wpa_cli_with_wpa_supplicant.pdf

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This document had described the way to inform the wpa_supplicant to do the

WiFi connection by using the wpa_cli. The wpa_supplicant had supported all

kinds of security connections and WPS defined in the 802.11 specification. So,

we suggest use the wpa_supplicant to do the WiFi connection rather than the

iwconfig wireless tool.

(A) WPA_SUPPLICANT + WPA_CLI User Guide

1.start wpa_supplicant in the background

wpa_supplicant –Dnl80211 -iwlan0 -c /tmp/net/wpa.conf –B

wpa_supplicant -Dwext -iwlan0 -c /tmp/net/wpa.conf -B

2.Scaning AP and See Results

wpa_cli -p/var/run/wpa_supplicant scan

wpa_cli -p/var/run/wpa_supplicant scan_results

3.Connect to AP

a.OPEN

wpa_cli -p/var/run/wpa_supplicant

b.WEP40 with open system

wpa_cli -p/var/run/wpa_supplicant

c.WEP40 with shared key mode

wpa_cli -p/var/run/wpa_supplicant

remove_network 0

ap_scan 1

add_network

set_network 0 ssid

'"dlink"'

set_network 0 key_mgmt NONE

select_network

remove_network 0

ap_scan 1

add_network

set_network 0 ssid '"dlink"'

set_network 0 key_mgmt NONE

set_network 0 wep_key0 1234567890

set_network 0 wep_tx_keyidx 0

select_network

remove_network 0

ap_scan 1

add_network

set_network 0 ssid '"dlink"'

set_network 0 key_mgmt NONE

set_network 0 wep_key0 1234567890

set_network 0 wep_tx_keyidx 0

wpa_cli –p/var/run/wpa_supplicant set_network 0 auth_alg SHARED

wpa_cli -p/var/run/wpa_supplicant

select_network

d.WEP104 with open system

wpa_cli -p/var/run/wpa_supplicant

12345678901234567890123456

wpa_cli -p/var/run/wpa_supplicant

remove_network 0

ap_scan 1

add_network

set_network 0 ssid '"dlink"'

set_network 0 key_mgmt NONE

set_network 0 wep_key0

set_network 0 wep_tx_keyidx 0

select_network

e.WEP104 with shared key mode

wpa_cli -p/var/run/wpa_supplicant remove_network 0

wpa_cli -p/var/run/wpa_supplicant ap_scan 1

wpa_cli -p/var/run/wpa_supplicant add_network

wpa_cli -p/var/run/wpa_supplicant set_network 0 ssid '"dlink"'

wpa_cli -p/var/run/wpa_supplicant set_network 0 key_mgmt NONE

wpa_cli -p/var/run/wpa_supplicant set_network 0 wep_key0

12345678901234567890123456

wpa_cli -p/var/run/wpa_supplicant set_network 0 wep_tx_keyidx 0

wpa_cli –p/var/run/wpa_supplicant set_network 0 auth_alg SHARED

wpa_cli -p/var/run/wpa_supplicant

select_network

#If wep key is ASCII type,use the following cmd:

#WEP40: wpa_cli -p/var/run/wpa_supplicant set_network 0 wep_key0

'"12345"'

#WEP104: wpa_cli -p/var/run/wpa_supplicant set_network 0 wep_key0

'"1234567890123"'

#WEP key index is X from 0 to 3, change X for other key index and select it.

#wpa_cli -p/var/run/wpa_supplicant set_network 0 wep_keyX

12345678901234567890123456

#wpa_cli -p/var/run/wpa_supplicant set_network 0 wep_tx_keyidx X

f.TKIP and AES

wpa_cli -p/var/run/wpa_supplicant

remove_network 0

ap_scan 1

add_network

set_network 0 ssid '"dlink"'

set_network 0 key_mgmt WPA-PSK

set_network 0 psk '"12345678"'

select_network

4.Ad-hoc mode

a.OPEN

wpa_cli -p/var/run/wpa_supplicant

scan

scan_results

remove_network 0

ap_scan 2

add_network

set_network 0 ssid '"Adhoc_test"'

set_network 0 mode 1

set_network 0 key_mgmt NONE

set_network 0

frequency

2412

select_network

#frequency is to set the channel frequency for Ad-hoc master.

