/*
* Copyright (C) 2011 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 android.net.wifi.p2p;
import android.os.Parcelable;
import android.os.Parcel;
import android.util.Log;
import java.util.regex.Pattern;
import java.util.regex.Matcher;
/**
* A class representing a Wi-Fi p2p device
*
* Note that the operations are not thread safe
* {@see WifiP2pManager}
*/
public class WifiP2pDevice implements Parcelable {
private static final String TAG = "WifiP2pDevice";
/**
* The device name is a user friendly string to identify a Wi-Fi p2p device
*/
public String deviceName = "";
/**
* The device MAC address uniquely identifies a Wi-Fi p2p device
*/
public String deviceAddress = "";
/**
* Primary device type identifies the type of device. For example, an application
* could filter the devices discovered to only display printers if the purpose is to
* enable a printing action from the user. See the Wi-Fi Direct technical specification
* for the full list of standard device types supported.
*/
public String primaryDeviceType;
/**
* Secondary device type is an optional attribute that can be provided by a device in
* addition to the primary device type.
*/
public String secondaryDeviceType;
// These definitions match the ones in wpa_supplicant
/* WPS config methods supported */
private static final int WPS_CONFIG_DISPLAY = 0x0008;
private static final int WPS_CONFIG_PUSHBUTTON = 0x0080;
private static final int WPS_CONFIG_KEYPAD = 0x0100;
/* Device Capability bitmap */
private static final int DEVICE_CAPAB_SERVICE_DISCOVERY = 1;
private static final int DEVICE_CAPAB_CLIENT_DISCOVERABILITY = 1<<1;
private static final int DEVICE_CAPAB_CONCURRENT_OPER = 1<<2;
private static final int DEVICE_CAPAB_INFRA_MANAGED = 1<<3;
private static final int DEVICE_CAPAB_DEVICE_LIMIT = 1<<4;
private static final int DEVICE_CAPAB_INVITATION_PROCEDURE = 1<<5;
/* Group Capability bitmap */
private static final int GROUP_CAPAB_GROUP_OWNER = 1;
private static final int GROUP_CAPAB_PERSISTENT_GROUP = 1<<1;
private static final int GROUP_CAPAB_GROUP_LIMIT = 1<<2;
private static final int GROUP_CAPAB_INTRA_BSS_DIST = 1<<3;
private static final int GROUP_CAPAB_CROSS_CONN = 1<<4;
private static final int GROUP_CAPAB_PERSISTENT_RECONN = 1<<5;
private static final int GROUP_CAPAB_GROUP_FORMATION = 1<<6;
/**
* WPS config methods supported
* @hide
*/
public int wpsConfigMethodsSupported;
/**
* Device capability
* @hide
*/
public int deviceCapability;
/**
* Group capability
* @hide
*/
public int groupCapability;
public static final int CONNECTED = 0;
public static final int INVITED = 1;
public static final int FAILED = 2;
public static final int AVAILABLE = 3;
public static final int UNAVAILABLE = 4;
/** Device connection status */
public int status = UNAVAILABLE;
/** @hide */
public WifiP2pWfdInfo wfdInfo;
/** Detailed device string pattern with WFD info
* Example:
* P2P-DEVICE-FOUND 00:18:6b:de:a3:6e p2p_dev_addr=00:18:6b:de:a3:6e
* pri_dev_type=1-0050F204-1 name='DWD-300-DEA36E' config_methods=0x188
* dev_capab=0x21 group_capab=0x9
*/
private static final Pattern detailedDevicePattern = Pattern.compile(
"((?:[0-9a-f]{2}:){5}[0-9a-f]{2}) " +
"(\\d+ )?" +
"p2p_dev_addr=((?:[0-9a-f]{2}:){5}[0-9a-f]{2}) " +
"pri_dev_type=(\\d+-[0-9a-fA-F]+-\\d+) " +
"name='(.*)' " +
"config_methods=(0x[0-9a-fA-F]+) " +
"dev_capab=(0x[0-9a-fA-F]+) " +
"group_capab=(0x[0-9a-fA-F]+)" +
"( wfd_dev_info=0x([0-9a-fA-F]{12}))?"
