| /* |
| * Copyright (C) 2010 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.settings.wifi; |
| |
| import android.content.Context; |
| import android.net.NetworkInfo.DetailedState; |
| import android.net.wifi.ScanResult; |
| import android.net.wifi.WifiConfiguration; |
| import android.net.wifi.WifiConfiguration.KeyMgmt; |
| import android.net.wifi.WifiInfo; |
| import android.net.wifi.WifiManager; |
| import android.os.Bundle; |
| import android.preference.Preference; |
| import android.util.Log; |
| import android.view.View; |
| import android.widget.ImageView; |
| |
| import com.android.settings.R; |
| |
| class AccessPoint extends Preference { |
| static final String TAG = "Settings.AccessPoint"; |
| |
| private static final String KEY_DETAILEDSTATE = "key_detailedstate"; |
| private static final String KEY_WIFIINFO = "key_wifiinfo"; |
| private static final String KEY_SCANRESULT = "key_scanresult"; |
| private static final String KEY_CONFIG = "key_config"; |
| |
| private static final int[] STATE_SECURED = { |
| R.attr.state_encrypted |
| }; |
| private static final int[] STATE_NONE = {}; |
| |
| /** These values are matched in string arrays -- changes must be kept in sync */ |
| static final int SECURITY_NONE = 0; |
| static final int SECURITY_WEP = 1; |
| static final int SECURITY_PSK = 2; |
| static final int SECURITY_EAP = 3; |
| |
| enum PskType { |
| UNKNOWN, |
| WPA, |
| WPA2, |
| WPA_WPA2 |
| } |
| |
| String ssid; |
| String bssid; |
| int security; |
| int networkId; |
| boolean wpsAvailable = false; |
| |
| PskType pskType = PskType.UNKNOWN; |
| |
| private WifiConfiguration mConfig; |
| /* package */ScanResult mScanResult; |
| |
| private int mRssi; |
| private WifiInfo mInfo; |
| private DetailedState mState; |
| |
| static int getSecurity(WifiConfiguration config) { |
| if (config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) { |
| return SECURITY_PSK; |
| } |
| if (config.allowedKeyManagement.get(KeyMgmt.WPA_EAP) || |
| config.allowedKeyManagement.get(KeyMgmt.IEEE8021X)) { |
| return SECURITY_EAP; |
| } |
| return (config.wepKeys[0] != null) ? SECURITY_WEP : SECURITY_NONE; |
| } |
| |
| private static int getSecurity(ScanResult result) { |
| if (result.capabilities.contains("WEP")) { |
| return SECURITY_WEP; |
| } else if (result.capabilities.contains("PSK")) { |
| return SECURITY_PSK; |
| } else if (result.capabilities.contains("EAP")) { |
| return SECURITY_EAP; |
| } |
| return SECURITY_NONE; |
| } |
| |
| public String getSecurityString(boolean concise) { |
| Context context = getContext(); |
| switch(security) { |
| case SECURITY_EAP: |
| return concise ? context.getString(R.string.wifi_security_short_eap) : |
| context.getString(R.string.wifi_security_eap); |
| case SECURITY_PSK: |
| switch (pskType) { |
| case WPA: |
| return concise ? context.getString(R.string.wifi_security_short_wpa) : |
| context.getString(R.string.wifi_security_wpa); |
| case WPA2: |
| return concise ? context.getString(R.string.wifi_security_short_wpa2) : |
| context.getString(R.string.wifi_security_wpa2); |
| case WPA_WPA2: |
| return concise ? context.getString(R.string.wifi_security_short_wpa_wpa2) : |
| context.getString(R.string.wifi_security_wpa_wpa2); |
| case UNKNOWN: |
| default: |
| return concise ? context.getString(R.string.wifi_security_short_psk_generic) |
| : context.getString(R.string.wifi_security_psk_generic); |
| } |
| case SECURITY_WEP: |
| return concise ? context.getString(R.string.wifi_security_short_wep) : |
| context.getString(R.string.wifi_security_wep); |
| case SECURITY_NONE: |
| default: |
| return concise ? "" : context.getString(R.string.wifi_security_none); |
| } |
| } |
| |
| private static PskType getPskType(ScanResult result) { |
| boolean wpa = result.capabilities.contains("WPA-PSK"); |
| boolean wpa2 = result.capabilities.contains("WPA2-PSK"); |
| if (wpa2 && wpa) { |
| return PskType.WPA_WPA2; |
| } else if (wpa2) { |
| return PskType.WPA2; |
| } else if (wpa) { |
| return PskType.WPA; |
| } else { |
