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wireshark/ui/summary.c

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/* summary.c
* Routines for capture file summary info
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <config.h>
#include <wiretap/pcap-encap.h>
#include <wiretap/wtap_opttypes.h>
#include <epan/packet.h>
#include <wsutil/file_util.h>
#include <wsutil/wsgcrypt.h>
#include "cfile.h"
#include "ui/summary.h"
// Strongest to weakest
#define HASH_SIZE_SHA256 32
#define HASH_SIZE_RMD160 20
#define HASH_SIZE_SHA1 20
#define HASH_BUF_SIZE (1024 * 1024)
static void
tally_frame_data(frame_data *cur_frame, summary_tally *sum_tally)
{
double cur_time;
sum_tally->bytes += cur_frame->pkt_len;
if (cur_frame->passed_dfilter){
sum_tally->filtered_count++;
sum_tally->filtered_bytes += cur_frame->pkt_len;
}
if (cur_frame->marked){
sum_tally->marked_count++;
sum_tally->marked_bytes += cur_frame->pkt_len;
}
if (cur_frame->ignored){
sum_tally->ignored_count++;
}
if (cur_frame->has_ts) {
/* This packet has a time stamp. */
cur_time = nstime_to_sec(&cur_frame->abs_ts);
sum_tally->packet_count_ts++;
if (cur_time < sum_tally->start_time) {
sum_tally->start_time = cur_time;
}
if (cur_time > sum_tally->stop_time){
sum_tally->stop_time = cur_time;
}
if (cur_frame->passed_dfilter){
sum_tally->filtered_count_ts++;
/*
* If we've seen one filtered packet, this is the first
* one.
*/
if (sum_tally->filtered_count == 1){
sum_tally->filtered_start= cur_time;
sum_tally->filtered_stop = cur_time;
} else {
if (cur_time < sum_tally->filtered_start) {
sum_tally->filtered_start = cur_time;
}
if (cur_time > sum_tally->filtered_stop) {
sum_tally->filtered_stop = cur_time;
}
}
}
if (cur_frame->marked){
sum_tally->marked_count_ts++;
/*
* If we've seen one marked packet, this is the first
* one.
*/
if (sum_tally->marked_count == 1){
sum_tally->marked_start= cur_time;
sum_tally->marked_stop = cur_time;
} else {
if (cur_time < sum_tally->marked_start) {
sum_tally->marked_start = cur_time;
}
if (cur_time > sum_tally->marked_stop) {
sum_tally->marked_stop = cur_time;
}
}
}
}
}
static void
hash_to_str(const unsigned char *hash, size_t length, char *str) {
int i;
for (i = 0; i < (int) length; i++) {
g_snprintf(str+(i*2), 3, "%02x", hash[i]);
}
}
void
summary_fill_in(capture_file *cf, summary_tally *st)
{
frame_data *first_frame, *cur_frame;
guint32 framenum;
iface_summary_info iface;
guint i;
wtapng_iface_descriptions_t* idb_info;
wtap_block_t wtapng_if_descr;
wtapng_if_descr_mandatory_t *wtapng_if_descr_mand;
wtap_block_t if_stats;
guint64 isb_ifdrop;
char* if_string;
if_filter_opt_t if_filter;
FILE *fh;
char *hash_buf;
gcry_md_hd_t hd;
size_t hash_bytes;
st->packet_count_ts = 0;
st->start_time = 0;
st->stop_time = 0;
st->bytes = 0;
st->filtered_count = 0;
st->filtered_count_ts = 0;
st->filtered_start = 0;
st->filtered_stop = 0;
st->filtered_bytes = 0;
st->marked_count = 0;
st->marked_count_ts = 0;
st->marked_start = 0;
st->marked_stop = 0;
st->marked_bytes = 0;
st->ignored_count = 0;
/* initialize the tally */
if (cf->count != 0) {
first_frame = frame_data_sequence_find(cf->provider.frames, 1);
st->start_time = nstime_to_sec(&first_frame->abs_ts);
st->stop_time = nstime_to_sec(&first_frame->abs_ts);
for (framenum = 1; framenum <= cf->count; framenum++) {
cur_frame = frame_data_sequence_find(cf->provider.frames, framenum);
tally_frame_data(cur_frame, st);
}
}
st->filename = cf->filename;
st->file_length = cf->f_datalen;
st->file_type = cf->cd_t;
st->compression_type = cf->compression_type;
st->is_tempfile = cf->is_tempfile;
st->file_encap_type = cf->lnk_t;
st->packet_encap_types = cf->linktypes;
st->snap = cf->snap;
st->elapsed_time = nstime_to_sec(&cf->elapsed_time);
