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 17 package android.net.wifi.p2p; 18 19 import android.os.Parcelable; 20 import android.os.Parcel; 21 import android.util.Log; 22 23 import java.util.regex.Pattern; 24 import java.util.regex.Matcher; 25 26 /** 27 * A class representing a Wi-Fi p2p device 28 * 29 * Note that the operations are not thread safe 30 * {@see WifiP2pManager} 31 */ 32 public class WifiP2pDevice implements Parcelable { 33 34 private static final String TAG = "WifiP2pDevice"; 35 36 /** 37 * The device name is a user friendly string to identify a Wi-Fi p2p device 38 */ 39 public String deviceName = ""; 40 41 /** 42 * The device MAC address uniquely identifies a Wi-Fi p2p device 43 */ 44 public String deviceAddress = ""; 45 46 /** 47 * Primary device type identifies the type of device. For example, an application 48 * could filter the devices discovered to only display printers if the purpose is to 49 * enable a printing action from the user. See the Wi-Fi Direct technical specification 50 * for the full list of standard device types supported. 51 */ 52 public String primaryDeviceType; 53 54 /** 55 * Secondary device type is an optional attribute that can be provided by a device in 56 * addition to the primary device type. 57 */ 58 public String secondaryDeviceType; 59 60 61 // These definitions match the ones in wpa_supplicant 62 /* WPS config methods supported */ 63 private static final int WPS_CONFIG_DISPLAY = 0x0008; 64 private static final int WPS_CONFIG_PUSHBUTTON = 0x0080; 65 private static final int WPS_CONFIG_KEYPAD = 0x0100; 66 67 /* Device Capability bitmap */ 68 private static final int DEVICE_CAPAB_SERVICE_DISCOVERY = 1; 69 private static final int DEVICE_CAPAB_CLIENT_DISCOVERABILITY = 1<<1; 70 private static final int DEVICE_CAPAB_CONCURRENT_OPER = 1<<2; 71 private static final int DEVICE_CAPAB_INFRA_MANAGED = 1<<3; 72 private static final int DEVICE_CAPAB_DEVICE_LIMIT = 1<<4; 73 private static final int DEVICE_CAPAB_INVITATION_PROCEDURE = 1<<5; 74 75 /* Group Capability bitmap */ 76 private static final int GROUP_CAPAB_GROUP_OWNER = 1; 77 private static final int GROUP_CAPAB_PERSISTENT_GROUP = 1<<1; 78 private static final int GROUP_CAPAB_GROUP_LIMIT = 1<<2; 79 private static final int GROUP_CAPAB_INTRA_BSS_DIST = 1<<3; 80 private static final int GROUP_CAPAB_CROSS_CONN = 1<<4; 81 private static final int GROUP_CAPAB_PERSISTENT_RECONN = 1<<5; 82 private static final int GROUP_CAPAB_GROUP_FORMATION = 1<<6; 83 84 /** 85 * WPS config methods supported 86 * @hide 87 */ 88 public int wpsConfigMethodsSupported; 89 90 /** 91 * Device capability 92 * @hide 93 */ 94 public int deviceCapability; 95 96 /** 97 * Group capability 98 * @hide 99 */ 100 public int groupCapability; 101 102 public static final int CONNECTED = 0; 103 public static final int INVITED = 1; 104 public static final int FAILED = 2; 105 public static final int AVAILABLE = 3; 106 public static final int UNAVAILABLE = 4; 107 108 /** Device connection status */ 109 public int status = UNAVAILABLE; 110 111 /** @hide */ 112 public WifiP2pWfdInfo wfdInfo; 113 114 /** Detailed device string pattern with WFD info 115 * Example: 116 * P2P-DEVICE-FOUND 00:18:6b:de:a3:6e p2p_dev_addr=00:18:6b:de:a3:6e 117 * pri_dev_type=1-0050F204-1 name='DWD-300-DEA36E' config_methods=0x188 118 * dev_capab=0x21 group_capab=0x9 119 */ 120 private static final Pattern detailedDevicePattern = Pattern.compile( 121 "((?:[0-9a-f]{2}:){5}[0-9a-f]{2}) " + 122 "(\\d+ )?" + 123 "p2p_dev_addr=((?:[0-9a-f]{2}:){5}[0-9a-f]{2}) " + 124 "pri_dev_type=(\\d+-[0-9a-fA-F]+-\\d+) " + 125 "name='(.