static bool setup_conn_req(struct bnep_frame *bnep_frame, uint8_t indent)
{
struct l2cap_frame *frame = &bnep_frame->l2cap_frame;
uint8_t uuid_size;
uint32_t src_uuid = 0, dst_uuid = 0;
if (!l2cap_frame_get_u8(frame, &uuid_size))
return false;
print_field("%*cSize: 0x%02x ", indent, ' ', uuid_size);
switch (uuid_size) {
case 2:
if (!l2cap_frame_get_be16(frame, (uint16_t *) &dst_uuid))
return false;
if (!l2cap_frame_get_be16(frame, (uint16_t *) &src_uuid))
return false;
break;
case 4:
if (!l2cap_frame_get_be32(frame, &dst_uuid))
return false;
if (!l2cap_frame_get_be32(frame, &src_uuid))
return false;
break;
case 16:
if (!l2cap_frame_get_be32(frame, &dst_uuid))
return false;
l2cap_frame_pull(frame, frame, 12);
if (!l2cap_frame_get_be32(frame, &src_uuid))
return false;
l2cap_frame_pull(frame, frame, 12);
break;
default:
l2cap_frame_pull(frame, frame, (uuid_size * 2));
return true;
}
print_field("%*cDst: 0x%x(%s)", indent, ' ', dst_uuid,
bt_uuid32_to_str(dst_uuid));
print_field("%*cSrc: 0x%x(%s)", indent, ' ', src_uuid,
bt_uuid32_to_str(src_uuid));
return true;
}
void avctp_packet(const struct l2cap_frame *frame)
{
struct l2cap_frame *l2cap_frame;
struct avctp_frame avctp_frame;
const char *pdu_color;
l2cap_frame_pull(&avctp_frame.l2cap_frame, frame, 0);
l2cap_frame = &avctp_frame.l2cap_frame;
if (!l2cap_frame_get_u8(l2cap_frame, &avctp_frame.hdr) ||
!l2cap_frame_get_be16(l2cap_frame, &avctp_frame.pid)) {
print_text(COLOR_ERROR, "frame too short");
packet_hexdump(frame->data, frame->size);
return;
}
if (frame->in)
pdu_color = COLOR_MAGENTA;
else
pdu_color = COLOR_BLUE;
print_indent(6, pdu_color, "AVCTP", "", COLOR_OFF,
" %s: %s: type 0x%02x label %d PID 0x%04x",
frame->psm == 23 ? "Control" : "Browsing",
avctp_frame.hdr & 0x02 ? "Response" : "Command",
avctp_frame.hdr & 0x0c, avctp_frame.hdr >> 4,
avctp_frame.pid);
if (avctp_frame.pid == 0x110e || avctp_frame.pid == 0x110c)
avrcp_packet(&avctp_frame);
else
packet_hexdump(frame->data, frame->size);
}
void sdp_packet(const struct l2cap_frame *frame)
{
uint8_t pdu;
uint16_t tid, plen;
struct l2cap_frame sdp_frame;
struct tid_data *tid_info;
const struct sdp_data *sdp_data = NULL;
const char *pdu_color, *pdu_str;
int i;
l2cap_frame_pull(&sdp_frame, frame, 0);
if (!l2cap_frame_get_u8(&sdp_frame, &pdu) ||
!l2cap_frame_get_be16(&sdp_frame, &tid) ||
!l2cap_frame_get_be16(&sdp_frame, &plen)) {
print_text(COLOR_ERROR, "frame too short");
packet_hexdump(frame->data, frame->size);
return;
}
if (sdp_frame.size != plen) {
print_text(COLOR_ERROR, "invalid frame size");
packet_hexdump(sdp_frame.data, sdp_frame.size);
return;
}
for (i = 0; sdp_table[i].str; i++) {
if (sdp_table[i].pdu == pdu) {
sdp_data = &sdp_table[i];
break;
}
}
if (sdp_data) {
if (sdp_data->func) {
if (frame->in)
pdu_color = COLOR_MAGENTA;
else
pdu_color = COLOR_BLUE;
} else
pdu_color = COLOR_WHITE_BG;
pdu_str = sdp_data->str;
} else {
pdu_color = COLOR_WHITE_BG;
pdu_str = "Unknown";
}
print_indent(6, pdu_color, "SDP: ", pdu_str, COLOR_OFF,
" (0x%2.2x) tid %d len %d", pdu, tid, plen);
tid_info = get_tid(tid, frame->chan);
if (!sdp_data || !sdp_data->func || !tid_info) {
packet_hexdump(sdp_frame.data, sdp_frame.size);
return;
}
sdp_data->func(&sdp_frame, tid_info);
}
static bool bnep_control(struct bnep_frame *bnep_frame,
uint8_t indent, int hdr_len)
{
uint8_t ctype;
struct l2cap_frame *frame = &bnep_frame->l2cap_frame;
const struct bnep_control_data *bnep_control_data = NULL;
const char *type_str;
int i;
if (!l2cap_frame_get_u8(frame, &ctype))
return false;
for (i = 0; bnep_control_table[i].str; i++) {
if (bnep_control_table[i].type == ctype) {
bnep_control_data = &bnep_control_table[i];
break;
}
}
if (bnep_control_data)
type_str = bnep_control_data->str;
else
type_str = "Unknown control type";
print_field("%*c%s (0x%02x) ", indent, ' ', type_str, ctype);
if (!bnep_control_data || !bnep_control_data->func) {
packet_hexdump(frame->data, hdr_len - 1);
l2cap_frame_pull(frame, frame, hdr_len - 1);
goto done;
}
if (!bnep_control_data->func(bnep_frame, indent+2))
return false;
done:
return true;
}
