[PATCH 7/8] attrib-server: Allocate 128-bits UUIDs using highest available handlers

[Santiago Carot-Nemesio <sancane@gmail.com>]

128-uuids services are grouped at the end of the handlers database list.
This group grows from the highest handlers toward lowers handlers
until the whole range is used or the last 16 bit-uuid service is reached.
---
 src/attrib-server.c |   42 +++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 41 insertions(+), 1 deletions(-)

diff --git a/src/attrib-server.c b/src/attrib-server.c
index 3f72ff8..46448c0 100644
--- a/src/attrib-server.c
+++ b/src/attrib-server.c
@@ -1318,7 +1318,47 @@ static uint16_t find_uuid16_avail(struct btd_adapter *adapter, uint16_t nitems)
 
 static uint16_t find_uuid128_avail(struct btd_adapter *adapter, uint16_t nitems)
 {
-	/* TODO: Allocate 128 uuids at the end of the list */
+	uint16_t handle = 0, end = 0xffff;
+	struct gatt_server *server;
+	GList *dl;
+	GSList *l;
+
+	l = g_slist_find_custom(servers, adapter, adapter_cmp);
+	if (l == NULL)
+		return 0;
+
+	server = l->data;
+	if (server->database == NULL)
+		return 0xffff - nitems + 1;
+
+	for (dl = g_list_last(server->database); dl; dl = dl->prev) {
+		struct attribute *a = dl->data;
+
+		if (handle == 0)
+			handle = a->handle;
+
+		if (bt_uuid_cmp(&a->uuid, &prim_uuid) != 0 &&
+				bt_uuid_cmp(&a->uuid, &snd_uuid) != 0)
+			continue;
+
+		if (end - handle >= nitems)
+			return end - nitems + 1;
+
+		if (a->len == 2) {
+			/* 16 bit UUID service definition */
+			return 0;
+		}
+
+		if (a->handle == 0x0001)
+			return 0;
+
+		end = a->handle - 1;
+		handle = 0;
+	}
+
+	if (end - 0x0001 >= nitems)
+		return end - nitems + 1;
+
 	return 0;
 }
 
-- 
1.7.8.4