*)' " + 126 "config_methods=(0x[0-9a-fA-F]+) " + 127 "dev_capab=(0x[0-9a-fA-F]+) " + 128 "group_capab=(0x[0-9a-fA-F]+)" + 129 "( wfd_dev_info=0x000006([0-9a-fA-F]{12}))?" 130 ); 131 132 /** 2 token device address pattern 133 * Example: 134 * P2P-DEVICE-LOST p2p_dev_addr=fa:7b:7a:42:02:13 135 * AP-STA-DISCONNECTED 42:fc:89:a8:96:09 136 */ 137 private static final Pattern twoTokenPattern = Pattern.compile( 138 "(p2p_dev_addr=)?((?:[0-9a-f]{2}:){5}[0-9a-f]{2})" 139 ); 140 141 /** 3 token device address pattern 142 * Example: 143 * AP-STA-CONNECTED 42:fc:89:a8:96:09 p2p_dev_addr=fa:7b:7a:42:02:13 144 * AP-STA-DISCONNECTED 42:fc:89:a8:96:09 p2p_dev_addr=fa:7b:7a:42:02:13 145 */ 146 private static final Pattern threeTokenPattern = Pattern.compile( 147 "(?:[0-9a-f]{2}:){5}[0-9a-f]{2} p2p_dev_addr=((?:[0-9a-f]{2}:){5}[0-9a-f]{2})" 148 ); 149 150 151 public WifiP2pDevice() { 152 } 153 154 /** 155 * @param string formats supported include 156 * P2P-DEVICE-FOUND fa:7b:7a:42:02:13 p2p_dev_addr=fa:7b:7a:42:02:13 157 * pri_dev_type=1-0050F204-1 name='p2p-TEST1' config_methods=0x188 dev_capab=0x27 158 * group_capab=0x0 wfd_dev_info=000006015d022a0032 159 * 160 * P2P-DEVICE-LOST p2p_dev_addr=fa:7b:7a:42:02:13 161 * 162 * AP-STA-CONNECTED 42:fc:89:a8:96:09 [p2p_dev_addr=02:90:4c:a0:92:54] 163 * 164 * AP-STA-DISCONNECTED 42:fc:89:a8:96:09 [p2p_dev_addr=02:90:4c:a0:92:54] 165 * 166 * fa:7b:7a:42:02:13 167 * 168 * Note: The events formats can be looked up in the wpa_supplicant code 169 * @hide 170 */ 171 public WifiP2pDevice(String string) throws IllegalArgumentException { 172 String[] tokens = string.split("[ \n]"); 173 Matcher match; 174 175 if (tokens.length < 1) { 176 throw new IllegalArgumentException("Malformed supplicant event"); 177 } 178 179 switch (tokens.length) { 180 case 1: 181 /* Just a device address */ 182 deviceAddress = string; 183 return; 184 case 2: 185 match = twoTokenPattern.matcher(string); 186 if (!match.find()) { 187 throw new IllegalArgumentException("Malformed supplicant event"); 188 } 189 deviceAddress = match.group(2); 190 return; 191 case 3: 192 match = threeTokenPattern.matcher(string); 193 if (!match.find()) { 194 throw new IllegalArgumentException("Malformed supplicant event"); 195 } 196 deviceAddress = match.group(1); 197 return; 198 default: 199 match = detailedDevicePattern.matcher(string); 200 if (!match.find()) { 201 throw new IllegalArgumentException("Malformed supplicant event"); 202 } 203 204 deviceAddress = match.group(3); 205 primaryDeviceType = match.group(4); 206 deviceName = match.group(5); 207 wpsConfigMethodsSupported = parseHex(match.group(6)); 208 deviceCapability = parseHex(match.group(7)); 209 groupCapability = parseHex(match.group(8)); 210 if (match.group(9) != null) { 211 String str = match.group(10); 212 wfdInfo = new WifiP2pWfdInfo(parseHex(str.substring(0,4)), 213 parseHex(str.substring(4,8)), 214 parseHex(str.substring(8,12))); 215 } 216 break; 217 } 218 219 if (tokens[0].startsWith("P2P-DEVICE-FOUND")) { 220 status = AVAILABLE; 221 } 222 } 223 224 /** Returns true if WPS push button configuration is supported */ 225 public boolean wpsPbcSupported() { 226 return (wpsConfigMethodsSupported & WPS_CONFIG_PUSHBUTTON) != 0; 227 } 228 229 /** Returns true if WPS keypad configuration is supported */ 230 public boolean wpsKeypadSupported() { 231 return (wpsConfigMethodsSupported & WPS_CONFIG_KEYPAD) != 0; 232 } 233 234 /** Returns true if WPS display configuration is supported */ 235 public boolean wpsDisplaySupported() { 236 return (wpsConfigMethodsSupported & WPS_CONFIG_DISPLAY) != 0; 237 } 238 239 /** Returns true if the device is capable of service discovery */ 240 public boolean isServiceDiscoveryCapable() { 241 return (deviceCapability & DEVICE_CAPAB_SERVICE_DISCOVERY) != 0; 242 } 243 244 /** Returns true if the device is capable of invitation {@hide}*/ 245 public boolean isInvitationCapable() { 246 return (deviceCapability & DEVICE_CAPAB_INVITATION_PROCEDURE) != 0; 247 } 248 249 /** Returns true if the device reaches the limit. {@hide}*/ 250 public boolean isDeviceLimit() { 251 return (deviceCapability & DEVICE_CAPAB_DEVICE_LIMIT) != 0; 252 } 253 254 /** Returns true if the device is a group owner */ 255 public boolean isGroupOwner() { 256 return (groupCapability & GROUP_CAPAB_GROUP_OWNER) != 0; 257 } 258 259 /** Returns true if the group reaches the limit. {@hide}*/ 260 public boolean isGroupLimit() { 261 return (groupCapability & GROUP_CAPAB_GROUP_LIMIT) != 0; 262 } 263 264 /** 265 * Update device details. This will be throw an exception if the device address 266 * does not match. 267 * @param device to be updated 268 * @throws IllegalArgumentException if the device is null or device address does not match 269 * @hide 270 */ 271 public void update(WifiP2pDevice device) { 272 updateSupplicantDetails(device); 273 status = device.status; 274 } 275 276 /** Updates details obtained from supplicant @hide */ 277 void updateSupplicantDetails(WifiP2pDevice device) { 278 if (device == null) { 279 throw new IllegalArgumentException("device is null"); 280 } 281 if (device.deviceAddress == null) { 282 throw new IllegalArgumentException("deviceAddress is null"); 283 } 284 if (!deviceAddress.equals(device.deviceAddress)) { 285 throw new IllegalArgumentException("deviceAddress does not match"); 286 } 287 deviceName = device.deviceName; 288 primaryDeviceType = device.primaryDeviceType; 289 secondaryDeviceType = device.secondaryDeviceType; 290 wpsConfigMethodsSupported = device.wpsConfigMethodsSupported; 291 deviceCapability = device.deviceCapability; 292 groupCapability = device.groupCapability; 293 wfdInfo = device.wfdInfo; 294 } 295 296 @Override 297 public boolean equals(Object obj) { 298 if (this == obj) return true; 299 if (!