[PATCH] dbus: add BSS changes notifications

Witold Sowa witold.sowa
Mon Jan 4 11:41:57 PST 2010


Send PropertiesChanged signal from BSS object with dict of properties
that has changed and theirs values if any changes occurred.
---
 wpa_supplicant/bss.c           |   67 ++++++++++++++++++++++++++++++++++++++++
 wpa_supplicant/dbus/dbus_new.c |   54 ++++++++++++++++++++++++++++++++
 wpa_supplicant/dbus/dbus_new.h |   14 ++++++++
 wpa_supplicant/notify.c        |   58 ++++++++++++++++++++++++++++++++++
 wpa_supplicant/notify.h        |   16 +++++++++
 5 files changed, 209 insertions(+), 0 deletions(-)

diff --git a/wpa_supplicant/bss.c b/wpa_supplicant/bss.c
index bd8d061..269875a 100644
--- a/wpa_supplicant/bss.c
+++ b/wpa_supplicant/bss.c
@@ -135,10 +135,77 @@ static void wpa_bss_add(struct wpa_supplicant *wpa_s,
 	}
 }
 
+static int are_ies_equal(const struct wpa_bss *old,
+		       const struct wpa_scan_res *new,
+		       u32 ie)
+{
+	const u8 *old_ie, *new_ie;
+	int new_ie_len, old_ie_len;
+
+	switch (ie) {
+	case WPA_IE_VENDOR_TYPE:
+	case WPS_IE_VENDOR_TYPE:
+		old_ie = wpa_bss_get_vendor_ie(old, WPA_IE_VENDOR_TYPE);
+		new_ie = wpa_scan_get_vendor_ie(new, WPA_IE_VENDOR_TYPE);
+		break;
+	case WLAN_EID_RSN:
+	case WLAN_EID_SUPP_RATES:
+	case WLAN_EID_EXT_SUPP_RATES:
+		old_ie = wpa_bss_get_ie(old, WLAN_EID_RSN);
+		new_ie = wpa_scan_get_ie(new, WLAN_EID_RSN);
+		break;
+	default:
+		wpa_printf(MSG_DEBUG, "bss: %s: cannot compare IEs", __func__);
+		return 0;
+	}
+
+	old_ie_len = old_ie ? old_ie[1] + 2 : 0;
+	new_ie_len = new_ie ? new_ie[1] + 2 : 0;
+
+	return (old_ie_len == new_ie_len &&
+		 os_memcmp(old_ie, new_ie, old_ie_len) == 0);
+
+}
+
+static void notify_bss_changes(struct wpa_supplicant *wpa_s,
+			       const struct wpa_bss *old,
+			       const struct wpa_scan_res *new)
+{
+	int caps = old->caps ^ new->caps;
+
+	if (old->freq != new->freq)
+		wpas_notify_bss_freq_changed(wpa_s, old->id);
+
+	if (old->level != new->level)
+		wpas_notify_bss_signal_changed(wpa_s, old->id);
+
+
+	if (caps & IEEE80211_CAP_PRIVACY)
+		wpas_notify_bss_privacy_changed(wpa_s, old->id);
+	if (caps & IEEE80211_CAP_IBSS)
+		wpas_notify_bss_mode_changed(wpa_s, old->id);
+
+
+	if (!are_ies_equal(old, new, WPA_IE_VENDOR_TYPE))
+		wpas_notify_bss_wpaie_changed(wpa_s, old->id);
+
+	if (!are_ies_equal(old, new, WLAN_EID_RSN))
+		wpas_notify_bss_rsnie_changed(wpa_s, old->id);
+
+	if (!are_ies_equal(old, new, WPS_IE_VENDOR_TYPE))
+		wpas_notify_bss_wpsie_changed(wpa_s, old->id);
+
+	if (!are_ies_equal(old, new, WLAN_EID_SUPP_RATES) ||
+	    !are_ies_equal(old, new, WLAN_EID_EXT_SUPP_RATES))
+		wpas_notify_bss_rates_changed(wpa_s, old->id);
+}
+
 
 static void wpa_bss_update(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
 			   struct wpa_scan_res *res)
 {
+	notify_bss_changes(wpa_s, bss, res);
+
 	bss->scan_miss_count = 0;
 	bss->last_update_idx = wpa_s->bss_update_idx;
 	wpa_bss_copy_res(bss, res);
diff --git a/wpa_supplicant/dbus/dbus_new.c b/wpa_supplicant/dbus/dbus_new.c
index 9fc496d..67b76ce 100644
--- a/wpa_supplicant/dbus/dbus_new.c
+++ b/wpa_supplicant/dbus/dbus_new.c
@@ -699,6 +699,60 @@ void wpas_dbus_signal_prop_changed(struct wpa_supplicant *wpa_s,
 				       WPAS_DBUS_NEW_IFACE_INTERFACE, prop);
 }
 
