2006-05-27 01:52:02 +00:00
|
|
|
/* old code to do unescaping of serial port data and reassembly of ppp frames
|
|
|
|
* are left in but ifdeffed out.
|
|
|
|
* This code should be rewritten when there are examples of ppp over rfcomm
|
|
|
|
* captures made available to test with.
|
|
|
|
* the old code is left in to show an example of what kind of operations need
|
|
|
|
* to be done in the new (yet to be written) code.
|
|
|
|
*
|
|
|
|
* For now all this is decoded just as "data".
|
|
|
|
* It might be enough to just check
|
2008-07-09 01:30:30 +00:00
|
|
|
* If the first byte of payload is the 0x7e delimiter and if so just
|
2006-07-20 17:45:52 +00:00
|
|
|
* de escape it into a ep_alloc() buffer and then pass it to the ppp
|
2006-05-27 01:52:02 +00:00
|
|
|
* dissector.
|
|
|
|
*/
|
|
|
|
|
|
|
|
/* packet-btrfcomm.c
|
|
|
|
* Routines for Bluetooth RFCOMM protocol dissection
|
|
|
|
* Copyright 2002, Wolfgang Hansmann <hansmann@cs.uni-bonn.de>
|
|
|
|
*
|
|
|
|
* Refactored for wireshark checkin
|
|
|
|
* Ronnie Sahlberg 2006
|
|
|
|
*
|
|
|
|
* $Id$
|
|
|
|
*
|
2006-05-28 19:49:07 +00:00
|
|
|
* Wireshark - Network traffic analyzer
|
|
|
|
* By Gerald Combs <gerald@wireshark.org>
|
2006-05-27 01:52:02 +00:00
|
|
|
* Copyright 1998 Gerald Combs
|
|
|
|
*
|
|
|
|
* 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
|
|
|
|
* of the License, or (at your option) any later version.
|
2006-07-20 17:45:52 +00:00
|
|
|
*
|
2006-05-27 01:52:02 +00:00
|
|
|
* 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.
|
2006-07-20 17:45:52 +00:00
|
|
|
*
|
2006-05-27 01:52:02 +00:00
|
|
|
* You should have received a copy of the GNU General Public License
|
|
|
|
* along with this program; if not, write to the Free Software
|
|
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
|
|
# include "config.h"
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#include <glib.h>
|
|
|
|
|
|
|
|
#include <epan/packet.h>
|
|
|
|
#include <epan/value_string.h>
|
|
|
|
#include <etypes.h>
|
|
|
|
#include <epan/emem.h>
|
2009-11-12 01:55:06 +00:00
|
|
|
#include <epan/expert.h>
|
2006-05-27 01:52:02 +00:00
|
|
|
#include "packet-btl2cap.h"
|
|
|
|
|
|
|
|
static int hf_pf = -1;
|
|
|
|
static int hf_ea = -1;
|
|
|
|
static int hf_len = -1;
|
|
|
|
static int hf_frame_type = -1;
|
|
|
|
static int hf_cr = -1;
|
|
|
|
static int hf_dlci = -1;
|
|
|
|
static int hf_priority = -1;
|
|
|
|
static int hf_error_recovery_mode = -1;
|
|
|
|
static int hf_max_frame_size = -1;
|
|
|
|
static int hf_max_retrans = -1;
|
|
|
|
static int hf_fc_credits = -1;
|
|
|
|
|
|
|
|
static int hf_pn_i14 = -1;
|
|
|
|
static int hf_pn_c14 = -1;
|
|
|
|
|
|
|
|
static int hf_mcc_len = -1;
|
|
|
|
static int hf_mcc_ea = -1;
|
|
|
|
static int hf_mcc_cr = -1;
|
|
|
|
static int hf_mcc_cmd = -1;
|
|
|
|
|
|
|
|
static int hf_msc_fc = -1;
|
|
|
|
static int hf_msc_rtc = -1;
|
|
|
|
static int hf_msc_rtr = -1;
|
|
|
|
static int hf_msc_ic = -1;
|
|
|
|
static int hf_msc_dv = -1;
|
|
|
|
static int hf_msc_l = -1;
|
|
|
|
|
|
|
|
static int hf_fcs = -1;
|
|
|
|
|
|
|
|
|
|
|
|
/* Initialize the protocol and registered fields */
|
|
|
|
static int proto_btrfcomm = -1;
|
|
|
|
|
|
|
|
|
|
|
|
/* Initialize the subtree pointers */
|
|
|
|
|
|
|
|
static gint ett_btrfcomm = -1;
|
|
|
|
static gint ett_btrfcomm_ctrl = -1;
|
|
|
|
static gint ett_addr = -1;
|
|
|
|
static gint ett_control = -1;
|
|
|
|
static gint ett_mcc = -1;
|
|
|
|
static gint ett_ctrl_pn_ci = -1;
|
|
|
|
static gint ett_ctrl_pn_v24 = -1;
|
|
|
|
|
|
|
|
|
2006-08-14 08:29:29 +00:00
|
|
|
static emem_tree_t *dlci_table=NULL;
|
2006-05-27 01:52:02 +00:00
|
|
|
|
|
|
|
typedef struct _dlci_stream_t {
|
|
|
|
int len;
|
|
|
|
int current;
|
|
|
|
int is_escaped;
|
|
|
|
int mode;
|
|
|
|
guint8 *stream_buf;
|
|
|
|
} dlci_stream_t;
|
|
|
|
|
|
|
|
typedef struct _dlci_state_t {
|
|
|
|
char do_credit_fc;
|
|
|
|
dlci_stream_t direction[2];
|
|
|
|
} dlci_state_t;
|
|
|
|
|
|
|
|
static dissector_handle_t data_handle;
|
|
|
|
static dissector_handle_t ppp_handle;
|
|
|
|
|
|
|
|
static const value_string vs_ctl_pn_i[] = {
