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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2011-2014 Intel Corporation
* Copyright (C) 2002-2010 Marcel Holtmann <marcel@holtmann.org>
*
*
* 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>
#include <stdbool.h>
struct l2cap_frame {
uint16_t index;
bool in;
uint16_t handle;
uint8_t ident;
uint16_t cid;
uint16_t psm;
uint16_t chan;
uint8_t mode;
uint8_t seq_num;
const void *data;
uint16_t size;
};
static inline void l2cap_frame_pull(struct l2cap_frame *frame,
const struct l2cap_frame *source, uint16_t len)
{
if (frame != source) {
frame->index = source->index;
frame->in = source->in;
frame->handle = source->handle;
frame->ident = source->ident;
frame->cid = source->cid;
frame->psm = source->psm;
frame->chan = source->chan;
frame->mode = source->mode;
}
frame->data = source->data + len;
frame->size = source->size - len;
}
static inline bool l2cap_frame_get_u8(struct l2cap_frame *frame, uint8_t *value)
{
if (frame->size < sizeof(*value))
return false;
if (value)
*value = *((uint8_t *) frame->data);
l2cap_frame_pull(frame, frame, sizeof(*value));
return true;
}
static inline bool l2cap_frame_get_be16(struct l2cap_frame *frame,
uint16_t *value)
{
if (frame->size < sizeof(*value))
return false;
if (value)
*value = get_be16(frame->data);
l2cap_frame_pull(frame, frame, sizeof(*value));
return true;
}
static inline bool l2cap_frame_get_le16(struct l2cap_frame *frame,
uint16_t *value)
{
if (frame->size < sizeof(*value))
return false;
if (value)
*value = get_le16(frame->data);
l2cap_frame_pull(frame, frame, sizeof(*value));
return true;
}
static inline bool l2cap_frame_get_be32(struct l2cap_frame *frame,
uint32_t *value)
{
if (frame->size < sizeof(*value))
return false;
if (value)
*value = get_be32(frame->data);
l2cap_frame_pull(frame, frame, sizeof(*value));
return true;
}
static inline bool l2cap_frame_get_le32(struct l2cap_frame *frame,
uint32_t *value)
{
if (frame->size < sizeof(*value))
return false;
if (value)
*value = get_le32(frame->data);
l2cap_frame_pull(frame, frame, sizeof(*value));
return true;
}
static inline bool l2cap_frame_get_be64(struct l2cap_frame *frame,
uint64_t *value)
{
if (frame->size < sizeof(*value))
return false;
if (value)
*value = get_be64(frame->data);
l2cap_frame_pull(frame, frame, sizeof(*value));
return true;
}
static inline bool l2cap_frame_get_le64(struct l2cap_frame *frame,
uint64_t *value)
{
if (frame->size < sizeof(*value))
return false;
if (value)
*value = get_le64(frame->data);
l2cap_frame_pull(frame, frame, sizeof(*value));
return true;
}
static inline bool l2cap_frame_get_be128(struct l2cap_frame *frame,
uint64_t *lvalue, uint64_t *rvalue)
{
if (frame->size < (sizeof(*lvalue) + sizeof(*rvalue)))
return false;
if (lvalue && rvalue) {
*lvalue = get_be64(frame->data);
*rvalue = get_be64(frame->data);
}
l2cap_frame_pull(frame, frame, (sizeof(*lvalue) + sizeof(*rvalue)));
return true;
}
void l2cap_packet(uint16_t index, bool in, uint16_t handle, uint8_t flags,
const void *data, uint16_t size);
void rfcomm_packet(const struct l2cap_frame *frame);
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