+/**
+ * wpas_dbus_bss_signal_prop_changed - Signals change of BSS property
+ * @wpa_s: %wpa_supplicant network interface data
+ * @property: indicates which property has changed
+ * @id: unique BSS identifier
+ *
+ * Sends ProertyChanged signals with path, interface and arguments
+ * depending on which property has changed.
+ */
+void wpas_dbus_bss_signal_prop_changed(struct wpa_supplicant *wpa_s,
+				       enum wpas_dbus_bss_prop property,
+				       unsigned int id)
+{
+	char path[WPAS_DBUS_OBJECT_PATH_MAX];
+	char *prop;
+
+	switch (property) {
+	case WPAS_DBUS_BSS_PROP_SIGNAL:
+		prop = "Signal";
+		break;
+	case WPAS_DBUS_BSS_PROP_FREQ:
+		prop = "Frequency";
+		break;
+	case WPAS_DBUS_BSS_PROP_MODE:
+		prop = "Mode";
+		break;
+	case WPAS_DBUS_BSS_PROP_PRIVACY:
+		prop = "Privacy";
+		break;
+	case WPAS_DBUS_BSS_PROP_RATES:
+		prop = "Rates";
+		break;
+	case WPAS_DBUS_BSS_PROP_WPAIE:
+		prop = "WPAIE";
+		break;
+	case WPAS_DBUS_BSS_PROP_RSNIE:
+		prop = "RSNIE";
+		break;
+	case WPAS_DBUS_BSS_PROP_WPSIE:
+		prop = "WPSIE";
+		break;
+	default:
+		wpa_printf(MSG_ERROR, "dbus: %s: Unknown Property value %d",
+			   __func__, property);
+		return;
+	}
+
+	snprintf(path, WPAS_DBUS_OBJECT_PATH_MAX,
+		 "%s/" WPAS_DBUS_NEW_BSSIDS_PART "/%u",
+		 wpa_s->dbus_new_path, id);
+
+	wpa_dbus_mark_property_changed(wpa_s->global->dbus, path,
+				       WPAS_DBUS_NEW_IFACE_BSSID, prop);
+}
 
 /**
  * wpas_dbus_signal_debug_level_changed - Signals change of debug param
diff --git a/wpa_supplicant/dbus/dbus_new.h b/wpa_supplicant/dbus/dbus_new.h
index e20ab76..d00ae64 100644
--- a/wpa_supplicant/dbus/dbus_new.h
+++ b/wpa_supplicant/dbus/dbus_new.h
@@ -32,6 +32,17 @@ enum wpas_dbus_prop {
 	WPAS_DBUS_PROP_CURRENT_NETWORK,
 };
 
+enum wpas_dbus_bss_prop {
+	WPAS_DBUS_BSS_PROP_SIGNAL,
+	WPAS_DBUS_BSS_PROP_FREQ,
+	WPAS_DBUS_BSS_PROP_MODE,
+	WPAS_DBUS_BSS_PROP_PRIVACY,
+	WPAS_DBUS_BSS_PROP_RATES,
+	WPAS_DBUS_BSS_PROP_WPAIE,
+	WPAS_DBUS_BSS_PROP_RSNIE,
+	WPAS_DBUS_BSS_PROP_WPSIE,
+};
+
 #define WPAS_DBUS_OBJECT_PATH_MAX 150
 
 #define WPAS_DBUS_NEW_SERVICE		"fi.w1.wpa_supplicant1"
@@ -80,6 +91,9 @@ int wpas_dbus_register_interface(struct wpa_supplicant *wpa_s);
 int wpas_dbus_unregister_interface(struct wpa_supplicant *wpa_s);
 void wpas_dbus_signal_prop_changed(struct wpa_supplicant *wpa_s,
 				   enum wpas_dbus_prop property);
+void wpas_dbus_bss_signal_prop_changed(struct wpa_supplicant *wpa_s,
+				       enum wpas_dbus_bss_prop property,
+				       unsigned int id);
 void wpas_dbus_signal_network_enabled_changed(struct wpa_supplicant *wpa_s,
 					      struct wpa_ssid *ssid);
 void wpas_dbus_signal_network_selected(struct wpa_supplicant *wpa_s, int id);
diff --git a/wpa_supplicant/notify.c b/wpa_supplicant/notify.c
index 970ba9b..1ec199b 100644
--- a/wpa_supplicant/notify.c
+++ b/wpa_supplicant/notify.c
@@ -209,6 +209,64 @@ void wpas_notify_bss_removed(struct wpa_supplicant *wpa_s,
 }
 
