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/** @file
*
* Copyright 2004-2013, Irene Ruengeler <i.ruengeler [AT] fh-muenster.de>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef __TAP_SCTP_ANALYSIS_H__
#define __TAP_SCTP_ANALYSIS_H__
#include <stdbool.h>
#include <epan/dissectors/packet-sctp.h>
#include <epan/address.h>
#ifdef _WIN32
#include <winsock2.h>
#else
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define CHUNK_TYPE_LENGTH 1
#define CHUNK_FLAGS_LENGTH 1
#define CHUNK_LENGTH_LENGTH 2
#define CHUNK_HEADER_OFFSET 0
#define CHUNK_TYPE_OFFSET CHUNK_HEADER_OFFSET
#define CHUNK_FLAGS_OFFSET (CHUNK_TYPE_OFFSET + CHUNK_TYPE_LENGTH)
#define CHUNK_LENGTH_OFFSET (CHUNK_FLAGS_OFFSET + CHUNK_FLAGS_LENGTH)
#define CHUNK_VALUE_OFFSET (CHUNK_LENGTH_OFFSET + CHUNK_LENGTH_LENGTH)
#define INIT_CHUNK_INITIATE_TAG_LENGTH 4
#define INIT_CHUNK_ADV_REC_WINDOW_CREDIT_LENGTH 4
#define INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_LENGTH 2
#define INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_LENGTH 2
#define INIT_CHUNK_INITIATE_TAG_OFFSET CHUNK_VALUE_OFFSET
#define INIT_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET (INIT_CHUNK_INITIATE_TAG_OFFSET + \
INIT_CHUNK_INITIATE_TAG_LENGTH )
#define INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_OFFSET (INIT_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET + \
INIT_CHUNK_ADV_REC_WINDOW_CREDIT_LENGTH )
#define INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_OFFSET (INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_OFFSET + \
INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_LENGTH )
#define INIT_CHUNK_INITIAL_TSN_OFFSET (INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_OFFSET + \
INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_LENGTH )
#define DATA_CHUNK_TSN_LENGTH 4
#define DATA_CHUNK_TSN_OFFSET (CHUNK_VALUE_OFFSET + 0)
#define DATA_CHUNK_STREAM_ID_OFFSET (DATA_CHUNK_TSN_OFFSET + DATA_CHUNK_TSN_LENGTH)
#define DATA_CHUNK_STREAM_ID_LENGTH 2
#define DATA_CHUNK_STREAM_SEQ_NUMBER_LENGTH 2
#define DATA_CHUNK_PAYLOAD_PROTOCOL_ID_LENGTH 4
#define I_DATA_CHUNK_RESERVED_LENGTH 2
#define I_DATA_CHUNK_MID_LENGTH 4
#define I_DATA_CHUNK_PAYLOAD_PROTOCOL_ID_LENGTH 4
#define I_DATA_CHUNK_FSN_LENGTH 4
#define I_DATA_CHUNK_RESERVED_OFFSET (DATA_CHUNK_STREAM_ID_OFFSET + \
DATA_CHUNK_STREAM_ID_LENGTH)
#define I_DATA_CHUNK_MID_OFFSET (I_DATA_CHUNK_RESERVED_OFFSET + \
I_DATA_CHUNK_RESERVED_LENGTH)
#define I_DATA_CHUNK_PAYLOAD_PROTOCOL_ID_OFFSET (I_DATA_CHUNK_MID_OFFSET + \
I_DATA_CHUNK_MID_LENGTH)
