[PATCH] wpa_supplicant: Emit signal when the station is authorized or deauthorized

Chengyi Zhao chengyix.zhao at gmail.com
Mon Jun 10 03:25:57 EDT 2013


Hi Jouni, Dan,

Thank you very much for your expert advice.

In fact this patch can help third-party modules in real-time manage
stations information.

Could you tell me if I need to further improve this patch?

Best Regards,

Chengyi


2013/6/7 Chengyi Zhao <chengyix.zhao at gmail.com>:
> From: Chengyi Zhao <chengyix.zhao at gmail.com>
>
> Add "StaAuthorized" and "StaDeauthorized" D-Bus interface in AP mode.
> After enabling the AP mode of wpa_supplicant, the other process need to get
> the mac address and authorization status of every station, so wpa_supplicant
> emits signal when the station is authorized or deauthorized.
>
> Signed-hostap: Chengyi Zhao <chengyix.zhao at gmail.com>
> ---
>  doc/dbus.doxygen               |   20 +++++++++++
>  wpa_supplicant/dbus/dbus_new.c |   78 ++++++++++++++++++++++++++++++++++++++++
>  wpa_supplicant/dbus/dbus_new.h |   16 +++++++++
>  wpa_supplicant/notify.c        |   12 +++++++
>  4 files changed, 126 insertions(+)
>
> diff --git a/doc/dbus.doxygen b/doc/dbus.doxygen
> index 988f769..1fa7a3a 100644
> --- a/doc/dbus.doxygen
> +++ b/doc/dbus.doxygen
> @@ -533,6 +533,26 @@ fi.w1.wpa_supplicant1.CreateInterface.
>        </li>
>
>        <li>
> +       <h3>StaAuthorized ( s : mac )</h3>
> +       <p>A new station has been authorized to the interface.</p>
> +       <h4>Arguments</h4>
> +       <dl>
> +         <dt>s : mac</dt>
> +         <dd>A mac address which has been authorized.</dd>
> +       </dl>
> +      </li>
> +
> +      <li>
> +       <h3>StaDeauthorized ( s : mac )</h3>
> +       <p>A station has been deauthorized to the interface.</p>
> +       <h4>Arguments</h4>
> +       <dl>
> +         <dt>s : mac</dt>
> +         <dd>A mac address which has been deauthorized.</dd>
> +       </dl>
> +      </li>
> +
> +      <li>
>         <h3>PropertiesChanged ( a{sv} : properties )</h3>
>         <p>Some properties have changed.</p>
>         <h4>Arguments</h4>
> diff --git a/wpa_supplicant/dbus/dbus_new.c b/wpa_supplicant/dbus/dbus_new.c
> index e9bd51f..b335b72 100644
> --- a/wpa_supplicant/dbus/dbus_new.c
> +++ b/wpa_supplicant/dbus/dbus_new.c
> @@ -868,6 +868,72 @@ nomem:
>         dbus_message_unref(msg);
>  }
>
> +/**
> + * wpas_dbus_signal_sta - Send a station related event signal
> + * @wpa_s: %wpa_supplicant network interface data
> + * @sta: station mac address
> + * @sig_name: signal name - StaAuthorized or StaDeauthorized
> + *
> + * Notify listeners about event related with station
> + */
> +static void wpas_dbus_signal_sta(struct wpa_supplicant *wpa_s,
> +                                const u8 *sta, const char *sig_name)
> +{
> +       struct wpas_dbus_priv *iface;
> +       DBusMessage *msg;
> +       char sta_mac[WPAS_DBUS_OBJECT_PATH_MAX];
> +       char *dev_mac;
> +
> +       os_snprintf(sta_mac, WPAS_DBUS_OBJECT_PATH_MAX, MACSTR, MAC2STR(sta));
> +       dev_mac = sta_mac;
> +
> +       iface = wpa_s->global->dbus;
> +
> +       /* Do nothing if the control interface is not turned on */
> +       if (iface == NULL)
> +               return;
> +
> +       msg = dbus_message_new_signal(wpa_s->dbus_new_path,
> +                                     WPAS_DBUS_NEW_IFACE_INTERFACE, sig_name);
> +       if (msg == NULL)
> +               return;
> +
> +       if (dbus_message_append_args(msg, DBUS_TYPE_STRING, &dev_mac,
> +                                    DBUS_TYPE_INVALID))
> +               dbus_connection_send(iface->con, msg, NULL);
> +       else
> +               wpa_printf(MSG_ERROR, "dbus: Failed to construct signal");
> +       dbus_message_unref(msg);
> +