(obj instanceof WifiP2pDevice)) return false; 300 301 WifiP2pDevice other = (WifiP2pDevice) obj; 302 if (other == null || other.deviceAddress == null) { 303 return (deviceAddress == null); 304 } 305 return other.deviceAddress.equals(deviceAddress); 306 } 307 308 public String toString() { 309 StringBuffer sbuf = new StringBuffer(); 310 sbuf.append("Device: ").append(deviceName); 311 sbuf.append("\n deviceAddress: ").append(deviceAddress); 312 sbuf.append("\n primary type: ").append(primaryDeviceType); 313 sbuf.append("\n secondary type: ").append(secondaryDeviceType); 314 sbuf.append("\n wps: ").append(wpsConfigMethodsSupported); 315 sbuf.append("\n grpcapab: ").append(groupCapability); 316 sbuf.append("\n devcapab: ").append(deviceCapability); 317 sbuf.append("\n status: ").append(status); 318 sbuf.append("\n wfdInfo: ").append(wfdInfo); 319 return sbuf.toString(); 320 } 321 322 /** Implement the Parcelable interface */ 323 public int describeContents() { 324 return 0; 325 } 326 327 /** copy constructor */ 328 public WifiP2pDevice(WifiP2pDevice source) { 329 if (source != null) { 330 deviceName = source.deviceName; 331 deviceAddress = source.deviceAddress; 332 primaryDeviceType = source.primaryDeviceType; 333 secondaryDeviceType = source.secondaryDeviceType; 334 wpsConfigMethodsSupported = source.wpsConfigMethodsSupported; 335 deviceCapability = source.deviceCapability; 336 groupCapability = source.groupCapability; 337 status = source.status; 338 wfdInfo = new WifiP2pWfdInfo(source.wfdInfo); 339 } 340 } 341 342 /** Implement the Parcelable interface */ 343 public void writeToParcel(Parcel dest, int flags) { 344 dest.writeString(deviceName); 345 dest.writeString(deviceAddress); 346 dest.writeString(primaryDeviceType); 347 dest.writeString(secondaryDeviceType); 348 dest.writeInt(wpsConfigMethodsSupported); 349 dest.writeInt(deviceCapability); 350 dest.writeInt(groupCapability); 351 dest.writeInt(status); 352 if (wfdInfo != null) { 353 dest.writeInt(1); 354 wfdInfo.writeToParcel(dest, flags); 355 } else { 356 dest.writeInt(0); 357 } 358 } 359 360 /** Implement the Parcelable interface */ 361 public static final Creator<WifiP2pDevice> CREATOR = 362 new Creator<WifiP2pDevice>() { 363 public WifiP2pDevice createFromParcel(Parcel in) { 364 WifiP2pDevice device = new WifiP2pDevice(); 365 device.deviceName = in.readString(); 366 device.deviceAddress = in.readString(); 367 device.primaryDeviceType = in.readString(); 368 device.secondaryDeviceType = in.readString(); 369 device.wpsConfigMethodsSupported = in.readInt(); 370 device.deviceCapability = in.readInt(); 371 device.groupCapability = in.readInt(); 372 device.status = in.readInt(); 373 if (in.readInt() == 1) { 374 device.wfdInfo = WifiP2pWfdInfo.CREATOR.createFromParcel(in); 375 } 376 return device; 377 } 378 379 public WifiP2pDevice[] newArray(int size) { 380 return new WifiP2pDevice[size]; 381 } 382 }; 383 384 //supported formats: 0x1abc, 0X1abc, 1abc 385 private int parseHex(String hexString) { 386 int num = 0; 387 if (hexString.startsWith("0x") || hexString.startsWith("0X")) { 388 hexString = hexString.substring(2); 389 } 390 391 try { 392 num = Integer.parseInt(hexString, 16); 393 } catch(NumberFormatException e) { 394 Log.e(TAG, "Failed to parse hex string " + hexString); 395 } 396 return num; 397 } 398 } 399
