618 lines
22 KiB
Java
618 lines
22 KiB
Java
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.net.wifi.p2p;
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import android.annotation.FlaggedApi;
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import android.annotation.NonNull;
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import android.annotation.Nullable;
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import android.annotation.SystemApi;
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import android.compat.annotation.UnsupportedAppUsage;
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import android.net.MacAddress;
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import android.net.wifi.OuiKeyedData;
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import android.net.wifi.ParcelUtil;
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import android.net.wifi.ScanResult;
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import android.os.Build;
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import android.os.Parcel;
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import android.os.Parcelable;
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import android.util.Log;
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import androidx.annotation.RequiresApi;
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import com.android.modules.utils.build.SdkLevel;
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import com.android.wifi.flags.Flags;
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import java.net.InetAddress;
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import java.net.UnknownHostException;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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import java.util.Objects;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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/**
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* A class representing a Wi-Fi p2p device
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*
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* Note that the operations are not thread safe
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* {@see WifiP2pManager}
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*/
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public class WifiP2pDevice implements Parcelable {
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private static final String TAG = "WifiP2pDevice";
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/**
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* The device name is a user friendly string to identify a Wi-Fi p2p device
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*/
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public String deviceName = "";
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/**
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* The device MAC address uniquely identifies a Wi-Fi p2p device
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*/
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public String deviceAddress = "";
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/**
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* The device interface MAC address. This field is valid when the device is a part of the group
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*/
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@Nullable private MacAddress mInterfaceMacAddress;
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/**
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* The IP address of the device. This field is valid when the device is a part of the group.
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*/
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@Nullable private InetAddress mIpAddress;
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/**
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* Primary device type identifies the type of device. For example, an application
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* could filter the devices discovered to only display printers if the purpose is to
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* enable a printing action from the user. See the Wi-Fi Direct technical specification
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* for the full list of standard device types supported.
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*/
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public String primaryDeviceType;
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/**
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* Secondary device type is an optional attribute that can be provided by a device in
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* addition to the primary device type.
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*/
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public String secondaryDeviceType;
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// These definitions match the ones in wpa_supplicant
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/* WPS config methods supported */
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private static final int WPS_CONFIG_DISPLAY = 0x0008;
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private static final int WPS_CONFIG_PUSHBUTTON = 0x0080;
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private static final int WPS_CONFIG_KEYPAD = 0x0100;
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/* Device Capability bitmap */
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private static final int DEVICE_CAPAB_SERVICE_DISCOVERY = 1;
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@SuppressWarnings("unused")
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private static final int DEVICE_CAPAB_CLIENT_DISCOVERABILITY = 1<<1;
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@SuppressWarnings("unused")
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private static final int DEVICE_CAPAB_CONCURRENT_OPER = 1<<2;
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@SuppressWarnings("unused")
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private static final int DEVICE_CAPAB_INFRA_MANAGED = 1<<3;
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@SuppressWarnings("unused")
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private static final int DEVICE_CAPAB_DEVICE_LIMIT = 1<<4;
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private static final int DEVICE_CAPAB_INVITATION_PROCEDURE = 1<<5;
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/* Group Capability bitmap */
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private static final int GROUP_CAPAB_GROUP_OWNER = 1;
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@SuppressWarnings("unused")
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private static final int GROUP_CAPAB_PERSISTENT_GROUP = 1<<1;
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private static final int GROUP_CAPAB_GROUP_LIMIT = 1<<2;
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@SuppressWarnings("unused")
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private static final int GROUP_CAPAB_INTRA_BSS_DIST = 1<<3;
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@SuppressWarnings("unused")
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private static final int GROUP_CAPAB_CROSS_CONN = 1<<4;
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@SuppressWarnings("unused")
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private static final int GROUP_CAPAB_PERSISTENT_RECONN = 1<<5;
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@SuppressWarnings("unused")
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private static final int GROUP_CAPAB_GROUP_FORMATION = 1<<6;
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/**
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* WPS config methods supported
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* @hide
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*/
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@UnsupportedAppUsage
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public int wpsConfigMethodsSupported;
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/**
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* Device capability
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* @hide
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*/
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@UnsupportedAppUsage
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public int deviceCapability;
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/**
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* Group capability
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* @hide
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*/
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@UnsupportedAppUsage
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public int groupCapability;
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public static final int CONNECTED = 0;
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public static final int INVITED = 1;
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public static final int FAILED = 2;
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public static final int AVAILABLE = 3;
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public static final int UNAVAILABLE = 4;
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/** Device connection status */
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public int status = UNAVAILABLE;
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/** @hide */
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@UnsupportedAppUsage
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public WifiP2pWfdInfo wfdInfo;
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/** This stores vendor-specific information element from the native side. */
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private List<ScanResult.InformationElement> mVendorElements;
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/** Detailed device string pattern with WFD info
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* Example:
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* P2P-DEVICE-FOUND 00:18:6b:de:a3:6e p2p_dev_addr=00:18:6b:de:a3:6e
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* pri_dev_type=1-0050F204-1 name='DWD-300-DEA36E' config_methods=0x188
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* dev_capab=0x21 group_capab=0x9
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*/
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private static final Pattern detailedDevicePattern = Pattern.compile(
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"((?:[0-9a-f]{2}:){5}[0-9a-f]{2}) "
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+ "(\\d+ )?"
