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/* packet-sccp.h
* Definitions for Signalling Connection Control Part (SCCP) dissection
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef __PACKET_SCCP_H
#define __PACKET_SCCP_H
#include "ws_symbol_export.h"
#define SCCP_MSG_TYPE_CR 0x01
#define SCCP_MSG_TYPE_CC 0x02
#define SCCP_MSG_TYPE_CREF 0x03
#define SCCP_MSG_TYPE_RLSD 0x04
#define SCCP_MSG_TYPE_RLC 0x05
#define SCCP_MSG_TYPE_DT1 0x06
#define SCCP_MSG_TYPE_DT2 0x07
#define SCCP_MSG_TYPE_AK 0x08
#define SCCP_MSG_TYPE_UDT 0x09
#define SCCP_MSG_TYPE_UDTS 0x0a
#define SCCP_MSG_TYPE_ED 0x0b
#define SCCP_MSG_TYPE_EA 0x0c
#define SCCP_MSG_TYPE_RSR 0x0d
#define SCCP_MSG_TYPE_RSC 0x0e
#define SCCP_MSG_TYPE_ERR 0x0f
#define SCCP_MSG_TYPE_IT 0x10
#define SCCP_MSG_TYPE_XUDT 0x11
#define SCCP_MSG_TYPE_XUDTS 0x12
#define SCCP_MSG_TYPE_LUDT 0x13
#define SCCP_MSG_TYPE_LUDTS 0x14
WS_DLL_PUBLIC const value_string sccp_message_type_acro_values[];
WS_DLL_PUBLIC const value_string sccp_release_cause_values[];
WS_DLL_PUBLIC const value_string sccp_return_cause_values[];
WS_DLL_PUBLIC const value_string sccp_reset_cause_values[];
WS_DLL_PUBLIC const value_string sccp_error_cause_values[];
WS_DLL_PUBLIC const value_string sccp_refusal_cause_values[];
/* from packet-sua.c */
WS_DLL_PUBLIC const value_string sua_co_class_type_acro_values[];
typedef enum _sccp_payload_t {
SCCP_PLOAD_NONE,
SCCP_PLOAD_BSSAP,
SCCP_PLOAD_RANAP,
SCCP_PLOAD_NUM_PLOADS
} sccp_payload_t;
typedef struct _sccp_msg_info_t {
unsigned framenum;
unsigned offset;
unsigned type;
union {
struct {
char* label;
char* comment;
char* imsi;
struct _sccp_assoc_info_t* assoc;
struct _sccp_msg_info_t* next;
} co;
struct {
uint8_t* calling_gt;
unsigned calling_ssn;
uint8_t* called_gt;
unsigned called_ssn;
} ud;
} data;
} sccp_msg_info_t;
typedef struct _sccp_assoc_info_t {
uint32_t id;
uint32_t calling_dpc;
uint32_t called_dpc;
uint8_t calling_ssn;
uint8_t called_ssn;
bool has_fw_key;
bool has_bw_key;
sccp_msg_info_t* msgs;
sccp_msg_info_t* curr_msg;
sccp_payload_t payload;
char* calling_party;
char* called_party;
char* extra_info;
char* imsi;
uint32_t app_info; /* used only by dissectors of protocols above SCCP */
} sccp_assoc_info_t;
typedef struct _sccp_decode_context_t {
uint8_t message_type;
unsigned dlr;
unsigned slr;
sccp_assoc_info_t* assoc;
sccp_msg_info_t* sccp_msg;
} sccp_decode_context_t;
extern sccp_assoc_info_t* get_sccp_assoc(packet_info* pinfo, unsigned offset, sccp_decode_context_t* value);
extern bool looks_like_valid_sccp(uint32_t frame_num, tvbuff_t *tvb, uint8_t my_mtp3_standard);
#define INVALID_LR 0xffffff /* a reserved value */
#define GT_SIGNAL_LENGTH 1
#define GT_ODD_SIGNAL_MASK 0x0f
#define GT_EVEN_SIGNAL_MASK 0xf0
#define GT_EVEN_SIGNAL_SHIFT 4
#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 */
WS_DLL_PUBLIC const value_string sccp_address_signal_values[];
#endif
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