b.WEP40

wpa_cli -p/var/run/wpa_supplicant

scan

scan_results

remove_network 0

ap_scan 2

add_network

set_network 0 ssid '"Adhoc_test"'

set_network 0 mode 1

set_network 0 key_mgmt NONE

set_network 0 wep_key0 1234567890

set_network 0 wep_tx_keyidx 0

set_network 0

frequency

2412

select_network

c.WEP104

wpa_cli -p/var/run/wpa_supplicant scan

wpa_cli -p/var/run/wpa_supplicant scan_results

wpa_cli -p/var/run/wpa_supplicant remove_network 0

wpa_cli -p/var/run/wpa_supplicant ap_scan 2

wpa_cli -p/var/run/wpa_supplicant add_network

wpa_cli -p/var/run/wpa_supplicant set_network 0 ssid '"Adhoc_test"'

wpa_cli -p/var/run/wpa_supplicant set_network 0 mode 1

wpa_cli -p/var/run/wpa_supplicant set_network 0 key_mgmt NONE

wpa_cli -p/var/run/wpa_supplicant set_network 0 wep_key0

12345678901234567890123456

wpa_cli -p/var/run/wpa_supplicant set_network 0 wep_tx_keyidx 0

wpa_cli -p/var/run/wpa_supplicant set_network 0

frequency

2412

wpa_cli -p/var/run/wpa_supplicant

select_network

5.Save the Current Connection AP configuration file

wpa_cli -p/var/run/wpa_supplicant save_config

6.WPS Connection

Push Button:

wpa_cli -p/var/run/wpa_supplicant

Pin Code:

wpa_cli -p/var/run/wpa_supplicant

remove_network 0

wps_pbc any

remove_network 0

wps_pin any 12345670

remove_network 0

wps_pin any

7.Get Current Status of wpa_supplicant

wpa_cli -p/var/run/wpa_supplicant status

8.Disable current network connection

wpa_cli -p/var/run/wpa_supplicant disable_network 0

(B) WPA_SUPPLICANT + WPA_CLI - Control interface commands

Following commands can be used with

wpa_cli

PING

This command can be used to test whether wpa_supplicant is replying to the control interface commands.

The expected reply is PONG if the connection is open and wpa_supplicant is processing commands.

STATUS

Request current status information. The output is a text block with each line in

variable=value format. For example:

bssid=02:00:01:02:03:04

ssid=test network

pairwise_cipher=CCMP

group_cipher=CCMP

key_mgmt=WPA-PSK

wpa_state=COMPLETED

LIST_NETWORKS

List configured networks.

network id / ssid / bssid / flags

0 example network any [CURRENT]

(note: fields are separated with tabs)

SCAN

Request a new BSS scan.

SCAN_RESULTS

Get the latest scan results.

bssid / frequency / signal level / flags / ssid

00:09:5b:95:e0:4e 2412 208 [WPA-PSK-CCMP] jkm private

02:55:24:33:77:a3 2462 187 [WPA-PSK-TKIP] testing

00:09:5b:95:e0:4f 2412 209 jkm guest

(note: fields are separated with tabs)

ADD_NETWORK

Add a new network. This command creates a new network with empty configuration. The new network is

disabled and once it has been configured it can be enabled with ENABLE_NETWORK command. ADD_-

NETWORK returns the

network id

of the new network or FAIL on failure

SELECT_NETWORK

Select a network (disable others). Network id can be received from the LIST_NETWORKS command

output.

ENABLE_NETWORK

Enable a network. Network id can be received from the LIST_NETWORKS command output.

DISABLE_NETWORK

Disable a network. Network id can be received from the LIST_NETWORKS command output. Special

network id

all

can be used to disable all network.

REMOVE_NETWORK

Remove a network. Network id can be received from the LIST_NETWORKS command output. Special

network id

all

can be used to remove all network.

SET_NETWORK

<value>

Set network variables. Network id can be received from the LIST_NETWORKS command output.

This command uses the same variables and data formats as the configuration file.

• ssid (network name, SSID)

• psk (WPA passphrase or pre-shared key)

• key_mgmt (key management protocol, NONE, WPA-PSK, WPA-EAP)

• proto ( WPA WPA2)

• pairwise ( CCMP TKIP)

• group ( CCMP TKIP WEP40 WEP104)

• wep_key0 ( set wep key for key index 0)

• wep_tx_keyidx ( select wep key index)

• frequency ( Channel frequency in megahertz (MHz) for IBSS )

GET_NETWORK

Get network variables. Network id can be received from the LIST_NETWORKS command output.

SAVE_CONFIG

Save the current configuration.

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