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+ "p2p_dev_addr=((?:[0-9a-f]{2}:){5}[0-9a-f]{2}) "
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+ "pri_dev_type=(\\d+-[0-9a-fA-F]+-\\d+) "
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+ "name='(.*)' "
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+ "config_methods=(0x[0-9a-fA-F]+) "
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+ "dev_capab=(0x[0-9a-fA-F]+) "
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+ "group_capab=(0x[0-9a-fA-F]+)"
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+ "( wfd_dev_info=0x([0-9a-fA-F]{12}))?"
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+ "( wfd_r2_dev_info=0x([0-9a-fA-F]{4}))?"
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);
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/** 2 token device address pattern
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* Example:
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* P2P-DEVICE-LOST p2p_dev_addr=fa:7b:7a:42:02:13
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* AP-STA-DISCONNECTED 42:fc:89:a8:96:09
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*/
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private static final Pattern twoTokenPattern = Pattern.compile(
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"(p2p_dev_addr=)?((?:[0-9a-f]{2}:){5}[0-9a-f]{2})"
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);
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/** 3 token device address pattern
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* Example:
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* AP-STA-CONNECTED 42:fc:89:a8:96:09 p2p_dev_addr=fa:7b:7a:42:02:13
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* AP-STA-DISCONNECTED 42:fc:89:a8:96:09 p2p_dev_addr=fa:7b:7a:42:02:13
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*/
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private static final Pattern threeTokenPattern = Pattern.compile(
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"(?:[0-9a-f]{2}:){5}[0-9a-f]{2} p2p_dev_addr=((?:[0-9a-f]{2}:){5}[0-9a-f]{2})"
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);
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/** List of {@link OuiKeyedData} providing vendor-specific configuration data. */
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private @NonNull List<OuiKeyedData> mVendorData = Collections.emptyList();
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/**
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* Return the vendor-provided configuration data, if it exists. See also {@link
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* #setVendorData(List)}
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*
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* @return Vendor configuration data, or empty list if it does not exist.
