forked from osmocom/wireshark
1295 lines
53 KiB
C
1295 lines
53 KiB
C
/*
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* Copyright 2004-2013, Irene Ruengeler <i.ruengeler [AT] fh-muenster.de>
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "config.h"
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#include <string.h>
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#include <math.h>
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#include <glib.h>
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#include "epan/packet_info.h"
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#include "epan/tap.h"
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#include "epan/value_string.h"
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#include "ui/tap-sctp-analysis.h"
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#include "ui/simple_dialog.h"
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#define FORWARD_STREAM 0
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#define BACKWARD_STREAM 1
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#define FORWARD_ADD_FORWARD_VTAG 2
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#define BACKWARD_ADD_FORWARD_VTAG 3
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#define BACKWARD_ADD_BACKWARD_VTAG 4
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#define ADDRESS_FORWARD_STREAM 5
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#define ADDRESS_BACKWARD_STREAM 6
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#define ADDRESS_FORWARD_ADD_FORWARD_VTAG 7
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#define ADDRESS_BACKWARD_ADD_FORWARD_VTAG 8
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#define ADDRESS_BACKWARD_ADD_BACKWARD_VTAG 9
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#define ASSOC_NOT_FOUND 10
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static sctp_allassocs_info_t sctp_tapinfo_struct = {0, NULL, FALSE, NULL};
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static void
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free_first(gpointer data, gpointer user_data _U_)
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{
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g_free(data);
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}
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static void
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tsn_free(gpointer data)
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{
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tsn_t *tsn;
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tsn = (tsn_t *) data;
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if (tsn->tsns != NULL)
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{
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g_list_free_full(tsn->tsns, g_free);
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}
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free_address(&tsn->src);
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free_address(&tsn->dst);
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g_free(tsn);
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}
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static void
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chunk_free(gpointer data)
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{
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sctp_addr_chunk *chunk = (sctp_addr_chunk *) data;
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free_address(&chunk->addr);
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g_free(chunk);
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}
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static void
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store_free(gpointer data)
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{
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address *addr = (address *) data;
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free_address(addr);
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g_free(addr);
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}
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static void
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reset(void *arg)
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{
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sctp_allassocs_info_t *tapdata = (sctp_allassocs_info_t *)arg;
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GList* list;
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sctp_assoc_info_t * info;
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list = g_list_first(tapdata->assoc_info_list);
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while (list)
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{
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info = (sctp_assoc_info_t *) (list->data);
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if (info->addr1 != NULL)
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{
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g_list_free_full(info->addr1, store_free);
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info->addr1 = NULL;
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}
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if (info->addr2 != NULL)
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{
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g_list_free_full(info->addr2, store_free);
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info->addr2 = NULL;
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}
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if (info->error_info_list != NULL)
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{
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g_list_free_full(info->error_info_list, g_free);
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info->error_info_list = NULL;
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}
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if (info->frame_numbers != NULL)
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{
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g_list_free(info->frame_numbers);
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info->frame_numbers = NULL;
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}
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if (info->tsn1 != NULL)
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{
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g_list_free_full(info->tsn1, tsn_free);
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info->tsn1 = NULL;
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}
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if (info->tsn2 != NULL)
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{
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g_list_free_full(info->tsn2, tsn_free);
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info->tsn2 = NULL;
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}
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if (info->sack1 != NULL)
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{
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g_list_free_full(info->sack1, tsn_free);
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info->sack1 = NULL;
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}
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if (info->sack2 != NULL)
