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/* packet-rpl.c
* Routines for RPL
* Jochen Friedrich <jochen@scram.de>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/llcsaps.h>
#include "packet-llc.h"
void proto_register_rpl(void);
void proto_reg_handoff_rpl(void);
static int proto_rpl = -1;
static int hf_rpl_type = -1;
static int hf_rpl_len = -1;
static int hf_rpl_corrval = -1;
static int hf_rpl_respval = -1;
static int hf_rpl_maxframe = -1;
static int hf_rpl_connclass = -1;
static int hf_rpl_lmac = -1;
static int hf_rpl_smac = -1;
static int hf_rpl_sap = -1;
static int hf_rpl_equipment = -1;
static int hf_rpl_memsize = -1;
static int hf_rpl_bsmversion = -1;
static int hf_rpl_adapterid = -1;
static int hf_rpl_shortname = -1;
static int hf_rpl_laddress = -1;
static int hf_rpl_xaddress = -1;
static int hf_rpl_sequence = -1;
static int hf_rpl_config = -1;
static int hf_rpl_flags = -1;
static int hf_rpl_data = -1;
static int hf_rpl_ec = -1;
static gint ett_rpl = -1;
static gint ett_rpl_0004 = -1;
static gint ett_rpl_0008 = -1;
static gint ett_rpl_4003 = -1;
static gint ett_rpl_4006 = -1;
static gint ett_rpl_4007 = -1;
static gint ett_rpl_4009 = -1;
static gint ett_rpl_400a = -1;
static gint ett_rpl_400b = -1;
static gint ett_rpl_400c = -1;
static gint ett_rpl_4011 = -1;
static gint ett_rpl_4018 = -1;
static gint ett_rpl_c005 = -1;
static gint ett_rpl_c014 = -1;
static gint ett_rpl_unkn = -1;
static dissector_handle_t rpl_handle;
static const value_string rpl_type_vals[] = {
{ 1, "FIND Command" },
{ 2, "FOUND Frame" },
{ 4, "Search Vector" },
{ 8, "Connect Info Vector" },
{ 0x10, "Send File Request" },
{ 0x20, "File Data Response" },
{ 0x4003, "Correlator Vector" },
{ 0x4006, "Loader Address Vector" },
{ 0x4007, "Loader SAP Vector" },
{ 0x4009, "Frame Size Sub-Vector" },
{ 0x400a, "Connect Class Sub-Vector" },
{ 0x400b, "Response Correlator" },
{ 0x400c, "Set Address Vector" },
{ 0x4011, "Sequence Header" },
{ 0x4018, "File Data Vector" },
{ 0xc005, "Loader Info Sub-Vector" },
{ 0xc014, "Loader Header" },
{ 0x0, NULL }
};
static void
// NOLINTNEXTLINE(misc-no-recursion)
dissect_rpl_container(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
guint16 len, type, sublen, subtyp;
proto_tree *rpl_container_tree;
guint16 offset;
gint ett_type;
gint length, reported_length;
len = tvb_get_ntohs(tvb, 0);
proto_tree_add_item(tree, hf_rpl_len, tvb, 0, 2, ENC_BIG_ENDIAN);
type = tvb_get_ntohs(tvb, 2);
proto_tree_add_item(tree, hf_rpl_type, tvb, 2, 2, ENC_BIG_ENDIAN);
offset = 4;
switch (type) {
case 1:
case 2:
case 4:
case 8:
case 0x10:
case 0x20:
while (len >= offset+4) {
sublen = tvb_get_ntohs(tvb, offset);
subtyp = tvb_get_ntohs(tvb, offset+2);
ett_type = ett_rpl_unkn;
if(subtyp == 0x0004) ett_type = ett_rpl_0004;
if(subtyp == 0x0008) ett_type = ett_rpl_0008;
if(subtyp == 0x4003) ett_type = ett_rpl_4003;
if(subtyp == 0x4006) ett_type = ett_rpl_4006;
if(subtyp == 0x4007) ett_type = ett_rpl_4007;
if(subtyp == 0x4009) ett_type = ett_rpl_4009;
if(subtyp == 0x400a) ett_type = ett_rpl_400a;
if(subtyp == 0x400b) ett_type = ett_rpl_400b;
if(subtyp == 0x400c) ett_type = ett_rpl_400c;
if(subtyp == 0x4011) ett_type = ett_rpl_4011;
if(subtyp == 0x4018) ett_type = ett_rpl_4018;
if(subtyp == 0xc005) ett_type = ett_rpl_c005;
if(subtyp == 0xc014) ett_type = ett_rpl_c014;
rpl_container_tree = proto_tree_add_subtree(tree, tvb,
