xref: /libbtbb/lib/src/pcap-common.h (revision 6887217ed018f03f055bea4de69184c36643b69f)

/* -*- c -*- */
/*
 * Copyright 2014 Christopher D. Kilgour techie AT whiterocker.com
 *
 * This file is part of libbtbb
 *
 * 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, 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with libbtbb; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */
#ifndef PCAP_COMMON_DOT_H
#define PCAP_COMMON_DOT_H

/* pull definitions for BT DLTs and pseudoheaders from libpcap, if possible */
#if defined(ENABLE_PCAP)
// #include <pcap/pcap.h>
// #include <pcap/bluetooth.h>
#define DLT_PPI 192
#define DLT_USER0 147
#endif /* ENABLE_PCAP */

#if defined( __APPLE__ )
#include <CoreServices/CoreServices.h>
#define htobe32 EndianU32_NtoB
#define be32toh EndianU32_BtoN
#define le32toh EndianU32_LtoN
#define htobe64 EndianU64_NtoB
#define be64toh EndianU64_BtoN
#define htole16 EndianU16_NtoL
#define htole32 EndianU32_NtoL
#else
#include <endian.h>
#endif

#if !defined( htole16 ) /* will be defined under Linux when endian.h already included */
#if defined( __GNUC__ )
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
inline uint16_t htole16(uint16_t host_16bits) { return host_16bits; }
inline uint16_t le16toh(uint16_t little_endian_16bits) { return little_endian_16bits; }
inline uint32_t htole32(uint32_t host_32bits) { return host_32bits; }
inline uint32_t le32toh(uint32_t little_endian_32bits) { return little_endian_32bits; }
inline uint64_t htole64(uint64_t host_64bits) { return host_64bits; }
inline uint64_t le64toh(uint64_t little_endian_64bits) { return little_endian_64bits; }
#else
#error "FIXME: need to support big-endian under GNU"
#endif /* __BYTE_ORDER__ */
#else /* not GNU C */
#error "FIXME: need to support non-GNU compiler"
#endif /* __GNUC__ */
#endif /* htole16 */

#define MIN(X, Y) (((X) < (Y)) ? (X) : (Y))

/* --------------------------------- BR/EDR ----------------------------- */

#if !defined( DLT_BLUETOOTH_BREDR_BB )
#define DLT_BLUETOOTH_BREDR_BB 255
#endif
typedef struct __attribute__((packed)) _pcap_bluetooth_bredr_bb_header {
        uint8_t rf_channel;
        int8_t signal_power;
        int8_t noise_power;
        uint8_t access_code_offenses;
        uint8_t payload_transport_rate;
        uint8_t corrected_header_bits;
        int16_t corrected_payload_bits;
        uint32_t lap;
        uint32_t ref_lap_uap;
        uint32_t bt_header;
        uint16_t flags;
        uint8_t  br_edr_payload[0];
} pcap_bluetooth_bredr_bb_header;

#define BREDR_DEWHITENED        0x0001
#define BREDR_SIGPOWER_VALID    0x0002
#define BREDR_NOISEPOWER_VALID  0x0004
#define BREDR_PAYLOAD_DECRYPTED 0x0008
#define BREDR_REFLAP_VALID      0x0010
#define BREDR_PAYLOAD_PRESENT   0x0020
#define BREDR_CHANNEL_ALIASED   0x0040
#define BREDR_REFUAP_VALID      0x0080
#define BREDR_HEC_CHECKED       0x0100
#define BREDR_HEC_VALID         0x0200
#define BREDR_CRC_CHECKED       0x0400
#define BREDR_CRC_VALID         0x0800
#define BREDR_MIC_CHECKED       0x1000
#define BREDR_MIC_VALID         0x2000

#define BREDR_MAX_PAYLOAD       400

/* --------------------------------- Low Energy ---------------------------- */

#if !defined( DLT_BLUETOOTH_LE_LL_WITH_PHDR )
#define DLT_BLUETOOTH_LE_LL_WITH_PHDR 256
#endif
typedef struct __attribute__((packed)) _pcap_bluetooth_le_ll_header {
        uint8_t rf_channel;
        int8_t signal_power;
        int8_t noise_power;
        uint8_t access_address_offenses;
        uint32_t ref_access_address;
        uint16_t flags;
        uint8_t le_packet[0];
} pcap_bluetooth_le_ll_header;

#define LE_DEWHITENED        0x0001
#define LE_SIGPOWER_VALID    0x0002
#define LE_NOISEPOWER_VALID  0x0004
#define LE_PACKET_DECRYPTED  0x0008
#define LE_REF_AA_VALID      0x0010
#define LE_AA_OFFENSES_VALID 0x0020
#define LE_CHANNEL_ALIASED   0x0040
#define LE_CRC_CHECKED       0x0400
#define LE_CRC_VALID         0x0800
#define LE_MIC_CHECKED       0x1000
#define LE_MIC_VALID         0x2000

#define LE_MAX_PAYLOAD       48

#endif /* PCAP_COMMON_DOT_H */