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{
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g_list_free_full(info->sack2, tsn_free);
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info->sack2 = NULL;
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}
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if (info->sort_tsn1 != NULL)
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g_ptr_array_free(info->sort_tsn1, TRUE);
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if (info->sort_tsn2 != NULL)
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g_ptr_array_free(info->sort_tsn2, TRUE);
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if (info->sort_sack1 != NULL)
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g_ptr_array_free(info->sort_sack1, TRUE);
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if (info->sort_sack2 != NULL)
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g_ptr_array_free(info->sort_sack2, TRUE);
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if (info->min_max != NULL)
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{
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g_slist_foreach(info->min_max, free_first, NULL);
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info->min_max = NULL;
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}
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if (info->addr_chunk_count) {
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g_list_free_full(info->addr_chunk_count, chunk_free);
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}
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g_free(info->dir1);
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g_free(info->dir2);
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free_address(&info->src);
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free_address(&info->dst);
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g_free(list->data);
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list = g_list_next(list);
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}
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g_list_free(tapdata->assoc_info_list);
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tapdata->sum_tvbs = 0;
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tapdata->assoc_info_list = NULL;
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}
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static sctp_assoc_info_t *
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calc_checksum(const struct _sctp_info *check_data, sctp_assoc_info_t *data)
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{
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gboolean ok = FALSE;
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if (check_data->adler32_calculated)
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{
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data->n_adler32_calculated++;
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if (check_data->adler32_correct)
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data->n_adler32_correct++;
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}
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if (check_data->crc32c_calculated)
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{
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data->n_crc32c_calculated++;
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if (check_data->crc32c_correct)
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data->n_crc32c_correct++;
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}
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if (data->n_adler32_calculated > 0)
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{
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if ((float)(data->n_adler32_correct*1.0/data->n_adler32_calculated) > 0.5)
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{
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char str[] = "ADLER32";
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(void) g_strlcpy(data->checksum_type, str, strlen(str));
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data->n_checksum_errors=(data->n_adler32_calculated-data->n_adler32_correct);
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ok = TRUE;
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}
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}
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if (data->n_crc32c_calculated>0)
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{
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if ((float)(data->n_crc32c_correct*1.0/data->n_crc32c_calculated) > 0.5)
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{
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char str[] = "CRC32C";
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(void) g_strlcpy(data->checksum_type, str, strlen(str));
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data->n_checksum_errors=data->n_crc32c_calculated-data->n_crc32c_correct;
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ok = TRUE;
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}
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}
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if (!ok)
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{
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char str[] = "UNKNOWN";
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(void) g_strlcpy(data->checksum_type, str, strlen(str));
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data->n_checksum_errors=0;
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}
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return(data);
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}
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static sctp_assoc_info_t *
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find_assoc(sctp_tmp_info_t *needle)
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{
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sctp_allassocs_info_t *assoc_info;
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sctp_assoc_info_t *info = NULL;
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GList* list;
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assoc_info = &sctp_tapinfo_struct;
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if ((list = g_list_last(assoc_info->assoc_info_list))!=NULL)
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{
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while (list)
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{
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info = (sctp_assoc_info_t*)(list->data);
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if (needle->assoc_id == info->assoc_id)
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return info;
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list = g_list_previous(list);
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}
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}
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return NULL;
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}
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static sctp_assoc_info_t *
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add_chunk_count(address *vadd, sctp_assoc_info_t *info, guint32 direction, guint32 type)
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{
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GList *list;
