670a3e582f
Previously people could have open tether networks but a restrction was placed on this sometime in the past. However there is no migration plan in place for people with open tether networks which will cause problems when the new requirements are enforced. This CL makes it so tether networks can be open once more. Test: robotests Bug: 65784990 Change-Id: I6e350dd53b9b9f987dd5a4cc317ba18d7f50df79
113 lines
4.2 KiB
Java
113 lines
4.2 KiB
Java
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings.wifi;
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import android.app.admin.DevicePolicyManager;
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import android.content.ComponentName;
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import android.content.ContentResolver;
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import android.content.Context;
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import android.content.pm.PackageManager;
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import android.net.NetworkCapabilities;
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import android.net.wifi.WifiConfiguration;
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import android.provider.Settings;
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import android.text.TextUtils;
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import com.android.settingslib.wrapper.PackageManagerWrapper;
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public class WifiUtils {
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private static final int SSID_ASCII_MIN_LENGTH = 1;
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private static final int SSID_ASCII_MAX_LENGTH = 32;
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private static final int PASSWORD_MIN_LENGTH = 8;
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private static final int PASSWORD_MAX_LENGTH = 63;
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public static boolean isSSIDTooLong(String ssid) {
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if (TextUtils.isEmpty(ssid)) {
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return false;
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}
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return ssid.length() > SSID_ASCII_MAX_LENGTH;
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}
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public static boolean isSSIDTooShort(String ssid) {
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if (TextUtils.isEmpty(ssid)) {
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return true;
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}
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return ssid.length() < SSID_ASCII_MIN_LENGTH;
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}
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public static boolean isHotspotPasswordValid(String password) {
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if (TextUtils.isEmpty(password)) {
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return true;
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}
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final int length = password.length();
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return length >= PASSWORD_MIN_LENGTH && length <= PASSWORD_MAX_LENGTH;
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}
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/**
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* This method is a stripped and negated version of WifiConfigStore.canModifyNetwork.
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* @param context Context of caller
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* @param config The WiFi config.
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* @return true if Settings cannot modify the config due to lockDown.
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*/
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public static boolean isNetworkLockedDown(Context context, WifiConfiguration config) {
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if (config == null) {
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return false;
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}
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final DevicePolicyManager dpm =
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(DevicePolicyManager) context.getSystemService(Context.DEVICE_POLICY_SERVICE);
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final PackageManagerWrapper pm = new PackageManagerWrapper(context.getPackageManager());
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// Check if device has DPM capability. If it has and dpm is still null, then we
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// treat this case with suspicion and bail out.
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if (pm.hasSystemFeature(PackageManager.FEATURE_DEVICE_ADMIN) && dpm == null) {
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return true;
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}
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boolean isConfigEligibleForLockdown = false;
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if (dpm != null) {
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final ComponentName deviceOwner = dpm.getDeviceOwnerComponentOnAnyUser();
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if (deviceOwner != null) {
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final int deviceOwnerUserId = dpm.getDeviceOwnerUserId();
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try {
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final int deviceOwnerUid = pm.getPackageUidAsUser(deviceOwner.getPackageName(),
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deviceOwnerUserId);
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isConfigEligibleForLockdown = deviceOwnerUid == config.creatorUid;
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} catch (PackageManager.NameNotFoundException e) {
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// don't care
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}
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}
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}
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if (!isConfigEligibleForLockdown) {
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return false;
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}
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final ContentResolver resolver = context.getContentResolver();
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final boolean isLockdownFeatureEnabled = Settings.Global.getInt(resolver,
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Settings.Global.WIFI_DEVICE_OWNER_CONFIGS_LOCKDOWN, 0) != 0;
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return isLockdownFeatureEnabled;
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}
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/** Returns true if the provided NetworkCapabilities indicate a captive portal network. */
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public static boolean canSignIntoNetwork(NetworkCapabilities capabilities) {
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return (capabilities != null
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&& capabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_CAPTIVE_PORTAL));
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}
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}
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