1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.settingslib.wifi;
18
19import android.app.AppGlobals;
20import android.content.Context;
21import android.content.pm.ApplicationInfo;
22import android.content.pm.IPackageManager;
23import android.content.pm.PackageManager;
24import android.net.ConnectivityManager;
25import android.net.Network;
26import android.net.NetworkCapabilities;
27import android.net.NetworkInfo;
28import android.net.NetworkInfo.DetailedState;
29import android.net.NetworkInfo.State;
30import android.net.wifi.IWifiManager;
31import android.net.wifi.ScanResult;
32import android.net.wifi.WifiConfiguration;
33import android.net.wifi.WifiConfiguration.KeyMgmt;
34import android.net.wifi.WifiInfo;
35import android.net.wifi.WifiManager;
36import android.os.Bundle;
37import android.os.RemoteException;
38import android.os.ServiceManager;
39import android.os.UserHandle;
40import android.support.annotation.NonNull;
41import android.text.Spannable;
42import android.text.SpannableString;
43import android.text.TextUtils;
44import android.text.style.TtsSpan;
45import android.util.Log;
46import android.util.LruCache;
47
48import com.android.settingslib.R;
49
50import java.util.ArrayList;
51import java.util.Map;
52
53
54public class AccessPoint implements Comparable<AccessPoint> {
55    static final String TAG = "SettingsLib.AccessPoint";
56
57    /**
58     * Lower bound on the 2.4 GHz (802.11b/g/n) WLAN channels
59     */
60    public static final int LOWER_FREQ_24GHZ = 2400;
61
62    /**
63     * Upper bound on the 2.4 GHz (802.11b/g/n) WLAN channels
64     */
65    public static final int HIGHER_FREQ_24GHZ = 2500;
66
67    /**
68     * Lower bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels
69     */
70    public static final int LOWER_FREQ_5GHZ = 4900;
71
72    /**
73     * Upper bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels
74     */
75    public static final int HIGHER_FREQ_5GHZ = 5900;
76
77
78    /**
79     * Experimental: we should be able to show the user the list of BSSIDs and bands
80     *  for that SSID.
81     *  For now this data is used only with Verbose Logging so as to show the band and number
82     *  of BSSIDs on which that network is seen.
83     */
84    public LruCache<String, ScanResult> mScanResultCache = new LruCache<String, ScanResult>(32);
85
86    private static final String KEY_NETWORKINFO = "key_networkinfo";
87    private static final String KEY_WIFIINFO = "key_wifiinfo";
88    private static final String KEY_SCANRESULT = "key_scanresult";
89    private static final String KEY_SSID = "key_ssid";
90    private static final String KEY_SECURITY = "key_security";
91    private static final String KEY_PSKTYPE = "key_psktype";
92    private static final String KEY_SCANRESULTCACHE = "key_scanresultcache";
93    private static final String KEY_CONFIG = "key_config";
94
95    /**
96     * These values are matched in string arrays -- changes must be kept in sync
97     */
98    public static final int SECURITY_NONE = 0;
99    public static final int SECURITY_WEP = 1;
100    public static final int SECURITY_PSK = 2;
101    public static final int SECURITY_EAP = 3;
102
103    private static final int PSK_UNKNOWN = 0;
104    private static final int PSK_WPA = 1;
105    private static final int PSK_WPA2 = 2;
106    private static final int PSK_WPA_WPA2 = 3;
107
108    public static final int SIGNAL_LEVELS = 4;
109
110    private final Context mContext;
111
112    private String ssid;
113    private String bssid;
114    private int security;
115    private int networkId = WifiConfiguration.INVALID_NETWORK_ID;
116
117    private int pskType = PSK_UNKNOWN;
118
119    private WifiConfiguration mConfig;
120
121    private int mRssi = Integer.MAX_VALUE;
122    private long mSeen = 0;
123
124    private WifiInfo mInfo;
125    private NetworkInfo mNetworkInfo;
126    private AccessPointListener mAccessPointListener;
127
128    private Object mTag;
129
130    public AccessPoint(Context context, Bundle savedState) {
131        mContext = context;