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* @hide
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*/
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@RequiresApi(Build.VERSION_CODES.VANILLA_ICE_CREAM)
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@FlaggedApi(Flags.FLAG_ANDROID_V_WIFI_API)
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@SystemApi
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@NonNull
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public List<OuiKeyedData> getVendorData() {
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if (!SdkLevel.isAtLeastV()) {
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throw new UnsupportedOperationException();
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}
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return mVendorData;
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}
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public WifiP2pDevice() {
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}
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/**
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* @param string formats supported include
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* P2P-DEVICE-FOUND fa:7b:7a:42:02:13 p2p_dev_addr=fa:7b:7a:42:02:13
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* pri_dev_type=1-0050F204-1 name='p2p-TEST1' config_methods=0x188 dev_capab=0x27
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* group_capab=0x0 wfd_dev_info=000006015d022a0032
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*
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* P2P-DEVICE-LOST p2p_dev_addr=fa:7b:7a:42:02:13
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*
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* AP-STA-CONNECTED 42:fc:89:a8:96:09 [p2p_dev_addr=02:90:4c:a0:92:54]
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*
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* AP-STA-DISCONNECTED 42:fc:89:a8:96:09 [p2p_dev_addr=02:90:4c:a0:92:54]
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*
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* fa:7b:7a:42:02:13
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*
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* Note: The events formats can be looked up in the wpa_supplicant code
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* @hide
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*/
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@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
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public WifiP2pDevice(String string) throws IllegalArgumentException {
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String[] tokens = string.split("[ \n]");
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Matcher match;
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if (tokens.length < 1) {
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throw new IllegalArgumentException("Malformed supplicant event");
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}
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switch (tokens.length) {
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case 1:
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/* Just a device address */
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deviceAddress = string;
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return;
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case 2:
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match = twoTokenPattern.matcher(string);
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if (!match.find()) {
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throw new IllegalArgumentException("Malformed supplicant event");
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}
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deviceAddress = match.group(2);
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return;
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case 3:
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match = threeTokenPattern.matcher(string);
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if (!match.find()) {
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throw new IllegalArgumentException("Malformed supplicant event");
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}
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deviceAddress = match.group(1);
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return;
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default:
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match = detailedDevicePattern.matcher(string);
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if (!match.find()) {
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throw new IllegalArgumentException("Malformed supplicant event");
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}
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deviceAddress = match.group(3);
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primaryDeviceType = match.group(4);
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deviceName = match.group(5);
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wpsConfigMethodsSupported = parseHex(match.group(6));
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deviceCapability = parseHex(match.group(7));
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groupCapability = parseHex(match.group(8));
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if (match.group(9) != null) {
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String str = match.group(10);
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if (null == str) break;
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wfdInfo = new WifiP2pWfdInfo(parseHex(str.substring(0,4)),
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parseHex(str.substring(4,8)),
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parseHex(str.substring(8,12)));
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if (match.group(11) != null && SdkLevel.isAtLeastS()) {
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String r2str = match.group(12);
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if (null == r2str) break;
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wfdInfo.setR2DeviceType(parseHex(r2str.substring(0, 4)));
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}
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}
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break;
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}
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if (tokens[0].startsWith("P2P-DEVICE-FOUND")) {
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status = AVAILABLE;
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}
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}
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/** The Wifi Display information for this device, or null if unavailable. */
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@Nullable
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public WifiP2pWfdInfo getWfdInfo() {
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return wfdInfo;
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}
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/** Returns true if WPS push button configuration is supported */
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public boolean wpsPbcSupported() {
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return (wpsConfigMethodsSupported & WPS_CONFIG_PUSHBUTTON) != 0;
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}
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/** Returns true if WPS keypad configuration is supported */
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public boolean wpsKeypadSupported() {
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return (wpsConfigMethodsSupported & WPS_CONFIG_KEYPAD) != 0;
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}
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/** Returns true if WPS display configuration is supported */
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public boolean wpsDisplaySupported() {
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return (wpsConfigMethodsSupported & WPS_CONFIG_DISPLAY) != 0;
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}
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/** Returns true if the device is capable of service discovery */
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public boolean isServiceDiscoveryCapable() {
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return (deviceCapability & DEVICE_CAPAB_SERVICE_DISCOVERY) != 0;
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}
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/** Returns true if the device is capable of invitation {@hide}*/
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public boolean isInvitationCapable() {
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return (deviceCapability & DEVICE_CAPAB_INVITATION_PROCEDURE) != 0;
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}
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/** Returns true if the device reaches the limit. {@hide}*/
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public boolean isDeviceLimit() {
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return (deviceCapability & DEVICE_CAPAB_DEVICE_LIMIT) != 0;
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}
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/** Returns true if the device is a group owner */
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public boolean isGroupOwner() {
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return (groupCapability & GROUP_CAPAB_GROUP_OWNER) != 0;
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}
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/** Returns true if the group reaches the limit. {@hide}*/
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public boolean isGroupLimit() {
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return (groupCapability & GROUP_CAPAB_GROUP_LIMIT) != 0;
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}
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/**
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* Update this device's details using another {@link WifiP2pDevice} instance.
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* This will throw an exception if the device address does not match.
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*
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* @param device another instance of {@link WifiP2pDevice} used to update this instance.