|
|
|
|
{0x0, "use UIH Frames"},
|
|
|
|
/* specified by 07.10, but not used by RFCOMM
|
|
|
|
{0x1, "use UI Frames"},
|
|
|
|
{0x2, "use I Frames"},
|
|
|
|
*/
|
|
|
|
{0, NULL}
|
|
|
|
};
|
|
|
|
|
|
|
|
static const value_string vs_ctl_pn_cl[] = {
|
|
|
|
|
|
|
|
{0x0, "no credit based flow control scheme"},
|
|
|
|
{0xe, "support of credit based flow control scheme (resp)"},
|
|
|
|
{0xf, "support of credit based flow control scheme (req)"},
|
2006-07-20 17:45:52 +00:00
|
|
|
/* specified by 07.10. Redefined by RFCOMM
|
2006-05-27 01:52:02 +00:00
|
|
|
{0x0, "type 1 (unstructured octet stream)"},
|
|
|
|
{0x1, "type 2 (unstructured octet stream with flow control)"},
|
|
|
|
{0x2, "type 3 (uninterruptible framed data)"},
|
|
|
|
{0x3, "type 4 (interruptible framed data)"},
|
|
|
|
*/
|
|
|
|
{0, NULL}
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
static const value_string vs_frame_type[] = {
|
|
|
|
/* masked 0xef */
|
|
|
|
{0x2f, "Set Asynchronous Balanced Mode (SABM)"},
|
|
|
|
{0x63, "Unnumbered Acknowledgement (UA)"},
|
|
|
|
{0x0f, "Disconnected Mode (DM)"},
|
|
|
|
{0x43, "Disconnect (DISC)"},
|
|
|
|
{0xef, "Unnumbered Information with Header check (UIH)"},
|
|
|
|
/* specified by 07.10, but not used by RFCOMM
|
|
|
|
{0x03, "Unnumbered Information (UI)"},
|
|
|
|
*/
|
|
|
|
{0, NULL}
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
static const value_string vs_frame_type_short[] = {
|
|
|
|
/* masked 0xef */
|
|
|
|
{0x2f, "SABM"},
|
|
|
|
{0x63, "UA"},
|
|
|
|
{0x0f, "DM"},
|
|
|
|
{0x43, "DISC"},
|
|
|
|
{0xef, "UIH"},
|
|
|
|
/* specified by 07.10, but not used by RFCOMM
|
|
|
|
{0x03, "UI"},
|
|
|
|
*/
|
|
|
|
{0, NULL}
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
static const value_string vs_ctl[] = {
|
|
|
|
/* masked 0xfc */
|
|
|
|
{0x20, "DLC parameter negotiation (PN)"},
|
|
|
|
{0x08, "Test Command (Test)"},
|
|
|
|
{0x28, "Flow Control On Command (FCon)"},
|
|
|
|
{0x18, "Flow Control Off Command (FCoff)"},
|
|
|
|
{0x38, "Modem Status Command (MSC)"},
|
|
|
|
{0x04, "Non Supported Command Response (NSC)"},
|
|
|
|
{0x24, "Remote Port Negotiation Command (RPN)"},
|
|
|
|
{0x14, "Remote Line Status Command (RLS)"},
|
|
|
|
/* Specified by 07.10, but not used by RFCOMM
|
|
|
|
{0x10, "Power Saving Control (PSC)"},
|
|
|
|
{0x30, "Multiplexer close down (CLD)"},
|
|
|
|
{0x34, "Service Negotiation Command (SNC)"},
|
|
|
|
*/
|
2006-07-20 17:45:52 +00:00
|
|
|
/* old
|
2006-05-27 01:52:02 +00:00
|
|
|
{0x80, "DLC parameter negotiation (PN)"},
|
|
|
|
{0x20, "Test Command (Test)"},
|
|
|
|
{0xa0, "Flow Control On Command (FCon)"},
|
|
|
|
{0x60, "Flow Control Off Command (FCoff)"},
|
|
|
|
{0xe0, "Modem Status Command (MSC)"},
|
|
|
|
{0x10, "Non Supported Command Response (NSC)"},
|
|
|
|
{0x90, "Remote Port Negotiation Command (RPN)"},
|
|
|
|
{0x50, "Remote Line Status Command (RLS)"},
|
|
|
|
{0x40, "Power Saving Control (PSC)"},
|
|
|
|
{0xc0, "Multiplexer close down (CLD)"},
|
|
|
|
{0xd0, "Service Negotiation Command (SNC)"},
|
|
|
|
*/
|
|
|
|
{0x0, NULL}
|
|
|
|
};
|
|
|
|
|
|
|
|
static const value_string vs_ea[] = {
|
|
|
|
{1, "Last field octet"},
|
|
|
|
{0, "More field octets following"},
|
|
|
|
{0, NULL}
|
|
|
|
};
|
|
|
|
|
|
|
|
static const value_string vs_cr[] = {
|
2006-07-20 17:45:52 +00:00
|
|
|
{1, "Command"},
|
2006-05-27 01:52:02 +00:00
|
|
|
{0, "Response"},
|
|
|
|
{0, NULL}
|
|
|
|
};
|
|
|
|
|
|
|
|
|
2006-07-20 17:45:52 +00:00
|
|
|
static int
|
2006-05-27 01:52:02 +00:00
|
|
|
get_le_multi_byte_value(tvbuff_t *tvb, int offset, proto_tree *tree, guint32 *val_ptr, int hf_index)
|
|
|
|
{
|
|
|
|
guint8 byte, bc = 0;
|
|
|
|
guint32 val = 0;
|
|
|
|
int start_offset=offset;
|
|
|
|
|
|
|
|
do{
|
|
|
|
byte = tvb_get_guint8(tvb, offset);
|
|
|
|
offset++;
|
|
|
|
val |= ((byte>>1)&0xff) << (bc++ * 7);
|
|
|
|
}while((byte & 0x1)==0);
|
|
|
|
|
|
|
|
*val_ptr = val;
|
|
|
|
|
|
|
|
if(hf_index>0){
|
|
|
|
proto_tree_add_uint(tree, hf_index, tvb, start_offset, offset-start_offset, val);
|
|
|
|
}
|
|
|
|
|
|
|
|