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sctp_addr_chunk *ch=NULL;
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int i;
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list = g_list_first(info->addr_chunk_count);
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while (list)
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{
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ch = (sctp_addr_chunk *)(list->data);
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if (ch->direction == direction)
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{
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if (addresses_equal(vadd, &ch->addr))
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{
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if (IS_SCTP_CHUNK_TYPE(type))
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ch->addr_count[type]++;
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else
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ch->addr_count[OTHER_CHUNKS_INDEX]++;
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return info;
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}
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else
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{
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list = g_list_next(list);
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}
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}
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else
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list = g_list_next(list);
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}
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ch = g_new(sctp_addr_chunk, 1);
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ch->direction = direction;
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copy_address(&ch->addr, vadd);
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for (i=0; i < NUM_CHUNKS; i++)
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ch->addr_count[i] = 0;
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if (IS_SCTP_CHUNK_TYPE(type))
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ch->addr_count[type]++;
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else
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ch->addr_count[OTHER_CHUNKS_INDEX]++;
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info->addr_chunk_count = g_list_append(info->addr_chunk_count, ch);
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return info;
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}
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static sctp_assoc_info_t *
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add_address(address *vadd, sctp_assoc_info_t *info, guint16 direction)
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{
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GList *list;
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address *v=NULL;
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if (direction == 1)
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list = g_list_first(info->addr1);
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else
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list = g_list_first(info->addr2);
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while (list)
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{
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v = (address *) (list->data);
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if (addresses_equal(vadd, v)) {
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free_address(vadd);
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g_free(vadd);
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return info;
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}
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list = g_list_next(list);
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}
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if (direction == 1)
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info->addr1 = g_list_append(info->addr1, vadd);
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else if (direction==2)
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info->addr2 = g_list_append(info->addr2, vadd);
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return info;
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}
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static tap_packet_status
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packet(void *tapdata _U_, packet_info *pinfo, epan_dissect_t *edt _U_, const void *data, tap_flags_t flags _U_)
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{
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const struct _sctp_info *sctp_info = (const struct _sctp_info *)data;
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guint32 chunk_number = 0, tsnumber, framenumber;
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sctp_tmp_info_t tmp_info;
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sctp_assoc_info_t *info = NULL;
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sctp_error_info_t *error = NULL;
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guint16 type, length = 0;
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address *store = NULL;
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tsn_t *tsn = NULL;
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tsn_t *sack = NULL;
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guint8 *t_s_n = NULL;
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gboolean sackchunk = FALSE;
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gboolean datachunk = FALSE;
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gboolean forwardchunk = FALSE;
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struct tsn_sort *tsn_s;
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int i;
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guint8 idx = 0;
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gboolean tsn_used = FALSE;
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gboolean sack_used = FALSE;
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framenumber = pinfo->num;
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type = sctp_info->ip_src.type;
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if (type == AT_IPv4 || type == AT_IPv6)
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copy_address(&tmp_info.src, &sctp_info->ip_src);
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else
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set_address(&tmp_info.src, AT_NONE, 0, NULL);
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type = sctp_info->ip_dst.type;
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if (type == AT_IPv4 || type == AT_IPv6)
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copy_address(&tmp_info.dst, &sctp_info->ip_dst);
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else
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set_address(&tmp_info.dst, AT_NONE, 0, NULL);
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tmp_info.port1 = sctp_info->sport;
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tmp_info.port2 = sctp_info->dport;
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if (sctp_info->vtag_reflected)
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{
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tmp_info.verification_tag2 = sctp_info->verification_tag;
