Wireshark  4.3.0
The Wireshark network protocol analyzer
packet-sccp.h
1 /* packet-sccp.h
2  * Definitions for Signalling Connection Control Part (SCCP) dissection
3  *
4  * Wireshark - Network traffic analyzer
5  * By Gerald Combs <gerald@wireshark.org>
6  * Copyright 1998 Gerald Combs
7  *
8  * SPDX-License-Identifier: GPL-2.0-or-later
9  */
10 
11 #ifndef __PACKET_SCCP_H
12 #define __PACKET_SCCP_H
13 
14 #include "ws_symbol_export.h"
15 
16 #define SCCP_MSG_TYPE_CR 0x01
17 #define SCCP_MSG_TYPE_CC 0x02
18 #define SCCP_MSG_TYPE_CREF 0x03
19 #define SCCP_MSG_TYPE_RLSD 0x04
20 #define SCCP_MSG_TYPE_RLC 0x05
21 #define SCCP_MSG_TYPE_DT1 0x06
22 #define SCCP_MSG_TYPE_DT2 0x07
23 #define SCCP_MSG_TYPE_AK 0x08
24 #define SCCP_MSG_TYPE_UDT 0x09
25 #define SCCP_MSG_TYPE_UDTS 0x0a
26 #define SCCP_MSG_TYPE_ED 0x0b
27 #define SCCP_MSG_TYPE_EA 0x0c
28 #define SCCP_MSG_TYPE_RSR 0x0d
29 #define SCCP_MSG_TYPE_RSC 0x0e
30 #define SCCP_MSG_TYPE_ERR 0x0f
31 #define SCCP_MSG_TYPE_IT 0x10
32 #define SCCP_MSG_TYPE_XUDT 0x11
33 #define SCCP_MSG_TYPE_XUDTS 0x12
34 #define SCCP_MSG_TYPE_LUDT 0x13
35 #define SCCP_MSG_TYPE_LUDTS 0x14
36 
37 WS_DLL_PUBLIC const value_string sccp_message_type_acro_values[];
38 WS_DLL_PUBLIC const value_string sccp_release_cause_values[];
39 WS_DLL_PUBLIC const value_string sccp_return_cause_values[];
40 WS_DLL_PUBLIC const value_string sccp_reset_cause_values[];
41 WS_DLL_PUBLIC const value_string sccp_error_cause_values[];
42 WS_DLL_PUBLIC const value_string sccp_refusal_cause_values[];
43 
44 /* from packet-sua.c */
45 WS_DLL_PUBLIC const value_string sua_co_class_type_acro_values[];
46 
47 typedef enum _sccp_payload_t {
48  SCCP_PLOAD_NONE,
49  SCCP_PLOAD_BSSAP,
50  SCCP_PLOAD_RANAP,
51  SCCP_PLOAD_NUM_PLOADS
52 } sccp_payload_t;
53 
54 typedef struct _sccp_msg_info_t {
55  guint framenum;
56  guint offset;
57  guint type;
58 
59  union {
60  struct {
61  gchar* label;
62  gchar* comment;
63  gchar* imsi;
64  struct _sccp_assoc_info_t* assoc;
65  struct _sccp_msg_info_t* next;
66  } co;
67  struct {
68  guint8* calling_gt;
69  guint calling_ssn;
70  guint8* called_gt;
71  guint called_ssn;
72  } ud;
73  } data;
75 
76 typedef struct _sccp_assoc_info_t {
77  guint32 id;
78  guint32 calling_dpc;
79  guint32 called_dpc;
80  guint8 calling_ssn;
81  guint8 called_ssn;
82  gboolean has_fw_key;
83  gboolean has_bw_key;
84  sccp_msg_info_t* msgs;
85  sccp_msg_info_t* curr_msg;
86 
87  sccp_payload_t payload;
88  gchar* calling_party;
89  gchar* called_party;
90  gchar* extra_info;
91  gchar* imsi;
92  guint32 app_info; /* used only by dissectors of protocols above SCCP */
93 
95 
96 typedef struct _sccp_decode_context_t {
97  guint8 message_type;
98  guint dlr;
99  guint slr;
100  sccp_assoc_info_t* assoc;
101  sccp_msg_info_t* sccp_msg;
102 
104 
105 extern sccp_assoc_info_t* get_sccp_assoc(packet_info* pinfo, guint offset, sccp_decode_context_t* value);
106 extern gboolean looks_like_valid_sccp(guint32 frame_num, tvbuff_t *tvb, guint8 my_mtp3_standard);
107 
108 #define INVALID_LR 0xffffff /* a reserved value */
109 
110 #define GT_SIGNAL_LENGTH 1
111 #define GT_ODD_SIGNAL_MASK 0x0f
112 #define GT_EVEN_SIGNAL_MASK 0xf0
113 #define GT_EVEN_SIGNAL_SHIFT 4
114 #define GT_MAX_SIGNALS (32*7) /* it's a bit big, but it allows for adding a lot of "(spare)" and "Unknown" values (7 chars) if there are errors - e.g. ANSI vs ITU wrongly selected */
115 WS_DLL_PUBLIC const value_string sccp_address_signal_values[];
116 
117 #endif
Definition: packet_info.h:44
Definition: packet-sccp.h:76
Definition: packet-sccp.h:96
Definition: packet-sccp.h:54
Definition: value_string.h:26
Definition: tvbuff-int.h:35