| Log.w(TAG, "Received abnormal flag string: " + result.capabilities); |
| return PskType.UNKNOWN; |
| } |
| } |
| |
| AccessPoint(Context context, WifiConfiguration config) { |
| super(context); |
| setWidgetLayoutResource(R.layout.preference_widget_wifi_signal); |
| loadConfig(config); |
| refresh(); |
| } |
| |
| AccessPoint(Context context, ScanResult result) { |
| super(context); |
| setWidgetLayoutResource(R.layout.preference_widget_wifi_signal); |
| loadResult(result); |
| refresh(); |
| } |
| |
| AccessPoint(Context context, Bundle savedState) { |
| super(context); |
| setWidgetLayoutResource(R.layout.preference_widget_wifi_signal); |
| |
| mConfig = savedState.getParcelable(KEY_CONFIG); |
| if (mConfig != null) { |
| loadConfig(mConfig); |
| } |
| mScanResult = (ScanResult) savedState.getParcelable(KEY_SCANRESULT); |
| if (mScanResult != null) { |
| loadResult(mScanResult); |
| } |
| mInfo = (WifiInfo) savedState.getParcelable(KEY_WIFIINFO); |
| if (savedState.containsKey(KEY_DETAILEDSTATE)) { |
| mState = DetailedState.valueOf(savedState.getString(KEY_DETAILEDSTATE)); |
| } |
| update(mInfo, mState); |
| } |
| |
| public void saveWifiState(Bundle savedState) { |
| savedState.putParcelable(KEY_CONFIG, mConfig); |
| savedState.putParcelable(KEY_SCANRESULT, mScanResult); |
| savedState.putParcelable(KEY_WIFIINFO, mInfo); |
| if (mState != null) { |
| savedState.putString(KEY_DETAILEDSTATE, mState.toString()); |
| } |
| } |
| |
| private void loadConfig(WifiConfiguration config) { |
| ssid = (config.SSID == null ? "" : removeDoubleQuotes(config.SSID)); |
| bssid = config.BSSID; |
| security = getSecurity(config); |
| networkId = config.networkId; |
| mRssi = Integer.MAX_VALUE; |
| mConfig = config; |
| } |
| |
| private void loadResult(ScanResult result) { |
| ssid = result.SSID; |
| bssid = result.BSSID; |
| security = getSecurity(result); |
| wpsAvailable = security != SECURITY_EAP && result.capabilities.contains("WPS"); |
| if (security == SECURITY_PSK) |
| pskType = getPskType(result); |
| networkId = -1; |
| mRssi = result.level; |
| mScanResult = result; |
| } |
| |
| @Override |
| protected void onBindView(View view) { |
| super.onBindView(view); |
| ImageView signal = (ImageView) view.findViewById(R.id.signal); |
| if (mRssi == Integer.MAX_VALUE) { |
| signal.setImageDrawable(null); |
| } else { |
| signal.setImageLevel(getLevel()); |
| signal.setImageResource(R.drawable.wifi_signal); |
| signal.setImageState((security != SECURITY_NONE) ? |
| STATE_SECURED : STATE_NONE, true); |
| } |
| } |
| |
| @Override |
| public int compareTo(Preference preference) { |
| if (!(preference instanceof AccessPoint)) { |
| return 1; |
| } |
| AccessPoint other = (AccessPoint) preference; |
| // Active one goes first. |
| if (mInfo != null && other.mInfo == null) return -1; |
| if (mInfo == null && other.mInfo != null) return 1; |
| |
| // Reachable one goes before unreachable one. |
| if (mRssi != Integer.MAX_VALUE && other.mRssi == Integer.MAX_VALUE) return -1; |
| if (mRssi == Integer.MAX_VALUE && other.mRssi != Integer.MAX_VALUE) return 1; |
| |
| // Configured one goes before unconfigured one. |
| if (networkId != WifiConfiguration.INVALID_NETWORK_ID |
| && other.networkId == WifiConfiguration.INVALID_NETWORK_ID) return -1; |
| if (networkId == WifiConfiguration.INVALID_NETWORK_ID |
| && other.networkId != WifiConfiguration.INVALID_NETWORK_ID) return 1; |
| |
| // Sort by signal strength. |
| int difference = WifiManager.compareSignalLevel(other.mRssi, mRssi); |
| if (difference != 0) { |
| return difference; |
| } |
| // Sort by ssid. |
| return ssid.compareToIgnoreCase(other.ssid); |
| } |
| |
| @Override |
| public boolean equals(Object other) { |
| if (!(other instanceof AccessPoint)) return false; |
| return (this.compareTo((AccessPoint) other) == 0); |
| } |
| |
| @Override |
| public int hashCode() { |
| int result = 0; |
| if (mInfo != null) result += 13 * mInfo.hashCode(); |
| result += 19 * mRssi; |
| result += 23 * networkId; |
| result += 29 * ssid.hashCode(); |
| return result; |
| } |
| |