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tmp_info.verification_tag1 = 0;
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}
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else
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{
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tmp_info.verification_tag1 = sctp_info->verification_tag;
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tmp_info.verification_tag2 = 0;
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}
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tmp_info.n_tvbs = 0;
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if (tvb_get_guint8(sctp_info->tvb[0],0) == SCTP_INIT_CHUNK_ID)
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{
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tmp_info.initiate_tag = tvb_get_ntohl(sctp_info->tvb[0], 4);
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}
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else
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{
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tmp_info.initiate_tag = 0;
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}
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tmp_info.direction = sctp_info->direction;
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tmp_info.assoc_id = sctp_info->assoc_index;
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info = find_assoc(&tmp_info);
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if (!info)
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{
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tmp_info.n_tvbs = sctp_info->number_of_tvbs;
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sctp_tapinfo_struct.sum_tvbs+=sctp_info->number_of_tvbs;
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if (sctp_info->number_of_tvbs > 0)
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{
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info = g_new0(sctp_assoc_info_t, 1);
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info->assoc_id = sctp_info->assoc_index;
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copy_address(&info->src, &tmp_info.src);
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copy_address(&info->dst, &tmp_info.dst);
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info->port1 = tmp_info.port1;
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info->port2 = tmp_info.port2;
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info->verification_tag1 = tmp_info.verification_tag1;
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info->verification_tag2 = tmp_info.verification_tag2;
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info->initiate_tag = tmp_info.initiate_tag;
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info->n_tvbs = tmp_info.n_tvbs;
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info->init = FALSE;
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info->initack = FALSE;
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info->check_address = FALSE;
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info->firstdata = TRUE;
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info->direction = sctp_info->direction;
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info->instream1 = 0;
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info->outstream1 = 0;
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info->instream2 = 0;
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info->outstream2 = 0;
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info = calc_checksum(sctp_info, info);
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info->n_packets = 1;
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info->error_info_list = NULL;
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info->min_secs = 0xffffffff;
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info->min_usecs = 0xffffffff;
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info->max_secs = 0;
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info->max_usecs = 0;
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info->min_tsn2 = 0xFFFFFFFF;
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info->min_tsn1 = 0xffffffff;
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info->max_tsn1 = 0;
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info->max_tsn2 = 0;
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info->max_bytes1 = 0;
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info->max_bytes2 = 0;
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info->n_data_chunks = 0;
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info->n_data_bytes = 0;
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info->n_data_chunks_ep1 = 0;
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info->n_data_bytes_ep1 = 0;
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info->n_data_chunks_ep2 = 0;
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info->n_data_bytes_ep2 = 0;
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info->n_sack_chunks_ep1 = 0;
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info->n_sack_chunks_ep2 = 0;
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info->n_array_tsn1 = 0;
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info->n_array_tsn2 = 0;
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info->n_forward_chunks = 0;
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info->max_window1 = 0;
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info->max_window2 = 0;
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info->min_max = NULL;
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info->sort_tsn1 = g_ptr_array_new_with_free_func(g_free);
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info->sort_tsn2 = g_ptr_array_new_with_free_func(g_free);
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info->sort_sack1 = g_ptr_array_new_with_free_func(g_free);
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info->sort_sack2 = g_ptr_array_new_with_free_func(g_free);
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info->dir1 = g_new0(sctp_init_collision_t, 1);
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info->dir1->init_min_tsn = 0xffffffff;
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info->dir1->initack_min_tsn = 0xffffffff;
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info->dir2 = g_new0(sctp_init_collision_t, 1);
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info->dir2->init_min_tsn = 0xffffffff;
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info->dir2->initack_min_tsn = 0xffffffff;
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for (i=0; i < NUM_CHUNKS; i++)
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{
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info->chunk_count[i] = 0;
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info->ep1_chunk_count[i] = 0;
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info->ep2_chunk_count[i] = 0;
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}
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info->addr_chunk_count = NULL;
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if (((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_INIT_CHUNK_ID) ||
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((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_INIT_ACK_CHUNK_ID) ||
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((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_DATA_CHUNK_ID) ||
