| /****************************************************************************** |
| * |
| * Copyright 2014 Google, Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at: |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| ******************************************************************************/ |
| |
| #define LOG_TAG "bt_btif_sock" |
| |
| #include <atomic> |
| |
| #include <base/logging.h> |
| |
| #include <frameworks/base/core/proto/android/bluetooth/enums.pb.h> |
| #include <hardware/bluetooth.h> |
| #include <hardware/bt_sock.h> |
| |
| #include "bta_api.h" |
| #include "btif_common.h" |
| #include "btif_config.h" |
| #include "btif_sock_l2cap.h" |
| #include "btif_sock_rfc.h" |
| #include "btif_sock_sco.h" |
| #include "btif_sock_sdp.h" |
| #include "btif_sock_thread.h" |
| #include "btif_uid.h" |
| #include "btif_util.h" |
| #include "common/metrics.h" |
| #include "device/include/controller.h" |
| #include "osi/include/thread.h" |
| |
| using bluetooth::Uuid; |
| |
| static bt_status_t btsock_listen(btsock_type_t type, const char* service_name, |
| const Uuid* uuid, int channel, int* sock_fd, |
| int flags, int app_uid); |
| static bt_status_t btsock_connect(const RawAddress* bd_addr, btsock_type_t type, |
| const Uuid* uuid, int channel, int* sock_fd, |
| int flags, int app_uid); |
| |
| static void btsock_request_max_tx_data_length(const RawAddress& bd_addr); |
| |
| static void btsock_signaled(int fd, int type, int flags, uint32_t user_id); |
| |
| static std::atomic_int thread_handle{-1}; |
| static thread_t* thread; |
| |
| const btsock_interface_t* btif_sock_get_interface(void) { |
| static btsock_interface_t interface = { |
| sizeof(interface), btsock_listen, /* listen */ |
| btsock_connect, /* connect */ |
| btsock_request_max_tx_data_length /* request_max_tx_data_length */ |
| }; |
| |
| return &interface; |
| } |
| |
| bt_status_t btif_sock_init(uid_set_t* uid_set) { |
| CHECK(thread_handle == -1); |
| CHECK(thread == NULL); |
| |
| bt_status_t status; |
| btsock_thread_init(); |
| thread_handle = btsock_thread_create(btsock_signaled, NULL); |
| if (thread_handle == -1) { |
| LOG_ERROR(LOG_TAG, "%s unable to create btsock_thread.", __func__); |
| goto error; |
| } |
| |
| status = btsock_rfc_init(thread_handle, uid_set); |
| if (status != BT_STATUS_SUCCESS) { |
| LOG_ERROR(LOG_TAG, "%s error initializing RFCOMM sockets: %d", __func__, |
| status); |
| goto error; |
| } |
| |
| status = btsock_l2cap_init(thread_handle, uid_set); |
| if (status != BT_STATUS_SUCCESS) { |
| LOG_ERROR(LOG_TAG, "%s error initializing L2CAP sockets: %d", __func__, |
| status); |
| goto error; |
| } |
| |
| thread = thread_new("btif_sock"); |
| if (!thread) { |
| LOG_ERROR(LOG_TAG, "%s error creating new thread.", __func__); |
| btsock_rfc_cleanup(); |
| goto error; |
| } |
| |
| status = btsock_sco_init(thread); |
| if (status != BT_STATUS_SUCCESS) { |
| LOG_ERROR(LOG_TAG, "%s error initializing SCO sockets: %d", __func__, |
| status); |
| btsock_rfc_cleanup(); |
| goto error; |
| } |
| |
| return BT_STATUS_SUCCESS; |
| |
| error:; |
| thread_free(thread); |
| thread = NULL; |
| if (thread_handle != -1) btsock_thread_exit(thread_handle); |
| thread_handle = -1; |
| uid_set = NULL; |
| return BT_STATUS_FAIL; |
| } |
| |
| void btif_sock_cleanup(void) { |
| int saved_handle = thread_handle; |
| if (std::atomic_exchange(&thread_handle, -1) == -1) return; |
| |
| btsock_thread_exit(saved_handle); |
| btsock_rfc_cleanup(); |
| btsock_sco_cleanup(); |
| btsock_l2cap_cleanup(); |
| thread_free(thread); |
| thread = NULL; |
| } |
| |
| static bt_status_t btsock_listen(btsock_type_t type, const char* service_name, |
| const Uuid* service_uuid, int channel, |
| int* sock_fd, int flags, int app_uid) { |
| if ((flags & BTSOCK_FLAG_NO_SDP) == 0) { |
| CHECK(sock_fd != NULL); |
| } |
| |
| *sock_fd = INVALID_FD; |
| bt_status_t status = BT_STATUS_FAIL; |
| int original_channel = channel; |
| |
| bluetooth::common::LogSocketConnectionState( |
| RawAddress::kEmpty, 0, type, |
| android::bluetooth::SocketConnectionstateEnum:: |
| SOCKET_CONNECTION_STATE_LISTENING, |
| 0, 0, app_uid, channel, android::bluetooth::SOCKET_ROLE_LISTEN); |