return offset;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_ctrl_pn(packet_info *pinfo, proto_tree *t, tvbuff_t *tvb, int offset, int cr_flag)
|
|
|
|
{
|
|
|
|
proto_tree *st;
|
|
|
|
proto_item *ti;
|
|
|
|
int dlci;
|
|
|
|
int cl;
|
|
|
|
dlci_state_t *dlci_state;
|
|
|
|
guint8 flags;
|
|
|
|
|
|
|
|
/* dlci */
|
|
|
|
dlci=tvb_get_guint8(tvb, offset)&0x3f;
|
|
|
|
proto_tree_add_uint(t, hf_dlci, tvb, offset, 1, dlci);
|
|
|
|
offset++;
|
|
|
|
|
|
|
|
/* cl */
|
|
|
|
flags=tvb_get_guint8(tvb, offset);
|
|
|
|
cl=flags&0xf0;
|
|
|
|
|
|
|
|
ti = proto_tree_add_text(t, tvb, offset, 1, "I1-I4: 0x%x, C1-C4: 0x%x", flags&0xf, (flags>>4)&0xf);
|
|
|
|
st = proto_item_add_subtree(ti, ett_ctrl_pn_ci);
|
|
|
|
|
|
|
|
proto_tree_add_item(st, hf_pn_c14, tvb, offset, 1, TRUE);
|
|
|
|
proto_tree_add_item(st, hf_pn_i14, tvb, offset, 1, TRUE);
|
|
|
|
offset++;
|
|
|
|
|
|
|
|
/* priority */
|
|
|
|
proto_tree_add_item(t, hf_priority, tvb, offset, 1, TRUE);
|
|
|
|
offset++;
|
|
|
|
|
|
|
|
/* Ack timer */
|
|
|
|
proto_tree_add_text(t, tvb, offset, 1, "Acknowledgement timer (T1): %d ms", (guint32)tvb_get_guint8(tvb, offset) * 100);
|
|
|
|
offset++;
|
|
|
|
|
|
|
|
/* max frame size */
|
|
|
|
proto_tree_add_item(t, hf_max_frame_size, tvb, offset, 2, TRUE);
|
|
|
|
offset+=2;
|
|
|
|
|
|
|
|
/* max retrans */
|
|
|
|
proto_tree_add_item(t, hf_max_retrans, tvb, offset, 1, TRUE);
|
|
|
|
offset++;
|
|
|
|
|
|
|
|
/* error recovery mode */
|
|
|
|
proto_tree_add_item(t, hf_error_recovery_mode, tvb, offset, 1, TRUE);
|
|
|
|
offset++;
|
|
|
|
|
|
|
|
if(!pinfo->fd->flags.visited){
|
|
|
|
dlci_state=se_tree_lookup32(dlci_table, dlci);
|
|
|
|
if(!dlci_state){
|
2008-10-02 04:55:51 +00:00
|
|
|
dlci_state=se_alloc0(sizeof(dlci_state_t));
|
2006-05-27 01:52:02 +00:00
|
|
|
dlci_state->direction[0].current=-1;
|
|
|
|
dlci_state->direction[1].current=-1;
|
|
|
|
se_tree_insert32(dlci_table, dlci, dlci_state);
|
|
|
|
}
|
2006-07-20 17:45:52 +00:00
|
|
|
|
2006-05-27 01:52:02 +00:00
|
|
|
if(!cl){
|
|
|
|
/* sender does not do credit based flow control */
|
|
|
|
dlci_state->do_credit_fc = 0;
|
|
|
|
} else if(cr_flag && (cl==0xf0)){
|
|
|
|
/* sender requests to use credit based flow control */
|
2006-07-20 17:45:52 +00:00
|
|
|
dlci_state->do_credit_fc |= 1;
|
2006-05-27 01:52:02 +00:00
|
|
|
} else if((!cr_flag) && (cl==0xe0)){
|
2006-07-20 17:45:52 +00:00
|
|
|
/* receiver also knows how to handle credit based
|
2006-05-27 01:52:02 +00:00
|
|
|
flow control */
|
|
|
|
dlci_state->do_credit_fc |= 2;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return offset;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#ifdef REMOVED
|
|
|
|
/* to serve as inspiration when implementing ppp over rfcomm */
|
|
|
|
static void *my_malloc(int size) {
|
|
|
|
|
2009-03-15 20:47:12 +00:00
|
|
|
/* void *p = calloc(size, 1); */
|
2006-05-27 01:52:02 +00:00
|
|
|
|
|
|
|
if (!p) {
|
2009-03-15 20:47:12 +00:00
|
|
|
/* perror("calloc()"); */
|
2008-06-27 16:07:21 +00:00
|
|
|
/* exit(1); */
|
2006-05-27 01:52:02 +00:00
|
|
|
}
|
|
|
|
return p;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2006-07-20 17:45:52 +00:00
|
|
|
static void stream_buf_init(dlci_stream *s)
|
2006-05-27 01:52:02 +00:00
|
|
|
{
|
|
|
|
s->len = DEFAULT_STREAM_BUF_SIZE;
|
|
|
|
s->mode = 0;
|
|
|
|
s->is_escaped = 0;
|
|
|
|
s->current = 0;
|
|
|
|
s->stream_buf = my_malloc(DEFAULT_STREAM_BUF_SIZE);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2006-07-20 17:45:52 +00:00
|
|
|
static void stream_buf_append(rfcomm_packet_state *rps,
|
|
|
|
dlci_stream *ds, tvbuff_t *tvb,
|
2006-05-27 01:52:02 +00:00
|
|
|
int off, int len) {
|
|
|
|
|
|
|
|
const guint8 *buf = tvb_get_ptr(tvb, off, len);
|
|
|
|
int bytes_left = len, curr = 0;
|
|
|
|
|
|
|
|
if (!ds->stream_buf)
|
|
|
|
stream_buf_init(ds);
|
|
|
|
|
|
|
|
for (bytes_left = len; bytes_left > 0 && ds->current < ds->len; bytes_left--) {
|
|
|
|
|
|
|
|
/* fetch next byte */
|
|
|
|
|
|
|
|
guint8 byte = buf[curr++];
|
|
|
|
|
|
|
|
/* eventually check mode here */
|
|
|
|
|
|
|
|
if (byte == 0x7e) {
|
|
|
|
if (ds->current == 0)