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* @throws IllegalArgumentException if the device is null or the device address does not match
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*/
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public void update(@NonNull WifiP2pDevice device) {
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updateSupplicantDetails(device);
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status = device.status;
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}
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/** Updates details obtained from supplicant @hide */
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public void updateSupplicantDetails(WifiP2pDevice device) {
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if (device == null) {
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throw new IllegalArgumentException("device is null");
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}
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if (device.deviceAddress == null) {
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throw new IllegalArgumentException("deviceAddress is null");
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}
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if (!deviceAddress.equals(device.deviceAddress)) {
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throw new IllegalArgumentException("deviceAddress does not match");
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}
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mInterfaceMacAddress = device.mInterfaceMacAddress;
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deviceName = device.deviceName;
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primaryDeviceType = device.primaryDeviceType;
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secondaryDeviceType = device.secondaryDeviceType;
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wpsConfigMethodsSupported = device.wpsConfigMethodsSupported;
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deviceCapability = device.deviceCapability;
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groupCapability = device.groupCapability;
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wfdInfo = device.wfdInfo;
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}
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/**
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* Set vendor-specific information elements.
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* @hide
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*/
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public void setVendorElements(
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List<ScanResult.InformationElement> vendorElements) {
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if (vendorElements == null) {
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mVendorElements = null;
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return;
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}
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mVendorElements = new ArrayList<>(vendorElements);
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}
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/**
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* Set additional vendor-provided configuration data.
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*
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* @param vendorData List of {@link android.net.wifi.OuiKeyedData} containing the
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* vendor-provided configuration data. Note that multiple elements with
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* the same OUI are allowed.
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* @hide
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*/
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@RequiresApi(Build.VERSION_CODES.VANILLA_ICE_CREAM)
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@FlaggedApi(Flags.FLAG_ANDROID_V_WIFI_API)
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@SystemApi
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public void setVendorData(@NonNull List<OuiKeyedData> vendorData) {
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if (!SdkLevel.isAtLeastV()) {
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throw new UnsupportedOperationException();
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}
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if (vendorData == null) {
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throw new IllegalArgumentException("setVendorData received a null value");
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}
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mVendorData = vendorData;
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}
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/**
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* Get the vendor-specific information elements received as part of the discovery
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* of the peer device.
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*
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* @return the list of vendor-specific information elements
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* The information element format is defined in the IEEE 802.11-2016 spec
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* Table 9-77.
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*/
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@NonNull public List<ScanResult.InformationElement> getVendorElements() {
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if (mVendorElements == null) return Collections.emptyList();
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return new ArrayList<>(mVendorElements);
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}
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/**
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* Get the device interface MAC address if the device is a part of the group; otherwise null.
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*
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* @return the interface MAC address if the device is a part of the group; otherwise null.
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* @hide
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*/
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@Nullable public MacAddress getInterfaceMacAddress() {
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return mInterfaceMacAddress;
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}
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/**
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* Set the device interface MAC address.
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* @hide
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*/
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public void setInterfaceMacAddress(@Nullable MacAddress interfaceAddress) {
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mInterfaceMacAddress = interfaceAddress;
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}
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/**
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* Get the IP address of the connected client device.
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* The application should listen to {@link WifiP2pManager#WIFI_P2P_CONNECTION_CHANGED_ACTION}
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* broadcast to obtain the IP address of the connected client. When system assigns the IP
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* address, the connected P2P device information ({@link WifiP2pGroup#getClientList()}) in the
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* group is updated with the IP address and broadcast the group information using
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* {@link WifiP2pManager#EXTRA_WIFI_P2P_GROUP} extra of the
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* {@link WifiP2pManager#WIFI_P2P_CONNECTION_CHANGED_ACTION} broadcast intent.
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*
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* Alternatively, the application can request for the group details with
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* {@link WifiP2pManager#requestGroupInfo} and use ({@link WifiP2pGroup#getClientList()}) to
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* obtain the connected client details.
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*
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* @return the IP address if the device is a part of the group; otherwise null.
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*/
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@FlaggedApi(Flags.FLAG_ANDROID_V_WIFI_API)
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@Nullable public InetAddress getIpAddress() {
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return mIpAddress;
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}
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/**
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* Set the IP address of the device.