| switch (type) { |
| case BTSOCK_RFCOMM: |
| status = btsock_rfc_listen(service_name, service_uuid, channel, sock_fd, |
| flags, app_uid); |
| break; |
| case BTSOCK_L2CAP: |
| status = |
| btsock_l2cap_listen(service_name, channel, sock_fd, flags, app_uid); |
| break; |
| case BTSOCK_L2CAP_LE: |
| if (flags & BTSOCK_FLAG_NO_SDP) { |
| /* Set channel to zero so that it will be assigned */ |
| channel = 0; |
| } else if (channel <= 0) { |
| LOG_ERROR(LOG_TAG, "%s: type BTSOCK_L2CAP_LE: invalid channel=%d", |
| __func__, channel); |
| break; |
| } |
| flags |= BTSOCK_FLAG_LE_COC; |
| LOG_DEBUG( |
| LOG_TAG, |
| "%s: type=BTSOCK_L2CAP_LE, channel=0x%x, original=0x%x, flags=0x%x", |
| __func__, channel, original_channel, flags); |
| status = |
| btsock_l2cap_listen(service_name, channel, sock_fd, flags, app_uid); |
| break; |
| case BTSOCK_SCO: |
| status = btsock_sco_listen(sock_fd, flags); |
| break; |
| |
| default: |
| LOG_ERROR(LOG_TAG, "%s unknown/unsupported socket type: %d", __func__, |
| type); |
| status = BT_STATUS_UNSUPPORTED; |
| break; |
| } |
| if (status != BT_STATUS_SUCCESS) { |
| bluetooth::common::LogSocketConnectionState( |
| RawAddress::kEmpty, 0, type, |
| android::bluetooth::SocketConnectionstateEnum:: |
| SOCKET_CONNECTION_STATE_DISCONNECTED, |
| 0, 0, app_uid, channel, android::bluetooth::SOCKET_ROLE_LISTEN); |
| } |
| return status; |
| } |
| |
| static bt_status_t btsock_connect(const RawAddress* bd_addr, btsock_type_t type, |
| const Uuid* uuid, int channel, int* sock_fd, |
| int flags, int app_uid) { |
| CHECK(bd_addr != NULL); |
| CHECK(sock_fd != NULL); |
| |
| *sock_fd = INVALID_FD; |
| bt_status_t status = BT_STATUS_FAIL; |
| |
| bluetooth::common::LogSocketConnectionState( |
| *bd_addr, 0, type, |
| android::bluetooth::SocketConnectionstateEnum:: |
| SOCKET_CONNECTION_STATE_CONNECTING, |
| 0, 0, app_uid, channel, android::bluetooth::SOCKET_ROLE_CONNECTION); |
| switch (type) { |
| case BTSOCK_RFCOMM: |
| status = |
| btsock_rfc_connect(bd_addr, uuid, channel, sock_fd, flags, app_uid); |
| break; |
| |
| case BTSOCK_L2CAP: |
| status = btsock_l2cap_connect(bd_addr, channel, sock_fd, flags, app_uid); |
| break; |
| |
| case BTSOCK_L2CAP_LE: { |
| flags |= BTSOCK_FLAG_LE_COC; |
| |
| // Ensure device is in inquiry database |
| int addr_type = 0; |
| int device_type = 0; |
| |
| if (btif_get_address_type(*bd_addr, &addr_type) && |
| btif_get_device_type(*bd_addr, &device_type) && |
| device_type != BT_DEVICE_TYPE_BREDR) { |
| BTA_DmAddBleDevice(*bd_addr, addr_type, device_type); |
| } |
| |
| LOG_DEBUG(LOG_TAG, "%s: type=BTSOCK_L2CAP_LE, channel=0x%x, flags=0x%x", |
| __func__, channel, flags); |
| status = btsock_l2cap_connect(bd_addr, channel, sock_fd, flags, app_uid); |
| break; |
| } |
| |
| case BTSOCK_SCO: |
| status = btsock_sco_connect(bd_addr, sock_fd, flags); |
| break; |
| |
| default: |
| LOG_ERROR(LOG_TAG, "%s unknown/unsupported socket type: %d", __func__, |
| type); |
| status = BT_STATUS_UNSUPPORTED; |
| break; |
| } |
| if (status != BT_STATUS_SUCCESS) { |
| bluetooth::common::LogSocketConnectionState( |
| *bd_addr, 0, type, |
| android::bluetooth::SocketConnectionstateEnum:: |
| SOCKET_CONNECTION_STATE_DISCONNECTED, |
| 0, 0, app_uid, channel, android::bluetooth::SOCKET_ROLE_CONNECTION); |
| } |
| return status; |
| } |
| |
| static void btsock_request_max_tx_data_length(const RawAddress& remote_device) { |
| const controller_t* controller = controller_get_interface(); |
| uint16_t max_len = controller->get_ble_maximum_tx_data_length(); |
| |
| DVLOG(2) << __func__ << ": max_len=" << max_len; |
| |
| BTA_DmBleSetDataLength(remote_device, max_len); |
| } |
| |
| static void btsock_signaled(int fd, int type, int flags, uint32_t user_id) { |
| switch (type) { |
| case BTSOCK_RFCOMM: |
| btsock_rfc_signaled(fd, flags, user_id); |
| break; |
| case BTSOCK_L2CAP: |
| case BTSOCK_L2CAP_LE: |
| /* Note: The caller may not distinguish between BTSOCK_L2CAP and |
| * BTSOCK_L2CAP_LE correctly */ |
| btsock_l2cap_signaled(fd, flags, user_id); |
| break; |
| default: |
| LOG(FATAL) << "Invalid socket type! type=" << type << " fd=" << fd |
| << " flags=" << flags << " user_id=" << user_id; |
| break; |
| } |
| } |