static bool bnep_eval_extension(struct bnep_frame *bnep_frame, uint8_t indent)
{
struct l2cap_frame *frame = &bnep_frame->l2cap_frame;
uint8_t type, length;
int extension;
if (!l2cap_frame_get_u8(frame, &type))
return false;
if (!l2cap_frame_get_u8(frame, &length))
return false;
extension = GET_EXTENSION(type);
type = GET_PKT_TYPE(type);
switch (type) {
case BNEP_EXTENSION_CONTROL:
print_field("%*cExt Control(0x%02x|%s) len 0x%02x", indent,
' ', type, extension ? "1" : "0", length);
if (!bnep_control(bnep_frame, indent+2, length))
return false;
break;
default:
print_field("%*cExt Unknown(0x%02x|%s) len 0x%02x", indent,
' ', type, extension ? "1" : "0", length);
packet_hexdump(frame->data, length);
l2cap_frame_pull(frame, frame, length);
}
if (extension)
if (!bnep_eval_extension(bnep_frame, indent))
return false;
return true;
}
void rfcomm_packet(const struct l2cap_frame *frame)
{
uint8_t ctype, length, ex_length, indent = 1;
const char *frame_str, *frame_color;
struct l2cap_frame *l2cap_frame, tmp_frame;
struct rfcomm_frame rfcomm_frame;
struct rfcomm_lhdr hdr;
const struct rfcomm_data *rfcomm_data = NULL;
int i;
l2cap_frame_pull(&rfcomm_frame.l2cap_frame, frame, 0);
l2cap_frame = &rfcomm_frame.l2cap_frame;
if (frame->size < 4)
goto fail;
if (!l2cap_frame_get_u8(l2cap_frame, &hdr.address) ||
!l2cap_frame_get_u8(l2cap_frame, &hdr.control) ||
!l2cap_frame_get_u8(l2cap_frame, &length))
goto fail;
/* length maybe 1 or 2 octets */
if (RFCOMM_TEST_EA(length))
hdr.length = (uint16_t) GET_LEN8(length);
else {
if (!l2cap_frame_get_u8(l2cap_frame, &ex_length))
goto fail;
hdr.length = ((uint16_t)length << 8) | ex_length;
hdr.length = GET_LEN16(hdr.length);
}
l2cap_frame_pull(&tmp_frame, l2cap_frame, l2cap_frame->size-1);
if(!l2cap_frame_get_u8(&tmp_frame, &hdr.fcs))
goto fail;
/* Decoding frame type */
ctype = RFCOMM_GET_TYPE(hdr.control);
for (i = 0; rfcomm_table[i].str; i++) {
if (rfcomm_table[i].frame == ctype) {
rfcomm_data = &rfcomm_table[i];
break;
}
}
if (rfcomm_data) {
if (frame->in)
frame_color = COLOR_MAGENTA;
else
frame_color = COLOR_BLUE;
frame_str = rfcomm_data->str;
} else {
frame_color = COLOR_WHITE_BG;
frame_str = "Unknown";
}
if (!rfcomm_data) {
packet_hexdump(frame->data, frame->size);
return;
}
print_indent(6, frame_color, "RFCOMM: ", frame_str, COLOR_OFF,
"(0x%2.2x)", ctype);
rfcomm_frame.hdr = hdr;
print_rfcomm_hdr(&rfcomm_frame, indent);
/* UIH frame */
if (ctype == 0xef)
if (!uih_frame(&rfcomm_frame, indent))
goto fail;
return;
fail:
print_text(COLOR_ERROR, "Frame too short");
packet_hexdump(frame->data, frame->size);
return;
}
void bnep_packet(const struct l2cap_frame *frame)
{
uint8_t type, indent = 1;
struct bnep_frame bnep_frame;
struct l2cap_frame *l2cap_frame;
const struct bnep_data *bnep_data = NULL;
const char *pdu_color, *pdu_str;
int i;
l2cap_frame_pull(&bnep_frame.l2cap_frame, frame, 0);
l2cap_frame = &bnep_frame.l2cap_frame;
if (!l2cap_frame_get_u8(l2cap_frame, &type))
goto fail;
bnep_frame.extension = GET_EXTENSION(type);
bnep_frame.type = GET_PKT_TYPE(type);
for (i = 0; bnep_table[i].str; i++) {
if (bnep_table[i].type == bnep_frame.type) {
bnep_data = &bnep_table[i];
break;
}
}
if (bnep_data) {
if (bnep_data->func) {
if (frame->in)
pdu_color = COLOR_MAGENTA;
else
pdu_color = COLOR_BLUE;
} else
pdu_color = COLOR_WHITE_BG;
pdu_str = bnep_data->str;
} else {
pdu_color = COLOR_WHITE_BG;
pdu_str = "Unknown packet type";
}
print_indent(6, pdu_color, "BNEP: ", pdu_str, COLOR_OFF,
" (0x%02x|%s)", bnep_frame.type,
bnep_frame.extension ? "1" : "0");
if (!bnep_data || !bnep_data->func) {
packet_hexdump(l2cap_frame->data, l2cap_frame->size);
return;
}
if (!bnep_data->func(&bnep_frame, indent, -1))
goto fail;
/* Extension info */
if (bnep_frame.extension)
if (!bnep_eval_extension(&bnep_frame, indent+2))
goto fail;
/* Control packet => No payload info */
if (bnep_frame.type == BNEP_CONTROL)
return;
/* TODO: Handle BNEP IP packet */
packet_hexdump(l2cap_frame->data, l2cap_frame->size);
return;
fail:
print_text(COLOR_ERROR, "frame too short");
packet_hexdump(frame->data, frame->size);
}