#define I_DATA_CHUNK_FSN_OFFSET (I_DATA_CHUNK_MID_OFFSET + \
I_DATA_CHUNK_MID_LENGTH)
#define I_DATA_CHUNK_PAYLOAD_OFFSET (I_DATA_CHUNK_PAYLOAD_PROTOCOL_ID_OFFSET + \
I_DATA_CHUNK_PAYLOAD_PROTOCOL_ID_LENGTH)
#define DATA_CHUNK_HEADER_LENGTH (CHUNK_HEADER_LENGTH + \
DATA_CHUNK_TSN_LENGTH + \
DATA_CHUNK_STREAM_ID_LENGTH + \
DATA_CHUNK_STREAM_SEQ_NUMBER_LENGTH + \
DATA_CHUNK_PAYLOAD_PROTOCOL_ID_LENGTH)
#define I_DATA_CHUNK_HEADER_LENGTH (CHUNK_HEADER_LENGTH + \
DATA_CHUNK_TSN_LENGTH + \
DATA_CHUNK_STREAM_ID_LENGTH + \
I_DATA_CHUNK_RESERVED_LENGTH + \
I_DATA_CHUNK_MID_LENGTH +\
I_DATA_CHUNK_PAYLOAD_PROTOCOL_ID_LENGTH)
#define MAX_ADDRESS_LEN 47
#define SCTP_ABORT_CHUNK_T_BIT 0x01
#define PARAMETER_TYPE_LENGTH 2
#define PARAMETER_LENGTH_LENGTH 2
#define PARAMETER_HEADER_LENGTH (PARAMETER_TYPE_LENGTH + PARAMETER_LENGTH_LENGTH)
#define PARAMETER_HEADER_OFFSET 0
#define PARAMETER_TYPE_OFFSET PARAMETER_HEADER_OFFSET
#define PARAMETER_LENGTH_OFFSET (PARAMETER_TYPE_OFFSET + PARAMETER_TYPE_LENGTH)
#define PARAMETER_VALUE_OFFSET (PARAMETER_LENGTH_OFFSET + PARAMETER_LENGTH_LENGTH)
#define IPV6_ADDRESS_LENGTH 16
#define IPV6_ADDRESS_OFFSET PARAMETER_VALUE_OFFSET
#define IPV4_ADDRESS_LENGTH 4
#define IPV4_ADDRESS_OFFSET PARAMETER_VALUE_OFFSET
#define IPV4ADDRESS_PARAMETER_ID 0x0005
#define IPV6ADDRESS_PARAMETER_ID 0x0006
#define SACK_CHUNK_CUMULATIVE_TSN_ACK_LENGTH 4
#define SACK_CHUNK_CUMULATIVE_TSN_ACK_OFFSET (CHUNK_VALUE_OFFSET + 0)
#define SACK_CHUNK_ADV_REC_WINDOW_CREDIT_LENGTH 4
#define SACK_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET (SACK_CHUNK_CUMULATIVE_TSN_ACK_OFFSET + \
SACK_CHUNK_CUMULATIVE_TSN_ACK_LENGTH)
#define INIT_CHUNK_INITIAL_TSN_LENGTH 4
#define INIT_CHUNK_FIXED_PARAMETERS_LENGTH (INIT_CHUNK_INITIATE_TAG_LENGTH + \
INIT_CHUNK_ADV_REC_WINDOW_CREDIT_LENGTH + \
INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_LENGTH + \
INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_LENGTH + \
INIT_CHUNK_INITIAL_TSN_LENGTH)
#define CHUNK_HEADER_LENGTH (CHUNK_TYPE_LENGTH + \
CHUNK_FLAGS_LENGTH + \
CHUNK_LENGTH_LENGTH)
#define INIT_CHUNK_VARIABLE_LENGTH_PARAMETER_OFFSET (INIT_CHUNK_INITIAL_TSN_OFFSET + \
INIT_CHUNK_INITIAL_TSN_LENGTH )
/* The below value is 255 */
#define NUM_CHUNKS 0x100
/* This variable is used as an index into arrays
* which store the cumulative information corresponding
* all chunks with Chunk Type greater > 16
* The value for the below variable is 17
*/
#define OTHER_CHUNKS_INDEX 0xfe
/* VNB */
/* This variable stores the maximum chunk type value
* that can be associated with a sctp chunk.