st->packet_count = cf->count;
st->drops_known = cf->drops_known;
st->drops = cf->drops;
st->dfilter = cf->dfilter;
st->ifaces = g_array_new(FALSE, FALSE, sizeof(iface_summary_info));
idb_info = wtap_file_get_idb_info(cf->provider.wth);
for (i = 0; i < idb_info->interface_data->len; i++) {
wtapng_if_descr = g_array_index(idb_info->interface_data, wtap_block_t, i);
wtapng_if_descr_mand = (wtapng_if_descr_mandatory_t*)wtap_block_get_mandatory_data(wtapng_if_descr);
if (wtap_block_get_if_filter_option_value(wtapng_if_descr, OPT_IDB_FILTER, &if_filter) == WTAP_OPTTYPE_SUCCESS) {
if (if_filter.type == if_filter_pcap) {
iface.cfilter = g_strdup(if_filter.data.filter_str);
} else {
/* Not a pcap filter string; punt for now */
iface.cfilter = NULL;
}
} else {
iface.cfilter = NULL;
}
if (wtap_block_get_string_option_value(wtapng_if_descr, OPT_IDB_NAME, &if_string) == WTAP_OPTTYPE_SUCCESS) {
iface.name = g_strdup(if_string);
} else {
iface.name = NULL;
}
if (wtap_block_get_string_option_value(wtapng_if_descr, OPT_IDB_DESCR, &if_string) == WTAP_OPTTYPE_SUCCESS) {
iface.descr = g_strdup(if_string);
} else {
iface.descr = NULL;
}
iface.drops_known = FALSE;
iface.drops = 0;
iface.snap = wtapng_if_descr_mand->snap_len;
iface.encap_type = wtapng_if_descr_mand->wtap_encap;
iface.isb_comment = NULL;
if(wtapng_if_descr_mand->num_stat_entries == 1){
/* dumpcap only writes one ISB, only handle that for now */
if_stats = g_array_index(wtapng_if_descr_mand->interface_statistics, wtap_block_t, 0);
if (wtap_block_get_uint64_option_value(if_stats, OPT_ISB_IFDROP, &isb_ifdrop) == WTAP_OPTTYPE_SUCCESS) {
iface.drops_known = TRUE;
iface.drops = isb_ifdrop;
}
/* XXX: this doesn't get used, and might need to be g_strdup'ed when it does */
/* XXX - support multiple comments */
if (wtap_block_get_nth_string_option_value(if_stats, OPT_COMMENT, 0, &iface.isb_comment) != WTAP_OPTTYPE_SUCCESS) {
iface.isb_comment = NULL;
}
}
g_array_append_val(st->ifaces, iface);
}
g_free(idb_info);
g_strlcpy(st->file_sha256, "<unknown>", HASH_STR_SIZE);
g_strlcpy(st->file_rmd160, "<unknown>", HASH_STR_SIZE);
g_strlcpy(st->file_sha1, "<unknown>", HASH_STR_SIZE);
gcry_md_open(&hd, GCRY_MD_SHA256, 0);
if (hd) {
gcry_md_enable(hd, GCRY_MD_RMD160);
gcry_md_enable(hd, GCRY_MD_SHA1);
}
hash_buf = (char *)g_malloc(HASH_BUF_SIZE);
fh = ws_fopen(cf->filename, "rb");
if (fh && hash_buf && hd) {
while((hash_bytes = fread(hash_buf, 1, HASH_BUF_SIZE, fh)) > 0) {
gcry_md_write(hd, hash_buf, hash_bytes);
}
gcry_md_final(hd);
hash_to_str(gcry_md_read(hd, GCRY_MD_SHA256), HASH_SIZE_SHA256, st->file_sha256);
hash_to_str(gcry_md_read(hd, GCRY_MD_RMD160), HASH_SIZE_RMD160, st->file_rmd160);
hash_to_str(gcry_md_read(hd, GCRY_MD_SHA1), HASH_SIZE_SHA1, st->file_sha1);
}
if (fh) fclose(fh);
g_free(hash_buf);
gcry_md_close(hd);
}
#ifdef HAVE_LIBPCAP
void
summary_fill_in_capture(capture_file *cf,capture_options *capture_opts, summary_tally *st)
{
iface_summary_info iface;
interface_t *device;
guint i;
if (st->ifaces->len == 0) {
/*
* XXX - do this only if we have a live capture.
*/
for (i = 0; i < capture_opts->all_ifaces->len; i++) {
device = &g_array_index(capture_opts->all_ifaces, interface_t, i);
if (!device->selected) {
continue;
}
iface.cfilter = g_strdup(device->cfilter);
iface.name = g_strdup(device->name);
iface.descr = g_strdup(device->display_name);
iface.drops_known = cf->drops_known;
iface.drops = cf->drops;
iface.snap = device->snaplen;
iface.encap_type = wtap_pcap_encap_to_wtap_encap(device->active_dlt);
g_array_append_val(st->ifaces, iface);
}
}
}
#endif
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local Variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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