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((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_I_DATA_CHUNK_ID) ||
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((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_SACK_CHUNK_ID) ||
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((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_NR_SACK_CHUNK_ID) ||
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((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_FORWARD_TSN_CHUNK_ID))
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{
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tsn = g_new0(tsn_t, 1);
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copy_address(&tsn->src, &tmp_info.src);
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copy_address(&tsn->dst, &tmp_info.dst);
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sack = g_new0(tsn_t, 1);
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copy_address(&sack->src, &tmp_info.src);
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copy_address(&sack->dst, &tmp_info.dst);
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sack->secs=tsn->secs = (guint32)pinfo->rel_ts.secs;
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sack->usecs=tsn->usecs = (guint32)pinfo->rel_ts.nsecs/1000;
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if (((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_DATA_CHUNK_ID) ||
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((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_I_DATA_CHUNK_ID) ||
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((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_SACK_CHUNK_ID) ||
|
|
((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_NR_SACK_CHUNK_ID) ||
|
|
((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_FORWARD_TSN_CHUNK_ID))
|
|
{
|
|
if (tsn->secs < info->min_secs)
|
|
{
|
|
info->min_secs = tsn->secs;
|
|
info->min_usecs = tsn->usecs;
|
|
}
|
|
else if (tsn->secs == info->min_secs && tsn->usecs < info->min_usecs)
|
|
info->min_usecs = tsn->usecs;
|
|
|
|
if (tsn->secs > info->max_secs)
|
|
{
|
|
info->max_secs = tsn->secs;
|
|
info->max_usecs = tsn->usecs;
|
|
}
|
|
else if (tsn->secs == info->max_secs && tsn->usecs > info->max_usecs)
|
|
info->max_usecs = tsn->usecs;
|
|
}
|
|
|
|
sack->frame_number = tsn->frame_number = pinfo->num;
|
|
}
|
|
if ((tvb_get_guint8(sctp_info->tvb[0],0) == SCTP_INIT_CHUNK_ID) || (tvb_get_guint8(sctp_info->tvb[0],0) == SCTP_INIT_ACK_CHUNK_ID))
|
|
{
|
|
info->min_tsn1 = tvb_get_ntohl(sctp_info->tvb[0],INIT_CHUNK_INITIAL_TSN_OFFSET);
|
|
info->verification_tag2 = tvb_get_ntohl(sctp_info->tvb[0], INIT_CHUNK_INITIATE_TAG_OFFSET);
|
|
info->instream1 = tvb_get_ntohs(sctp_info->tvb[0],INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_OFFSET);
|
|
info->outstream1 = tvb_get_ntohs(sctp_info->tvb[0],INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_OFFSET);
|
|
info->arwnd1 = tvb_get_ntohl(sctp_info->tvb[0], INIT_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET);
|
|
for (chunk_number = 1; chunk_number < sctp_info->number_of_tvbs; chunk_number++)
|
|
{
|
|
type = tvb_get_ntohs(sctp_info->tvb[chunk_number],0);
|
|
if (type == IPV4ADDRESS_PARAMETER_ID)
|
|
{
|
|
store = g_new(address, 1);
|
|
alloc_address_tvb(NULL, store, AT_IPv4, 4, sctp_info->tvb[chunk_number], IPV4_ADDRESS_OFFSET);
|
|
info = add_address(store, info, info->direction);
|
|
}
|
|
else if (type == IPV6ADDRESS_PARAMETER_ID)
|
|
{
|
|
store = g_new(address, 1);
|
|
alloc_address_tvb(NULL, store, AT_IPv6, 16, sctp_info->tvb[chunk_number], IPV6_ADDRESS_OFFSET);
|
|
info = add_address(store, info, info->direction);
|
|
}
|
|
}
|
|
|
|
if (tvb_get_guint8(sctp_info->tvb[0],0) == SCTP_INIT_CHUNK_ID)
|
|
{
|
|
info->init = TRUE;
|
|
}
|
|
else
|
|
{
|
|
info->initack_dir = 1;
|
|
info->initack = TRUE;
|
|
}
|
|
|
|
idx = tvb_get_guint8(sctp_info->tvb[0],0);
|
|
if (!IS_SCTP_CHUNK_TYPE(idx))
|
|
idx = OTHER_CHUNKS_INDEX;
|
|
|
|
info->chunk_count[idx]++;
|
|
info->ep1_chunk_count[idx]++;
|
|
info = add_chunk_count(&tmp_info.src, info, 1, idx);
|
|
if (info->direction == 1) {
|
|
if (tvb_get_guint8(sctp_info->tvb[0],0) == SCTP_INIT_CHUNK_ID) {
|
|
info->dir1->init = TRUE;
|
|
info->dir1->init_min_tsn = info->min_tsn1;
|
|
info->dir1->init_vtag = info->verification_tag2;
|
|
} else if (tvb_get_guint8(sctp_info->tvb[0],0) == SCTP_INIT_ACK_CHUNK_ID) {
|
|
info->dir1->initack = TRUE;
|
|
info->dir1->initack_min_tsn = info->min_tsn1;
|
|
info->dir1->initack_vtag = info->verification_tag2;
|
|
}
|
|
} else {
|
|
if (tvb_get_guint8(sctp_info->tvb[0],0) == SCTP_INIT_CHUNK_ID) {
|
|
info->dir2->init = TRUE;
|
|
info->dir2->init_min_tsn = info->min_tsn1;
|
|
info->dir2->init_vtag = info->verification_tag2;
|
|
} else if (tvb_get_guint8(sctp_info->tvb[0],0) == SCTP_INIT_ACK_CHUNK_ID) {
|
|
info->dir2->initack = TRUE;
|
|
info->dir2->initack_min_tsn = info->min_tsn1;
|
|
info->dir2->initack_vtag = info->verification_tag2;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_INIT_CHUNK_ID) &&
|
|
((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_INIT_ACK_CHUNK_ID) &&
|
|
((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_DATA_CHUNK_ID) &&
|
|
((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_I_DATA_CHUNK_ID) &&
|
|
((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_SACK_CHUNK_ID) &&
|
|
((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_NR_SACK_CHUNK_ID) &&
|
|
((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_FORWARD_TSN_CHUNK_ID))
|
|
{
|
|
tsn = g_new0(tsn_t, 1);
|
|
sack = g_new0(tsn_t, 1);
|
|
}
|
|
for (chunk_number = 0; chunk_number < sctp_info->number_of_tvbs; chunk_number++)
|
|
{
|
|
idx = tvb_get_guint8(sctp_info->tvb[0],0);
|
|
if (!IS_SCTP_CHUNK_TYPE(idx))
|
|
idx = OTHER_CHUNKS_INDEX;
|
|
|
|
info->chunk_count[idx]++;
|
|
info->ep1_chunk_count[idx]++;
|
|
info = add_chunk_count(&tmp_info.src, info, 1, idx);
|
|
|
|
if ((tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_DATA_CHUNK_ID) ||
|
|
(tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_I_DATA_CHUNK_ID))
|
|
{
|
|
datachunk = TRUE;
|
|
if (tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_DATA_CHUNK_ID) {
|
|
length = tvb_get_ntohs(sctp_info->tvb[chunk_number], CHUNK_LENGTH_OFFSET) - DATA_CHUNK_HEADER_LENGTH;
|
|
} else {
|
|
length = tvb_get_ntohs(sctp_info->tvb[chunk_number], CHUNK_LENGTH_OFFSET) - I_DATA_CHUNK_HEADER_LENGTH;
|
|
}
|
|
info->n_data_chunks++;
|
|
info->n_data_bytes+=length;
|
|
info->outstream1 = tvb_get_ntohs((sctp_info->tvb)[chunk_number], DATA_CHUNK_STREAM_ID_OFFSET)+1;
|
|
}
|
|
if ((tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_FORWARD_TSN_CHUNK_ID))
|
|
{
|
|
forwardchunk = TRUE;
|
|
length = tvb_get_ntohs(sctp_info->tvb[chunk_number], CHUNK_LENGTH_OFFSET);
|
|
info->n_forward_chunks++;
|
|
}
|
|
if (datachunk || forwardchunk)
|
|
{
|
|
tsnumber = tvb_get_ntohl((sctp_info->tvb)[chunk_number], DATA_CHUNK_TSN_OFFSET);
|
|
info->firstdata = FALSE;
|
|
if (tsnumber < info->min_tsn1)
|
|
info->min_tsn1 = tsnumber;
|
|
if (tsnumber > info->max_tsn1)
|
|
{
|
|
if (datachunk)
|
|
{
|
|
info->n_data_chunks_ep1++;
|
|
info->n_data_bytes_ep1+=length;
|
|
}
|
|
else
|
|
info->n_forward_chunks_ep1++;
|
|
info->max_tsn1 = tsnumber;
|
|
}
|
|
if (tsn->first_tsn == 0)
|
|
tsn->first_tsn = tsnumber;
|
|
if (datachunk)
|
|
{
|
|
t_s_n = (guint8 *)g_malloc(16);
|
|
tvb_memcpy(sctp_info->tvb[chunk_number], (guint8 *)(t_s_n),0, 16);
|
|
}
|
|
else
|
|
{
|
|
t_s_n = (guint8 *)g_malloc(length);
|
|