132        mConfig = savedState.getParcelable(KEY_CONFIG);
133        if (mConfig != null) {
134            loadConfig(mConfig);
135        }
136        if (savedState.containsKey(KEY_SSID)) {
137            ssid = savedState.getString(KEY_SSID);
138        }
139        if (savedState.containsKey(KEY_SECURITY)) {
140            security = savedState.getInt(KEY_SECURITY);
141        }
142        if (savedState.containsKey(KEY_PSKTYPE)) {
143            pskType = savedState.getInt(KEY_PSKTYPE);
144        }
145        mInfo = (WifiInfo) savedState.getParcelable(KEY_WIFIINFO);
146        if (savedState.containsKey(KEY_NETWORKINFO)) {
147            mNetworkInfo = savedState.getParcelable(KEY_NETWORKINFO);
148        }
149        if (savedState.containsKey(KEY_SCANRESULTCACHE)) {
150            ArrayList<ScanResult> scanResultArrayList =
151                    savedState.getParcelableArrayList(KEY_SCANRESULTCACHE);
152            mScanResultCache.evictAll();
153            for (ScanResult result : scanResultArrayList) {
154                mScanResultCache.put(result.BSSID, result);
155            }
156        }
157        update(mConfig, mInfo, mNetworkInfo);
158        mRssi = getRssi();
159        mSeen = getSeen();
160    }
161
162    AccessPoint(Context context, ScanResult result) {
163        mContext = context;
164        initWithScanResult(result);
165    }
166
167    AccessPoint(Context context, WifiConfiguration config) {
168        mContext = context;
169        loadConfig(config);
170    }
171
172    @Override
173    public int compareTo(@NonNull AccessPoint other) {
174        // Active one goes first.
175        if (isActive() && !other.isActive()) return -1;
176        if (!isActive() && other.isActive()) return 1;
177
178        // Reachable one goes before unreachable one.
179        if (mRssi != Integer.MAX_VALUE && other.mRssi == Integer.MAX_VALUE) return -1;
180        if (mRssi == Integer.MAX_VALUE && other.mRssi != Integer.MAX_VALUE) return 1;
181
182        // Configured one goes before unconfigured one.
183        if (networkId != WifiConfiguration.INVALID_NETWORK_ID
184                && other.networkId == WifiConfiguration.INVALID_NETWORK_ID) return -1;
185        if (networkId == WifiConfiguration.INVALID_NETWORK_ID
186                && other.networkId != WifiConfiguration.INVALID_NETWORK_ID) return 1;
187
188        // Sort by signal strength, bucketed by level
189        int difference = WifiManager.calculateSignalLevel(other.mRssi, SIGNAL_LEVELS)
190                - WifiManager.calculateSignalLevel(mRssi, SIGNAL_LEVELS);
191        if (difference != 0) {
192            return difference;
193        }
194        // Sort by ssid.
195        return ssid.compareToIgnoreCase(other.ssid);
196    }
197
198    @Override
199    public boolean equals(Object other) {
200        if (!(other instanceof AccessPoint)) return false;
201        return (this.compareTo((AccessPoint) other) == 0);
202    }
203
204    @Override
205    public int hashCode() {
206        int result = 0;
207        if (mInfo != null) result += 13 * mInfo.hashCode();
208        result += 19 * mRssi;
209        result += 23 * networkId;
210        result += 29 * ssid.hashCode();
211        return result;
212    }
213
214    @Override
215    public String toString() {
216        StringBuilder builder = new StringBuilder().append("AccessPoint(")
217                .append(ssid);
218        if (isSaved()) {
219            builder.append(',').append("saved");
220        }
221        if (isActive()) {
222            builder.append(',').append("active");
223        }
224        if (isEphemeral()) {
225            builder.append(',').append("ephemeral");
226        }
227        if (isConnectable()) {
228            builder.append(',').append("connectable");
229        }
230        if (security != SECURITY_NONE) {
231            builder.append(',').append(securityToString(security, pskType));
232        }
233        return builder.append(')').toString();
234    }
235
236    public boolean matches(ScanResult result) {
