WifiP2pProvDiscEvent.java revision 618455f7e7255019c8cc08a734ba7c52b67a7dc8 
1/*
2 * Copyright (C) 2011 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.p2p;
18
19import android.os.Parcelable;
20import android.os.Parcel;
21import android.util.Log;
22
23/**
24 * A class representing a Wi-Fi p2p provisional discovery request/response
25 * See {@link #WifiP2pProvDiscEvent} for supported types
26 *
27 * @hide
28 */
29public class WifiP2pProvDiscEvent {
30
31    private static final String TAG = "WifiP2pProvDiscEvent";
32
33    public static final int PBC_REQ     = 1;
34    public static final int PBC_RSP     = 2;
35    public static final int ENTER_PIN   = 3;
36    public static final int SHOW_PIN    = 4;
37
38    /* One of PBC_REQ, PBC_RSP, ENTER_PIN or SHOW_PIN */
39    public int event;
40
41    public WifiP2pDevice device;
42
43    /* Valid when event = SHOW_PIN */
44    public String pin;
45
46    public WifiP2pProvDiscEvent() {
47        device = new WifiP2pDevice();
48    }
49
50    /**
51     * @param string formats supported include
52     *
53     *  P2P-PROV-DISC-PBC-REQ 42:fc:89:e1:e2:27 p2p_dev_addr=42:fc:89:e1:e2:27
54     *  pri_dev_type=1-0050F204-1 name='p2p-TEST2' config_methods=0x188 dev_capab=0x27
55     *  group_capab=0x0
56     *
57     *  P2P-PROV-DISC-PBC-RESP 02:12:47:f2:5a:36
58     *
59     *  P2P-PROV-DISC-ENTER-PIN 42:fc:89:e1:e2:27 p2p_dev_addr=42:fc:89:e1:e2:27
60     *  pri_dev_type=1-0050F204-1 name='p2p-TEST2' config_methods=0x188 dev_capab=0x27
61     *  group_capab=0x0
62     *
63     *  P2P-PROV-DISC-SHOW-PIN 42:fc:89:e1:e2:27 44490607 p2p_dev_addr=42:fc:89:e1:e2:27
64     *  pri_dev_type=1-0050F204-1 name='p2p-TEST2' config_methods=0x188 dev_capab=0x27
65     *  group_capab=0x0
66     *
67     *  Note: The events formats can be looked up in the wpa_supplicant code
68     * @hide
69     */
70    public WifiP2pProvDiscEvent(String string) throws IllegalArgumentException {
71        String[] tokens = string.split(" ");
72
73        if (tokens.length < 2) {
74            throw new IllegalArgumentException("Malformed event " + string);
75        }
76
77        if (tokens[0].endsWith("PBC-REQ")) event = PBC_REQ;
78        else if (tokens[0].endsWith("PBC-RESP")) event = PBC_RSP;
79        else if (tokens[0].endsWith("ENTER-PIN")) event = ENTER_PIN;
80        else if (tokens[0].endsWith("SHOW-PIN")) event = SHOW_PIN;
81        else throw new IllegalArgumentException("Malformed event " + string);
82
83        device = new WifiP2pDevice();
84
85        for (String token : tokens) {
86            String[] nameValue = token.split("=");
87            if (nameValue.length != 2) {
88                //mac address without key is device address
89                if (token.matches("(([0-9a-f]{2}:){5}[0-9a-f]{2})")) {
90                    device.deviceAddress = token;
91                } else if (token.matches("[0-9]+")) {
92                    pin = token;
93                } else {
94                    //ignore;
95                }
96                continue;
97            }
98
99            if (nameValue[0].equals("p2p_dev_addr")) {
100                device.deviceAddress = nameValue[1];
101                continue;
102            }
103
104            if (nameValue[0].equals("pri_dev_type")) {
105                device.primaryDeviceType = nameValue[1];
106                continue;
107            }
108
109            if (nameValue[0].equals("name")) {
110                device.deviceName = trimQuotes(nameValue[1]);
111                continue;
112            }
113
114            if (nameValue[0].equals("config_methods")) {
115                device.wpsConfigMethodsSupported = parseHex(nameValue[1]);
116                continue;
117            }
118
119            if (nameValue[0].equals("dev_capab")) {
120                device.deviceCapability = parseHex(nameValue[1]);
121                continue;
122            }
123
124            if (nameValue[0].equals("group_capab")) {
125                device.groupCapability = parseHex(nameValue[1]);
126                continue;
127            }
128        }
129    }
130
131    public String toString() {
132        StringBuffer sbuf = new StringBuffer();
133        sbuf.append(device);
134        sbuf.append("\n event: ").append(event);
135        sbuf.append("\n pin: ").append(pin);
136        return sbuf.toString();
137    }
138
139    private String trimQuotes(String str) {
140        str = str.trim();
141        if (str.startsWith("'") && str.endsWith("'")) {
142            return str.substring(1, str.length()-1);
143        }
144        return str;
145    }
146
147    //supported formats: 0x1abc, 0X1abc, 1abc
148    private int parseHex(String hexString) {
149        int num = 0;
150        if (hexString.startsWith("0x") || hexString.startsWith("0X")) {
151            hexString = hexString.substring(2);
152        }
153
154        try {
155            num = Integer.parseInt(hexString, 16);
156        } catch(NumberFormatException e) {
157            Log.e(TAG, "Failed to parse hex string " + hexString);
158        }
159        return num;
160    }
161}
162