|
2008-07-09 01:30:30 +00:00
|
|
|
continue; /* was start delimiter */
|
2006-05-27 01:52:02 +00:00
|
|
|
|
2008-07-09 01:30:30 +00:00
|
|
|
/* end delimiter*/
|
2006-05-27 01:52:02 +00:00
|
|
|
|
|
|
|
add_ppp_frame(rps, ds->stream_buf, ds->current);
|
|
|
|
|
|
|
|
ds->current = 0;
|
|
|
|
ds->is_escaped = 0;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ds->is_escaped) {
|
|
|
|
ds->stream_buf[ds->current++] = byte ^ 0x20;
|
|
|
|
ds->is_escaped = 0;
|
|
|
|
} else {
|
|
|
|
if (byte == 0x7d)
|
|
|
|
ds->is_escaped = 1;
|
|
|
|
else
|
2006-07-20 17:45:52 +00:00
|
|
|
ds->stream_buf[ds->current++] = byte;
|
2006-05-27 01:52:02 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void add_ppp_frame(rfcomm_packet_state *rps, guint8 *buf, int len) {
|
2006-07-20 17:45:52 +00:00
|
|
|
|
2006-05-27 01:52:02 +00:00
|
|
|
rfcomm_ppp_frame *ppp = my_malloc(len + sizeof(rfcomm_ppp_frame));
|
|
|
|
|
|
|
|
ppp->next = NULL;
|
|
|
|
ppp->len = len;
|
|
|
|
memcpy(ppp + 1, buf, len);
|
|
|
|
|
|
|
|
if (rps->ppp_first)
|
|
|
|
rps->ppp_last->next = ppp;
|
|
|
|
else
|
|
|
|
rps->ppp_first = ppp;
|
|
|
|
|
|
|
|
rps->ppp_last = ppp;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
int decode_fragments(dlci_stream *pstream, guint8 *buf) {
|
|
|
|
|
|
|
|
int real_len = 0, is_escaped = 0, chunk_index = 0;
|
|
|
|
ppp_chunk *chunk_curr = pstream->first;
|
|
|
|
|
|
|
|
for (real_len = 0; chunk_curr;) {
|
|
|
|
|
|
|
|
guint8 byte;
|
|
|
|
|
|
|
|
byte = chunk_curr->buf[chunk_index++];
|
|
|
|
if (chunk_index >= chunk_curr->len) {
|
|
|
|
chunk_index = 0;
|
|
|
|
chunk_curr = chunk_curr->next;
|
|
|
|
}
|
|
|
|
if (is_escaped) {
|
|
|
|
buf[real_len++] = byte ^ 0x20;
|
|
|
|
is_escaped = 0;
|
|
|
|
} else {
|
|
|
|
if (byte == 0x7d)
|
|
|
|
is_escaped = 1;
|
|
|
|
else
|
2006-07-20 17:45:52 +00:00
|
|
|
buf[real_len++] = byte;
|
2006-05-27 01:52:02 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
return real_len;
|
|
|
|
}
|
|
|
|
*/
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_ctrl_msc(proto_tree *t, tvbuff_t *tvb, int offset, int length)
|
|
|
|
{
|
|
|
|
|
|
|
|
proto_tree *st;
|
|
|
|
proto_item *it;
|
|
|
|
guint8 status;
|
|
|
|
int start_offset;
|
|
|
|
|
|
|
|
proto_tree_add_uint(t, hf_dlci, tvb, offset, 1, tvb_get_guint8(tvb, offset)&0x3f);
|
|
|
|
offset++;
|
|
|
|
|
|
|
|
start_offset=offset;
|
|
|
|
status = tvb_get_guint8(tvb, offset);
|
2006-07-20 17:45:52 +00:00
|
|
|
it = proto_tree_add_text(t, tvb, offset, 1, "V.24 Signals: FC = %d, RTC = %d, RTR = %d, IC = %d, DV = %d", (status >> 1) & 1,
|
|
|
|
(status >> 2) & 1, (status >> 3) & 1,
|
2006-05-27 01:52:02 +00:00
|
|
|
(status >> 6) & 1, (status >> 7) & 1);
|
|
|
|
st = proto_item_add_subtree(it, ett_ctrl_pn_v24);
|
|
|
|
|
|
|
|
proto_tree_add_item(st, hf_msc_fc, tvb, offset, 1, TRUE);
|
|
|
|
proto_tree_add_item(st, hf_msc_rtc, tvb, offset, 1, TRUE);
|
|
|
|
proto_tree_add_item(st, hf_msc_rtr, tvb, offset, 1, TRUE);
|
|
|
|
proto_tree_add_item(st, hf_msc_ic, tvb, offset, 1, TRUE);
|
|
|
|
proto_tree_add_item(st, hf_msc_dv, tvb, offset, 1, TRUE);
|
|
|
|
offset++;
|
|
|
|
|
|
|
|
if(length==3){
|
|
|
|
proto_tree_add_text(t, tvb, offset, 1, "Break bits B1-B3: 0x%x", (tvb_get_guint8(tvb, offset) & 0xf) >> 1);
|
|
|
|
proto_tree_add_item(t, hf_msc_l, tvb, offset, 1, TRUE);
|
|
|
|
offset++;
|
|
|
|
}
|
|
|
|
|
|
|
|
proto_item_set_len(it, offset-start_offset);
|
|
|
|
|
|
|
|
return offset;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_btrfcomm_Address(tvbuff_t *tvb, int offset, proto_tree *tree, guint8 *ea_flagp, guint8 *cr_flagp, guint8 *dlcip)
|
|
|
|
{
|
|
|
|
proto_item *ti;
|
|
|
|
proto_tree *addr_tree;
|
|
|
|
guint8 dlci, cr_flag, ea_flag, flags;
|
|
|
|
|
|
|
|
flags=tvb_get_guint8(tvb, offset);
|
|
|
|
|
|
|
|
ea_flag=flags&0x01;
|
|
|
|
if(ea_flagp){
|
|
|
|
*ea_flagp=ea_flag;
|
|
|
|
}
|
|
|
|
|
|
|
|
cr_flag=(flags&0x02)?1:0;
|
|
|
|
if(cr_flagp){
|
|
|
|
*cr_flagp=cr_flag;
|
|
|
|
}
|
|
|
|
|
|
|
|
dlci=flags>>2;
|
|
|
|
if(dlcip){
|
|
|
|
*dlcip=dlci;
|
|
|
|
}
|
|
|
|
|
|
|
|