237        return ssid.equals(result.SSID) && security == getSecurity(result);
238    }
239
240    public boolean matches(WifiConfiguration config) {
241        if (config.isPasspoint() && mConfig != null && mConfig.isPasspoint()) {
242            return config.FQDN.equals(mConfig.providerFriendlyName);
243        } else {
244            return ssid.equals(removeDoubleQuotes(config.SSID))
245                    && security == getSecurity(config)
246                    && (mConfig == null || mConfig.shared == config.shared);
247        }
248    }
249
250    public WifiConfiguration getConfig() {
251        return mConfig;
252    }
253
254    public void clearConfig() {
255        mConfig = null;
256        networkId = WifiConfiguration.INVALID_NETWORK_ID;
257    }
258
259    public WifiInfo getInfo() {
260        return mInfo;
261    }
262
263    public int getLevel() {
264        if (mRssi == Integer.MAX_VALUE) {
265            return -1;
266        }
267        return WifiManager.calculateSignalLevel(mRssi, SIGNAL_LEVELS);
268    }
269
270    public int getRssi() {
271        int rssi = Integer.MIN_VALUE;
272        for (ScanResult result : mScanResultCache.snapshot().values()) {
273            if (result.level > rssi) {
274                rssi = result.level;
275            }
276        }
277
278        return rssi;
279    }
280
281    public long getSeen() {
282        long seen = 0;
283        for (ScanResult result : mScanResultCache.snapshot().values()) {
284            if (result.timestamp > seen) {
285                seen = result.timestamp;
286            }
287        }
288
289        return seen;
290    }
291
292    public NetworkInfo getNetworkInfo() {
293        return mNetworkInfo;
294    }
295
296    public int getSecurity() {
297        return security;
298    }
299
300    public String getSecurityString(boolean concise) {
301        Context context = mContext;
302        if (mConfig != null && mConfig.isPasspoint()) {
303            return concise ? context.getString(R.string.wifi_security_short_eap) :
304                context.getString(R.string.wifi_security_eap);
305        }
306        switch(security) {
307            case SECURITY_EAP:
308                return concise ? context.getString(R.string.wifi_security_short_eap) :
309                    context.getString(R.string.wifi_security_eap);
310            case SECURITY_PSK:
311                switch (pskType) {
312                    case PSK_WPA:
313                        return concise ? context.getString(R.string.wifi_security_short_wpa) :
314                            context.getString(R.string.wifi_security_wpa);
315                    case PSK_WPA2:
316                        return concise ? context.getString(R.string.wifi_security_short_wpa2) :
317                            context.getString(R.string.wifi_security_wpa2);
318                    case PSK_WPA_WPA2:
319                        return concise ? context.getString(R.string.wifi_security_short_wpa_wpa2) :
320                            context.getString(R.string.wifi_security_wpa_wpa2);
321                    case PSK_UNKNOWN:
322                    default:
323                        return concise ? context.getString(R.string.wifi_security_short_psk_generic)
324                                : context.getString(R.string.wifi_security_psk_generic);
325                }
326            case SECURITY_WEP:
327                return concise ? context.getString(R.string.wifi_security_short_wep) :
328                    context.getString(R.string.wifi_security_wep);
329            case SECURITY_NONE:
330            default:
331                return concise ? "" : context.getString(R.string.wifi_security_none);
332        }
333    }
334
335    public String getSsidStr() {
336        return ssid;
337    }
338
339    public String getBssid() {
340        return bssid;
341    }
342
343    public CharSequence getSsid() {
344        SpannableString str = new SpannableString(ssid);
345        str.setSpan(new TtsSpan.VerbatimBuilder(ssid).build(), 0, ssid.length(),
