pw.print(' '); |
| } |
| } |
| pw.println(); |
| return 0; |
| } |
| |
| private int getRestrictBackground() throws RemoteException { |
| final PrintWriter pw = getOutPrintWriter(); |
| pw.print("Restrict background status: "); |
| pw.println(mInterface.getRestrictBackground() ? "enabled" : "disabled"); |
| return 0; |
| } |
| |
| private int setRestrictBackground() throws RemoteException { |
| final int enabled = getNextBooleanArg(); |
| if (enabled < 0) { |
| return enabled; |
| } |
| mInterface.setRestrictBackground(enabled > 0); |
| return 0; |
| } |
| |
| private int addRestrictBackgroundWhitelist() throws RemoteException { |
| final int uid = getUidFromNextArg(); |
| if (uid < 0) { |
| return uid; |
| } |
| mInterface.addRestrictBackgroundWhitelistedUid(uid); |
| return 0; |
| } |
| |
| private int removeRestrictBackgroundWhitelist() throws RemoteException { |
| final int uid = getUidFromNextArg(); |
| if (uid < 0) { |
| return uid; |
| } |
| mInterface.removeRestrictBackgroundWhitelistedUid(uid); |
| return 0; |
| } |
| |
| private int addRestrictBackgroundBlacklist() throws RemoteException { |
| final int uid = getUidFromNextArg(); |
| if (uid < 0) { |
| return uid; |
| } |
| mInterface.setUidPolicy(uid, POLICY_REJECT_METERED_BACKGROUND); |
| return 0; |
| } |
| |
| private int removeRestrictBackgroundBlacklist() throws RemoteException { |
| final int uid = getUidFromNextArg(); |
| if (uid < 0) { |
| return uid; |
| } |
| mInterface.setUidPolicy(uid, POLICY_NONE); |
| return 0; |
| } |
| |
| private int listWifiNetworks() throws RemoteException { |
| final PrintWriter pw = getOutPrintWriter(); |
| final String arg = getNextArg(); |
| final Boolean filter = arg == null ? null : Boolean.valueOf(arg); |
| for (NetworkPolicy policy : getWifiPolicies()) { |
| if (filter != null && filter.booleanValue() != policy.metered) { |
| continue; |
| } |
| pw.print(getNetworkId(policy)); |
| pw.print(';'); |
| pw.println(policy.metered); |
| } |
| return 0; |
| } |
| |
| private int setMeteredWifiNetwork() throws RemoteException { |
| final PrintWriter pw = getOutPrintWriter(); |
| final String id = getNextArg(); |
| if (id == null) { |
| pw.println("Error: didn't specify ID"); |
| return -1; |
| } |
| final String arg = getNextArg(); |
| if (arg == null) { |
| pw.println("Error: didn't specify BOOLEAN"); |
| return -1; |
| } |
| final boolean metered = Boolean.valueOf(arg); |
| final NetworkPolicy[] policies = mInterface.getNetworkPolicies(null); |
| boolean changed = false; |
| // First try to find a policy with such id |
| for (NetworkPolicy policy : policies) { |
| if (policy.template.isMatchRuleMobile() || policy.metered == metered) { |
| continue; |
| } |
| final String networkId = getNetworkId(policy); |
| if (id.equals(networkId)) { |
| Log.i(TAG, "Changing " + networkId + " metered status to " + metered); |
| policy.metered = metered; |
| changed = true; |
| } |
| } |
| if (changed) { |
| mInterface.setNetworkPolicies(policies); |
| return 0; |
| } |
| // Policy not found: check if there is a saved wi-fi with such id. |
| for (WifiConfiguration config : mWifiManager.getConfiguredNetworks()) { |
| final String ssid = removeDoubleQuotes(config.SSID); |
| if (id.equals(ssid)) { |
| final NetworkPolicy policy = newPolicy(ssid); |
| policy.metered = true; |
| Log.i(TAG, "Creating new policy for " + ssid + ": " + policy); |
| final NetworkPolicy[] newPolicies = new NetworkPolicy[policies.length + 1]; |
| System.arraycopy(policies, 0, newPolicies, 0, policies.length); |
| newPolicies[newPolicies.length - 1] = policy; |
| mInterface.setNetworkPolicies(newPolicies); |
| } |
| } |
| return 0; |
| } |
| |
| private List<NetworkPolicy> getWifiPolicies() throws RemoteException { |
| // First gets a list of saved wi-fi networks. |
| final List<WifiConfiguration> configs = mWifiManager.getConfiguredNetworks(); |
| final int size = configs != null ? configs.size() : 0; |
| final Set<String> ssids = new HashSet<>(size); |
| if (configs != null) { |
| for (WifiConfiguration config : configs) { |
| ssids.add(removeDoubleQuotes(config.SSID)); |
| } |
| } |
| |
| // Then gets the saved policies. |
| final NetworkPolicy[] policies = mInterface.getNetworkPolicies(null); |
| final List<NetworkPolicy> wifiPolicies = new ArrayList<NetworkPolicy>(policies.length); |
| for (NetworkPolicy policy: policies) { |
| if (!policy.template.isMatchRuleMobile()) { |
| wifiPolicies.add(policy); |
| final String netId = getNetworkId(policy); |
| ssids.remove(netId); |
| } |
| } |
| // Finally, creates new default policies for saved WI-FIs not policied yet. |
| for (String ssid : ssids) { |
| final NetworkPolicy policy = newPolicy(ssid); |
| wifiPolicies.add(policy); |
| } |
| return wifiPolicies; |
| } |
| |
| private NetworkPolicy newPolicy(String ssid) { |
| final NetworkTemplate template = NetworkTemplate.buildTemplateWifi(ssid); |
| final NetworkPolicy policy = newWifiPolicy(template, false); |
| return policy; |
| } |
| |
| private String getNetworkId(NetworkPolicy policy) { |
| return removeDoubleQuotes(policy.template.getNetworkId()); |
| } |
| |
| private int getNextBooleanArg() { |
| final PrintWriter pw = getOutPrintWriter(); |
| final String arg = getNextArg(); |
| if (arg == null) { |
| pw.println("Error: didn't specify BOOLEAN"); |
| return -1; |
| } |
| return Boolean.valueOf(arg) ? 1 : 0; |
| } |
| |
| private int getUidFromNextArg() { |
| final PrintWriter pw = getOutPrintWriter(); |
| final String arg = getNextArg(); |
| if (arg == null) { |
| pw.println("Error: didn't specify UID"); |
| return -1; |
| } |
| try { |
| return Integer.parseInt(arg); |
| } catch (NumberFormatException e) { |
| pw.println("Error: UID (" + arg + ") should be a number"); |
| return -2; |
| } |
| } |
| } |