ti = proto_tree_add_text(tree, tvb, offset, 1, "Address: E/A flag: %d, C/R flag: %d, DLCI: 0x%02x", ea_flag, cr_flag, dlci);
|
|
|
|
addr_tree = proto_item_add_subtree(ti, ett_addr);
|
|
|
|
|
|
|
|
proto_tree_add_uint(addr_tree, hf_dlci, tvb, offset, 1, dlci);
|
|
|
|
proto_tree_add_item(addr_tree, hf_cr, tvb, offset, 1, TRUE);
|
|
|
|
proto_tree_add_item(addr_tree, hf_ea, tvb, offset, 1, TRUE);
|
|
|
|
offset++;
|
|
|
|
|
|
|
|
return offset;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_btrfcomm_Control(tvbuff_t *tvb, int offset, proto_tree *tree, guint8 *pf_flagp, guint8 *frame_typep)
|
|
|
|
{
|
|
|
|
proto_item *ti;
|
|
|
|
proto_tree *hctl_tree;
|
|
|
|
guint8 frame_type, pf_flag, flags;
|
|
|
|
|
|
|
|
flags=tvb_get_guint8(tvb, offset);
|
|
|
|
|
|
|
|
pf_flag=(flags&0x10)?1:0;
|
|
|
|
if(pf_flagp){
|
|
|
|
*pf_flagp=pf_flag;
|
|
|
|
}
|
|
|
|
|
|
|
|
frame_type=flags&0xef;
|
|
|
|
if(frame_typep){
|
|
|
|
*frame_typep=frame_type;
|
|
|
|
}
|
|
|
|
|
|
|
|
ti = proto_tree_add_text(tree, tvb, offset, 1, "Control: Frame type: %s (0x%x), P/F flag: %d", val_to_str(frame_type, vs_frame_type, "Unknown"), frame_type, pf_flag);
|
|
|
|
hctl_tree = proto_item_add_subtree(ti, ett_control);
|
|
|
|
|
|
|
|
proto_tree_add_item(hctl_tree, hf_pf, tvb, offset, 1, TRUE);
|
|
|
|
proto_tree_add_item(hctl_tree, hf_frame_type, tvb, offset, 1, TRUE);
|
|
|
|
|
|
|
|
offset++;
|
|
|
|
return offset;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_btrfcomm_PayloadLen(tvbuff_t *tvb, int offset, proto_tree *tree, guint16 *frame_lenp)
|
|
|
|
{
|
|
|
|
guint16 frame_len;
|
|
|
|
int start_offset=offset;
|
|
|
|
|
|
|
|
frame_len = tvb_get_guint8(tvb, offset);
|
|
|
|
offset++;
|
|
|
|
|
|
|
|
if(frame_len&0x01){
|
|
|
|
frame_len >>= 1; /* 0 - 127 */
|
|
|
|
} else {
|
|
|
|
frame_len >>= 1; /* 128 - ... */
|
|
|
|
frame_len |= (tvb_get_guint8(tvb, offset)) << 7;
|
|
|
|
offset++;
|
|
|
|
}
|
|
|
|
|
|
|
|
proto_tree_add_uint(tree, hf_len, tvb, start_offset, offset-start_offset, frame_len);
|
|
|
|
|
|
|
|
if(frame_lenp){
|
|
|
|
*frame_lenp=frame_len;
|
|
|
|
}
|
|
|
|
|
|
|
|
return offset;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_btrfcomm_MccType(tvbuff_t *tvb, int offset, proto_tree *tree, packet_info *pinfo, guint8 *mcc_cr_flagp, guint8 *mcc_ea_flagp, guint32 *mcc_typep)
|
|
|
|
{
|
|
|
|
int start_offset=offset;
|
|
|
|
proto_item *ti;
|
|
|
|
proto_tree *mcc_tree;
|
|
|
|
guint8 flags, mcc_cr_flag, mcc_ea_flag;
|
|
|
|
guint32 mcc_type;
|
|
|
|
|
|
|
|
flags=tvb_get_guint8(tvb, offset);
|
|
|
|
|
|
|
|
mcc_cr_flag=(flags&0x2)?1:0;
|
|
|
|
if(mcc_cr_flagp){
|
|
|
|
*mcc_cr_flagp=mcc_cr_flag;
|
|
|
|
}
|
|
|
|
|
|
|
|
mcc_ea_flag=flags&0x1;
|
|
|
|
if(mcc_ea_flagp){
|
|
|
|
*mcc_ea_flagp=mcc_ea_flag;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
offset = get_le_multi_byte_value(tvb, offset, tree, &mcc_type, -1);
|
|
|
|
mcc_type =(mcc_type>>1)&0x3f; /* shift c/r flag off */
|
|
|
|
if(mcc_typep){
|
|
|
|
*mcc_typep=mcc_type;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if(mcc_type){
|
|
|
|
if ((check_col(pinfo->cinfo, COL_INFO))){
|
|
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%s ", val_to_str(mcc_type, vs_ctl, "Unknown"));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
ti = proto_tree_add_text(tree, tvb, start_offset, offset-start_offset, "Type: %s (0x%x), C/R flag = %d, E/A flag = %d", val_to_str(mcc_type, vs_ctl, "Unknown"), mcc_type, mcc_cr_flag, mcc_ea_flag);
|
|
|
|
mcc_tree = proto_item_add_subtree(ti, ett_mcc);
|
|
|
|
|
|
|
|
proto_tree_add_item(mcc_tree, hf_mcc_cmd, tvb, start_offset, offset-start_offset, TRUE);
|
|
|
|
proto_tree_add_item(mcc_tree, hf_mcc_cr, tvb, start_offset, 1, TRUE);
|
|
|
|
proto_tree_add_item(mcc_tree, hf_mcc_ea, tvb, start_offset, 1, TRUE);
|
|
|
|
|
|
|
|
return offset;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* This dissector is only called from L2CAP.
|
|
|
|
* This dissector REQUIRES that pinfo->private_data points to a valid structure
|
|
|
|
* since it needs this (future) to track which flow a fragment belongs to
|
|
|
|
* in order to do reassembly of ppp streams.
