krackattacks/wpa_supplicant/doc/docbook/wpa_cli.sgml

<!doctype refentry PUBLIC "-//OASIS//DTD DocBook V4.1//EN">

<refentry>
  <refmeta>
    <refentrytitle>wpa_cli</refentrytitle>
    <manvolnum>8</manvolnum>
  </refmeta>
  <refnamediv>
    <refname>wpa_cli</refname>

    <refpurpose>WPA command line client</refpurpose>
  </refnamediv>

  <refsynopsisdiv>
    <cmdsynopsis>
      <command>wpa_cli</command>
      <arg>-p <replaceable>path to ctrl sockets</replaceable></arg>
      <arg>-i <replaceable>ifname</replaceable></arg>
      <arg>-hvB</arg>
      <arg>-a <replaceable>action file</replaceable></arg>
      <arg>-P <replaceable>pid file</replaceable></arg>
      <arg><replaceable>command ...</replaceable></arg>
    </cmdsynopsis>
  </refsynopsisdiv>

  <refsect1>
    <title>Overview</title>

    <para>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.</para>

    <para>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.</para>

    <para>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.</para>

    <para>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).</para>

    <para>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.</para>
 </refsect1>
 <refsect1>
   <title>Interactive authentication parameters request</title>

   <para>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-&lt;type&gt;-&lt;id&gt;:&lt;text&gt;"
   prefix. &lt;type&gt; is IDENTITY, PASSWORD, or OTP
   (one-time-password). &lt;id&gt; is a unique identifier for the
   current network. &lt;text&gt; is description of the request. In
   case of OTP request, it includes the challenge from the
   authentication server.</para>

    <para>The reply to these requests can be given with 'identity',
    'password', and 'otp' commands. &lt;id&gt; needs to be copied from the
    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.</para>

    <para>Example request for password and a matching reply:</para>

<blockquote><programlisting>
CTRL-REQ-PASSWORD-1:Password needed for SSID foobar
> password 1 mysecretpassword
</programlisting></blockquote>

    <para>Example request for generic token card challenge-response:</para>

<blockquote><programlisting>
CTRL-REQ-OTP-2:Challenge 1235663 needed for SSID foobar
> otp 2 9876
</programlisting></blockquote>

  </refsect1>
  <refsect1>
    <title>Command Arguments</title>
    <variablelist>
      <varlistentry>
	<term>-p path</term>

	<listitem><para>Change the path where control sockets should
	be found.</para></listitem>
      </varlistentry>

      <varlistentry>
	<term>-i ifname</term>

        <listitem><para>Specify the interface that is being
	configured.  By default, choose the first interface found with
	a control socket in the socket path.</para></listitem>
      </varlistentry>

      <varlistentry>
	<term>-h</term>
	<listitem><para>Help.  Show a usage message.</para></listitem>
      </varlistentry>


      <varlistentry>
	<term>-v</term>
	<listitem><para>Show version information.</para></listitem>
      </varlistentry>


      <varlistentry>
	<term>-B</term>
	<listitem><para>Run as a daemon in the background.</para></listitem>
      </varlistentry>

      <varlistentry>
	<term>-a file</term>

	<listitem><para>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.</para>

	<para>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.
	</para></listitem>
      </varlistentry>

      <varlistentry>
	<term>-P file</term>

	<listitem><para>Set the location of the PID
	file.</para></listitem>
      </varlistentry>

      <varlistentry>
	<term>command</term>

	<listitem><para>Run a command.  The available commands are
	listed in the next section.</para></listitem>

      </varlistentry>
    </variablelist>
  </refsect1>
  <refsect1>
    <title>Commands</title>
    <para>The following commands are available:</para>

    <variablelist>
      <varlistentry>
	<term>status</term>
	<listitem>
	  <para>get current WPA/EAPOL/EAP status</para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>mib</term>
	<listitem>
	  <para>get MIB variables (dot1x, dot11)</para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>help</term>
	<listitem>
	  <para>show this usage help</para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>interface [ifname]</term>
	<listitem>
	  <para>show interfaces/select interface</para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>level &lt;debug level&gt;</term>
	<listitem>
	  <para>change debug level</para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>license</term>
	<listitem>
	  <para>show full wpa_cli license</para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>logoff</term>
	<listitem>
	  <para>IEEE 802.1X EAPOL state machine logoff</para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>logon</term>
	<listitem>
	  <para>IEEE 802.1X EAPOL state machine logon</para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>set</term>
	<listitem>
	  <para>set variables (shows list of variables when run without arguments)</para>
	</listitem>
      </varlistentry>
      <varlistentry>
	<term>pmksa</term>
	<listitem>
	  <para>show PMKSA cache</para>
	</listitem>
      </varlistentry>
      <varlistentry>
	<term>reassociate</term>
	<listitem>
	  <para>force reassociation</para>
	</listitem>
      </varlistentry>
      <varlistentry>
	<term>reconfigure</term>
	<listitem>
	  <para>force wpa_supplicant to re-read its configuration file</para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>preauthenticate &lt;BSSID&gt;</term>
	<listitem>
	  <para>force preauthentication</para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>identity &lt;network id&gt; &lt;identity&gt;</term>
	<listitem>
	  <para>configure identity for an SSID</para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>password &lt;network id&gt; &lt;password&gt;</term>
	<listitem>
	  <para>configure password for an SSID</para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>pin &lt;network id&gt; &lt;pin&gt;</term>
	<listitem>
	  <para>configure pin for an SSID</para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>otp &lt;network id&gt; &lt;password&gt;</term>
	<listitem>
	  <para>configure one-time-password for an SSID</para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>bssid &lt;network id&gt; &lt;BSSID&gt;</term>
	<listitem>
	  <para>set preferred BSSID for an SSID</para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>list_networks</term>
	<listitem>
	  <para>list configured networks</para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>terminate</term>
	<listitem>
	  <para>terminate <command>wpa_supplicant</command></para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>quit</term>
	<listitem><para>exit wpa_cli</para></listitem>
      </varlistentry>
    </variablelist>
  </refsect1>
  <refsect1>
    <title>See Also</title>
    <para>
      <citerefentry>
	<refentrytitle>wpa_supplicant</refentrytitle>
	<manvolnum>8</manvolnum>
      </citerefentry>
    </para>
  </refsect1>
  <refsect1>
    <title>Legal</title>
    <para>wpa_supplicant is copyright (c) 2003-2007,
    Jouni Malinen <email>j@w1.fi</email> and
    contributors.
    All Rights Reserved.</para>

    <para>This program is dual-licensed under both the GPL version 2
    and BSD license. Either license may be used at your option.</para>
  </refsect1>
</refentry>