offset, sublen, ett_type, NULL,
val_to_str_const(subtyp,
rpl_type_vals,
"Unknown Type"));
length = tvb_captured_length_remaining(tvb, offset);
if (length > sublen)
length = sublen;
reported_length = tvb_reported_length_remaining(tvb, offset);
if (reported_length > sublen)
reported_length = sublen;
if ( length > 0) {
dissect_rpl_container(tvb_new_subset_length_caplen(tvb,
offset, length, reported_length),
pinfo, rpl_container_tree);
offset += reported_length;
} else {
/* no more data, exit the loop */
offset += reported_length;
break;
}
}
break;
case 0x4003:
proto_tree_add_item(tree, hf_rpl_corrval,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
break;
case 0x4006:
proto_tree_add_item(tree, hf_rpl_lmac,
tvb, offset, 6, ENC_NA);
offset += 6;
break;
case 0x4007:
proto_tree_add_item(tree, hf_rpl_sap,
tvb, offset, 1, ENC_BIG_ENDIAN);
offset ++;
break;
case 0x4009:
proto_tree_add_item(tree, hf_rpl_maxframe,
tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
break;
case 0x400a:
proto_tree_add_item(tree, hf_rpl_connclass,
tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
break;
case 0x400b:
proto_tree_add_item(tree, hf_rpl_respval,
tvb, offset, 1, ENC_BIG_ENDIAN);
offset ++;
break;
case 0x400c:
proto_tree_add_item(tree, hf_rpl_smac,
tvb, offset, 6, ENC_NA);
offset += 6;
break;
case 0x4011:
proto_tree_add_item(tree, hf_rpl_sequence,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
break;
case 0x4018:
proto_tree_add_item(tree, hf_rpl_data,
tvb, offset, len-4, ENC_NA);
offset += len - 4;
break;
case 0xc005:
proto_tree_add_item(tree, hf_rpl_config,
tvb, offset, 8, ENC_NA);
offset += 8;
proto_tree_add_item(tree, hf_rpl_equipment,
tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(tree, hf_rpl_memsize,
tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(tree, hf_rpl_bsmversion,
tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(tree, hf_rpl_ec,
tvb, offset, 6, ENC_NA);
offset += 6;
proto_tree_add_item(tree, hf_rpl_adapterid,
tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(tree, hf_rpl_shortname,
tvb, offset, 10, ENC_NA);
offset += 10;
break;
case 0xc014:
proto_tree_add_item(tree, hf_rpl_laddress,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(tree, hf_rpl_xaddress,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(tree, hf_rpl_flags,
tvb, offset, 1, ENC_BIG_ENDIAN);
offset ++;
break;
default:
call_data_dissector(tvb_new_subset_remaining(tvb, 4), pinfo,
tree);
break;
}
if (tvb_reported_length(tvb) > offset)
call_data_dissector(tvb_new_subset_remaining(tvb, offset), pinfo, tree);
}
static int
dissect_rpl(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
guint16 rpl_len, rpl_type;
proto_item *ti;
proto_tree *rpl_tree;
tvbuff_t *next_tvb;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "RPL");
rpl_len = tvb_get_ntohs(tvb, 0);
rpl_type = tvb_get_ntohs(tvb, 2);
col_set_str(pinfo->cinfo, COL_INFO,
val_to_str_const(rpl_type, rpl_type_vals, "Unknown Type"));
ti = proto_tree_add_item(tree, proto_rpl, tvb, 0,
rpl_len, ENC_NA);
rpl_tree = proto_item_add_subtree(ti, ett_rpl);
next_tvb = tvb_new_subset_remaining(tvb, 0);
set_actual_length(next_tvb, rpl_len);
dissect_rpl_container(next_tvb, pinfo, rpl_tree);
if (tvb_reported_length(tvb) > rpl_len)
call_data_dissector(tvb_new_subset_remaining(tvb, rpl_len), pinfo,
tree);
return tvb_captured_length(tvb);
}
void