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* @hide
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*/
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public void setIpAddress(InetAddress ipAddress) {
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mIpAddress = ipAddress;
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}
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@Override
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public boolean equals(Object obj) {
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if (this == obj) return true;
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if (!(obj instanceof WifiP2pDevice)) return false;
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WifiP2pDevice other = (WifiP2pDevice) obj;
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if (other == null || other.deviceAddress == null) {
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return (deviceAddress == null);
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}
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return other.deviceAddress.equals(deviceAddress);
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}
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@Override
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public int hashCode() {
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return Objects.hashCode(deviceAddress);
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}
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@Override
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public String toString() {
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StringBuffer sbuf = new StringBuffer();
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sbuf.append("Device: ").append(deviceName);
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sbuf.append("\n deviceAddress: ").append(deviceAddress);
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sbuf.append("\n interfaceMacAddress: ")
|
|
.append(mInterfaceMacAddress == null ? "none" : mInterfaceMacAddress.toString());
|
|
sbuf.append("\n ipAddress: ")
|
|
.append(mIpAddress == null ? "none" : mIpAddress.getHostAddress());
|
|
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);
|
|
sbuf.append("\n vendorElements: ").append(mVendorElements);
|
|
sbuf.append("\n vendorData: ").append(mVendorData);
|
|
return sbuf.toString();
|
|
}
|
|
|
|
/** Implement the Parcelable interface */
|
|
@Override
|
|
public int describeContents() {
|
|
return 0;
|
|
}
|
|
|
|
/** copy constructor */
|
|
public WifiP2pDevice(WifiP2pDevice source) {
|
|
if (source != null) {
|
|
deviceName = source.deviceName;
|
|
deviceAddress = source.deviceAddress;
|
|
mInterfaceMacAddress = source.mInterfaceMacAddress;
|
|
mIpAddress = source.mIpAddress;
|
|
primaryDeviceType = source.primaryDeviceType;
|
|
secondaryDeviceType = source.secondaryDeviceType;
|
|
wpsConfigMethodsSupported = source.wpsConfigMethodsSupported;
|
|
deviceCapability = source.deviceCapability;
|
|
groupCapability = source.groupCapability;
|
|
status = source.status;
|
|
if (source.wfdInfo != null) {
|
|
wfdInfo = new WifiP2pWfdInfo(source.wfdInfo);
|
|
}
|
|
if (null != source.mVendorElements) {
|
|
mVendorElements = new ArrayList<>(source.mVendorElements);
|
|
}
|
|
mVendorData = new ArrayList<>(source.mVendorData);
|
|
}
|
|
}
|
|
|
|
/** Implement the Parcelable interface */
|
|
@Override
|
|
public void writeToParcel(Parcel dest, int flags) {
|
|
dest.writeString(deviceName);
|
|
dest.writeString(deviceAddress);
|
|
dest.writeParcelable(mInterfaceMacAddress, flags);
|
|
if (mIpAddress != null) {
|
|
dest.writeByte((byte) 1);
|
|
dest.writeByteArray(mIpAddress.getAddress());
|
|
} else {
|
|
dest.writeByte((byte) 0);
|
|
}
|
|
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);
|
|
}
|
|
dest.writeTypedList(mVendorElements);
|
|
dest.writeList(mVendorData);
|
|
}
|
|
|
|
/** Implement the Parcelable interface */
|
|
public static final @android.annotation.NonNull Creator<WifiP2pDevice> CREATOR =
|
|
new Creator<WifiP2pDevice>() {
|
|
@Override
|
|
public WifiP2pDevice createFromParcel(Parcel in) {
|
|
WifiP2pDevice device = new WifiP2pDevice();
|
|
device.deviceName = in.readString();
|
|
device.deviceAddress = in.readString();
|
|
device.mInterfaceMacAddress = in.readParcelable(MacAddress.class.getClassLoader());
|
|
if (in.readByte() == 1) {
|
|
try {
|
|
device.mIpAddress = InetAddress.getByAddress(in.createByteArray());
|
|
} catch (UnknownHostException e) {
|
|
e.printStackTrace();
|
|
return new WifiP2pDevice();
|
|
}
|
|
}
|
|
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);
|
|
}
|
|
device.mVendorElements = in.createTypedArrayList(
|
|
ScanResult.InformationElement.CREATOR);
|
|
device.mVendorData = ParcelUtil.readOuiKeyedDataList(in);
|
|
return device;
|
|
}
|
|
|
|
@Override
|
|
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;
|
|
}
|
|
}
|