From 30e62c915184537c3946f5b87331f8a8f407bc78 Mon Sep 17 00:00:00 2001
From: Anderson Lizardo <anderson.lizardo@openbossa.org>
Date: Tue, 10 Aug 2010 16:46:12 -0400
Subject: gatttool: add characteristic descriptor discovery support

The --start/--end options are reused to allow specifying the
starting/ending handles. Both 16-bit and 128-bit UUIDs are
pretty-printed using sdp_uuid2strn() function.
---
 attrib/gatttool.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

(limited to 'attrib/gatttool.c')

diff --git a/attrib/gatttool.c b/attrib/gatttool.c
index 28d00a1a..9d5e5f72 100644
--- a/attrib/gatttool.c
+++ b/attrib/gatttool.c
@@ -384,8 +384,55 @@ static gboolean characteristics_read(gpointer user_data)
 	return FALSE;
 }
 
+static void char_desc_cb(guint8 status, const guint8 *pdu, guint16 plen,
+							gpointer user_data)
+{
+	struct att_data_list *list;
+	guint8 format;
+	int i;
+
+	if (status != 0) {
+		g_printerr("Discover all characteristic descriptors failed: "
+						"%s\n", att_ecode2str(status));
+		goto done;
+	}
+
+	list = dec_find_info_resp(pdu, plen, &format);
+	if (list == NULL)
+		goto done;
+
+	for (i = 0; i < list->num; i++) {
+		char uuidstr[MAX_LEN_UUID_STR];
+		uint16_t handle;
+		uint8_t *value;
+		uuid_t uuid;
+
+		value = list->data[i];
+		handle = att_get_u16((uint16_t *) value);
+
+		if (format == 0x01)
+			sdp_uuid16_create(&uuid, att_get_u16((uint16_t *)
+								&value[2]));
+		else
+			sdp_uuid128_create(&uuid, &value[2]);
+
+		sdp_uuid2strn(&uuid, uuidstr, MAX_LEN_UUID_STR);
+		g_print("handle = 0x%04x, uuid = %s\n", handle, uuidstr);
+	}
+
+	att_data_list_free(list);
+
+done:
+	if (opt_listen == FALSE)
+		g_main_loop_quit(event_loop);
+}
+
 static gboolean characteristics_desc(gpointer user_data)
 {
+	GAttrib *attrib = user_data;
+
+	gatt_find_info(attrib, opt_start, opt_end, char_desc_cb, NULL);
+
 	return FALSE;
 }
 
-- 
cgit