proto_register_rpl(void)
{
static hf_register_info hf[] = {
{ &hf_rpl_type,
{ "Type", "rpl.type",
FT_UINT16, BASE_DEC, VALS(rpl_type_vals), 0x0,
"RPL Packet Type", HFILL }},
{ &hf_rpl_len,
{ "Length", "rpl.len",
FT_UINT16, BASE_DEC, NULL, 0x0,
"RPL Packet Length", HFILL }},
{ &hf_rpl_corrval,
{ "Correlator Value", "rpl.corrval",
FT_UINT32, BASE_HEX, NULL, 0x0,
"RPL Correlator Value", HFILL }},
{ &hf_rpl_respval,
{ "Response Code", "rpl.respval",
FT_UINT8, BASE_DEC, NULL, 0x0,
"RPL Response Code", HFILL }},
{ &hf_rpl_maxframe,
{ "Maximum Frame Size", "rpl.maxframe",
FT_UINT16, BASE_DEC, NULL, 0x0,
"RPL Maximum Frame Size", HFILL }},
{ &hf_rpl_connclass,
{ "Connection Class", "rpl.connclass",
FT_UINT16, BASE_HEX, NULL, 0x0,
"RPL Connection Class", HFILL }},
{ &hf_rpl_lmac,
{ "Loader MAC Address", "rpl.lmac",
FT_ETHER, BASE_NONE, NULL, 0x0,
"RPL Loader MAC Address", HFILL }},
{ &hf_rpl_smac,
{ "Set MAC Address", "rpl.smac",
FT_ETHER, BASE_NONE, NULL, 0x0,
"RPL Set MAC Address", HFILL }},
{ &hf_rpl_sap,
{ "SAP", "rpl.sap",
FT_UINT8, BASE_HEX, VALS(sap_vals), 0x0,
"RPL SAP", HFILL }},
{ &hf_rpl_equipment,
{ "Equipment", "rpl.equipment",
FT_UINT16, BASE_HEX, NULL, 0x0,
"RPL Equipment - AX from INT 11h", HFILL }},
{ &hf_rpl_memsize,
{ "Memory Size", "rpl.memsize",
FT_UINT16, BASE_DEC, NULL, 0x0,
"RPL Memory Size - AX from INT 12h MINUS 32k MINUS the Boot ROM Size", HFILL }},
{ &hf_rpl_bsmversion,
{ "BSM Version", "rpl.bsmversion",
FT_UINT16, BASE_HEX, NULL, 0x0,
"RPL Version of BSM.obj", HFILL }},
{ &hf_rpl_adapterid,
{ "Adapter ID", "rpl.adapterid",
FT_UINT16, BASE_HEX, NULL, 0x0,
"RPL Adapter ID", HFILL }},
{ &hf_rpl_shortname,
{ "Short Name", "rpl.shortname",
FT_BYTES, BASE_NONE, NULL, 0x0,
"RPL BSM Short Name", HFILL }},
{ &hf_rpl_laddress,
{ "Locate Address", "rpl.laddress",
FT_UINT32, BASE_HEX, NULL, 0x0,
"RPL Locate Address", HFILL }},
{ &hf_rpl_xaddress,
{ "XFER Address", "rpl.xaddress",
FT_UINT32, BASE_HEX, NULL, 0x0,
"RPL Transfer Control Address", HFILL }},
{ &hf_rpl_sequence,
{ "Sequence Number", "rpl.sequence",
FT_UINT32, BASE_HEX, NULL, 0x0,
"RPL Sequence Number", HFILL }},
{ &hf_rpl_config,
{ "Configuration", "rpl.config",
FT_BYTES, BASE_NONE, NULL, 0x0,
"RPL Configuration", HFILL }},
{ &hf_rpl_flags,
{ "Flags", "rpl.flags",
FT_UINT8, BASE_HEX, NULL, 0x0,
"RPL Bit Significant Option Flags", HFILL }},
{ &hf_rpl_data,
{ "Data", "rpl.data",
FT_BYTES, BASE_NONE, NULL, 0x0,
"RPL Binary File Data", HFILL }},
{ &hf_rpl_ec,
{ "EC", "rpl.ec",
FT_BYTES, BASE_NONE, NULL, 0x0,
"RPL EC", HFILL }},
};
static gint *ett[] = {
&ett_rpl,
&ett_rpl_0004,
&ett_rpl_0008,
&ett_rpl_4003,
&ett_rpl_4006,
&ett_rpl_4007,
&ett_rpl_4009,
&ett_rpl_400a,
&ett_rpl_400b,
&ett_rpl_400c,
&ett_rpl_4011,
&ett_rpl_4018,
&ett_rpl_c005,
&ett_rpl_c014,
&ett_rpl_unkn
};
proto_rpl = proto_register_protocol("Remote Program Load", "RPL", "rpl");
proto_register_field_array(proto_rpl, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
rpl_handle = register_dissector("rpl", dissect_rpl, proto_rpl);
}
void
proto_reg_handoff_rpl(void)
{
dissector_add_uint("llc.dsap", SAP_RPL, rpl_handle);
}
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 8
* tab-width: 8
* indent-tabs-mode: t
* End:
*
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
* :indentSize=8:tabSize=8:noTabs=false:
*/
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