DPP2: Presence Announcement notification

Define a control event with bootstrap id, frame source, frequency, and
chirp hash for receipt of Presence Announcement (chirp) frames.

Signed-off-by: Andrew Beltrano <anbeltra@microsoft.com>

src/common/dpp.c

@@ -4317,6 +4317,7 @@ void dpp_global_deinit(struct dpp_global *dpp)
 
 
 #ifdef CONFIG_DPP2
+
 struct wpabuf * dpp_build_presence_announcement(struct dpp_bootstrap_info *bi)
 {
 	struct wpabuf *msg;
@@ -4333,4 +4334,17 @@ struct wpabuf * dpp_build_presence_announcement(struct dpp_bootstrap_info *bi)
 			"DPP: Presence Announcement frame attributes", msg);
 	return msg;
 }
+
+
+void dpp_notify_chirp_received(void *msg_ctx, int id, const u8 *src,
+				unsigned int freq, const u8 *hash)
+{
+	char hex[SHA256_MAC_LEN * 2 + 1];
+
+	wpa_snprintf_hex(hex, sizeof(hex), hash, SHA256_MAC_LEN);
+	wpa_msg(msg_ctx, MSG_INFO,
+		DPP_EVENT_CHIRP_RX "id=%d src=" MACSTR " freq=%u hash=%s",
+		id, MAC2STR(src), freq, hex);
+}
+
 #endif /* CONFIG_DPP2 */

src/common/dpp.h

@@ -686,6 +686,8 @@ int dpp_tcp_init(struct dpp_global *dpp, struct dpp_authentication *auth,
 					 struct dpp_authentication *auth));
 
 struct wpabuf * dpp_build_presence_announcement(struct dpp_bootstrap_info *bi);
+void dpp_notify_chirp_received(void *msg_ctx, int id, const u8 *src,
+				unsigned int freq, const u8 *hash);
 
 struct dpp_global_config {
 	void *cb_ctx;

src/common/wpa_ctrl.h

@@ -202,6 +202,7 @@ extern "C" {
 #define DPP_EVENT_MUD_URL "DPP-MUD-URL "
 #define DPP_EVENT_BAND_SUPPORT "DPP-BAND-SUPPORT "
 #define DPP_EVENT_CSR "DPP-CSR "
+#define DPP_EVENT_CHIRP_RX "DPP-CHIRP-RX "
 
 /* MESH events */
 #define MESH_GROUP_STARTED "MESH-GROUP-STARTED "