);
/** 2 token device address pattern
* Example:
* P2P-DEVICE-LOST p2p_dev_addr=fa:7b:7a:42:02:13
* AP-STA-DISCONNECTED 42:fc:89:a8:96:09
*/
private static final Pattern twoTokenPattern = Pattern.compile(
"(p2p_dev_addr=)?((?:[0-9a-f]{2}:){5}[0-9a-f]{2})"
);
/** 3 token device address pattern
* Example:
* AP-STA-CONNECTED 42:fc:89:a8:96:09 p2p_dev_addr=fa:7b:7a:42:02:13
* AP-STA-DISCONNECTED 42:fc:89:a8:96:09 p2p_dev_addr=fa:7b:7a:42:02:13
*/
private static final Pattern threeTokenPattern = Pattern.compile(
"(?:[0-9a-f]{2}:){5}[0-9a-f]{2} p2p_dev_addr=((?:[0-9a-f]{2}:){5}[0-9a-f]{2})"
);
public WifiP2pDevice() {
}
/**
* @param string formats supported include
* P2P-DEVICE-FOUND fa:7b:7a:42:02:13 p2p_dev_addr=fa:7b:7a:42:02:13
* pri_dev_type=1-0050F204-1 name='p2p-TEST1' config_methods=0x188 dev_capab=0x27
* group_capab=0x0 wfd_dev_info=000006015d022a0032
*
* P2P-DEVICE-LOST p2p_dev_addr=fa:7b:7a:42:02:13
*
* AP-STA-CONNECTED 42:fc:89:a8:96:09 [p2p_dev_addr=02:90:4c:a0:92:54]
*
* AP-STA-DISCONNECTED 42:fc:89:a8:96:09 [p2p_dev_addr=02:90:4c:a0:92:54]
*
* fa:7b:7a:42:02:13
*
* Note: The events formats can be looked up in the wpa_supplicant code
* @hide
*/
public WifiP2pDevice(String string) throws IllegalArgumentException {
String[] tokens = string.split("[ \n]");
Matcher match;
if (tokens.length < 1) {
throw new IllegalArgumentException("Malformed supplicant event");
}
switch (tokens.length) {
case 1:
/* Just a device address */
deviceAddress = string;
return;
case 2:
match = twoTokenPattern.matcher(string);
if (!match.find()) {
throw new IllegalArgumentException("Malformed supplicant event");
}
deviceAddress = match.group(2);
return;
case 3:
match = threeTokenPattern.matcher(string);
if (!match.find()) {
throw new IllegalArgumentException("Malformed supplicant event");
}
deviceAddress = match.group(1);
return;
default:
match = detailedDevicePattern.matcher(string);
if (!match.find()) {
throw new IllegalArgumentException("Malformed supplicant event");
}
deviceAddress = match.group(3);
primaryDeviceType = match.group(4);
deviceName = match.group(5);
wpsConfigMethodsSupported = parseHex(match.group(6));
deviceCapability = parseHex(match.group(7));
groupCapability = parseHex(match.group(8));
if (match.group(9) != null) {
String str = match.group(10);
wfdInfo = new WifiP2pWfdInfo(parseHex(str.substring(0,4)),
parseHex(str.substring(4,8)),
parseHex(str.substring(8,12)));
}
break;
}
if (tokens[0].startsWith("P2P-DEVICE-FOUND")) {
status = AVAILABLE;
}
}
/** Returns true if WPS push button configuration is supported */
public boolean wpsPbcSupported() {
return (wpsConfigMethodsSupported & WPS_CONFIG_PUSHBUTTON) != 0;
}
/** Returns true if WPS keypad configuration is supported */
public boolean wpsKeypadSupported() {
return (wpsConfigMethodsSupported & WPS_CONFIG_KEYPAD) != 0;
}
/** Returns true if WPS display configuration is supported */
public boolean wpsDisplaySupported() {
return (wpsConfigMethodsSupported & WPS_CONFIG_DISPLAY) != 0;
}
/** Returns true if the device is capable of service discovery */
public boolean isServiceDiscoveryCapable() {
return (deviceCapability & DEVICE_CAPAB_SERVICE_DISCOVERY) != 0;
}
/** Returns true if the device is capable of invitation {@hide}*/
public boolean isInvitationCapable() {
return (deviceCapability & DEVICE_CAPAB_INVITATION_PROCEDURE) != 0;
}
/** Returns true if the device reaches the limit. {@hide}*/
public boolean isDeviceLimit() {
return (deviceCapability & DEVICE_CAPAB_DEVICE_LIMIT) != 0;
}
/** Returns true if the device is a group owner */
public boolean isGroupOwner() {
return (groupCapability & GROUP_CAPAB_GROUP_OWNER) != 0;
}
/** Returns true if the group reaches the limit. {@hide}*/
public boolean isGroupLimit() {
return (groupCapability & GROUP_CAPAB_GROUP_LIMIT) != 0;
}
/**
* Update device details. This will be throw an exception if the device address
* does not match.