346                Spannable.SPAN_INCLUSIVE_INCLUSIVE);
347        return str;
348    }
349
350    public String getConfigName() {
351        if (mConfig != null && mConfig.isPasspoint()) {
352            return mConfig.providerFriendlyName;
353        } else {
354            return ssid;
355        }
356    }
357
358    public DetailedState getDetailedState() {
359        return mNetworkInfo != null ? mNetworkInfo.getDetailedState() : null;
360    }
361
362    public String getSavedNetworkSummary() {
363        if (mConfig != null) {
364            PackageManager pm = mContext.getPackageManager();
365            String systemName = pm.getNameForUid(android.os.Process.SYSTEM_UID);
366            int userId = UserHandle.getUserId(mConfig.creatorUid);
367            ApplicationInfo appInfo = null;
368            if (mConfig.creatorName != null && mConfig.creatorName.equals(systemName)) {
369                appInfo = mContext.getApplicationInfo();
370            } else {
371                try {
372                    IPackageManager ipm = AppGlobals.getPackageManager();
373                    appInfo = ipm.getApplicationInfo(mConfig.creatorName, 0 /* flags */, userId);
374                } catch (RemoteException rex) {
375                }
376            }
377            if (appInfo != null &&
378                    !appInfo.packageName.equals(mContext.getString(R.string.settings_package)) &&
379                    !appInfo.packageName.equals(
380                    mContext.getString(R.string.certinstaller_package))) {
381                return mContext.getString(R.string.saved_network, appInfo.loadLabel(pm));
382            }
383        }
384        return "";
385    }
386
387    public String getSummary() {
388        return getSettingsSummary();
389    }
390
391    public String getSettingsSummary() {
392        // Update to new summary
393        StringBuilder summary = new StringBuilder();
394
395        if (isActive() && mConfig != null && mConfig.isPasspoint()) {
396            // This is the active connection on passpoint
397            summary.append(getSummary(mContext, getDetailedState(),
398                    false, mConfig.providerFriendlyName));
399        } else if (isActive()) {
400            // This is the active connection on non-passpoint network
401            summary.append(getSummary(mContext, getDetailedState(),
402                    mInfo != null && mInfo.isEphemeral()));
403        } else if (mConfig != null && mConfig.isPasspoint()) {
404            String format = mContext.getString(R.string.available_via_passpoint);
405            summary.append(String.format(format, mConfig.providerFriendlyName));
406        } else if (mConfig != null && mConfig.hasNoInternetAccess()) {
407            summary.append(mContext.getString(R.string.wifi_no_internet));
408        } else if (mConfig != null && !mConfig.getNetworkSelectionStatus().isNetworkEnabled()) {
409            WifiConfiguration.NetworkSelectionStatus networkStatus =
410                    mConfig.getNetworkSelectionStatus();
411            switch (networkStatus.getNetworkSelectionDisableReason()) {
412                case WifiConfiguration.NetworkSelectionStatus.DISABLED_AUTHENTICATION_FAILURE:
413                    summary.append(mContext.getString(R.string.wifi_disabled_password_failure));
414                    break;
415                case WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE:
416                case WifiConfiguration.NetworkSelectionStatus.DISABLED_DNS_FAILURE:
417                    summary.append(mContext.getString(R.string.wifi_disabled_network_failure));
418                    break;
419                case WifiConfiguration.NetworkSelectionStatus.DISABLED_ASSOCIATION_REJECTION:
420                    summary.append(mContext.getString(R.string.wifi_disabled_generic));
421                    break;
422            }
423        } else if (mRssi == Integer.MAX_VALUE) { // Wifi out of range
424            summary.append(mContext.getString(R.string.wifi_not_in_range));
425        } else { // In range, not disabled.