> +       wpa_printf(MSG_DEBUG, "dbus: station mac address '%s' '%s'",
> +                  sta_mac, sig_name);
> +}
> +
> +/**
> + * wpas_dbus_signal_sta_authorized - Send a authorized signal
> + * @wpa_s: %wpa_supplicant network interface data
> + * @sta: station mac address
> + *
> + * Notify listeners a new station has been authorized
> + */
> +void wpas_dbus_signal_sta_authorized(struct wpa_supplicant *wpa_s,
> +                                const u8 *sta)
> +{
> +       wpas_dbus_signal_sta(wpa_s, sta, "StaAuthorized");
> +}
> +
> +/**
> + * wpas_dbus_signal_sta_deauthorized - Send a deauthorized signal
> + * @wpa_s: %wpa_supplicant network interface data
> + * @sta: station mac address
> + *
> + * Notify listeners a station has been deauthorized
> + */
> +void wpas_dbus_signal_sta_deauthorized(struct wpa_supplicant *wpa_s,
> +                                  const u8 *sta)
> +{
> +       wpas_dbus_signal_sta(wpa_s, sta, "StaDeauthorized");
> +}
>
>  #ifdef CONFIG_P2P
>
> @@ -3017,6 +3083,18 @@ static const struct wpa_dbus_signal_desc wpas_dbus_interface_signals[] = {
>                   END_ARGS
>           }
>         },
> +       { "StaAuthorized", WPAS_DBUS_NEW_IFACE_INTERFACE,
> +         {
> +                 { "name", "s", ARG_OUT },
> +                 END_ARGS
> +         }
> +       },
> +       { "StaDeauthorized", WPAS_DBUS_NEW_IFACE_INTERFACE,
> +         {
> +                 { "name", "s", ARG_OUT },
> +                 END_ARGS
> +         }
> +       },
>         { NULL, NULL, { END_ARGS } }
>  };
>
> diff --git a/wpa_supplicant/dbus/dbus_new.h b/wpa_supplicant/dbus/dbus_new.h
> index 363a7e5..2a8e176 100644
> --- a/wpa_supplicant/dbus/dbus_new.h
> +++ b/wpa_supplicant/dbus/dbus_new.h
> @@ -222,6 +222,10 @@ void wpas_dbus_signal_preq(struct wpa_supplicant *wpa_s,
>                            const u8 *ie, size_t ie_len, u32 ssi_signal);
>  void wpas_dbus_signal_eap_status(struct wpa_supplicant *wpa_s,
>                                  const char *status, const char *parameter);
> +void wpas_dbus_signal_sta_authorized(struct wpa_supplicant *wpa_s,
> +                               const u8 *sta);
> +void wpas_dbus_signal_sta_deauthorized(struct wpa_supplicant *wpa_s,
> +                               const u8 *sta);
>
>  #else /* CONFIG_CTRL_IFACE_DBUS_NEW */
>
> @@ -493,6 +497,18 @@ static inline void wpas_dbus_signal_eap_status(struct wpa_supplicant *wpa_s,
>  {
>  }
>
> +static inline
> +void wpas_dbus_signal_sta_authorized(struct wpa_supplicant *wpa_s,
> +                               const u8 *sta)
> +{
> +}
> +
> +static inline
> +void wpas_dbus_signal_sta_deauthorized(struct wpa_supplicant *wpa_s,
> +                               const u8 *sta)
> +{
> +}
> +
>  #endif /* CONFIG_CTRL_IFACE_DBUS_NEW */
>
>  #endif /* CTRL_IFACE_DBUS_H_NEW */
> diff --git a/wpa_supplicant/notify.c b/wpa_supplicant/notify.c
> index ca6f7e7..9e6fa17 100644
> --- a/wpa_supplicant/notify.c
> +++ b/wpa_supplicant/notify.c
> @@ -547,6 +547,12 @@ static void wpas_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
>          */
>         wpas_dbus_signal_p2p_peer_joined(wpa_s, sta);
>  #endif /* CONFIG_P2P */
> +
> +       /*
> +        * Notify listeners a new station
> +        * has been authorized
> +        */
> +       wpas_dbus_signal_sta_authorized(wpa_s, sta);
>  }
>
>
> @@ -566,6 +572,12 @@ static void wpas_notify_ap_sta_deauthorized(struct wpa_supplicant *wpa_s,
>          */
>         wpas_dbus_signal_p2p_peer_disconnected(wpa_s, sta);
>  #endif /* CONFIG_P2P */
> +
> +       /*
> +        * Notify listeners a station
> +        * has been deauthorized
> +        */
> +       wpas_dbus_signal_sta_deauthorized(wpa_s, sta);
>  }
>
>
> --
> 1.7.9.5
>


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