tvb_memcpy(sctp_info->tvb[chunk_number], (guint8 *)(t_s_n),0, length);
|
|
}
|
|
tsn->tsns = g_list_append(tsn->tsns, t_s_n);
|
|
tsn_s = g_new(struct tsn_sort, 1);
|
|
tsn_s->tsnumber = tsnumber;
|
|
tsn_s->secs = tsn->secs = (guint32)pinfo->rel_ts.secs;
|
|
tsn_s->usecs = tsn->usecs = (guint32)pinfo->rel_ts.nsecs/1000;
|
|
tsn_s->offset = 0;
|
|
tsn_s->framenumber = framenumber;
|
|
if (datachunk)
|
|
if (tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_DATA_CHUNK_ID) {
|
|
tsn_s->length = length - DATA_CHUNK_HEADER_LENGTH;
|
|
} else {
|
|
tsn_s->length = length - I_DATA_CHUNK_HEADER_LENGTH;
|
|
}
|
|
else
|
|
tsn_s->length = length;
|
|
if (tsn->secs < info->min_secs)
|
|
{
|
|
info->min_secs = tsn->secs;
|
|
info->min_usecs = tsn->usecs;
|
|
}
|
|
else if (tsn->secs == info->min_secs && tsn->usecs < info->min_usecs)
|
|
info->min_usecs = tsn->usecs;
|
|
|
|
if (tsn->secs > info->max_secs)
|
|
{
|
|
info->max_secs = tsn->secs;
|
|
info->max_usecs = tsn->usecs;
|
|
}
|
|
else if (tsn->secs == info->max_secs && tsn->usecs > info->max_usecs)
|
|
info->max_usecs = tsn->usecs;
|
|
g_ptr_array_add(info->sort_tsn1, tsn_s);
|
|
info->n_array_tsn1++;
|
|
}
|
|
if ((tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_SACK_CHUNK_ID) ||
|
|
(tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_NR_SACK_CHUNK_ID) )
|
|
{
|
|
tsnumber = tvb_get_ntohl((sctp_info->tvb)[chunk_number], SACK_CHUNK_CUMULATIVE_TSN_ACK_OFFSET);
|
|
if (tsnumber < info->min_tsn2)
|
|
info->min_tsn2 = tsnumber;
|
|
if (tsnumber > info->max_tsn2)
|
|
info->max_tsn2 = tsnumber;
|
|
length = tvb_get_ntohs(sctp_info->tvb[chunk_number], CHUNK_LENGTH_OFFSET);
|
|
if (sack->first_tsn == 0)
|
|
sack->first_tsn = tsnumber;
|
|
t_s_n = (guint8 *)g_malloc(length);
|
|
tvb_memcpy(sctp_info->tvb[chunk_number], (guint8 *)(t_s_n),0, length);
|
|
sack->tsns = g_list_append(sack->tsns, t_s_n);
|
|
sackchunk = TRUE;
|
|
tsn_s = g_new(struct tsn_sort, 1);
|
|
tsn_s->tsnumber = tsnumber;
|
|
tsn_s->secs = tsn->secs = (guint32)pinfo->rel_ts.secs;
|
|
tsn_s->usecs = tsn->usecs = (guint32)pinfo->rel_ts.nsecs/1000;
|
|
tsn_s->offset = 0;
|
|
tsn_s->framenumber = framenumber;
|
|
tsn_s->length = tvb_get_ntohl(sctp_info->tvb[chunk_number], SACK_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET);
|
|
if (tsn_s->length > info->max_window1)
|
|
info->max_window1 = tsn_s->length;
|
|
if (tsn->secs < info->min_secs)
|
|
{
|
|
info->min_secs = tsn->secs;
|
|
info->min_usecs = tsn->usecs;
|
|
}
|
|
else if (tsn->secs == info->min_secs && tsn->usecs < info->min_usecs)
|
|
info->min_usecs = tsn->usecs;
|
|
|
|
if (tsn->secs > info->max_secs)
|
|
{
|
|
info->max_secs = tsn->secs;
|
|
info->max_usecs = tsn->usecs;
|
|
}
|
|
else if (tsn->secs == info->max_secs && tsn->usecs > info->max_usecs)
|
|
info->max_usecs = tsn->usecs;
|
|
g_ptr_array_add(info->sort_sack2, tsn_s);
|
|
info->n_sack_chunks_ep2++;
|
|
}
|
|
}
|
|
}
|
|
if (info->verification_tag1 != 0 || info->verification_tag2 != 0)
|
|
{
|
|
guint32 number;
|
|
store = g_new(address, 1);
|
|
copy_address(store, &tmp_info.src);
|
|
info = add_address(store, info, info->direction);
|
|
store = g_new(address, 1);
|
|
copy_address(store, &tmp_info.dst);
|
|
if (info->direction == 1)
|
|
info = add_address(store, info, 2);
|
|
else
|
|
info = add_address(store, info, 1);
|
|
number = pinfo->num;
|
|
info->frame_numbers=g_list_prepend(info->frame_numbers, GUINT_TO_POINTER(number));
|
|
if (datachunk || forwardchunk) {
|
|
info->tsn1 = g_list_prepend(info->tsn1, tsn);
|
|
tsn_used = TRUE;
|
|
}
|
|
if (sackchunk == TRUE) {
|
|
info->sack2 = g_list_prepend(info->sack2, sack);
|
|
sack_used = TRUE;
|
|
}
|
|
sctp_tapinfo_struct.assoc_info_list = g_list_append(sctp_tapinfo_struct.assoc_info_list, info);
|
|
}
|
|
else
|
|
{
|
|
gchar* tmp_str;
|
|
error = g_new(sctp_error_info_t, 1);
|
|
error->frame_number = pinfo->num;
|
|
error->chunk_info[0] = '\0';
|
|
if ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_INIT_CHUNK_ID)
|
|
{
|
|
tmp_str = val_to_str_wmem(NULL, tvb_get_guint8(sctp_info->tvb[0],0),chunk_type_values,"Reserved (%d)");
|
|
(void) g_strlcpy(error->chunk_info, tmp_str, 200);
|
|
wmem_free(NULL, tmp_str);
|
|
}
|
|
else
|
|
{
|
|
for (chunk_number = 0; chunk_number < sctp_info->number_of_tvbs; chunk_number++)
|
|
{
|
|
tmp_str = val_to_str_wmem(NULL, tvb_get_guint8(sctp_info->tvb[chunk_number],0),chunk_type_values,"Reserved (%d)");
|
|
(void) g_strlcat(error->chunk_info, tmp_str, 200);
|
|
wmem_free(NULL, tmp_str);
|
|
}
|
|
}
|
|
error->info_text = "INFOS";
|
|
info->error_info_list = g_list_append(info->error_info_list, error);
|
|
}
|
|
}
|
|
} /* endif (!info) */
|
|
else
|
|
{
|
|
guint32 number;
|
|
info->direction = sctp_info->direction;
|
|
|
|
if (info->verification_tag1 == 0 && info->verification_tag2 != sctp_info->verification_tag) {
|
|
info->verification_tag1 = sctp_info->verification_tag;
|
|
} else if (info->verification_tag2 == 0 && info->verification_tag1 != sctp_info->verification_tag) {
|
|
info->verification_tag2 = sctp_info->verification_tag;
|
|
}
|
|
if (((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_INIT_CHUNK_ID) ||
|
|
((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_INIT_ACK_CHUNK_ID) ||
|
|
((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_DATA_CHUNK_ID) ||
|
|
((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_I_DATA_CHUNK_ID) ||
|
|
((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_SACK_CHUNK_ID) ||
|
|
((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_NR_SACK_CHUNK_ID) ||
|
|
((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_FORWARD_TSN_CHUNK_ID))
|
|
{
|
|
|
|
tsn = g_new0(tsn_t, 1);
|
|
copy_address(&tsn->src, &tmp_info.src);
|
|
copy_address(&tsn->dst, &tmp_info.dst);
|
|
|
|
sack = g_new0(tsn_t, 1);
|
|
copy_address(&sack->src, &tmp_info.src);
|
|
copy_address(&sack->dst, &tmp_info.dst);
|
|
sack->secs=tsn->secs = (guint32)pinfo->rel_ts.secs;
|
|
sack->usecs=tsn->usecs = (guint32)pinfo->rel_ts.nsecs/1000;
|
|
|
|
if (((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_DATA_CHUNK_ID) ||
|
|
((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_I_DATA_CHUNK_ID) ||
|
|
((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_SACK_CHUNK_ID) ||
|
|
((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_NR_SACK_CHUNK_ID) ||
|
|
((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_FORWARD_TSN_CHUNK_ID))
|
|
{
|
|
if (tsn->secs < info->min_secs)
|
|
{
|
|
info->min_secs = tsn->secs;
|
|
info->min_usecs = tsn->usecs;
|
|
}
|
|
else if (tsn->secs == info->min_secs && tsn->usecs < info->min_usecs)
|
|
info->min_usecs = tsn->usecs;
|
|
|
|
if (tsn->secs > info->max_secs)
|
|
{
|
|
info->max_secs = tsn->secs;
|
|
info->max_usecs = tsn->usecs;
|
|
}
|
|
else if (tsn->secs == info->max_secs && tsn->usecs > info->max_usecs)
|
|
info->max_usecs = tsn->usecs;
|
|
}
|
|
sack->frame_number = tsn->frame_number = pinfo->num;
|
|
}
|
|
number = pinfo->num;
|
|
info->frame_numbers=g_list_prepend(info->frame_numbers, GUINT_TO_POINTER(number));
|
|
|
|
store = g_new(address, 1);
|
|
copy_address(store, &tmp_info.src);
|
|
|
|
switch (info->direction) {
|
|
case 1:
|
|
info = add_address(store, info, 1);
|
|
break;
|
|
case 2:
|
|
info = add_address(store, info, 2);
|
|
break;
|
|
default:
|
|
g_free(store);
|
|
break;
|
|
}
|
|
|
|
store = g_new(address, 1);
|
|
copy_address(store, &tmp_info.dst);
|
|
|
|
switch (info->direction) {
|
|
case 1:
|
|
info = add_address(store, info, 2);
|
|
break;
|
|
case 2:
|
|
info = add_address(store, info, 1);
|
|
break;
|
|
default:
|
|
g_free(store);
|
|
