Return-Path: From: Arman Uguray To: linux-bluetooth@vger.kernel.org Cc: luiz.dentz@gmail.com, Arman Uguray Subject: [PATCH BlueZ 03/13] core: Introduce btd_gatt_server. Date: Tue, 10 Feb 2015 20:54:16 -0800 Message-Id: <1423630466-26327-4-git-send-email-armansito@chromium.org> In-Reply-To: <1423630466-26327-1-git-send-email-armansito@chromium.org> References: <1423630466-26327-1-git-send-email-armansito@chromium.org> Sender: linux-bluetooth-owner@vger.kernel.org List-ID: This patch introduces src/gatt-server.* that handles incoming ATT connections, manages per-adapter shared/gatt-db instances, and routes connections to the corresponding device object. This is the layer that will handle all the CCC management and Service Changed handling. --- Makefile.am | 1 + src/adapter.c | 8 ++- src/gatt-server.c | 203 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/gatt-server.h | 26 +++++++ src/main.c | 3 + 5 files changed, 239 insertions(+), 2 deletions(-) create mode 100644 src/gatt-server.c create mode 100644 src/gatt-server.h diff --git a/Makefile.am b/Makefile.am index 60811f1..3c64426 100644 --- a/Makefile.am +++ b/Makefile.am @@ -167,6 +167,7 @@ src_bluetoothd_SOURCES = $(builtin_sources) \ src/sdpd-server.c src/sdpd-request.c \ src/sdpd-service.c src/sdpd-database.c \ src/attrib-server.h src/attrib-server.c \ + src/gatt-server.h src/gatt-server.c \ src/sdp-xml.h src/sdp-xml.c \ src/sdp-client.h src/sdp-client.c \ src/textfile.h src/textfile.c \ diff --git a/src/adapter.c b/src/adapter.c index 1839286..db359ad 100644 --- a/src/adapter.c +++ b/src/adapter.c @@ -68,6 +68,7 @@ #include "attrib/att.h" #include "attrib/gatt.h" #include "attrib-server.h" +#include "gatt-server.h" #include "eir.h" #define ADAPTER_INTERFACE "org.bluez.Adapter1" @@ -302,6 +303,7 @@ static void dev_class_changed_callback(uint16_t index, uint16_t length, appearance[1] = rp->val[1] & 0x1f; /* removes service class */ appearance[2] = rp->val[2]; + /* TODO: Do this through btd_gatt_server instead */ attrib_gap_set(adapter, GATT_CHARAC_APPEARANCE, appearance, 2); } @@ -4014,6 +4016,7 @@ static void convert_sdp_entry(char *key, char *value, void *user_data) if (record_has_uuid(rec, att_uuid)) goto failed; + /* TODO: Do this through btd_gatt_server */ if (!gatt_parse_record(rec, &uuid, &psm, &start, &end)) goto failed; @@ -4548,7 +4551,7 @@ static void adapter_remove(struct btd_adapter *adapter) adapter->devices = NULL; unload_drivers(adapter); - btd_adapter_gatt_server_stop(adapter); + btd_gatt_server_unregister_adapter(adapter); g_slist_free(adapter->pin_callbacks); adapter->pin_callbacks = NULL; @@ -6590,7 +6593,8 @@ static int adapter_register(struct btd_adapter *adapter) agent_unref(agent); } - btd_adapter_gatt_server_start(adapter); + if (!btd_gatt_server_register_adapter(adapter)) + error("Failed to register adapter with GATT server"); load_config(adapter); fix_storage(adapter); diff --git a/src/gatt-server.c b/src/gatt-server.c new file mode 100644 index 0000000..977a057 --- /dev/null +++ b/src/gatt-server.c @@ -0,0 +1,203 @@ +/* + * + * BlueZ - Bluetooth protocol stack for Linux + * + * Copyright (C) 2015 Google Inc. + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + */ + +#ifdef HAVE_CONFIG_H +#include +#endif + +#include +#include + +#include "lib/uuid.h" +#include "btio/btio.h" +#include "src/shared/util.h" +#include "src/shared/queue.h" +#include "src/shared/gatt-db.h" +#include "log.h" +#include "adapter.h" +#include "device.h" +#include "gatt-server.h" + +#ifndef ATT_CID +#define ATT_CID 4 +#endif + +static struct queue *servers = NULL; + +struct btd_gatt_server { + struct btd_adapter *adapter; + struct gatt_db *db; + GIOChannel *le_io; +}; + +static void gatt_server_free(void *data) +{ + struct btd_gatt_server *server = data; + + if (server->le_io) { + g_io_channel_shutdown(server->le_io, FALSE, NULL); + g_io_channel_unref(server->le_io); + } + + gatt_db_unref(server->db); + btd_adapter_unref(server->adapter); + free(server); +} + +bool btd_gatt_server_init(void) +{ + + info("Initializing GATT server"); + + servers = queue_new(); + if (!servers) { + error("Failed to set up local GATT server"); + return false; + } + + return true; +} + +void btd_gatt_server_cleanup(void) +{ + info("Cleaning up GATT server"); + + queue_destroy(servers, gatt_server_free); + servers = NULL; +} + +static void connect_cb(GIOChannel *io, GError *gerr, gpointer user_data) +{ + struct btd_adapter *adapter; + struct btd_device *device; + uint8_t dst_type; + bdaddr_t src, dst; + + DBG("New incoming LE ATT connection"); + + if (gerr) { + error("%s", gerr->message); + return; + } + + bt_io_get(io, &gerr, BT_IO_OPT_SOURCE_BDADDR, &src, + BT_IO_OPT_DEST_BDADDR, &dst, + BT_IO_OPT_DEST_TYPE, &dst_type, + BT_IO_OPT_INVALID); + if (gerr) { + error("bt_io_get: %s", gerr->message); + g_error_free(gerr); + return; + } + + adapter = adapter_find(&src); + if (!adapter) + return; + + device = btd_adapter_get_device(adapter, &dst, dst_type); + if (!device) + return; + + device_attach_att(device, io); +} + +static bool match_adapter(const void *a, const void *b) +{ + const struct btd_gatt_server *server = a; + const struct btd_adapter *adapter = b; + + return server->adapter == adapter; +} + +bool btd_gatt_server_register_adapter(struct btd_adapter *adapter) +{ + struct btd_gatt_server *server; + GError *gerr = NULL; + const bdaddr_t *addr; + + if (!adapter) + return false; + + if (!servers) { + error("GATT server not initialized"); + return false; + } + + if (queue_find(servers, match_adapter, adapter)) { + error("Adapter already registered with GATT server"); + return false; + } + + server = new0(struct btd_gatt_server, 1); + if (!server) + return false; + + server->adapter = btd_adapter_ref(adapter); + server->db = gatt_db_new(); + if (!server->db) + goto fail; + + addr = btd_adapter_get_address(adapter); + server->le_io = bt_io_listen(connect_cb, NULL, NULL, NULL, &gerr, + BT_IO_OPT_SOURCE_BDADDR, addr, + BT_IO_OPT_SOURCE_TYPE, BDADDR_LE_PUBLIC, + BT_IO_OPT_CID, ATT_CID, + BT_IO_OPT_SEC_LEVEL, BT_IO_SEC_LOW, + BT_IO_OPT_INVALID); + if (!server->le_io) { + error("Failed to start listening: %s", gerr->message); + g_error_free(gerr); + goto fail; + } + + queue_push_tail(servers, server); + + /* TODO: Set up GAP/GATT services */ + + return true; + +fail: + gatt_server_free(server); + + return false; +} + +void btd_gatt_server_unregister_adapter(struct btd_adapter *adapter) +{ + if (!adapter || !servers) + return; + + queue_remove_all(servers, match_adapter, adapter, gatt_server_free); +} + +struct gatt_db *btd_gatt_server_get_db(struct btd_adapter *adapter) +{ + struct btd_gatt_server *server; + + if (!servers) { + error("GATT server not initialized"); + return false; + } + + server = queue_find(servers, match_adapter, adapter); + if (!server) + return false; + + return server->db; +} diff --git a/src/gatt-server.h b/src/gatt-server.h new file mode 100644 index 0000000..f97ad05 --- /dev/null +++ b/src/gatt-server.h @@ -0,0 +1,26 @@ +/* + * + * BlueZ - Bluetooth protocol stack for Linux + * + * Copyright (C) 2015 Google Inc. + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + */ + +bool btd_gatt_server_init(void); +void btd_gatt_server_cleanup(void); + +bool btd_gatt_server_register_adapter(struct btd_adapter *adapter); +void btd_gatt_server_unregister_adapter(struct btd_adapter *adapter); + +struct gatt_db *btd_gatt_server_get_db(struct btd_adapter *adapter); diff --git a/src/main.c b/src/main.c index 061060d..510388a 100644 --- a/src/main.c +++ b/src/main.c @@ -56,6 +56,7 @@ #include "agent.h" #include "profile.h" #include "gatt.h" +#include "gatt-server.h" #include "systemd.h" #define BLUEZ_NAME "org.bluez" @@ -579,6 +580,7 @@ int main(int argc, char *argv[]) g_dbus_set_flags(gdbus_flags); gatt_init(); + btd_gatt_server_init(); if (adapter_init() < 0) { error("Adapter handling initialization failed"); @@ -642,6 +644,7 @@ int main(int argc, char *argv[]) adapter_cleanup(); + btd_gatt_server_cleanup(); gatt_cleanup(); rfkill_exit(); -- 2.2.0.rc0.207.ga3a616c