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
dissect_btrfcomm(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
|
|
{
|
|
|
|
proto_item *ti;
|
|
|
|
proto_tree *rfcomm_tree;
|
|
|
|
proto_tree *ctrl_tree;
|
|
|
|
int offset=0;
|
|
|
|
int fcs_offset;
|
|
|
|
guint8 dlci, cr_flag, ea_flag;
|
|
|
|
guint8 frame_type, pf_flag;
|
|
|
|
guint16 frame_len;
|
|
|
|
dlci_state_t *dlci_state;
|
|
|
|
btl2cap_data_t *l2cap_data;
|
|
|
|
|
|
|
|
l2cap_data=pinfo->private_data;
|
|
|
|
|
|
|
|
ti = proto_tree_add_item(tree, proto_btrfcomm, tvb, offset, -1, TRUE);
|
|
|
|
rfcomm_tree = proto_item_add_subtree(ti, ett_btrfcomm);
|
|
|
|
|
2009-08-09 06:26:46 +00:00
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "RFCOMM");
|
2006-05-27 01:52:02 +00:00
|
|
|
if (check_col(pinfo->cinfo, COL_INFO)) {
|
2007-10-23 05:50:00 +00:00
|
|
|
col_set_str(pinfo->cinfo, COL_INFO, pinfo->p2p_dir == P2P_DIR_SENT ? "Sent " : "Rcvd ");
|
2006-05-27 01:52:02 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* flags and dlci */
|
|
|
|
offset=dissect_btrfcomm_Address(tvb, offset, rfcomm_tree, &ea_flag, &cr_flag, &dlci);
|
|
|
|
|
|
|
|
|
|
|
|
dlci_state=se_tree_lookup32(dlci_table, dlci);
|
|
|
|
if(!dlci_state){
|
2008-10-02 04:55:51 +00:00
|
|
|
dlci_state=se_alloc0(sizeof(dlci_state_t));
|
2006-05-27 01:52:02 +00:00
|
|
|
dlci_state->direction[0].current=-1;
|
|
|
|
dlci_state->direction[1].current=-1;
|
|
|
|
se_tree_insert32(dlci_table, dlci, dlci_state);
|
|
|
|
}
|
2006-07-20 17:45:52 +00:00
|
|
|
|
2006-05-27 01:52:02 +00:00
|
|
|
/* pf and frame type */
|
|
|
|
offset=dissect_btrfcomm_Control(tvb, offset, rfcomm_tree, &pf_flag, &frame_type);
|
|
|
|
|
|
|
|
|
|
|
|
if ((check_col(pinfo->cinfo, COL_INFO))){
|
2006-07-20 17:45:52 +00:00
|
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%s DLCI=%d ", val_to_str(frame_type, vs_frame_type_short, "Unknown"), dlci);
|
2006-05-27 01:52:02 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* payload length */
|
|
|
|
offset=dissect_btrfcomm_PayloadLen(tvb, offset, rfcomm_tree, &frame_len);
|
|
|
|
|
|
|
|
|
2006-07-20 17:45:52 +00:00
|
|
|
/* UID frame */
|
2006-05-27 01:52:02 +00:00
|
|
|
if(frame_type==0xef && dlci && pf_flag) {
|
|
|
|
if ((check_col(pinfo->cinfo, COL_INFO))){
|
|
|
|
col_append_str(pinfo->cinfo, COL_INFO, "UID ");
|
|
|
|
}
|
|
|
|
if((dlci_state->do_credit_fc&0x03)==0x03){
|
|
|
|
/*QQQ use tvb_length_remaining()==2 and !frame_len as heuristics to catch this as well? */
|
|
|
|
/* add credit based flow control byte */
|
|
|
|
proto_tree_add_item(rfcomm_tree, hf_fc_credits, tvb, offset, 1, TRUE);
|
|
|
|
offset++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
fcs_offset = offset + frame_len;
|
|
|
|
|
|
|
|
|
|
|
|
/* multiplexer control command */
|
|
|
|
if((!dlci)&&frame_len){
|
|
|
|
proto_item *mcc_ti;
|
|
|
|
guint32 mcc_type, length;
|
|
|
|
guint8 mcc_cr_flag, mcc_ea_flag;
|
|
|
|
int start_offset=offset;
|
|
|
|
|
|
|
|
if ((check_col(pinfo->cinfo, COL_INFO))){
|
|
|
|
col_append_str(pinfo->cinfo, COL_INFO, "MPX_CTRL ");
|
|
|
|
}
|
|
|
|
|
|
|
|
mcc_ti = proto_tree_add_text(rfcomm_tree, tvb, offset, 1, "Multiplexer Control Command");
|
|
|
|
ctrl_tree = proto_item_add_subtree(mcc_ti, ett_btrfcomm_ctrl);
|
|
|
|
|
|
|
|
/* mcc type */
|
|
|
|
offset=dissect_btrfcomm_MccType(tvb, offset, ctrl_tree, pinfo, &mcc_cr_flag, &mcc_ea_flag, &mcc_type);
|
|
|
|
|
|
|
|
/* len */
|
|
|
|
offset = get_le_multi_byte_value(tvb, offset, ctrl_tree, &length, hf_mcc_len);
|
|
|
|
|
2009-11-12 02:03:10 +00:00
|
|
|
|
|
|
|
if (length > (guint32) tvb_length_remaining(tvb, offset)) {
|
|
|
|
expert_add_info_format(pinfo, ctrl_tree, PI_MALFORMED, PI_ERROR, "Huge MCC length: %u", length);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2006-05-27 01:52:02 +00:00
|
|
|
switch(mcc_type) {
|
|
|
|
case 0x20: /* Parameter Negotiation */
|
2009-11-12 01:55:06 +00:00
|
|
|
col_append_str(pinfo->cinfo, COL_INFO, "Parameter Negotiation ");
|
2006-05-27 01:52:02 +00:00
|
|
|
dissect_ctrl_pn(pinfo, ctrl_tree, tvb, offset, mcc_cr_flag);
|
|
|
|
break;
|
|
|
|
case 0x38: /* Model Status Command */
|
2009-11-12 01:55:06 +00:00
|
|
|
col_append_str(pinfo->cinfo, COL_INFO, "Model Status Command ");
|
2006-05-27 01:52:02 +00:00
|
|
|
dissect_ctrl_msc(ctrl_tree, tvb, offset, length);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
offset += length;
|
|
|
|
|
|
|
|
proto_item_set_len(mcc_ti, offset-start_offset);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* dissect everything as "data" for now until we get examples of
|
|
|
|
* ppp over rfcomm
|
|
|
|
*
|
|
|
|
* it might be sufficient to just check if the first byte is the 0x7e
|
2008-07-09 01:30:30 +00:00
|
|
|
* delimiter and if so just unescape it all into an ep_alloc() buffer
|
2006-05-27 01:52:02 +00:00
|
|
|
* and pass it to ppp.