* @param device to be updated
* @throws IllegalArgumentException if the device is null or device address does not match
* @hide
*/
public void update(WifiP2pDevice device) {
updateSupplicantDetails(device);
status = device.status;
}
/** Updates details obtained from supplicant @hide */
public void updateSupplicantDetails(WifiP2pDevice device) {
if (device == null) {
throw new IllegalArgumentException("device is null");
}
if (device.deviceAddress == null) {
throw new IllegalArgumentException("deviceAddress is null");
}
if (!deviceAddress.equals(device.deviceAddress)) {
throw new IllegalArgumentException("deviceAddress does not match");
}
deviceName = device.deviceName;
primaryDeviceType = device.primaryDeviceType;
secondaryDeviceType = device.secondaryDeviceType;
wpsConfigMethodsSupported = device.wpsConfigMethodsSupported;
deviceCapability = device.deviceCapability;
groupCapability = device.groupCapability;
wfdInfo = device.wfdInfo;
}
@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (!(obj instanceof WifiP2pDevice)) return false;
WifiP2pDevice other = (WifiP2pDevice) obj;
if (other == null || other.deviceAddress == null) {
return (deviceAddress == null);
}
return other.deviceAddress.equals(deviceAddress);
}
public String toString() {
StringBuffer sbuf = new StringBuffer();
sbuf.append("Device: ").append(deviceName);
sbuf.append("\n deviceAddress: ").append(deviceAddress);
sbuf.append("\n primary type: ").append(primaryDeviceType);
sbuf.append("\n secondary type: ").append(secondaryDeviceType);
sbuf.append("\n wps: ").append(wpsConfigMethodsSupported);
sbuf.append("\n grpcapab: ").append(groupCapability);
sbuf.append("\n devcapab: ").append(deviceCapability);
sbuf.append("\n status: ").append(status);
sbuf.append("\n wfdInfo: ").append(wfdInfo);
return sbuf.toString();
}
/** Implement the Parcelable interface */
public int describeContents() {
return 0;
}
/** copy constructor */
public WifiP2pDevice(WifiP2pDevice source) {
if (source != null) {
deviceName = source.deviceName;
deviceAddress = source.deviceAddress;
primaryDeviceType = source.primaryDeviceType;
secondaryDeviceType = source.secondaryDeviceType;
wpsConfigMethodsSupported = source.wpsConfigMethodsSupported;
deviceCapability = source.deviceCapability;
groupCapability = source.groupCapability;
status = source.status;
wfdInfo = new WifiP2pWfdInfo(source.wfdInfo);
}
}
/** Implement the Parcelable interface */
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(deviceName);
dest.writeString(deviceAddress);
dest.writeString(primaryDeviceType);
dest.writeString(secondaryDeviceType);
dest.writeInt(wpsConfigMethodsSupported);
dest.writeInt(deviceCapability);
dest.writeInt(groupCapability);
dest.writeInt(status);
if (wfdInfo != null) {
dest.writeInt(1);
wfdInfo.writeToParcel(dest, flags);
} else {
dest.writeInt(0);
}
}
/** Implement the Parcelable interface */
public static final Creator<WifiP2pDevice> CREATOR =
new Creator<WifiP2pDevice>() {
public WifiP2pDevice createFromParcel(Parcel in) {
WifiP2pDevice device = new WifiP2pDevice();
device.deviceName = in.readString();
device.deviceAddress = in.readString();
device.primaryDeviceType = in.readString();
device.secondaryDeviceType = in.readString();
device.wpsConfigMethodsSupported = in.readInt();
device.deviceCapability = in.readInt();
device.groupCapability = in.readInt();
device.status = in.readInt();
if (in.readInt() == 1) {
device.wfdInfo = WifiP2pWfdInfo.CREATOR.createFromParcel(in);
}
return device;
}
public WifiP2pDevice[] newArray(int size) {
return new WifiP2pDevice[size];
}
};
//supported formats: 0x1abc, 0X1abc, 1abc
private int parseHex(String hexString) {
int num = 0;
if (hexString.startsWith("0x") || hexString.startsWith("0X")) {
hexString = hexString.substring(2);
}
try {
num = Integer.parseInt(hexString, 16);
} catch(NumberFormatException e) {
Log.e(TAG, "Failed to parse hex string " + hexString);
}
return num;
}
}
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