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/**
* @file libimobiledevice/bt_packet_logger.h
* @brief Capture the Bluetooth HCI trace from a device
* \internal
*
* Copyright (c) 2021 Geoffrey Kruse, All Rights Reserved.
*
* 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 Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef IBT_PACKET_LOGGER_H
#define IBT_PACKET_LOGGER_H
#ifdef __cplusplus
extern "C" {
#endif
#include <libimobiledevice/libimobiledevice.h>
#include <libimobiledevice/lockdown.h>
#define BT_PACKETLOGGER_SERVICE_NAME "com.apple.bluetooth.BTPacketLogger"
#define BT_MAX_PACKET_SIZE 65535
/** Error Codes */
typedef enum {
BT_PACKET_LOGGER_E_SUCCESS = 0,
BT_PACKET_LOGGER_E_INVALID_ARG = -1,
BT_PACKET_LOGGER_E_MUX_ERROR = -2,
BT_PACKET_LOGGER_E_SSL_ERROR = -3,
BT_PACKET_LOGGER_E_NOT_ENOUGH_DATA = -4,
BT_PACKET_LOGGER_E_TIMEOUT = -5,
BT_PACKET_LOGGER_E_UNKNOWN_ERROR = -256
} bt_packet_logger_error_t;
typedef struct {
uint32_t length;
uint32_t ts_secs;
uint32_t ts_usecs;
} bt_packet_logger_header_t;
typedef struct bt_packet_logger_client_private bt_packet_logger_client_private;
typedef bt_packet_logger_client_private *bt_packet_logger_client_t; /**< The client handle. */
/** Receives each hci packet received from the device. */
typedef void (*bt_packet_logger_receive_cb_t)(uint8_t * data, uint16_t len, void *user_data);
/* Interface */
/**
* Connects to the bt_packet_logger service on the specified device.
*
* @param device The device to connect to.
* @param service The service descriptor returned by lockdownd_start_service.
* @param client Pointer that will point to a newly allocated
* bt_packet_logger_client_t upon successful return. Must be freed using
* bt_packet_logger_client_free() after use.
*
* @return BT_PACKET_LOGGER_E_SUCCESS on success, BT_PACKET_LOGGER_E_INVALID_ARG when
* client is NULL, or an BT_PACKET_LOGGER_E_* error code otherwise.
*/
bt_packet_logger_error_t bt_packet_logger_client_new(idevice_t device, lockdownd_service_descriptor_t service, bt_packet_logger_client_t * client);
/**
* Starts a new bt_packet_logger service on the specified device and connects to it.
*
* @param device The device to connect to.
* @param client Pointer that will point to a newly allocated
* bt_packet_logger_client_t upon successful return. Must be freed using
* bt_packet_logger_client_free() after use.
* @param label The label to use for communication. Usually the program name.
* Pass NULL to disable sending the label in requests to lockdownd.
*
* @return BT_PACKET_LOGGER_E_SUCCESS on success, or an BT_PACKET_LOGGER_E_* error
* code otherwise.
*/
bt_packet_logger_error_t bt_packet_logger_client_start_service(idevice_t device, bt_packet_logger_client_t * client, const char* label);
/**
* Disconnects a bt_packet_logger client from the device and frees up the
* bt_packet_logger client data.
*
* @param client The bt_packet_logger client to disconnect and free.
*
* @return BT_PACKET_LOGGER_E_SUCCESS on success, BT_PACKET_LOGGER_E_INVALID_ARG when
* client is NULL, or an BT_PACKET_LOGGER_E_* error code otherwise.
*/
bt_packet_logger_error_t bt_packet_logger_client_free(bt_packet_logger_client_t client);
/**
* Starts capturing the hci interface from the device using a callback.
*
* Use bt_packet_logger_stop_capture() to stop receiving hci data.
*
* @param client The bt_packet_logger client to use
* @param callback Callback to receive each packet from the hci interface.
* @param user_data Custom pointer passed to the callback function.
*
* @return BT_PACKET_LOGGER_E_SUCCESS on success,
* BT_PACKET_LOGGER_E_INVALID_ARG when one or more parameters are
* invalid or BT_PACKET_LOGGER_E_UNKNOWN_ERROR when an unspecified
* error occurs or an hci capture has already been started.
*/
bt_packet_logger_error_t bt_packet_logger_start_capture(bt_packet_logger_client_t client, bt_packet_logger_receive_cb_t callback, void* user_data);
/**
* Stops capturing the hci interface from the device.
*
* Use bt_packet_logger_start_capture() to start receiving the hci data.
*
* @param client The bt_packet_logger client to use
*
* @return BT_PACKET_LOGGER_E_SUCCESS on success,
* BT_PACKET_LOGGER_E_INVALID_ARG when one or more parameters are
* invalid or BT_PACKET_LOGGER_E_UNKNOWN_ERROR when an unspecified
* error occurs or an hci capture has already been started.
*/
bt_packet_logger_error_t bt_packet_logger_stop_capture(bt_packet_logger_client_t client);
/* Receiving */
/**
* Receives data using the given bt_packet_logger client with specified timeout.
*
* @param client The bt_packet_logger client to use for receiving
* @param data Buffer that will be filled with the data received
* @param size Number of bytes to receive
* @param received Number of bytes received (can be NULL to ignore)
* @param timeout Maximum time in milliseconds to wait for data.
*
* @return BT_PACKET_LOGGER_E_SUCCESS on success,
* BT_PACKET_LOGGER_E_INVALID_ARG when one or more parameters are
* invalid, BT_PACKET_LOGGER_E_MUX_ERROR when a communication error
* occurs, or BT_PACKET_LOGGER_E_UNKNOWN_ERROR when an unspecified
* error occurs.
*/
bt_packet_logger_error_t bt_packet_logger_receive_with_timeout(bt_packet_logger_client_t client, char *data, uint32_t size, uint32_t *received, unsigned int timeout);
#ifdef __cplusplus
}
#endif
#endif
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