|
2006-07-20 17:45:52 +00:00
|
|
|
*/
|
2006-05-27 01:52:02 +00:00
|
|
|
if(dlci&&frame_len){
|
|
|
|
tvbuff_t *next_tvb;
|
|
|
|
next_tvb = tvb_new_subset(tvb, offset, frame_len, frame_len);
|
|
|
|
call_dissector(data_handle, next_tvb, pinfo, tree);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
proto_tree_add_item(rfcomm_tree, hf_fcs, tvb, fcs_offset, 1, TRUE);
|
|
|
|
|
|
|
|
|
|
|
|
#ifdef REMOVED
|
|
|
|
/* to serve as inspiration when implementing ppp over rfcomm */
|
|
|
|
rfcomm_packet_state *rps = p_get_proto_data(pinfo->fd, proto_btrfcomm);
|
|
|
|
proto_item *ti_main, *ti_addr, *ti_hctl, *ti;
|
|
|
|
proto_tree *st, *st_ctrl, *st_addr, *st_hctl;
|
|
|
|
int size, off, off_fcs
|
|
|
|
|
|
|
|
if (rps == NULL) {
|
|
|
|
rps = my_malloc(sizeof(rfcomm_packet_state));
|
|
|
|
rps->ppp_first = NULL;
|
|
|
|
rps->ppp_last = NULL;
|
2006-07-20 17:45:52 +00:00
|
|
|
p_add_proto_data(pinfo->fd, proto_btrfcomm, rps);
|
2006-05-27 01:52:02 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if(dlci&&frame_len){
|
|
|
|
tvbuff_t *next_tvb;
|
|
|
|
|
|
|
|
if (frame_type == 0xef && !pinfo->fd->flags.visited) {
|
|
|
|
dlci_stream *ds;
|
|
|
|
|
|
|
|
ds = &state[dlci].direction[cr_flag];
|
|
|
|
stream_buf_append(rps, ds, tvb, off, frame_len);
|
2006-07-20 17:45:52 +00:00
|
|
|
}
|
2006-05-27 01:52:02 +00:00
|
|
|
|
|
|
|
if (rps && rps->ppp_first) {
|
|
|
|
rfcomm_ppp_frame *p;
|
|
|
|
|
|
|
|
for (p = rps->ppp_first; p; p = p->next) {
|
2009-05-13 19:46:11 +00:00
|
|
|
next_tvb = tvb_new_child_real_data(tvb, (guint8 *) (p + 1), p->len, p->len);
|
2009-08-15 06:38:10 +00:00
|
|
|
packet_add_new_data_source(pinfo, rfcomm_tree, next_tvb, "Reassembled PPP frame");
|
2006-05-27 01:52:02 +00:00
|
|
|
call_dissector(ppp_handle, next_tvb, pinfo, tree);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
next_tvb = tvb_new_subset(tvb, off, frame_len, frame_len);
|
|
|
|
call_dissector(data_handle, next_tvb, pinfo, tree);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
proto_register_btrfcomm(void)
|
2006-07-20 17:45:52 +00:00
|
|
|
{
|
2006-05-27 01:52:02 +00:00
|
|
|
static hf_register_info hf[] = {
|
|
|
|
{&hf_dlci,
|
|
|
|
{"DLCI", "btrfcomm.dlci",
|
2006-07-20 17:45:52 +00:00
|
|
|
FT_UINT8, BASE_HEX, NULL, 0,
|
2006-05-27 01:52:02 +00:00
|
|
|
"RFCOMM DLCI", HFILL}
|
|
|
|
},
|
|
|
|
{&hf_priority,
|
|
|
|
{"Priority", "btrfcomm.priority",
|
2006-07-20 17:45:52 +00:00
|
|
|
FT_UINT8, BASE_DEC, NULL, 0x3f,
|
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
|
|
|
NULL, HFILL}
|
2006-05-27 01:52:02 +00:00
|
|
|
},
|
|
|
|
{&hf_max_frame_size,
|
|
|
|
{"Max Frame Size", "btrfcomm.max_frame_size",
|
|
|
|
FT_UINT16, BASE_DEC, NULL, 0,
|
|
|
|
"Maximum Frame Size", HFILL}
|
|
|
|
},
|
|
|
|
{&hf_max_retrans,
|
|
|
|
{"Max Retrans", "btrfcomm.max_retrans",
|
|
|
|
FT_UINT8, BASE_DEC, NULL, 0,
|
|
|
|
"Maximum number of retransmissions", HFILL}
|
|
|
|
},
|
|
|
|
{&hf_error_recovery_mode,
|
|
|
|
{"Error Recovery Mode", "btrfcomm.error_recovery_mode",
|
|
|
|
FT_UINT8, BASE_DEC, NULL, 0x07,
|
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
|
|
|
NULL, HFILL}
|
2006-05-27 01:52:02 +00:00
|
|
|
},
|
|
|
|
{&hf_ea,
|
|
|
|
{"EA Flag", "btrfcomm.ea",
|
|
|
|
FT_UINT8, BASE_HEX, VALS(vs_ea), 0x1,
|
|
|
|
"EA flag (should be always 1)", HFILL}
|
|
|
|
},
|
|
|
|
{&hf_cr,
|
|
|
|
{"C/R Flag", "btrfcomm.cr",
|
|
|
|
FT_UINT8, BASE_HEX, VALS(vs_cr), 0x2,
|
|
|
|
"Command/Response flag", HFILL}
|
|
|
|
},
|
|
|
|
{&hf_mcc_ea,
|
|
|
|
{"EA Flag", "btrfcomm.mcc.ea",
|
|
|
|
FT_UINT8, BASE_HEX, VALS(vs_ea), 0x1,
|
|
|
|
"EA flag (should be always 1)", HFILL}
|
|
|
|
},
|
|
|
|
{&hf_mcc_cr,
|
|
|
|
{"C/R Flag", "btrfcomm.mcc.cr",
|
|
|
|
FT_UINT8, BASE_HEX, VALS(vs_cr), 0x2,
|
|
|
|
"Command/Response flag", HFILL}
|
|
|
|
},
|
|
|
|
{&hf_mcc_cmd,
|
|
|
|
{"C/R Flag", "btrfcomm.mcc.cmd",
|
|
|
|
FT_UINT8, BASE_HEX, VALS(vs_ctl), 0xfc,
|
|
|
|
"Command/Response flag", HFILL}
|
|
|
|
},
|
|
|
|
{&hf_frame_type,
|
|
|
|
{"Frame type", "btrfcomm.frame_type",
|
2006-07-20 17:45:52 +00:00
|
|
|
