Hi Arman,
On Sat, Oct 4, 2014 at 1:39 AM, Arman Uguray <armansito@xxxxxxxxxxxx> wrote:
> This patch introduces bt_gatt_server which will implement the server-side of the
> ATT protocol over a bt_att structure and construct responses based on a gatt_db
> structure.
> ---
> Makefile.am | 1 +
> src/shared/gatt-server.c | 155 +++++++++++++++++++++++++++++++++++++++++++++++
> src/shared/gatt-server.h | 47 ++++++++++++++
> 3 files changed, 203 insertions(+)
> create mode 100644 src/shared/gatt-server.c
> create mode 100644 src/shared/gatt-server.h
>
> diff --git a/Makefile.am b/Makefile.am
> index 1a1a43f..2dfea28 100644
> --- a/Makefile.am
> +++ b/Makefile.am
> @@ -114,6 +114,7 @@ shared_sources = src/shared/io.h src/shared/timeout.h \
> src/shared/att.h src/shared/att.c \
> src/shared/gatt-helpers.h src/shared/gatt-helpers.c \
> src/shared/gatt-client.h src/shared/gatt-client.c \
> + src/shared/gatt-server.h src/shared/gatt-server.c \
> src/shared/gatt-db.h src/shared/gatt-db.c \
> src/shared/gap.h src/shared/gap.c
>
> diff --git a/src/shared/gatt-server.c b/src/shared/gatt-server.c
> new file mode 100644
> index 0000000..8e32def
> --- /dev/null
> +++ b/src/shared/gatt-server.c
> @@ -0,0 +1,155 @@
> +/*
> + *
> + * BlueZ - Bluetooth protocol stack for Linux
> + *
> + * Copyright (C) 2014 Google Inc.
> + *
> + *
> + * This library is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU Lesser General Public
> + * License as published by the Free Software Foundation; either
> + * version 2.1 of the License, or (at your option) any later version.
> + *
> + * This library is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + * Lesser General Public License for more details.
> + *
> + * You should have received a copy of the GNU Lesser General Public
> + * License along with this library; if not, write to the Free Software
> + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
> + *
> + */
> +
> +#include "src/shared/att.h"
> +#include "lib/uuid.h"
> +#include "src/shared/queue.h"
> +#include "src/shared/gatt-db.h"
> +#include "src/shared/gatt-server.h"
> +#include "src/shared/gatt-helpers.h"
> +#include "src/shared/att-types.h"
> +#include "src/shared/util.h"
> +
> +#ifndef MAX
> +#define MAX(a, b) ((a) > (b) ? (a) : (b))
> +#endif
> +
> +struct bt_gatt_server {
> + struct gatt_db *db;
> + struct bt_att *att;
> + int ref_count;
> + uint16_t mtu;
> +};
> +
> +static bool gatt_server_register_att_handlers(struct bt_gatt_server *server)
> +{
> + /* TODO */
> + return true;
> +}
> +
> +struct bt_gatt_server *bt_gatt_server_new(struct bt_att *att,
> + uint16_t mtu)
> +{
> + struct bt_gatt_server *server;
> +
> + if (!att)
> + return NULL;
> +
> + server = new0(struct bt_gatt_server, 1);
> + if (!server)
> + return NULL;
> +
> + server->db = gatt_db_new();
> + if (!server->db) {
> + free(server);
> + return NULL;
> + }
> +
> + server->att = bt_att_ref(att);
> + server->mtu = MAX(mtu, BT_ATT_DEFAULT_LE_MTU);
> +
> + if (!gatt_server_register_att_handlers(server)) {
> + gatt_db_destroy(server->db);
> + bt_att_unref(att);
> + free(server);
> + return NULL;
> + }
> +
> + return bt_gatt_server_ref(server);
> +}
> +
> +struct bt_gatt_server *bt_gatt_server_ref(struct bt_gatt_server *server)
> +{
> + if (!server)
> + return NULL;
> +
> + __sync_fetch_and_add(&server->ref_count, 1);
> +
> + return server;
> +}
> +
> +void bt_gatt_server_unref(struct bt_gatt_server *server)
> +{
> + if (__sync_sub_and_fetch(&server->ref_count, 1))
> + return;
> +
> + if (server->debug_destroy)
> + server->debug_destroy(server->debug_data);
> +
> + gatt_server_cleanup(server);
> + gatt_db_destroy(server->db);
> +
> + free(server);
> +}
Have a function dedicated just to free so in case bt_gatt_server_new
fails you just call it.