 
+void wpas_notify_bss_freq_changed(struct wpa_supplicant *wpa_s,
+				  unsigned int id)
+{
+	wpas_dbus_bss_signal_prop_changed(wpa_s, WPAS_DBUS_BSS_PROP_FREQ, id);
+}
+
+
+void wpas_notify_bss_signal_changed(struct wpa_supplicant *wpa_s,
+				    unsigned int id)
+{
+	wpas_dbus_bss_signal_prop_changed(wpa_s, WPAS_DBUS_BSS_PROP_SIGNAL,
+					  id);
+}
+
+
+void wpas_notify_bss_privacy_changed(struct wpa_supplicant *wpa_s,
+				     unsigned int id)
+{
+	wpas_dbus_bss_signal_prop_changed(wpa_s, WPAS_DBUS_BSS_PROP_PRIVACY,
+					  id);
+}
+
+
+void wpas_notify_bss_mode_changed(struct wpa_supplicant *wpa_s,
+				  unsigned int id)
+{
+	wpas_dbus_bss_signal_prop_changed(wpa_s, WPAS_DBUS_BSS_PROP_MODE, id);
+}
+
+
+void wpas_notify_bss_wpaie_changed(struct wpa_supplicant *wpa_s,
+				   unsigned int id)
+{
+	wpas_dbus_bss_signal_prop_changed(wpa_s, WPAS_DBUS_BSS_PROP_WPAIE, id);
+}
+
+
+void wpas_notify_bss_rsnie_changed(struct wpa_supplicant *wpa_s,
+				   unsigned int id)
+{
+	wpas_dbus_bss_signal_prop_changed(wpa_s, WPAS_DBUS_BSS_PROP_RSNIE, id);
+}
+
+
+void wpas_notify_bss_wpsie_changed(struct wpa_supplicant *wpa_s,
+				   unsigned int id)
+{
+	wpas_dbus_bss_signal_prop_changed(wpa_s, WPAS_DBUS_BSS_PROP_WPSIE, id);
+}
+
+
+void wpas_notify_bss_rates_changed(struct wpa_supplicant *wpa_s,
+				   unsigned int id)
+{
+	wpas_dbus_bss_signal_prop_changed(wpa_s, WPAS_DBUS_BSS_PROP_RATES, id);
+}
+
+
 void wpas_notify_blob_added(struct wpa_supplicant *wpa_s, const char *name)
 {
 	wpas_dbus_signal_blob_added(wpa_s, name);
diff --git a/wpa_supplicant/notify.h b/wpa_supplicant/notify.h
index 4cdd255..868a435 100644
--- a/wpa_supplicant/notify.h
+++ b/wpa_supplicant/notify.h
@@ -51,6 +51,22 @@ void wpas_notify_bss_added(struct wpa_supplicant *wpa_s, u8 bssid[],
 			   unsigned int id);
 void wpas_notify_bss_removed(struct wpa_supplicant *wpa_s, u8 bssid[],
 			     unsigned int id);
+void wpas_notify_bss_freq_changed(struct wpa_supplicant *wpa_s,
+				  unsigned int id);
+void wpas_notify_bss_signal_changed(struct wpa_supplicant *wpa_s,
+				    unsigned int id);
+void wpas_notify_bss_privacy_changed(struct wpa_supplicant *wpa_s,
+				     unsigned int id);
+void wpas_notify_bss_mode_changed(struct wpa_supplicant *wpa_s,
+				  unsigned int id);
+void wpas_notify_bss_wpaie_changed(struct wpa_supplicant *wpa_s,
+				   unsigned int id);
+void wpas_notify_bss_rsnie_changed(struct wpa_supplicant *wpa_s,
+				   unsigned int id);
+void wpas_notify_bss_wpsie_changed(struct wpa_supplicant *wpa_s,
+				   unsigned int id);
+void wpas_notify_bss_rates_changed(struct wpa_supplicant *wpa_s,
+				   unsigned int id);
 void wpas_notify_blob_added(struct wpa_supplicant *wpa_s, const char *name);
 void wpas_notify_blob_removed(struct wpa_supplicant *wpa_s, const char *name);
 
-- 
1.6.0.2



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