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
|
/* packet-m2ap.c
* Routines for M2 Application Protocol packet dissection
* Copyright 2016, Pascal Quantin <pascal.quantin@gmail.com>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*
* Reference: 3GPP TS 36.443 v15.0.0
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/sctpppids.h>
#include <epan/asn1.h>
#include <epan/expert.h>
#include "packet-per.h"
#include "packet-e212.h"
#define PNAME "M2 Application Protocol"
#define PSNAME "M2AP"
#define PFNAME "m2ap"
void proto_register_m2ap(void);
void proto_reg_handoff_m2ap(void);
/* M2AP uses port 36443 as recommended by IANA. */
#define M2AP_PORT 36443
#include "packet-m2ap-val.h"
/* Initialize the protocol and registered fields */
static int proto_m2ap = -1;
static int hf_m2ap_IPAddress_v4 = -1;
static int hf_m2ap_IPAddress_v6 = -1;
#include "packet-m2ap-hf.c"
/* Initialize the subtree pointers */
static int ett_m2ap = -1;
static int ett_m2ap_PLMN_Identity = -1;
static int ett_m2ap_IPAddress = -1;
#include "packet-m2ap-ett.c"
static expert_field ei_m2ap_invalid_ip_address_len = EI_INIT;
enum{
INITIATING_MESSAGE,
SUCCESSFUL_OUTCOME,
UNSUCCESSFUL_OUTCOME
};
/* Global variables */
static guint32 ProcedureCode;
static guint32 ProtocolIE_ID;
static guint32 message_type;
static dissector_handle_t m2ap_handle;
/* Dissector tables */
static dissector_table_t m2ap_ies_dissector_table;
static dissector_table_t m2ap_extension_dissector_table;
static dissector_table_t m2ap_proc_imsg_dissector_table;
static dissector_table_t m2ap_proc_sout_dissector_table;
static dissector_table_t m2ap_proc_uout_dissector_table;
static int dissect_ProtocolIEFieldValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
static int dissect_ProtocolExtensionFieldExtensionValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
static int dissect_InitiatingMessageValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
static int dissect_SuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
static int dissect_UnsuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
#include "packet-m2ap-fn.c"
static int
dissect_ProtocolIEFieldValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
return (dissector_try_uint_new(m2ap_ies_dissector_table, ProtocolIE_ID, tvb, pinfo, tree, FALSE, NULL)) ? tvb_captured_length(tvb) : 0;
}
static int
dissect_ProtocolExtensionFieldExtensionValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
return (dissector_try_uint_new(m2ap_extension_dissector_table, ProtocolIE_ID, tvb, pinfo, tree, FALSE, NULL)) ? tvb_captured_length(tvb) : 0;
}
static int
dissect_InitiatingMessageValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
return (dissector_try_uint_new(m2ap_proc_imsg_dissector_table, ProcedureCode, tvb, pinfo, tree, FALSE, NULL)) ? tvb_captured_length(tvb) : 0;
}
static int
dissect_SuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
return (dissector_try_uint_new(m2ap_proc_sout_dissector_table, ProcedureCode, tvb, pinfo, tree, FALSE, NULL)) ? tvb_captured_length(tvb) : 0;
}
static int
dissect_UnsuccessfulOutcomeValue(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
return (dissector_try_uint_new(m2ap_proc_uout_dissector_table, ProcedureCode, tvb, pinfo, tree, FALSE, NULL)) ? tvb_captured_length(tvb) : 0;
}
static int
dissect_m2ap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
proto_item *m2ap_item = NULL;
proto_tree *m2ap_tree = NULL;
/* make entry in the Protocol column on summary display */
col_set_str(pinfo->cinfo, COL_PROTOCOL, PSNAME);
col_clear_fence(pinfo->cinfo, COL_INFO);
col_clear(pinfo->cinfo, COL_INFO);
m2ap_item = proto_tree_add_item(tree, proto_m2ap, tvb, 0, -1, ENC_NA);
m2ap_tree = proto_item_add_subtree(m2ap_item, ett_m2ap);
dissect_M2AP_PDU_PDU(tvb, pinfo, m2ap_tree, NULL);
return tvb_captured_length(tvb);
}
void
proto_register_m2ap(void) {
/* List of fields */
static hf_register_info hf[] = {
{ &hf_m2ap_IPAddress_v4,
{ "IPAddress", "m2ap.IPAddress_v4",
FT_IPv4, BASE_NONE, NULL, 0,
NULL, HFILL }
},
{ &hf_m2ap_IPAddress_v6,
{ "IPAddress", "m2ap.IPAddress_v6",
FT_IPv6, BASE_NONE, NULL, 0,
NULL, HFILL }
},
#include "packet-m2ap-hfarr.c"
};
/* List of subtrees */
static gint *ett[] = {
&ett_m2ap,
&ett_m2ap_PLMN_Identity,
&ett_m2ap_IPAddress,
#include "packet-m2ap-ettarr.c"
};
expert_module_t* expert_m2ap;
static ei_register_info ei[] = {
{ &ei_m2ap_invalid_ip_address_len, { "m2ap.invalid_ip_address_len", PI_MALFORMED, PI_ERROR, "Invalid IP address length", EXPFILL }}
};
/* Register protocol */
proto_m2ap = proto_register_protocol(PNAME, PSNAME, PFNAME);
/* Register fields and subtrees */
proto_register_field_array(proto_m2ap, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
expert_m2ap = expert_register_protocol(proto_m2ap);
expert_register_field_array(expert_m2ap, ei, array_length(ei));
/* Register dissector */
m2ap_handle = register_dissector(PFNAME, dissect_m2ap, proto_m2ap);
/* Register dissector tables */
m2ap_ies_dissector_table = register_dissector_table("m2ap.ies", "M2AP-PROTOCOL-IES", proto_m2ap, FT_UINT32, BASE_DEC);
m2ap_extension_dissector_table = register_dissector_table("m2ap.extension", "M2AP-PROTOCOL-EXTENSION", proto_m2ap, FT_UINT32, BASE_DEC);
m2ap_proc_imsg_dissector_table = register_dissector_table("m2ap.proc.imsg", "M2AP-ELEMENTARY-PROCEDURE InitiatingMessage", proto_m2ap, FT_UINT32, BASE_DEC);
m2ap_proc_sout_dissector_table = register_dissector_table("m2ap.proc.sout", "M2AP-ELEMENTARY-PROCEDURE SuccessfulOutcome", proto_m2ap, FT_UINT32, BASE_DEC);
m2ap_proc_uout_dissector_table = register_dissector_table("m2ap.proc.uout", "M2AP-ELEMENTARY-PROCEDURE UnsuccessfulOutcome", proto_m2ap, FT_UINT32, BASE_DEC);
}
void
proto_reg_handoff_m2ap(void)
{
dissector_add_uint("sctp.ppi", PROTO_3GPP_M2AP_PROTOCOL_ID, m2ap_handle);
dissector_add_uint("sctp.port", M2AP_PORT, m2ap_handle);
#include "packet-m2ap-dis-tab.c"
}
|
