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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2011-2014 Intel Corporation
* Copyright (C) 2002-2010 Marcel Holtmann <marcel@holtmann.org>
*
*
*/
#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;
};
void l2cap_frame_init(struct l2cap_frame *frame, uint16_t index, bool in,
uint16_t handle, uint8_t ident,
uint16_t cid, uint16_t psm,
const void *data, uint16_t size);
static inline void l2cap_frame_clone_size(struct l2cap_frame *frame,
const struct l2cap_frame *source,
uint16_t size)
{
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;
frame->size = size;
}
}
static inline void l2cap_frame_clone(struct l2cap_frame *frame,
const struct l2cap_frame *source)
{
l2cap_frame_clone_size(frame, source, source->size);
}
static inline void *l2cap_frame_pull(struct l2cap_frame *frame,
const struct l2cap_frame *source, uint16_t len)
{
void *data;
l2cap_frame_clone(frame, source);
if (source->size < len)
return NULL;
data = (void *)frame->data;
frame->data = source->data + len;
frame->size = source->size - len;
return data;
}
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_print_u8(struct l2cap_frame *frame,
const char *label)
{
uint8_t u8;
if (!l2cap_frame_get_u8(frame, &u8)) {
print_text(COLOR_ERROR, "%s: invalid size", label);
return false;
}
print_field("%s: 0x%2.2x", label, u8);
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_print_be16(struct l2cap_frame *frame,
const char *label)
{
uint16_t u16;
if (!l2cap_frame_get_be16(frame, &u16)) {
print_text(COLOR_ERROR, "%s: invalid size", label);
return false;
}
print_field("%s: 0x%4.4x", label, u16);
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_print_le16(struct l2cap_frame *frame,
const char *label)
{
uint16_t u16;
if (!l2cap_frame_get_le16(frame, &u16)) {
print_text(COLOR_ERROR, "%s: invalid size", label);
return false;
}
print_field("%s: 0x%4.4x", label, u16);
return true;
}
static inline bool l2cap_frame_get_be24(struct l2cap_frame *frame,
uint32_t *value)
{
if (frame->size < sizeof(uint24_t))
return false;
if (value)
*value = get_be24(frame->data);
l2cap_frame_pull(frame, frame, sizeof(uint24_t));
return true;
}
static inline bool l2cap_frame_print_be24(struct l2cap_frame *frame,
const char *label)
{
uint32_t u24;
if (!l2cap_frame_get_be24(frame, &u24)) {
print_text(COLOR_ERROR, "%s: invalid size", label);
return false;
}
print_field("%s: 0x%6.6x", label, u24);
return true;
}
static inline bool l2cap_frame_get_le24(struct l2cap_frame *frame,
uint32_t *value)
{
if (frame->size < sizeof(uint24_t))
return false;
if (value)
*value = get_le24(frame->data);
l2cap_frame_pull(frame, frame, sizeof(uint24_t));
return true;
}
static inline bool l2cap_frame_print_le24(struct l2cap_frame *frame,
const char *label)
{
uint32_t u24;
if (!l2cap_frame_get_le24(frame, &u24)) {
print_text(COLOR_ERROR, "%s: invalid size", label);
return false;
}
print_field("%s: 0x%6.6x", label, u24);
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_print_be32(struct l2cap_frame *frame,
const char *label)
{
uint32_t u32;
if (!l2cap_frame_get_be32(frame, &u32)) {
print_text(COLOR_ERROR, "%s: invalid size", label);
return false;
}
print_field("%s: 0x%8.8x", label, u32);
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_print_le32(struct l2cap_frame *frame,
const char *label)
{
uint32_t u32;
if (!l2cap_frame_get_le32(frame, &u32)) {
print_text(COLOR_ERROR, "%s: invalid size", label);
return false;
}
print_field("%s: 0x%8.8x", label, u32);
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_print_be64(struct l2cap_frame *frame,
const char *label)
{
uint64_t u64;
if (!l2cap_frame_get_be64(frame, &u64)) {
print_text(COLOR_ERROR, "%s: invalid size", label);
return false;
}
print_field("%s: 0x%" PRIx64, label, u64);
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_print_le64(struct l2cap_frame *frame,
const char *label)
{
uint64_t u64;
if (!l2cap_frame_get_le64(frame, &u64)) {
print_text(COLOR_ERROR, "%s: invalid size", label);
return false;
}
print_field("%s: 0x%" PRIx64, label, u64);
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_frame(uint16_t index, bool in, uint16_t handle, uint16_t cid,
uint16_t psm, const void *data, uint16_t size);
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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