426            if (mConfig != null) { // Is saved network
427                summary.append(mContext.getString(R.string.wifi_remembered));
428            }
429        }
430
431        if (WifiTracker.sVerboseLogging > 0) {
432            // Add RSSI/band information for this config, what was seen up to 6 seconds ago
433            // verbose WiFi Logging is only turned on thru developers settings
434            if (mInfo != null && mNetworkInfo != null) { // This is the active connection
435                summary.append(" f=" + Integer.toString(mInfo.getFrequency()));
436            }
437            summary.append(" " + getVisibilityStatus());
438            if (mConfig != null && !mConfig.getNetworkSelectionStatus().isNetworkEnabled()) {
439                summary.append(" (" + mConfig.getNetworkSelectionStatus().getNetworkStatusString());
440                if (mConfig.getNetworkSelectionStatus().getDisableTime() > 0) {
441                    long now = System.currentTimeMillis();
442                    long diff = (now - mConfig.getNetworkSelectionStatus().getDisableTime()) / 1000;
443                    long sec = diff%60; //seconds
444                    long min = (diff/60)%60; //minutes
445                    long hour = (min/60)%60; //hours
446                    summary.append(", ");
447                    if (hour > 0) summary.append(Long.toString(hour) + "h ");
448                    summary.append( Long.toString(min) + "m ");
449                    summary.append( Long.toString(sec) + "s ");
450                }
451                summary.append(")");
452            }
453
454            if (mConfig != null) {
455                WifiConfiguration.NetworkSelectionStatus networkStatus =
456                        mConfig.getNetworkSelectionStatus();
457                for (int index = WifiConfiguration.NetworkSelectionStatus.NETWORK_SELECTION_ENABLE;
458                        index < WifiConfiguration.NetworkSelectionStatus
459                        .NETWORK_SELECTION_DISABLED_MAX; index++) {
460                    if (networkStatus.getDisableReasonCounter(index) != 0) {
461                        summary.append(" " + WifiConfiguration.NetworkSelectionStatus
462                                .getNetworkDisableReasonString(index) + "="
463                                + networkStatus.getDisableReasonCounter(index));
464                    }
465                }
466            }
467        }
468        return summary.toString();
469    }
470
471    /**
472     * Returns the visibility status of the WifiConfiguration.
473     *
474     * @return autojoin debugging information
475     * TODO: use a string formatter
476     * ["rssi 5Ghz", "num results on 5GHz" / "rssi 5Ghz", "num results on 5GHz"]
477     * For instance [-40,5/-30,2]
478     */
479    private String getVisibilityStatus() {
480        StringBuilder visibility = new StringBuilder();
481        StringBuilder scans24GHz = null;
482        StringBuilder scans5GHz = null;
483        String bssid = null;
484
485        long now = System.currentTimeMillis();
486
487        if (mInfo != null) {
488            bssid = mInfo.getBSSID();
489            if (bssid != null) {
490                visibility.append(" ").append(bssid);
491            }
492            visibility.append(" rssi=").append(mInfo.getRssi());
493            visibility.append(" ");
494            visibility.append(" score=").append(mInfo.score);
495            visibility.append(String.format(" tx=%.1f,", mInfo.txSuccessRate));
496            visibility.append(String.format("%.1f,", mInfo.txRetriesRate));
497            visibility.append(String.format("%.1f ", mInfo.txBadRate));
498            visibility.append(String.format("rx=%.1f", mInfo.rxSuccessRate));
499        }
500
501        int rssi5 = WifiConfiguration.INVALID_RSSI;
502        int rssi24 = WifiConfiguration.INVALID_RSSI;
503        int num5 = 0;
504        int num24 = 0;
505        int numBlackListed = 0;
506        int n24 = 0; // Number scan results we included in the string
507        int n5 = 0; // Number scan results we included in the string
508        Map<String, ScanResult> list = mScanResultCache.snapshot();
509        // TODO: sort list by RSSI or age
510        for (ScanResult result : list.values()) {
511
512            if (result.frequency >= LOWER_FREQ_5GHZ
513                    && result.frequency <= HIGHER_FREQ_5GHZ) {
514                // Strictly speaking: [4915, 5825]
515                // number of known BSSID on 5GHz band
516                num5 = num5 + 1;
517            } else if (result.frequency >= LOWER_FREQ_24GHZ
518                    && result.frequency <= HIGHER_FREQ_24GHZ) {
519                // Strictly speaking: [2412, 2482]
520                // number of known BSSID on 2.4Ghz band
521                num24 = num24 + 1;
522            }
523
524
525            if (result.frequency >= LOWER_FREQ_5GHZ
