Get Wifi Interface name on Android

Question

I am currently developing a sort of wifi sniffer. To achieve that I use a tcpdump binary compiled for arm. But it\'s assume that I know the name of the Wifi Interface.

Answer 1

You can call /system/ip link and parse the results.

bash-3.2# ip link
ip link
1: lo:  mtu 16436 qdisc noqueue state UNKNOWN
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: usb0:  mtu 1500 qdisc noop state DOWN qlen 1000
    link/ether 6e:3d:7a:3a:62:ee brd ff:ff:ff:ff:ff:ff
3: usb1:  mtu 1500 qdisc noop state DOWN qlen 1000
    link/ether da:bb:3f:04:1b:cd brd ff:ff:ff:ff:ff:ff
4: sit0:  mtu 1480 qdisc noop state DOWN
    link/sit 0.0.0.0 brd 0.0.0.0
5: ip6tnl0:  mtu 1460 qdisc noop state DOWN
    link/tunnel6 :: brd ::
6: ifb0:  mtu 1500 qdisc noop state DOWN qlen 32
    link/ether 76:3c:4e:23:cc:f8 brd ff:ff:ff:ff:ff:ff
7: ifb1:  mtu 1500 qdisc noop state DOWN qlen 32
    link/ether 02:17:54:31:ff:bd brd ff:ff:ff:ff:ff:ff
8: tun:  mtu 1500 qdisc noop state DOWN qlen 500
    link/ether b2:b7:11:da:7c:6a brd ff:ff:ff:ff:ff:ff
16: tiwlan0:  mtu 1500 qdisc pfifo_fast state UP qlen 100
    link/ether 40:fc:89:e4:67:4c brd ff:ff:ff:ff:ff:ff