> +bool bt_gatt_server_set_debug(struct bt_gatt_server *server,
> + bt_gatt_server_debug_func_t callback,
> + void *user_data,
> + bt_gatt_server_destroy_func_t destroy)
> +{
> + if (!server)
> + return false;
> +
> + if (server->debug_destroy)
> + server->debug_destroy(server->debug_data);
> +
> + server->debug_callback = callback;
> + server->debug_destroy = destroy;
> + server->debug_data = user_data;
> +
> + return true;
> +}
> +
> +uint16_t bt_gatt_server_add_service(struct bt_gatt_server *server,
> + const bt_uuid_t *uuid, bool primary,
> + uint16_t num_handles)
> +{
> + if (!server)
> + return 0;
> +
> + /* TODO: Send service changed signal here if necessary */
> +
> + return gatt_db_add_service(server->db, uuid, primary, num_handles);
> +}
> +
> +bool bt_gatt_server_remove_service(struct bt_gatt_server *server,
> + uint16_t handle)
> +{
> + if (!server)
> + return false;
> +
> + /* TODO: Send service changed signal here if necessary */
> +
> + return gatt_db_remove_service(server->db, handle);
> +}
> +
> +bool bt_gatt_server_service_set_active(struct bt_gatt_server *server,
> + uint16_t handle, bool active)
> +{
> + if (!server)
> + return false;
> +
> + /* TODO: Send service changed signal here if necessary */
> +
> + return gatt_db_service_set_active(server->db, handle, active);
> +}
> diff --git a/src/shared/gatt-server.h b/src/shared/gatt-server.h
> new file mode 100644
> index 0000000..0027715
> --- /dev/null
> +++ b/src/shared/gatt-server.h
> @@ -0,0 +1,47 @@
> +/*
> + *
> + * BlueZ - Bluetooth protocol stack for Linux
> + *
> + * Copyright (C) 2014 Google Inc.
> + *
> + *
> + * This library is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU Lesser General Public
> + * License as published by the Free Software Foundation; either
> + * version 2.1 of the License, or (at your option) any later version.
> + *
> + * This library is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + * Lesser General Public License for more details.
> + *
> + * You should have received a copy of the GNU Lesser General Public
> + * License along with this library; if not, write to the Free Software
> + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
> + *
> + */
> +
> +#include <stdint.h>
> +
> +struct bt_gatt_server;
> +
> +struct bt_gatt_server *bt_gatt_server_new(struct bt_att *att, uint16_t mtu);
> +
> +struct bt_gatt_server *bt_gatt_server_ref(struct bt_gatt_server *server);
> +void bt_gatt_server_unref(struct bt_gatt_server *server);
> +
> +typedef void (*bt_gatt_server_destroy_func_t)(void *user_data);
> +typedef void (*bt_gatt_server_debug_func_t)(const char *str, void *user_data);
> +
> +bool bt_gatt_server_set_debug(struct bt_gatt_server *server,
> + bt_gatt_server_debug_func_t callback,
> + void *user_data,
> + bt_gatt_server_destroy_func_t destroy);
> +
> +uint16_t bt_gatt_server_add_service(struct bt_gatt_server *server,
> + const bt_uuid_t *uuid, bool primary,
> + uint16_t num_handles);
> +bool bt_gatt_server_remove_service(struct bt_gatt_server *server,
> + uint16_t handle);
> +bool bt_gatt_server_service_set_active(struct bt_gatt_server *server,
> + uint16_t handle, bool active);
> --
> 2.1.0.rc2.206.gedb03e5
I think it is better to be able to attach/detach and existing db
object because otherwise we will need to reconstruct it on every
connection, furthermore the db might exist anyway since we need to be
able to register services even when we are not connected.
--
Luiz Augusto von Dentz
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