b432cf293c
From Android 11, Wi-Fi framework only supports ASCII encoding for hotspot password, APP should check if password character is valid. This change checks if SoftApConfiguration accepts the password and disable the OK button if the password is invalid. Bug: 163353576 Test: make RunSettingsRoboTests ROBOTEST_FILTER=WifiUtilsTest Change-Id: Icf3b5c85856906e4cbe2f0ad79583c1b7182b8c7 Merged-In: Ief3c6c1f08f8fcdf128768cde3ab8eef91f19fbe
296 lines
12 KiB
Java
296 lines
12 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.ScanResult;
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import android.net.wifi.SoftApConfiguration;
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import android.net.wifi.WifiConfiguration;
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import android.os.UserHandle;
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import android.os.UserManager;
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import android.provider.Settings;
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import android.text.TextUtils;
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import com.android.settings.Utils;
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import com.android.settingslib.wifi.AccessPoint;
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import java.nio.charset.StandardCharsets;
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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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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.getBytes(StandardCharsets.UTF_8).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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/**
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* Check if the WPA2-PSK hotspot password is valid.
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*/
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public static boolean isHotspotWpa2PasswordValid(String password) {
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final SoftApConfiguration.Builder configBuilder = new SoftApConfiguration.Builder();
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try {
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configBuilder.setPassphrase(password, SoftApConfiguration.SECURITY_TYPE_WPA2_PSK);
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} catch (IllegalArgumentException e) {
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return false;
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}
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return true;
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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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*
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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 PackageManager pm = context.getPackageManager();
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final UserManager um = (UserManager) context.getSystemService(Context.USER_SERVICE);
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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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} else if (dpm.isOrganizationOwnedDeviceWithManagedProfile()) {
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int profileOwnerUserId = Utils.getManagedProfileId(um, UserHandle.myUserId());
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final ComponentName profileOwner = dpm.getProfileOwnerAsUser(profileOwnerUserId);
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if (profileOwner != null) {
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try {
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final int profileOwnerUid = pm.getPackageUidAsUser(
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profileOwner.getPackageName(), profileOwnerUserId);
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isConfigEligibleForLockdown = profileOwnerUid == 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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}
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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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* Provides a simple way to generate a new {@link WifiConfiguration} obj from
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* {@link ScanResult} or {@link AccessPoint}. Either {@code accessPoint} or {@code scanResult
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* } input should be not null for retrieving information, otherwise will throw
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* IllegalArgumentException.
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* This method prefers to take {@link AccessPoint} input in priority. Therefore this method
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* will take {@link AccessPoint} input as preferred data extraction source when you input
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* both {@link AccessPoint} and {@link ScanResult}, and ignore {@link ScanResult} input.
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*
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* Duplicated and simplified method from {@link WifiConfigController#getConfig()}.
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* TODO(b/120827021): Should be removed if the there is have a common one in shared place (e.g.
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* SettingsLib).
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*
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* @param accessPoint Input data for retrieving WifiConfiguration.
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* @param scanResult Input data for retrieving WifiConfiguration.
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* @return WifiConfiguration obj based on input.
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*/
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public static WifiConfiguration getWifiConfig(AccessPoint accessPoint, ScanResult scanResult,
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String password) {
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if (accessPoint == null && scanResult == null) {
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throw new IllegalArgumentException(
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"At least one of AccessPoint and ScanResult input is required.");
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}
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final WifiConfiguration config = new WifiConfiguration();
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final int security;
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if (accessPoint == null) {
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config.SSID = AccessPoint.convertToQuotedString(scanResult.SSID);
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security = getAccessPointSecurity(scanResult);
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} else {
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if (!accessPoint.isSaved()) {
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config.SSID = AccessPoint.convertToQuotedString(
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accessPoint.getSsidStr());
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} else {
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config.networkId = accessPoint.getConfig().networkId;
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config.hiddenSSID = accessPoint.getConfig().hiddenSSID;
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}
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security = accessPoint.getSecurity();
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}
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switch (security) {
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case AccessPoint.SECURITY_NONE:
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config.setSecurityParams(WifiConfiguration.SECURITY_TYPE_OPEN);
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break;
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case AccessPoint.SECURITY_WEP:
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config.setSecurityParams(WifiConfiguration.SECURITY_TYPE_WEP);
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if (!TextUtils.isEmpty(password)) {
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int length = password.length();
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// WEP-40, WEP-104, and 256-bit WEP (WEP-232?)