*/
#define MAX_SCTP_CHUNK_TYPE 256
typedef struct _tsn {
guint32 frame_number;
guint32 secs; /* Absolute seconds */
guint32 usecs;
address src;
address dst;
guint32 first_tsn;
GList *tsns;
} tsn_t;
typedef struct _sctp_tmp_info {
guint16 assoc_id;
guint16 direction;
address src;
address dst;
guint16 port1;
guint16 port2;
guint32 verification_tag1;
guint32 verification_tag2;
guint32 initiate_tag;
guint32 n_tvbs;
} sctp_tmp_info_t;
typedef struct _sctp_init_collision {
guint32 init_vtag; /* initiate tag of the INIT chunk */
guint32 initack_vtag; /* initiate tag of the INIT-ACK chunk */
guint32 init_min_tsn; /* initial tsn of the INIT chunk */
guint32 initack_min_tsn; /* initial tsn of the INIT-ACK chunk */
bool init:1;
bool initack:1;
} sctp_init_collision_t;
struct tsn_sort{
guint32 tsnumber;
guint32 secs;
guint32 usecs;
guint32 offset;
guint32 length;
guint32 framenumber;
};
typedef struct _sctp_addr_chunk {
guint32 direction;
address addr;
/* The array is initialized to MAX_SCTP_CHUNK_TYPE
* so that there is no memory overwrite
* when accessed using sctp chunk type as index.
*/
guint32 addr_count[MAX_SCTP_CHUNK_TYPE];
} sctp_addr_chunk;
typedef struct _sctp_assoc_info {
guint16 assoc_id;
address src;
address dst;
guint16 port1;
guint16 port2;
guint32 verification_tag1;
guint32 verification_tag2;
guint32 initiate_tag;
guint32 n_tvbs;
GList *addr1;
GList *addr2;
guint16 instream1;
guint16 outstream1;
guint16 instream2;
guint16 outstream2;
guint32 n_adler32_calculated;
guint32 n_adler32_correct;
guint32 n_crc32c_calculated;
guint32 n_crc32c_correct;
gchar checksum_type[8];
guint32 n_checksum_errors;
guint32 n_bundling_errors;
guint32 n_padding_errors;
guint32 n_length_errors;
guint32 n_value_errors;
guint32 n_data_chunks;
guint32 n_forward_chunks;
guint32 n_forward_chunks_ep1;
guint32 n_forward_chunks_ep2;
guint32 n_data_bytes;
guint32 n_packets;
guint32 n_data_chunks_ep1;
guint32 n_data_bytes_ep1;
guint32 n_data_chunks_ep2;
guint32 n_data_bytes_ep2;
guint32 n_sack_chunks_ep1;
guint32 n_sack_chunks_ep2;
guint32 n_array_tsn1;
guint32 n_array_tsn2;
guint32 max_window1;
guint32 max_window2;
guint32 arwnd1;
guint32 arwnd2;
bool init:1;
bool initack:1;
bool firstdata:1;
bool init_collision:1;
guint16 initack_dir;
guint16 direction;
guint32 min_secs;
guint32 min_usecs;
guint32 max_secs;
guint32 max_usecs;
guint32 min_tsn1;
guint32 min_tsn2;
guint32 max_tsn1;
guint32 max_tsn2;
guint32 max_bytes1;
guint32 max_bytes2;
sctp_init_collision_t *dir1;
sctp_init_collision_t *dir2;
GSList *min_max;
GList *frame_numbers;
GList *tsn1;
GPtrArray *sort_tsn1;
GPtrArray *sort_sack1;
GList *sack1;
GList *tsn2;
GPtrArray *sort_tsn2;
GPtrArray *sort_sack2;
GList *sack2;
gboolean check_address;
GList* error_info_list;
/* The array is initialized to MAX_SCTP_CHUNK_TYPE
* so that there is no memory overwrite
* when accessed using sctp chunk type as index.
*/
guint32 chunk_count[MAX_SCTP_CHUNK_TYPE];
guint32 ep1_chunk_count[MAX_SCTP_CHUNK_TYPE];
guint32 ep2_chunk_count[MAX_SCTP_CHUNK_TYPE];
GList *addr_chunk_count;
} sctp_assoc_info_t;
typedef struct _sctp_error_info {
guint32 frame_number;
gchar chunk_info[200];
const gchar *info_text;
} sctp_error_info_t;
typedef struct _sctp_allassocs_info {
guint32 sum_tvbs;
GList *assoc_info_list;
gboolean is_registered;
GList *children;
} sctp_allassocs_info_t;
void register_tap_listener_sctp_stat(void);
const sctp_allassocs_info_t* sctp_stat_get_info(void);
void sctp_stat_scan(void);
void remove_tap_listener_sctp_stat(void);
const sctp_assoc_info_t* get_sctp_assoc_info(guint16 assoc_id);
const sctp_assoc_info_t* get_selected_assoc(void);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __TAP_SCTP_ANALYSIS_H__ */
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