break;
|
|
}
|
|
|
|
if (((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_INIT_ACK_CHUNK_ID) ||
|
|
((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_INIT_CHUNK_ID))
|
|
{
|
|
tsnumber = tvb_get_ntohl((sctp_info->tvb)[chunk_number], INIT_CHUNK_INITIAL_TSN_OFFSET);
|
|
if (info->direction == 2)
|
|
{
|
|
if (tsnumber < info->min_tsn2)
|
|
info->min_tsn2 = tsnumber;
|
|
if (tsnumber > info->max_tsn2)
|
|
info->max_tsn2 = tsnumber;
|
|
info->instream2 = tvb_get_ntohs(sctp_info->tvb[0],INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_OFFSET);
|
|
info->outstream2 = tvb_get_ntohs(sctp_info->tvb[0],INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_OFFSET);
|
|
info->arwnd2 = tvb_get_ntohl(sctp_info->tvb[0],INIT_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET);
|
|
info->tsn2 = g_list_prepend(info->tsn2, tsn);
|
|
tsn_used = TRUE;
|
|
}
|
|
else if (info->direction == 1)
|
|
{
|
|
if (tsnumber < info->min_tsn1)
|
|
info->min_tsn1 = tsnumber;
|
|
if (tsnumber > info->max_tsn1)
|
|
info->max_tsn1 = tsnumber;
|
|
info->instream1 = tvb_get_ntohs(sctp_info->tvb[0],INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_OFFSET);
|
|
info->outstream1 = tvb_get_ntohs(sctp_info->tvb[0],INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_OFFSET);
|
|
info->arwnd1 = tvb_get_ntohl(sctp_info->tvb[0],INIT_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET);
|
|
info->tsn1 = g_list_prepend(info->tsn1, tsn);
|
|
tsn_used = TRUE;
|
|
}
|
|
|
|
idx = tvb_get_guint8(sctp_info->tvb[0],0);
|
|
if (!IS_SCTP_CHUNK_TYPE(idx))
|
|
idx = OTHER_CHUNKS_INDEX;
|
|
info->chunk_count[idx]++;
|
|
if (info->direction == 1)
|
|
info->ep1_chunk_count[idx]++;
|
|
else
|
|
info->ep2_chunk_count[idx]++;
|
|
info = add_chunk_count(&tmp_info.src, info, info->direction, idx);
|
|
for (chunk_number = 1; chunk_number < sctp_info->number_of_tvbs; chunk_number++)
|
|
{
|
|
type = tvb_get_ntohs(sctp_info->tvb[chunk_number],0);
|
|
if (type == IPV4ADDRESS_PARAMETER_ID)
|
|
{
|
|
store = g_new(address, 1);
|
|
alloc_address_tvb(NULL, store, AT_IPv4, 4, sctp_info->tvb[chunk_number], IPV4_ADDRESS_OFFSET);
|
|
info = add_address(store, info, info->direction);
|
|
}
|
|
else if (type == IPV6ADDRESS_PARAMETER_ID)
|
|
{
|
|
store = g_new(address, 1);
|
|
alloc_address_tvb(NULL, store, AT_IPv6, 16, sctp_info->tvb[chunk_number], IPV6_ADDRESS_OFFSET);
|
|
info = add_address(store, info, info->direction);
|
|
}
|
|
}
|
|
if (info->direction == 1) {
|
|
if (info->dir1->init || info->dir1->initack) {
|
|
info->init_collision = TRUE;
|
|
}
|
|
if (tvb_get_guint8(sctp_info->tvb[0],0) == SCTP_INIT_CHUNK_ID) {
|
|
info->dir1->init = TRUE;
|
|
info->dir1->init_min_tsn = tvb_get_ntohl((sctp_info->tvb)[0], INIT_CHUNK_INITIAL_TSN_OFFSET);
|
|
info->min_tsn1 = info->dir1->init_min_tsn;
|
|
info->dir1->init_vtag = tvb_get_ntohl(sctp_info->tvb[0], INIT_CHUNK_INITIATE_TAG_OFFSET);
|
|
} else if (tvb_get_guint8(sctp_info->tvb[0],0) == SCTP_INIT_ACK_CHUNK_ID) {
|
|
info->dir1->initack = TRUE;
|
|
info->dir1->initack_min_tsn = tvb_get_ntohl((sctp_info->tvb)[0], INIT_CHUNK_INITIAL_TSN_OFFSET);
|
|
info->min_tsn1 = info->dir1->initack_min_tsn;
|
|
info->dir1->initack_vtag = tvb_get_ntohl(sctp_info->tvb[0], INIT_CHUNK_INITIATE_TAG_OFFSET);
|
|
}
|
|
} else {
|
|
if (info->dir2->init || info->dir2->initack) {
|
|
info->init_collision = TRUE;
|
|
}
|
|
if (tvb_get_guint8(sctp_info->tvb[0],0) == SCTP_INIT_CHUNK_ID) {
|
|
info->dir2->init = TRUE;
|
|
info->dir2->init_min_tsn = tvb_get_ntohl((sctp_info->tvb)[0], INIT_CHUNK_INITIAL_TSN_OFFSET);
|
|
info->min_tsn2 = info->dir2->init_min_tsn;
|
|
info->dir2->init_vtag = tvb_get_ntohl(sctp_info->tvb[0], INIT_CHUNK_INITIATE_TAG_OFFSET);
|
|
} else if (tvb_get_guint8(sctp_info->tvb[0],0) == SCTP_INIT_ACK_CHUNK_ID) {
|
|
info->dir2->initack = TRUE;
|
|
info->dir2->initack_min_tsn = tvb_get_ntohl((sctp_info->tvb)[0], INIT_CHUNK_INITIAL_TSN_OFFSET);
|
|
info->min_tsn2 = info->dir2->initack_min_tsn;
|
|
info->dir2->initack_vtag = tvb_get_ntohl(sctp_info->tvb[0], INIT_CHUNK_INITIATE_TAG_OFFSET);
|
|
}
|
|
}
|
|
if ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_INIT_ACK_CHUNK_ID)
|
|
{
|
|
info->initack = TRUE;
|
|
info->initack_dir = info->direction;
|
|
}
|
|
else if ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_INIT_CHUNK_ID)
|
|
{
|
|
info->init = TRUE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_INIT_ACK_CHUNK_ID) &&
|
|
((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_DATA_CHUNK_ID) &&
|
|
((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_I_DATA_CHUNK_ID) &&
|
|
((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_SACK_CHUNK_ID) &&
|
|
((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_NR_SACK_CHUNK_ID) &&
|
|
((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_FORWARD_TSN_CHUNK_ID))
|
|
{
|
|
if (!sack)
|
|
sack = g_new0(tsn_t, 1);
|
|
sack->tsns = NULL;
|
|
sack->first_tsn = 0;
|
|
if (!tsn)
|
|
tsn = g_new0(tsn_t, 1);
|
|
tsn->tsns = NULL;
|
|
tsn->first_tsn = 0;
|
|
}
|
|
for (chunk_number = 0; chunk_number < sctp_info->number_of_tvbs; chunk_number++)
|
|
{
|
|
idx = tvb_get_guint8(sctp_info->tvb[chunk_number],0);
|
|
if (!IS_SCTP_CHUNK_TYPE(idx))
|
|
idx = OTHER_CHUNKS_INDEX;
|
|
|
|
info->chunk_count[idx]++;
|
|
if (info->direction == 1)
|
|
info->ep1_chunk_count[idx]++;
|
|
else
|
|
info->ep2_chunk_count[idx]++;
|
|
info = add_chunk_count(&tmp_info.src, info,info->direction, idx);
|
|
|
|
if ((tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_DATA_CHUNK_ID) ||
|
|
(tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_I_DATA_CHUNK_ID))
|
|
datachunk = TRUE;
|
|
if (tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_FORWARD_TSN_CHUNK_ID)
|
|
forwardchunk = TRUE;
|
|
if ((datachunk || forwardchunk) && tsn != NULL)
|
|
{
|
|
tsnumber = tvb_get_ntohl((sctp_info->tvb)[chunk_number], DATA_CHUNK_TSN_OFFSET);
|
|
if (tsn->first_tsn == 0)
|
|
tsn->first_tsn = tsnumber;
|
|
if (datachunk)
|
|
{
|
|
t_s_n = (guint8 *)g_malloc(16);
|
|
tvb_memcpy(sctp_info->tvb[chunk_number], (guint8 *)(t_s_n),0, 16);
|
|
if (tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_DATA_CHUNK_ID) {
|
|
length=tvb_get_ntohs(sctp_info->tvb[chunk_number], CHUNK_LENGTH_OFFSET)-DATA_CHUNK_HEADER_LENGTH;
|
|
} else {
|
|
length = tvb_get_ntohs(sctp_info->tvb[chunk_number], CHUNK_LENGTH_OFFSET) - I_DATA_CHUNK_HEADER_LENGTH;
|
|
}
|
|
info->n_data_chunks++;
|
|
info->n_data_bytes+=length;
|
|
}
|
|
else
|
|
{
|
|
length=tvb_get_ntohs(sctp_info->tvb[chunk_number], CHUNK_LENGTH_OFFSET);
|
|
t_s_n = (guint8 *)g_malloc(length);
|
|
tvb_memcpy(sctp_info->tvb[chunk_number], (guint8 *)(t_s_n),0, length);
|
|
info->n_forward_chunks++;
|
|
}
|
|
tsn->tsns = g_list_append(tsn->tsns, t_s_n);
|
|
|
|
tsn_s = g_new0(struct tsn_sort, 1);
|
|
tsn_s->tsnumber = tsnumber;
|
|
tsn_s->secs = tsn->secs = (guint32)pinfo->rel_ts.secs;
|
|
tsn_s->usecs = tsn->usecs = (guint32)pinfo->rel_ts.nsecs/1000;
|
|
tsn_s->offset = 0;
|
|
tsn_s->framenumber = framenumber;
|
|
tsn_s->length = length;
|
|
|
|
if (tsn->secs < info->min_secs)
|
|
{
|
|
info->min_secs = tsn->secs;
|
|
info->min_usecs = tsn->usecs;
|
|
}
|
|
else if (tsn->secs == info->min_secs && tsn->usecs < info->min_usecs)
|
|
info->min_usecs = tsn->usecs;
|
|
|
|
if (tsn->secs > info->max_secs)
|
|
{
|
|
info->max_secs = tsn->secs;
|
|
info->max_usecs = tsn->usecs;
|
|
}
|
|
else if (tsn->secs == info->max_secs && tsn->usecs > info->max_usecs)
|
|
info->max_usecs = tsn->usecs;
|
|
|
|
if (info->direction == 1)
|
|
{
|
|
if (info->firstdata) {
|
|
info->firstdata = FALSE;
|
|
if (info->init_collision) {