526                    && result.frequency <= HIGHER_FREQ_5GHZ) {
527                if (result.level > rssi5) {
528                    rssi5 = result.level;
529                }
530                if (n5 < 4) {
531                    if (scans5GHz == null) scans5GHz = new StringBuilder();
532                    scans5GHz.append(" \n{").append(result.BSSID);
533                    if (bssid != null && result.BSSID.equals(bssid)) scans5GHz.append("*");
534                    scans5GHz.append("=").append(result.frequency);
535                    scans5GHz.append(",").append(result.level);
536                    scans5GHz.append("}");
537                    n5++;
538                }
539            } else if (result.frequency >= LOWER_FREQ_24GHZ
540                    && result.frequency <= HIGHER_FREQ_24GHZ) {
541                if (result.level > rssi24) {
542                    rssi24 = result.level;
543                }
544                if (n24 < 4) {
545                    if (scans24GHz == null) scans24GHz = new StringBuilder();
546                    scans24GHz.append(" \n{").append(result.BSSID);
547                    if (bssid != null && result.BSSID.equals(bssid)) scans24GHz.append("*");
548                    scans24GHz.append("=").append(result.frequency);
549                    scans24GHz.append(",").append(result.level);
550                    scans24GHz.append("}");
551                    n24++;
552                }
553            }
554        }
555        visibility.append(" [");
556        if (num24 > 0) {
557            visibility.append("(").append(num24).append(")");
558            if (n24 <= 4) {
559                if (scans24GHz != null) {
560                    visibility.append(scans24GHz.toString());
561                }
562            } else {
563                visibility.append("max=").append(rssi24);
564                if (scans24GHz != null) {
565                    visibility.append(",").append(scans24GHz.toString());
566                }
567            }
568        }
569        visibility.append(";");
570        if (num5 > 0) {
571            visibility.append("(").append(num5).append(")");
572            if (n5 <= 4) {
573                if (scans5GHz != null) {
574                    visibility.append(scans5GHz.toString());
575                }
576            } else {
577                visibility.append("max=").append(rssi5);
578                if (scans5GHz != null) {
579                    visibility.append(",").append(scans5GHz.toString());
580                }
581            }
582        }
583        if (numBlackListed > 0)
584            visibility.append("!").append(numBlackListed);
585        visibility.append("]");
586
587        return visibility.toString();
588    }
589
590    /**
591     * Return whether this is the active connection.
592     * For ephemeral connections (networkId is invalid), this returns false if the network is
593     * disconnected.
594     */
595    public boolean isActive() {
596        return mNetworkInfo != null &&
597                (networkId != WifiConfiguration.INVALID_NETWORK_ID ||
598                 mNetworkInfo.getState() != State.DISCONNECTED);
599    }
600
601    public boolean isConnectable() {
602        return getLevel() != -1 && getDetailedState() == null;
603    }
604
605    public boolean isEphemeral() {
606        return mInfo != null && mInfo.isEphemeral() &&
607                mNetworkInfo != null && mNetworkInfo.getState() != State.DISCONNECTED;
608    }
609
610    public boolean isPasspoint() {
611        return mConfig != null && mConfig.isPasspoint();
612    }
613
614    /**
615     * Return whether the given {@link WifiInfo} is for this access point.
616     * If the current AP does not have a network Id then the config is used to
617     * match based on SSID and security.
618     */
619    private boolean isInfoForThisAccessPoint(WifiConfiguration config, WifiInfo info) {
620        if (isPasspoint() == false && networkId != WifiConfiguration.INVALID_NETWORK_ID) {
621            return networkId == info.getNetworkId();
622        } else if (config != null) {
623            return matches(config);
624        }
625        else {
626            // Might be an ephemeral connection with no WifiConfiguration. Try matching on SSID.
627            // (Note that we only do this if the WifiConfiguration explicitly equals INVALID).
628            // TODO: Handle hex string SSIDs.
629            return ssid.equals(removeDoubleQuotes(info.getSSID()));
630        }
631    }
632
633    public boolean isSaved() {
634        return networkId != WifiConfiguration.INVALID_NETWORK_ID;
635    }
636
637    public Object getTag() {
638        return mTag;
639    }
640
641    public void setTag(Object tag) {
642        mTag = tag;
643    }
644
645    /**
646     * Generate and save a default wifiConfiguration with common values.
647     * Can only be called for unsecured networks.
