1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
/* packet-cosine.c
* Routines for decoding CoSine IPNOS L2 debug output
*
* Motonori Shindo <motonori@shin.do>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
/*
* XXX TODO:
* o PPoATM and PPoFR encapsulation needs more test.
*
*/
#include "config.h"
#include <epan/packet.h>
#include <wiretap/wtap.h>
void proto_register_cosine(void);
void proto_reg_handoff_cosine(void);
static int proto_cosine;
static int hf_pro;
static int hf_off;
static int hf_pri;
static int hf_rm;
static int hf_err;
static int hf_sar;
static int hf_channel_id;
static int ett_raw;
static dissector_handle_t cosine_handle;
static dissector_handle_t eth_withoutfcs_handle;
static dissector_handle_t ppp_hdlc_handle;
static dissector_handle_t llc_handle;
static dissector_handle_t chdlc_handle;
static dissector_handle_t fr_handle;
static int
dissect_cosine(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
proto_tree *fh_tree;
proto_item *ti;
union wtap_pseudo_header *pseudo_header = pinfo->pseudo_header;
/* load the top pane info. This should be overwritten by
the next protocol in the stack */
col_set_str(pinfo->cinfo, COL_RES_DL_SRC, "N/A");
col_set_str(pinfo->cinfo, COL_RES_DL_DST, "N/A");
col_set_str(pinfo->cinfo, COL_PROTOCOL, "N/A");
col_set_str(pinfo->cinfo, COL_INFO, "CoSine IPNOS L2 debug output");
/* populate a tree in the second pane with the status of the link
layer (ie none) */
if(tree) {
ti = proto_tree_add_protocol_format(tree, proto_cosine, tvb, 0, 0,
"CoSine IPNOS L2 debug output (%s)",
pseudo_header->cosine.if_name);
fh_tree = proto_item_add_subtree(ti, ett_raw);
proto_tree_add_uint(fh_tree, hf_pro, tvb, 0, 0, pseudo_header->cosine.pro);
proto_tree_add_uint(fh_tree, hf_off, tvb, 0, 0, pseudo_header->cosine.off);
proto_tree_add_uint(fh_tree, hf_pri, tvb, 0, 0, pseudo_header->cosine.pri);
proto_tree_add_uint(fh_tree, hf_rm, tvb, 0, 0, pseudo_header->cosine.rm);
proto_tree_add_uint(fh_tree, hf_err, tvb, 0, 0, pseudo_header->cosine.err);
switch (pseudo_header->cosine.encap) {
case COSINE_ENCAP_ETH:
break;
case COSINE_ENCAP_ATM:
case COSINE_ENCAP_PPoATM:
proto_tree_add_item(fh_tree, hf_sar, tvb, 0, 16, ENC_NA);
break;
case COSINE_ENCAP_PPP:
case COSINE_ENCAP_FR:
case COSINE_ENCAP_PPoFR:
proto_tree_add_item(fh_tree, hf_channel_id, tvb, 0, 4, ENC_NA);
break;
case COSINE_ENCAP_HDLC:
if (pseudo_header->cosine.direction == COSINE_DIR_TX) {
proto_tree_add_item(fh_tree, hf_channel_id, tvb, 0, 2, ENC_NA);
} else if (pseudo_header->cosine.direction == COSINE_DIR_RX) {
proto_tree_add_item(fh_tree, hf_channel_id, tvb, 0, 4, ENC_NA);
}
break;
default:
break;
}
}
switch (pseudo_header->cosine.encap) {
case COSINE_ENCAP_ETH:
call_dissector(eth_withoutfcs_handle, tvb_new_subset_remaining(tvb, 0),
pinfo, tree);
break;
case COSINE_ENCAP_ATM:
case COSINE_ENCAP_PPoATM:
call_dissector(llc_handle, tvb_new_subset_remaining(tvb, 16),
pinfo, tree);
break;
case COSINE_ENCAP_PPP:
call_dissector(ppp_hdlc_handle, tvb_new_subset_remaining(tvb, 4),
pinfo, tree);
break;
case COSINE_ENCAP_HDLC:
if (pseudo_header->cosine.direction == COSINE_DIR_TX) {
call_dissector(chdlc_handle, tvb_new_subset_remaining(tvb, 2),
pinfo, tree);
} else if (pseudo_header->cosine.direction == COSINE_DIR_RX) {
call_dissector(chdlc_handle, tvb_new_subset_remaining(tvb, 4),
pinfo, tree);
}
break;
case COSINE_ENCAP_FR:
case COSINE_ENCAP_PPoFR:
call_dissector(fr_handle, tvb_new_subset_remaining(tvb, 4),
pinfo, tree);
break;
case COSINE_ENCAP_TEST:
case COSINE_ENCAP_UNKNOWN:
call_data_dissector(tvb, pinfo, tree);
break;
default:
break;
}
return tvb_captured_length(tvb);
}
void
proto_register_cosine(void)
{
static hf_register_info hf[] = {
{ &hf_pro,
{ "Protocol", "cosine.pro", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_off,
{ "Offset", "cosine.off", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_pri,
{ "Priority", "cosine.pri", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_rm,
{ "Rate Marking", "cosine.rm", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_err,
{ "Error Code", "cosine.err", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}},
{ &hf_sar,
{ "SAR header", "cosine.sar", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL}},
{ &hf_channel_id,
{ "Channel handle ID", "cosine.channel_id", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL}},
};
static int *ett[] = {
&ett_raw,
};
proto_cosine = proto_register_protocol("CoSine IPNOS L2 debug output",
"CoSine", "cosine");
proto_register_field_array(proto_cosine, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
cosine_handle = register_dissector("cosine", dissect_cosine, proto_cosine);
}
void
proto_reg_handoff_cosine(void)
{
/*
* Get handles for dissectors.
*/
eth_withoutfcs_handle = find_dissector_add_dependency("eth_withoutfcs", proto_cosine);
ppp_hdlc_handle = find_dissector_add_dependency("ppp_hdlc", proto_cosine);
llc_handle = find_dissector_add_dependency("llc", proto_cosine);
chdlc_handle = find_dissector_add_dependency("chdlc", proto_cosine);
fr_handle = find_dissector_add_dependency("fr", proto_cosine);
dissector_add_uint("wtap_encap", WTAP_ENCAP_COSINE, cosine_handle);
}
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local Variables:
* c-basic-offset: 2
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=2 tabstop=8 expandtab:
* :indentSize=2:tabSize=8:noTabs=true:
*/
|