|
|
if (tsnumber != info->min_tsn1) {
|
|
info->min_tsn1 = info->dir1->init_min_tsn;
|
|
}
|
|
info->min_tsn2 = info->dir2->initack_min_tsn;
|
|
}
|
|
} else {
|
|
if(tsnumber < info->min_tsn1) {
|
|
info->min_tsn1 = tsnumber;
|
|
}
|
|
}
|
|
if ((info->init || (info->initack && info->initack_dir == 1))&& tsnumber >= info->min_tsn1 && tsnumber <= info->max_tsn1)
|
|
{
|
|
if (datachunk)
|
|
{
|
|
info->n_data_chunks_ep1++;
|
|
info->n_data_bytes_ep1 += length;
|
|
}
|
|
else if (forwardchunk)
|
|
{
|
|
info->n_forward_chunks_ep1++;
|
|
}
|
|
}
|
|
if(tsnumber > info->max_tsn1)
|
|
{
|
|
info->max_tsn1 = tsnumber;
|
|
if (datachunk)
|
|
{
|
|
info->n_data_chunks_ep1++;
|
|
info->n_data_bytes_ep1 += length;
|
|
}
|
|
else if (forwardchunk)
|
|
{
|
|
info->n_forward_chunks_ep1++;
|
|
}
|
|
}
|
|
if (datachunk)
|
|
{
|
|
if (info->init == FALSE) {
|
|
guint16 tmp = tvb_get_ntohs((sctp_info->tvb)[chunk_number], DATA_CHUNK_STREAM_ID_OFFSET)+1;
|
|
if (info->outstream1 < tmp) info->outstream1 = tmp;
|
|
}
|
|
if (info->initack == FALSE) {
|
|
guint16 tmp = tvb_get_ntohs((sctp_info->tvb)[chunk_number], DATA_CHUNK_STREAM_ID_OFFSET)+1;
|
|
if (info->instream2 < tmp) info->instream2 = tmp;
|
|
}
|
|
}
|
|
|
|
g_ptr_array_add(info->sort_tsn1, tsn_s);
|
|
info->n_array_tsn1++;
|
|
}
|
|
else if (info->direction == 2)
|
|
{
|
|
if (info->firstdata) {
|
|
info->firstdata = FALSE;
|
|
if (info->init_collision) {
|
|
if (tsnumber != info->min_tsn2) {
|
|
info->min_tsn2 = info->dir2->init_min_tsn;
|
|
info->initack_dir = 2;
|
|
}
|
|
info->min_tsn1 = info->dir1->initack_min_tsn;
|
|
}
|
|
} else {
|
|
if(tsnumber < info->min_tsn2)
|
|
info->min_tsn2 = tsnumber;
|
|
}
|
|
|
|
if ((info->initack && info->initack_dir == 2)&& tsnumber >= info->min_tsn2 && tsnumber <= info->max_tsn2)
|
|
{
|
|
if (datachunk)
|
|
{
|
|
if (tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_DATA_CHUNK_ID) {
|
|
length = tvb_get_ntohs(sctp_info->tvb[chunk_number], CHUNK_LENGTH_OFFSET) - DATA_CHUNK_HEADER_LENGTH;
|
|
} else {
|
|
length = tvb_get_ntohs(sctp_info->tvb[chunk_number], CHUNK_LENGTH_OFFSET) - I_DATA_CHUNK_HEADER_LENGTH;
|
|
}
|
|
info->n_data_chunks_ep2++;
|
|
info->n_data_bytes_ep2+=length;
|
|
}
|
|
else if (forwardchunk)
|
|
{
|
|
info->n_forward_chunks_ep2++;
|
|
}
|
|
}
|
|
if (tsnumber > info->max_tsn2)
|
|
{
|
|
info->max_tsn2 = tsnumber;
|
|
if (datachunk)
|
|
{
|
|
if (tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_DATA_CHUNK_ID) {
|
|
length = tvb_get_ntohs(sctp_info->tvb[chunk_number], CHUNK_LENGTH_OFFSET) - DATA_CHUNK_HEADER_LENGTH;
|
|
} else {
|
|
length = tvb_get_ntohs(sctp_info->tvb[chunk_number], CHUNK_LENGTH_OFFSET) - I_DATA_CHUNK_HEADER_LENGTH;
|
|
}
|
|
info->n_data_chunks_ep2++;
|
|
info->n_data_bytes_ep2+=length;
|
|
}
|
|
else if (forwardchunk)
|
|
{
|
|
info->n_forward_chunks_ep2++;
|
|
}
|
|
}
|
|
if (datachunk)
|
|
{
|
|
if (info->init == FALSE) {
|
|
guint16 tmp = tvb_get_ntohs((sctp_info->tvb)[chunk_number], DATA_CHUNK_STREAM_ID_OFFSET)+1;
|
|
if (info->instream1 < tmp) info->instream1 = tmp;
|
|
}
|
|
if (info->initack == FALSE) {
|
|
guint16 tmp = tvb_get_ntohs((sctp_info->tvb)[chunk_number], DATA_CHUNK_STREAM_ID_OFFSET)+1;
|
|
if (info->outstream2 < tmp) info->outstream2 = tmp;
|
|
}
|
|
}
|
|
|
|
g_ptr_array_add(info->sort_tsn2, tsn_s);
|
|
info->n_array_tsn2++;
|
|
}
|
|
}
|
|
else if (((tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_SACK_CHUNK_ID) ||
|
|
(tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_NR_SACK_CHUNK_ID)) &&
|
|
sack != NULL)
|
|
{
|
|
tsnumber = tvb_get_ntohl((sctp_info->tvb)[chunk_number], SACK_CHUNK_CUMULATIVE_TSN_ACK_OFFSET);
|
|
length = tvb_get_ntohs(sctp_info->tvb[chunk_number], CHUNK_LENGTH_OFFSET);
|
|
|
|
if (sack->first_tsn == 0)
|
|
sack->first_tsn = tsnumber;
|
|
|
|
t_s_n = (guint8 *)g_malloc(length);
|
|
tvb_memcpy(sctp_info->tvb[chunk_number], (guint8 *)(t_s_n),0, length);
|
|
sack->tsns = g_list_append(sack->tsns, t_s_n);
|
|
sackchunk = TRUE;
|
|
tsn_s = g_new0(struct tsn_sort, 1);
|
|
tsn_s->tsnumber = tsnumber;
|
|
tsn_s->secs = tsn->secs = (guint32)pinfo->rel_ts.secs;
|
|
tsn_s->usecs = tsn->usecs = (guint32)pinfo->rel_ts.nsecs/1000;
|
|
tsn_s->offset = 0;
|
|
tsn_s->framenumber = framenumber;
|
|
tsn_s->length = tvb_get_ntohl(sctp_info->tvb[chunk_number], SACK_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET);
|
|
|
|
if (tsn->secs < info->min_secs)
|
|
{
|
|
info->min_secs = tsn->secs;
|
|
info->min_usecs = tsn->usecs;
|
|
}
|
|
else if (tsn->secs == info->min_secs && tsn->usecs < info->min_usecs)
|
|
info->min_usecs = tsn->usecs;
|
|
|
|
if (tsn->secs > info->max_secs)
|
|
{
|
|
info->max_secs = tsn->secs;
|
|
info->max_usecs = tsn->usecs;
|
|
}
|
|
else if (tsn->secs == info->max_secs && tsn->usecs > info->max_usecs)
|
|
info->max_usecs = tsn->usecs;
|
|
|
|
|
|
if (info->direction == 2)
|
|
{
|
|
if(tsnumber < info->min_tsn1)
|
|
info->min_tsn1 = tsnumber;
|
|
if(tsnumber > info->max_tsn1)
|
|
info->max_tsn1 = tsnumber;
|
|
if (tsn_s->length > info->max_window1)
|
|
info->max_window1 = tsn_s->length;
|
|
g_ptr_array_add(info->sort_sack1, tsn_s);
|
|
info->n_sack_chunks_ep1++;
|
|
}
|
|
else if (info->direction == 1)
|
|
{
|
|
if(tsnumber < info->min_tsn2)
|
|
info->min_tsn2 = tsnumber;
|
|
if(tsnumber > info->max_tsn2)
|
|
info->max_tsn2 = tsnumber;
|
|
if (tsn_s->length > info->max_window2)
|
|
info->max_window2 = tsn_s->length;
|
|
g_ptr_array_add(info->sort_sack2, tsn_s);
|
|
info->n_sack_chunks_ep2++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (datachunk || forwardchunk)
|
|
{
|
|
if (info->direction == 1)
|
|
info->tsn1 = g_list_prepend(info->tsn1, tsn);
|
|
else if (info->direction == 2)
|
|
info->tsn2 = g_list_prepend(info->tsn2, tsn);
|
|
tsn_used = TRUE;
|
|
}
|
|
if (sackchunk == TRUE)
|
|
{
|
|
if (info->direction == 1)
|
|
info->sack2 = g_list_prepend(info->sack2, sack);
|
|
else if(info->direction == 2)
|
|
info->sack1 = g_list_prepend(info->sack1, sack);
|
|
sack_used = TRUE;
|
|
}
|
|
info->n_tvbs += sctp_info->number_of_tvbs;
|
|
sctp_tapinfo_struct.sum_tvbs += sctp_info->number_of_tvbs;
|
|
info = calc_checksum(sctp_info, info);
|
|
info->n_packets++;
|
|
}
|
|
if (tsn && !tsn_used)
|
|
tsn_free(tsn);
|
|
if (sack && !sack_used)
|
|
tsn_free(sack);
|
|
free_address(&tmp_info.src);
|
|
free_address(&tmp_info.dst);
|
|
return TAP_PACKET_REDRAW;
|
|
}
|
|
|
|
|
|
/****************************************************************************/
|
|
void
|
|
remove_tap_listener_sctp_stat(void)
|
|
{
|
|
if (sctp_tapinfo_struct.is_registered) {
|
|
remove_tap_listener(&sctp_tapinfo_struct);
|
|
sctp_tapinfo_struct.is_registered = FALSE;
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
sctp_stat_scan(void)
|
|
{
|
|
if (!sctp_tapinfo_struct.is_registered) {
|
|
register_tap_listener_sctp_stat();
|
|
}
|
|
}
|
|
|
|
const sctp_allassocs_info_t *
|
|
sctp_stat_get_info(void)
|
|
{
|
|
return &sctp_tapinfo_struct;
|
|
}
|
|
|
|
const sctp_assoc_info_t *
|
|
get_sctp_assoc_info(guint16 assoc_id)
|
|
{
|
|
sctp_tmp_info_t needle = { .assoc_id = assoc_id };
|
|
return find_assoc(&needle);
|
|
}
|
|
|
|
void
|
|
register_tap_listener_sctp_stat(void)
|
|
{
|
|
GString *error_string;
|
|
|
|
if (!sctp_tapinfo_struct.is_registered)
|
|
{
|
|
if ((error_string = register_tap_listener("sctp", &sctp_tapinfo_struct, NULL, 0, reset, packet, NULL, NULL))) {
|
|
simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, "%s", error_string->str);
|
|
g_string_free(error_string, TRUE);
|
|
return;
|
|
}
|
|
sctp_tapinfo_struct.is_registered=TRUE;
|
|
}
|
|
}
|