648     */
649    public void generateOpenNetworkConfig() {
650        if (security != SECURITY_NONE)
651            throw new IllegalStateException();
652        if (mConfig != null)
653            return;
654        mConfig = new WifiConfiguration();
655        mConfig.SSID = AccessPoint.convertToQuotedString(ssid);
656        mConfig.allowedKeyManagement.set(KeyMgmt.NONE);
657    }
658
659    void loadConfig(WifiConfiguration config) {
660        if (config.isPasspoint())
661            ssid = config.providerFriendlyName;
662        else
663            ssid = (config.SSID == null ? "" : removeDoubleQuotes(config.SSID));
664
665        bssid = config.BSSID;
666        security = getSecurity(config);
667        networkId = config.networkId;
668        mConfig = config;
669    }
670
671    private void initWithScanResult(ScanResult result) {
672        ssid = result.SSID;
673        bssid = result.BSSID;
674        security = getSecurity(result);
675        if (security == SECURITY_PSK)
676            pskType = getPskType(result);
677        mRssi = result.level;
678        mSeen = result.timestamp;
679    }
680
681    public void saveWifiState(Bundle savedState) {
682        if (ssid != null) savedState.putString(KEY_SSID, getSsidStr());
683        savedState.putInt(KEY_SECURITY, security);
684        savedState.putInt(KEY_PSKTYPE, pskType);
685        if (mConfig != null) savedState.putParcelable(KEY_CONFIG, mConfig);
686        savedState.putParcelable(KEY_WIFIINFO, mInfo);
687        savedState.putParcelableArrayList(KEY_SCANRESULTCACHE,
688                new ArrayList<ScanResult>(mScanResultCache.snapshot().values()));
689        if (mNetworkInfo != null) {
690            savedState.putParcelable(KEY_NETWORKINFO, mNetworkInfo);
691        }
692    }
693
694    public void setListener(AccessPointListener listener) {
695        mAccessPointListener = listener;
696    }
697
698    boolean update(ScanResult result) {
699        if (matches(result)) {
700            /* Update the LRU timestamp, if BSSID exists */
701            mScanResultCache.get(result.BSSID);
702
703            /* Add or update the scan result for the BSSID */
704            mScanResultCache.put(result.BSSID, result);
705
706            int oldLevel = getLevel();
707            int oldRssi = getRssi();
708            mSeen = getSeen();
709            mRssi = (getRssi() + oldRssi)/2;
710            int newLevel = getLevel();
711
712            if (newLevel > 0 && newLevel != oldLevel && mAccessPointListener != null) {
713                mAccessPointListener.onLevelChanged(this);
714            }
715            // This flag only comes from scans, is not easily saved in config
716            if (security == SECURITY_PSK) {
717                pskType = getPskType(result);
718            }
719
720            if (mAccessPointListener != null) {
721                mAccessPointListener.onAccessPointChanged(this);
722            }
723
724            return true;
725        }
726        return false;
727    }
728
729    boolean update(WifiConfiguration config, WifiInfo info, NetworkInfo networkInfo) {
730        boolean reorder = false;
731        if (info != null && isInfoForThisAccessPoint(config, info)) {
732            reorder = (mInfo == null);
733            mRssi = info.getRssi();
734            mInfo = info;
735            mNetworkInfo = networkInfo;
736            if (mAccessPointListener != null) {
737                mAccessPointListener.onAccessPointChanged(this);
738            }
739        } else if (mInfo != null) {
740            reorder = true;
741            mInfo = null;
742            mNetworkInfo = null;
743            if (mAccessPointListener != null) {
744                mAccessPointListener.onAccessPointChanged(this);
745            }
746        }
747        return reorder;
748    }
749
750    void update(WifiConfiguration config) {
751        mConfig = config;
752        networkId = config.networkId;
753        if (mAccessPointListener != null) {
754            mAccessPointListener.onAccessPointChanged(this);
755        }
756    }
757
758    void setRssi(int rssi) {
759        mRssi = rssi;
760    }
761
762    public static String getSummary(Context context, String ssid, DetailedState state,
763            boolean isEphemeral, String passpointProvider) {
764        if (state == DetailedState.CONNECTED && ssid == null) {
765            if (TextUtils.isEmpty(passpointProvider) == false) {
766                // Special case for connected + passpoint networks.
767                String format = context.getString(R.string.connected_via_passpoint);
768                return String.format(format, passpointProvider);
769            } else if (isEphemeral) {
770                // Special case for connected + ephemeral networks.