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if ((length == 10 || length == 26 || length == 58)
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&& password.matches("[0-9A-Fa-f]*")) {
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config.wepKeys[0] = password;
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} else {
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config.wepKeys[0] = '"' + password + '"';
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}
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}
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break;
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case AccessPoint.SECURITY_PSK:
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config.setSecurityParams(WifiConfiguration.SECURITY_TYPE_PSK);
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if (!TextUtils.isEmpty(password)) {
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if (password.matches("[0-9A-Fa-f]{64}")) {
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config.preSharedKey = password;
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} else {
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config.preSharedKey = '"' + password + '"';
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}
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}
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break;
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case AccessPoint.SECURITY_EAP:
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case AccessPoint.SECURITY_EAP_SUITE_B:
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if (security == AccessPoint.SECURITY_EAP_SUITE_B) {
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// allowedSuiteBCiphers will be set according to certificate type
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config.setSecurityParams(WifiConfiguration.SECURITY_TYPE_EAP_SUITE_B);
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} else {
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config.setSecurityParams(WifiConfiguration.SECURITY_TYPE_EAP);
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}
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if (!TextUtils.isEmpty(password)) {
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config.enterpriseConfig.setPassword(password);
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}
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break;
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case AccessPoint.SECURITY_SAE:
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config.setSecurityParams(WifiConfiguration.SECURITY_TYPE_SAE);
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if (!TextUtils.isEmpty(password)) {
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config.preSharedKey = '"' + password + '"';
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}
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break;
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case AccessPoint.SECURITY_OWE:
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config.setSecurityParams(WifiConfiguration.SECURITY_TYPE_OWE);
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break;
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default:
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break;
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}
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return config;
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}
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/**
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* Gets security value from ScanResult.
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*
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* Duplicated method from {@link AccessPoint#getSecurity(ScanResult)}.
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* TODO(b/120827021): Should be removed if the there is have a common one in shared place (e.g.
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* SettingsLib).
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*
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* @param result ScanResult
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* @return Related security value based on {@link AccessPoint}.
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*/
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public static int getAccessPointSecurity(ScanResult result) {
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if (result.capabilities.contains("WEP")) {
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return AccessPoint.SECURITY_WEP;
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} else if (result.capabilities.contains("SAE")) {
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return AccessPoint.SECURITY_SAE;
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} else if (result.capabilities.contains("PSK")) {
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return AccessPoint.SECURITY_PSK;
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} else if (result.capabilities.contains("EAP_SUITE_B_192")) {
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return AccessPoint.SECURITY_EAP_SUITE_B;
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} else if (result.capabilities.contains("EAP")) {
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return AccessPoint.SECURITY_EAP;
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} else if (result.capabilities.contains("OWE")) {
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return AccessPoint.SECURITY_OWE;
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}
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return AccessPoint.SECURITY_NONE;
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}
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public static final int CONNECT_TYPE_OTHERS = 0;
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public static final int CONNECT_TYPE_OPEN_NETWORK = 1;
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public static final int CONNECT_TYPE_SAVED_NETWORK = 2;
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public static final int CONNECT_TYPE_OSU_PROVISION = 3;
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/**
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* Gets the connecting type of {@link AccessPoint}.
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*/
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public static int getConnectingType(AccessPoint accessPoint) {
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final WifiConfiguration config = accessPoint.getConfig();
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if (accessPoint.isOsuProvider()) {
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return CONNECT_TYPE_OSU_PROVISION;
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} else if ((accessPoint.getSecurity() == AccessPoint.SECURITY_NONE) ||
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(accessPoint.getSecurity() == AccessPoint.SECURITY_OWE)) {
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return CONNECT_TYPE_OPEN_NETWORK;
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} else if (accessPoint.isSaved() && config != null
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&& config.getNetworkSelectionStatus() != null
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&& config.getNetworkSelectionStatus().hasEverConnected()) {
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return CONNECT_TYPE_SAVED_NETWORK;
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} else if (accessPoint.isPasspoint()) {
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// Access point provided by an installed Passpoint provider, connect using
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// the associated config.
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return CONNECT_TYPE_SAVED_NETWORK;
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} else {
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return CONNECT_TYPE_OTHERS;
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}
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}
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}
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