NAME
wpa_cli - WPA command line client
SYNOPSIS
wpa_cli [ -p path to ctrl sockets ] [ -i ifname ] [ -hvB ] [ -a action
file ] [ -P pid file ] [ command ... ]
OVERVIEW
wpa_cli is a text-based frontend program for interacting with
wpa_supplicant. It is used to query current status, change
configuration, trigger events, and request interactive user input.
wpa_cli can show the current authentication status, selected security
mode, dot11 and dot1x MIBs, etc. In addition, it can configure some
variables like EAPOL state machine parameters and trigger events like
reassociation and IEEE 802.1X logoff/logon. wpa_cli provides a user
interface to request authentication information, like username and
password, if these are not included in the configuration. This can be
used to implement, e.g., one-time-passwords or generic token card
authentication where the authentication is based on a challenge-
response that uses an external device for generating the response.
The control interface of wpa_supplicant can be configured to allow non-
root user access (ctrl_interface GROUP= parameter in the configuration
file). This makes it possible to run wpa_cli with a normal user
account.
wpa_cli supports two modes: interactive and command line. Both modes
share the same command set and the main difference is in interactive
mode providing access to unsolicited messages (event messages,
username/password requests).
Interactive mode is started when wpa_cli is executed without including
the command as a command line parameter. Commands are then entered on
the wpa_cli prompt. In command line mode, the same commands are entered
as command line arguments for wpa_cli.
INTERACTIVE AUTHENTICATION PARAMETERS REQUEST
When wpa_supplicant need authentication parameters, like username and
password, which are not present in the configuration file, it sends a
request message to all attached frontend programs, e.g., wpa_cli in
interactive mode. wpa_cli shows these requests with "CTRL-
REQ-<type>-<id>:<text>" prefix. <type> is IDENTITY, PASSWORD, or OTP
(one-time-password). <id> is a unique identifier for the current
network. <text> is description of the request. In case of OTP request,
it includes the challenge from the authentication server.
The reply to these requests can be given with identity, password, and
otp commands. <id> needs to be copied from the matching request.
password and otp commands can be used regardless of whether the request
was for PASSWORD or OTP. The main difference between these two commands
is that values given with password are remembered as long as
wpa_supplicant is running whereas values given with otp are used only
once and then forgotten, i.e., wpa_supplicant will ask frontend for a
new value for every use. This can be used to implement one-time-
password lists and generic token card -based authentication.
Example request for password and a matching reply:
CTRL-REQ-PASSWORD-1:Password needed for SSID foobar
> password 1 mysecretpassword
Example request for generic token card challenge-response:
CTRL-REQ-OTP-2:Challenge 1235663 needed for SSID foobar
> otp 2 9876
COMMAND ARGUMENTS
-p path
Change the path where control sockets should be found.
-i ifname
Specify the interface that is being configured. By default,
choose the first interface found with a control socket in the
socket path.
-h Help. Show a usage message.
-v Show version information.
-B Run as a daemon in the background.
-a file
Run in daemon mode executing the action file based on events
from wpa_supplicant. The specified file will be executed with
the first argument set to interface name and second to
"CONNECTED" or "DISCONNECTED" depending on the event. This can
be used to execute networking tools required to configure the
interface.
Additionally, three environmental variables are available to the
file: WPA_CTRL_DIR, WPA_ID, and WPA_ID_STR. WPA_CTRL_DIR
contains the absolute path to the ctrl_interface socket. WPA_ID
contains the unique network_id identifier assigned to the active
network, and WPA_ID_STR contains the content of the id_str
option.
-P file
Set the location of the PID file.
command
Run a command. The available commands are listed in the next
section.
COMMANDS
The following commands are available:
status get current WPA/EAPOL/EAP status
mib get MIB variables (dot1x, dot11)
help show this usage help
interface [ifname]
show interfaces/select interface
level <debug level>
change debug level
license
show full wpa_cli license
logoff IEEE 802.1X EAPOL state machine logoff
logon IEEE 802.1X EAPOL state machine logon
set set variables (shows list of variables when run without
arguments)
pmksa show PMKSA cache
reassociate
force reassociation
reconfigure
force wpa_supplicant to re-read its configuration file
preauthenticate <BSSID>
force preauthentication
identity <network id> <identity>
configure identity for an SSID
password <network id> <password>
configure password for an SSID
pin <network id> <pin>
configure pin for an SSID
otp <network id> <password>
configure one-time-password for an SSID
bssid <network id> <BSSID>
set preferred BSSID for an SSID
list_networks
list configured networks
terminate
terminate wpa_supplicant
quit exit wpa_cli
SEE ALSO
wpa_supplicant(8)
LEGAL
wpa_supplicant is copyright (c) 2003-2007, Jouni Malinen <j@w1.fi> and
contributors. All Rights Reserved.
This program is dual-licensed under both the GPL version 2 and BSD
license. Either license may be used at your option.
12 January 2010