This function will reserve number of handles and create service attribute.
Both types of service can be created, PRIMARY or SECONDARy, user can select
type with primary flag.
---
src/shared/gatt-db.c | 94 ++++++++++++++++++++++++++++++++++++++++++++++++++++
src/shared/gatt-db.h | 3 ++
2 files changed, 97 insertions(+)
diff --git a/src/shared/gatt-db.c b/src/shared/gatt-db.c
index b057c15..672c11c 100644
--- a/src/shared/gatt-db.c
+++ b/src/shared/gatt-db.c
@@ -23,16 +23,26 @@
#include <stdbool.h>
+#include "lib/uuid.h"
#include "src/shared/util.h"
#include "src/shared/queue.h"
#include "src/shared/gatt-db.h"
+static const bt_uuid_t primary_service_uuid = { .type = BT_UUID16,
+ .value.u16 = GATT_PRIM_SVC_UUID };
+static const bt_uuid_t secondary_service_uuid = { .type = BT_UUID16,
+ .value.u16 = GATT_SND_SVC_UUID };
+
struct gatt_db {
uint16_t next_handle;
struct queue *services;
};
struct gatt_db_attribute {
+ uint16_t handle;
+ bt_uuid_t uuid;
+ uint16_t val_len;
+ uint8_t value[0];
};
struct gatt_db_service {
@@ -76,3 +86,87 @@ void gatt_db_destroy(struct gatt_db *db)
queue_destroy(db->services, gatt_db_service_destroy);
free(db);
}
+
+static struct gatt_db_attribute *new_attribute(const bt_uuid_t *type,
+ const uint8_t *val,
+ uint16_t len)
+{
+ struct gatt_db_attribute *attribute;
+
+ attribute = malloc0(sizeof(struct gatt_db_attribute) + len);
+ if (!attribute)
+ return NULL;
+
+ attribute->uuid = *type;
+ memcpy(&attribute->value, val, len);
+ attribute->val_len = len;
+
+ return attribute;
+}
+
+static int uuid_to_le(const bt_uuid_t *uuid, uint8_t *dst)
+{
+ switch (uuid->type) {
+ case BT_UUID16:
+ put_le16(uuid->value.u16, dst);
+ break;
+ case BT_UUID32:
+ put_le32(uuid->value.u32, dst);
+ break;
+ default:
+ bswap_128(&uuid->value.u128, dst);
+ break;
+ }
+
+ return bt_uuid_len(uuid);
+}
+
+uint16_t gatt_db_add_service(struct gatt_db *db, const bt_uuid_t *uuid,
+ bool primary, uint16_t num_handles)
+{
+ struct gatt_db_service *service;
+ const bt_uuid_t *type;
+ uint8_t value[16];
+ uint16_t len;
+
+ if (num_handles < 1)
+ return 0;
+
+ service = new0(struct gatt_db_service, 1);
+ if (!service)
+ return 0;
+
+ service->attributes = new0(struct gatt_db_attribute *, num_handles);
+ if (!service->attributes) {
+ free(service);
+ return 0;
+ }
+
+ if (primary)
+ type = &primary_service_uuid;
+ else
+ type = &secondary_service_uuid;
+
+ len = uuid_to_le(uuid, value);
+
+ service->attributes[0] = new_attribute(type, value, len);
+ if (!service->attributes[0]) {
+ gatt_db_service_destroy(service);
+ return 0;
+ }
+
+ if (!queue_push_tail(db->services, service)) {
+ gatt_db_service_destroy(service);
+ return 0;
+ }
+
+ /* TODO now we get next handle from database. We should first look
+ * for 'holes' between existing services first, and assign next_handle
+ * only if enough space was not found.
+ */
+ service->attributes[0]->handle = db->next_handle;
+ db->next_handle += num_handles;
+ service->num_handles = num_handles;
+
+ return service->attributes[0]->handle;
+}
diff --git a/src/shared/gatt-db.h b/src/shared/gatt-db.h
index 2901afb..7cae6b1 100644
--- a/src/shared/gatt-db.h
+++ b/src/shared/gatt-db.h
@@ -25,3 +25,6 @@ struct gatt_db;
struct gatt_db *gatt_db_new(void);
void gatt_db_destroy(struct gatt_db *db);
+
+uint16_t gatt_db_add_service(struct gatt_db *db, const bt_uuid_t *uuid,
+ bool primary, uint16_t num_handles);
--
1.8.3.1
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