1/*
2 * Copyright (C) 2014 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 android.net.wifi;
18
19import android.annotation.SystemApi;
20
21import android.os.Parcel;
22import android.os.Parcelable;
23import android.text.TextUtils;
24
25import java.util.HashMap;
26
27/**
28 * Wifi Connection Statistics: gather various stats regarding WiFi connections,
29 * connection requests, auto-join
30 * and WiFi usage.
31 * @hide
32 */
33@SystemApi
34public class WifiConnectionStatistics implements Parcelable {
35    private static final String TAG = "WifiConnnectionStatistics";
36
37    /**
38     *  history of past connection to untrusted SSID
39     *  Key = SSID
40     *  Value = num connection
41     */
42    public HashMap<String, WifiNetworkConnectionStatistics> untrustedNetworkHistory;
43
44    // Number of time we polled the chip and were on 5GHz
45    public int num5GhzConnected;
46
47    // Number of time we polled the chip and were on 2.4GHz
48    public int num24GhzConnected;
49
50    // Number autojoin attempts
51    public int numAutoJoinAttempt;
52
53    // Number auto-roam attempts
54    public int numAutoRoamAttempt;
55
56    // Number wifimanager join attempts
57    public int numWifiManagerJoinAttempt;
58
59    public WifiConnectionStatistics() {
60        untrustedNetworkHistory = new HashMap<String, WifiNetworkConnectionStatistics>();
61    }
62
63    public void incrementOrAddUntrusted(String SSID, int connection, int usage) {
64        WifiNetworkConnectionStatistics stats;
65        if (TextUtils.isEmpty(SSID))
66            return;
67        if (untrustedNetworkHistory.containsKey(SSID)) {
68            stats = untrustedNetworkHistory.get(SSID);
69            if (stats != null){
70                stats.numConnection = connection + stats.numConnection;
71                stats.numUsage = usage + stats.numUsage;
72            }
73        } else {
74            stats = new WifiNetworkConnectionStatistics(connection, usage);
75        }
76        if (stats != null) {
77            untrustedNetworkHistory.put(SSID, stats);
78        }
79    }
80
81    @Override
82    public String toString() {
83        StringBuilder sbuf = new StringBuilder();
84        sbuf.append("Connected on: 2.4Ghz=").append(num24GhzConnected);
85        sbuf.append(" 5Ghz=").append(num5GhzConnected).append("\n");
86        sbuf.append(" join=").append(numWifiManagerJoinAttempt);
87        sbuf.append("\\").append(numAutoJoinAttempt).append("\n");
88        sbuf.append(" roam=").append(numAutoRoamAttempt).append("\n");
89
90        for (String Key : untrustedNetworkHistory.keySet()) {
91            WifiNetworkConnectionStatistics stats = untrustedNetworkHistory.get(Key);
92            if (stats != null) {
93                sbuf.append(Key).append(" ").append(stats.toString()).append("\n");
94            }
95        }
96        return sbuf.toString();
97    }
98
99    /** copy constructor*/
100    public WifiConnectionStatistics(WifiConnectionStatistics source) {
101        untrustedNetworkHistory = new HashMap<String, WifiNetworkConnectionStatistics>();
102        if (source != null) {
103            untrustedNetworkHistory.putAll(source.untrustedNetworkHistory);
104        }
105    }
106
107    /** Implement the Parcelable interface */
108    public int describeContents() {
109        return 0;
110    }
111
112    /** Implement the Parcelable interface */
113    @Override
114    public void writeToParcel(Parcel dest, int flags) {
115        dest.writeInt(num24GhzConnected);
116        dest.writeInt(num5GhzConnected);
117        dest.writeInt(numAutoJoinAttempt);
118        dest.writeInt(numAutoRoamAttempt);
119        dest.writeInt(numWifiManagerJoinAttempt);
120
121        dest.writeInt(untrustedNetworkHistory.size());
122        for (String Key : untrustedNetworkHistory.keySet()) {
123            WifiNetworkConnectionStatistics num = untrustedNetworkHistory.get(Key);
124            dest.writeString(Key);
125            dest.writeInt(num.numConnection);
126            dest.writeInt(num.numUsage);
127
128        }
129    }
130
131    /** Implement the Parcelable interface */
132    public static final Creator<WifiConnectionStatistics> CREATOR =
133        new Creator<WifiConnectionStatistics>() {
134            public WifiConnectionStatistics createFromParcel(Parcel in) {
135                WifiConnectionStatistics stats = new WifiConnectionStatistics();
136                stats.num24GhzConnected = in.readInt();
137                stats.num5GhzConnected = in.readInt();
138                stats.numAutoJoinAttempt = in.readInt();
139                stats.numAutoRoamAttempt = in.readInt();
140                stats.numWifiManagerJoinAttempt = in.readInt();
141                int n = in.readInt();
142                while (n-- > 0) {
143                    String Key = in.readString();
144                    int numConnection = in.readInt();
145                    int numUsage = in.readInt();
146                    WifiNetworkConnectionStatistics st =
147                            new WifiNetworkConnectionStatistics(numConnection, numUsage);
148                    stats.untrustedNetworkHistory.put(Key, st);
149                }
150                return stats;
151            }
152
153            public WifiConnectionStatistics[] newArray(int size) {
154                return new WifiConnectionStatistics[size];
155            }
156        };
157}
158