FT_UINT8, BASE_HEX, VALS(vs_frame_type), 0xef,
|
2006-05-27 01:52:02 +00:00
|
|
|
"Command/Response flag", HFILL}
|
|
|
|
},
|
|
|
|
{&hf_pf,
|
|
|
|
{"P/F flag", "btrfcomm.pf",
|
2006-07-20 17:45:52 +00:00
|
|
|
FT_UINT8, BASE_HEX, NULL, 0x10,
|
2006-05-27 01:52:02 +00:00
|
|
|
"Poll/Final bit", HFILL}
|
|
|
|
},
|
|
|
|
{&hf_pn_i14,
|
|
|
|
{"Type of frame", "btrfcomm.pn.i",
|
2006-07-20 17:45:52 +00:00
|
|
|
FT_UINT8, BASE_HEX, VALS(vs_ctl_pn_i), 0x0f,
|
|
|
|
"Type of information frames used for that particular DLCI",
|
2006-05-27 01:52:02 +00:00
|
|
|
HFILL}
|
|
|
|
},
|
|
|
|
{&hf_pn_c14,
|
|
|
|
{"Convergence layer", "btrfcomm.pn.cl",
|
2006-07-20 17:45:52 +00:00
|
|
|
FT_UINT8, BASE_HEX, VALS(vs_ctl_pn_cl), 0xf0,
|
2006-05-27 01:52:02 +00:00
|
|
|
"Convergence layer used for that particular DLCI", HFILL}
|
|
|
|
},
|
|
|
|
{&hf_len,
|
|
|
|
{"Payload length", "btrfcomm.len",
|
2006-07-20 17:45:52 +00:00
|
|
|
FT_UINT16, BASE_DEC, NULL, 0,
|
2006-05-27 01:52:02 +00:00
|
|
|
"Frame length", HFILL}
|
2006-07-20 17:45:52 +00:00
|
|
|
},
|
2006-05-27 01:52:02 +00:00
|
|
|
{&hf_mcc_len,
|
|
|
|
{"MCC Length", "btrfcomm.mcc.len",
|
2006-07-20 17:45:52 +00:00
|
|
|
FT_UINT16, BASE_DEC, NULL, 0,
|
2006-05-27 01:52:02 +00:00
|
|
|
"Length of MCC data", HFILL}
|
2006-07-20 17:45:52 +00:00
|
|
|
},
|
2006-05-27 01:52:02 +00:00
|
|
|
{&hf_fcs,
|
|
|
|
{"Frame Check Sequence", "btrfcomm.fcs",
|
|
|
|
FT_UINT8, BASE_HEX, NULL, 0,
|
|
|
|
"Checksum over frame", HFILL}
|
|
|
|
},
|
|
|
|
{&hf_msc_fc,
|
|
|
|
{"Flow Control (FC)", "btrfcomm.msc.fc",
|
|
|
|
FT_UINT8, BASE_HEX, NULL, 0x2,
|
|
|
|
"Flow Control", HFILL}
|
|
|
|
},
|
|
|
|
{&hf_msc_rtc,
|
|
|
|
{"Ready To Communicate (RTC)", "btrfcomm.msc.rtc",
|
|
|
|
FT_UINT8, BASE_HEX, NULL, 0x4,
|
|
|
|
"Ready To Communicate", HFILL}
|
|
|
|
},
|
|
|
|
{&hf_msc_rtr,
|
|
|
|
{"Ready To Receive (RTR)", "btrfcomm.msc.rtr",
|
|
|
|
FT_UINT8, BASE_HEX, NULL, 0x8,
|
|
|
|
"Ready To Receive", HFILL}
|
|
|
|
},
|
|
|
|
{&hf_msc_ic,
|
|
|
|
{"Incoming Call Indicator (IC)", "btrfcomm.msc.ic",
|
|
|
|
FT_UINT8, BASE_HEX, NULL, 0x40,
|
|
|
|
"Incoming Call Indicator", HFILL}
|
|
|
|
},
|
|
|
|
{&hf_msc_dv,
|
|
|
|
{"Data Valid (DV)", "btrfcomm.msc.dv",
|
|
|
|
FT_UINT8, BASE_HEX, NULL, 0x80,
|
|
|
|
"Data Valid", HFILL}
|
|
|
|
},
|
|
|
|
{&hf_msc_l,
|
|
|
|
{"Length of break in units of 200ms", "btrfcomm.msc.bl",
|
|
|
|
FT_UINT8, BASE_DEC, NULL, 0xf0,
|
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
|
|
|
NULL, HFILL}
|
2006-05-27 01:52:02 +00:00
|
|
|
},
|
|
|
|
{&hf_fc_credits,
|
|
|
|
{"Credits", "btrfcomm.credits",
|
|
|
|
FT_UINT8, BASE_DEC, NULL, 0,
|
|
|
|
"Flow control: number of UIH frames allowed to send", HFILL}
|
|
|
|
}
|
|
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
/* Setup protocol subtree array */
|
|
|
|
static gint *ett[] = {
|
|
|
|
&ett_btrfcomm,
|
|
|
|
&ett_btrfcomm_ctrl,
|
|
|
|
&ett_addr,
|
|
|
|
&ett_control,
|
|
|
|
&ett_mcc,
|
|
|
|
&ett_ctrl_pn_ci,
|
|
|
|
&ett_ctrl_pn_v24
|
|
|
|
};
|
|
|
|
|
|
|
|
/* Register the protocol name and description */
|
|
|
|
proto_btrfcomm = proto_register_protocol("Bluetooth RFCOMM Packet", "RFCOMM", "btrfcomm");
|
|
|
|
|
|
|
|
register_dissector("btrfcomm", dissect_btrfcomm, proto_btrfcomm);
|
2006-07-20 17:45:52 +00:00
|
|
|
|
2006-05-27 01:52:02 +00:00
|
|
|
/* Required function calls to register the header fields and subtrees used */
|
|
|
|
proto_register_field_array(proto_btrfcomm, hf, array_length(hf));
|
|
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
|
2006-08-14 08:29:29 +00:00
|
|
|
dlci_table=se_tree_create(EMEM_TREE_TYPE_RED_BLACK, "RFCOMM dlci table");
|
2006-05-27 01:52:02 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
proto_reg_handoff_btrfcomm(void)
|
|
|
|
{
|
|
|
|
dissector_handle_t btrfcomm_handle;
|
|
|
|
|
|
|
|
btrfcomm_handle = find_dissector("btrfcomm");
|
|
|
|
dissector_add("btl2cap.psm", BTL2CAP_PSM_RFCOMM, btrfcomm_handle);
|
|
|
|
|
|
|
|
data_handle = find_dissector("data");
|
|
|
|
ppp_handle = find_dissector("ppp_hdlc");
|
|
|
|
}
|