| boolean update(ScanResult result) { |
| if (ssid.equals(result.SSID) && security == getSecurity(result)) { |
| if (WifiManager.compareSignalLevel(result.level, mRssi) > 0) { |
| int oldLevel = getLevel(); |
| mRssi = result.level; |
| if (getLevel() != oldLevel) { |
| notifyChanged(); |
| } |
| } |
| // This flag only comes from scans, is not easily saved in config |
| if (security == SECURITY_PSK) { |
| pskType = getPskType(result); |
| } |
| refresh(); |
| return true; |
| } |
| return false; |
| } |
| |
| void update(WifiInfo info, DetailedState state) { |
| boolean reorder = false; |
| if (info != null && networkId != WifiConfiguration.INVALID_NETWORK_ID |
| && networkId == info.getNetworkId()) { |
| reorder = (mInfo == null); |
| mRssi = info.getRssi(); |
| mInfo = info; |
| mState = state; |
| refresh(); |
| } else if (mInfo != null) { |
| reorder = true; |
| mInfo = null; |
| mState = null; |
| refresh(); |
| } |
| if (reorder) { |
| notifyHierarchyChanged(); |
| } |
| } |
| |
| int getLevel() { |
| if (mRssi == Integer.MAX_VALUE) { |
| return -1; |
| } |
| return WifiManager.calculateSignalLevel(mRssi, 4); |
| } |
| |
| WifiConfiguration getConfig() { |
| return mConfig; |
| } |
| |
| WifiInfo getInfo() { |
| return mInfo; |
| } |
| |
| DetailedState getState() { |
| return mState; |
| } |
| |
| static String removeDoubleQuotes(String string) { |
| int length = string.length(); |
| if ((length > 1) && (string.charAt(0) == '"') |
| && (string.charAt(length - 1) == '"')) { |
| return string.substring(1, length - 1); |
| } |
| return string; |
| } |
| |
| static String convertToQuotedString(String string) { |
| return "\"" + string + "\""; |
| } |
| |
| /** Updates the title and summary; may indirectly call notifyChanged() */ |
| private void refresh() { |
| setTitle(ssid); |
| |
| Context context = getContext(); |
| if (mState != null) { // This is the active connection |
| setSummary(Summary.get(context, mState)); |
| } else if (mRssi == Integer.MAX_VALUE) { // Wifi out of range |
| setSummary(context.getString(R.string.wifi_not_in_range)); |
| } else if (mConfig != null && mConfig.status == WifiConfiguration.Status.DISABLED) { |
| switch (mConfig.disableReason) { |
| case WifiConfiguration.DISABLED_AUTH_FAILURE: |
| setSummary(context.getString(R.string.wifi_disabled_password_failure)); |
| break; |
| case WifiConfiguration.DISABLED_DHCP_FAILURE: |
| case WifiConfiguration.DISABLED_DNS_FAILURE: |
| setSummary(context.getString(R.string.wifi_disabled_network_failure)); |
| break; |
| case WifiConfiguration.DISABLED_UNKNOWN_REASON: |
| setSummary(context.getString(R.string.wifi_disabled_generic)); |
| } |
| } else { // In range, not disabled. |
| StringBuilder summary = new StringBuilder(); |
| if (mConfig != null) { // Is saved network |
| summary.append(context.getString(R.string.wifi_remembered)); |
| } |
| |
| if (security != SECURITY_NONE) { |
| String securityStrFormat; |
| if (summary.length() == 0) { |
| securityStrFormat = context.getString(R.string.wifi_secured_first_item); |
| } else { |
| securityStrFormat = context.getString(R.string.wifi_secured_second_item); |
| } |
| summary.append(String.format(securityStrFormat, getSecurityString(true))); |
| } |
| |
| if (mConfig == null && wpsAvailable) { // Only list WPS available for unsaved networks |
| if (summary.length() == 0) { |
| summary.append(context.getString(R.string.wifi_wps_available_first_item)); |
| } else { |
| summary.append(context.getString(R.string.wifi_wps_available_second_item)); |
| } |
| } |
| setSummary(summary.toString()); |
| } |
| } |
| |
| /** |
| * Generate and save a default wifiConfiguration with common values. |
| * Can only be called for unsecured networks. |
| * @hide |
| */ |
| protected void generateOpenNetworkConfig() { |
| if (security != SECURITY_NONE) |
| throw new IllegalStateException(); |
| if (mConfig != null) |
| return; |
| mConfig = new WifiConfiguration(); |
| mConfig.SSID = AccessPoint.convertToQuotedString(ssid); |
| mConfig.allowedKeyManagement.set(KeyMgmt.NONE); |
| } |
| } |