771                return context.getString(R.string.connected_via_wfa);
772            }
773        }
774
775        // Case when there is wifi connected without internet connectivity.
776        final ConnectivityManager cm = (ConnectivityManager)
777                context.getSystemService(Context.CONNECTIVITY_SERVICE);
778        if (state == DetailedState.CONNECTED) {
779            IWifiManager wifiManager = IWifiManager.Stub.asInterface(
780                    ServiceManager.getService(Context.WIFI_SERVICE));
781            Network nw;
782
783            try {
784                nw = wifiManager.getCurrentNetwork();
785            } catch (RemoteException e) {
786                nw = null;
787            }
788            NetworkCapabilities nc = cm.getNetworkCapabilities(nw);
789            if (nc != null && !nc.hasCapability(nc.NET_CAPABILITY_VALIDATED)) {
790                return context.getString(R.string.wifi_connected_no_internet);
791            }
792        }
793
794        String[] formats = context.getResources().getStringArray((ssid == null)
795                ? R.array.wifi_status : R.array.wifi_status_with_ssid);
796        int index = state.ordinal();
797
798        if (index >= formats.length || formats[index].length() == 0) {
799            return "";
800        }
801        return String.format(formats[index], ssid);
802    }
803
804    public static String getSummary(Context context, DetailedState state, boolean isEphemeral) {
805        return getSummary(context, null, state, isEphemeral, null);
806    }
807
808    public static String getSummary(Context context, DetailedState state, boolean isEphemeral,
809            String passpointProvider) {
810        return getSummary(context, null, state, isEphemeral, passpointProvider);
811    }
812
813    public static String convertToQuotedString(String string) {
814        return "\"" + string + "\"";
815    }
816
817    private static int getPskType(ScanResult result) {
818        boolean wpa = result.capabilities.contains("WPA-PSK");
819        boolean wpa2 = result.capabilities.contains("WPA2-PSK");
820        if (wpa2 && wpa) {
821            return PSK_WPA_WPA2;
822        } else if (wpa2) {
823            return PSK_WPA2;
824        } else if (wpa) {
825            return PSK_WPA;
826        } else {
827            Log.w(TAG, "Received abnormal flag string: " + result.capabilities);
828            return PSK_UNKNOWN;
829        }
830    }
831
832    private static int getSecurity(ScanResult result) {
833        if (result.capabilities.contains("WEP")) {
834            return SECURITY_WEP;
835        } else if (result.capabilities.contains("PSK")) {
836            return SECURITY_PSK;
837        } else if (result.capabilities.contains("EAP")) {
838            return SECURITY_EAP;
839        }
840        return SECURITY_NONE;
841    }
842
843    static int getSecurity(WifiConfiguration config) {
844        if (config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) {
845            return SECURITY_PSK;
846        }
847        if (config.allowedKeyManagement.get(KeyMgmt.WPA_EAP) ||
848                config.allowedKeyManagement.get(KeyMgmt.IEEE8021X)) {
849            return SECURITY_EAP;
850        }
851        return (config.wepKeys[0] != null) ? SECURITY_WEP : SECURITY_NONE;
852    }
853
854    public static String securityToString(int security, int pskType) {
855        if (security == SECURITY_WEP) {
856            return "WEP";
857        } else if (security == SECURITY_PSK) {
858            if (pskType == PSK_WPA) {
859                return "WPA";
860            } else if (pskType == PSK_WPA2) {
861                return "WPA2";
862            } else if (pskType == PSK_WPA_WPA2) {
863                return "WPA_WPA2";
864            }
865            return "PSK";
866        } else if (security == SECURITY_EAP) {
867            return "EAP";
868        }
869        return "NONE";
870    }
871
872    static String removeDoubleQuotes(String string) {
873        if (TextUtils.isEmpty(string)) {
874            return "";
875        }
876        int length = string.length();
877        if ((length > 1) && (string.charAt(0) == '"')
878                && (string.charAt(length - 1) == '"')) {
879            return string.substring(1, length - 1);
880        }
881        return string;
882    }
883
884    public interface AccessPointListener {
885        void onAccessPointChanged(AccessPoint accessPoint);
886        void onLevelChanged(AccessPoint accessPoint);
887    }
888}
889