连接过来的设备的信息存放
1、连接过来的设备的信息存放在/data/misc/dhcp/dnsmasq.leases中
2、它的格式是:
/系统id,不需取值/client mac地址/client ip地址/ client device name/加权后mac地址,也不需取值
2、参考WifiServie.java的getClientIp()方法,可以自定义这个方法取得device name,具体如下:
enforceAccessPermission();
if(TextUtils.isEmpty(deviceAddress)) {
return null;
}
//读取对应的文件信息
for (String s :readClientList("/data/misc/dhcp/dnsmasq.leases")) {
if(s.indexOf(deviceAddress) != -1) {
String[] fields =s.split(" ");
//校验数据是否破损
if (fields.length> 4) {
//返回第4个栏位
return fields[3];
}
}
}
return null;
}
3 在文件中的位置
Tethering.java(\\192.168.113.219\android\external2\android\lixy\1118-am809-sdk\809_apsdk_n\frameworks\base\services\core\java\com\android\server\connectivity)
private staticfinal String dhcpLocation = "/data/misc/dhcp/dnsmasq.leases";
readDeviceInfoFromDnsmasq()方法里面读出了文件里面的IP和物理地址
private booleanreadDeviceInfoFromDnsmasq(WifiDevice device) {
boolean result = false;
FileInputStream fstream = null;
String line;
try {
fstream = newFileInputStream(dhcpLocation);
DataInputStream in = newDataInputStream(fstream);
BufferedReader br = new BufferedReader(newInputStreamReader(in));
while ((null != (line = br.readLine()))&& (line.length() != 0)) {
String[] fields =line.split(" ");
// 949295 00:0a:f5:6a:bf:70192.168.43.32 android-93de88df9ec61bac *
if (fields.length > 3) {
String addr = fields[1];
String name = fields[3];
System.out.println("LT-----addr="+addr+"name="+name);
if(addr.equals(device.deviceAddress)) {
device.deviceName =name;
result = true;
break;
}
}
}
} catch (IOException ex) {
Log.e(TAG,"readDeviceNameFromDnsmasq: " + ex);
} finally {
if (fstream != null) {
try {
fstream.close();
} catch (IOException ex) {}
}
}
return result;
}