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/* tap-protohierstat.c
* protohierstat 2002 Ronnie Sahlberg
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
/* This module provides ProtocolHierarchyStatistics for tshark */
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "epan/epan_dissect.h"
#include <epan/tap.h>
#include <epan/stat_tap_ui.h>
#include <wsutil/cmdarg_err.h>
#include "tap-protohierstat.h"
int pc_proto_id = -1;
void register_tap_listener_protohierstat(void);
phs_t *
new_phs_t(phs_t *parent, const char *filter)
{
phs_t *rs;
rs = g_new(phs_t, 1);
rs->sibling = NULL;
rs->child = NULL;
rs->parent = parent;
rs->filter = NULL;
if (filter != NULL) {
rs->filter = g_strdup(filter);
}
rs->protocol = -1;
rs->proto_name = NULL;
rs->frames = 0;
rs->bytes = 0;
return rs;
}
void
free_phs(phs_t *rs)
{
if (!rs) {
return;
}
if (rs->filter) {
g_free(rs->filter);
rs->filter = NULL;
}
if (rs->sibling)
{
free_phs(rs->sibling);
rs->sibling = NULL;
}
if (rs->child)
{
free_phs(rs->child);
rs->child = NULL;
}
g_free(rs);
}
tap_packet_status
protohierstat_packet(void *prs, packet_info *pinfo, epan_dissect_t *edt, const void *dummy _U_, tap_flags_t flags _U_)
{
phs_t *rs = (phs_t *)prs;
phs_t *tmprs;
proto_node *node;
field_info *fi;
if (!edt) {
return TAP_PACKET_DONT_REDRAW;
}
if (!edt->tree) {
return TAP_PACKET_DONT_REDRAW;
}
if (!edt->tree->first_child) {
return TAP_PACKET_DONT_REDRAW;
}
for (node=edt->tree->first_child; node; node=node->next) {
fi = PNODE_FINFO(node);
/*
* If the first child is a tree of comments, skip over it.
* This keeps us from having a top-level "pkt_comment"
* entry that represents a nonexistent protocol,
* and matches how the GUI treats comments.
*/
if (G_UNLIKELY(fi->hfinfo->id == pc_proto_id)) {
continue;
}
/* first time we saw a protocol at this leaf */
if (rs->protocol == -1) {
rs->protocol = fi->hfinfo->id;
rs->proto_name = fi->hfinfo->abbrev;
rs->frames = 1;
rs->bytes = pinfo->fd->pkt_len;
rs->child = new_phs_t(rs, NULL);
rs = rs->child;
continue;
}
/* find this protocol in the list of siblings */
for (tmprs=rs; tmprs; tmprs=tmprs->sibling) {
if (tmprs->protocol == fi->hfinfo->id) {
break;
}
}
/* not found, then we must add it to the end of the list */
if (!tmprs) {
for (tmprs=rs; tmprs->sibling; tmprs=tmprs->sibling)
;
tmprs->sibling = new_phs_t(rs->parent, NULL);
rs = tmprs->sibling;
rs->protocol = fi->hfinfo->id;
rs->proto_name = fi->hfinfo->abbrev;
} else {
rs = tmprs;
}
rs->frames++;
rs->bytes += pinfo->fd->pkt_len;
if (!rs->child) {
rs->child = new_phs_t(rs, NULL);
}
rs = rs->child;
}
return TAP_PACKET_REDRAW;
}
static void
phs_draw(phs_t *rs, int indentation)
{
int i, stroff;
#define MAXPHSLINE 80
char str[MAXPHSLINE];
for (;rs;rs = rs->sibling) {
if (rs->protocol == -1) {
return;
}
str[0] = 0;
stroff = 0;
for (i=0; i<indentation; i++) {
if (i > 15) {
stroff += snprintf(str+stroff, MAXPHSLINE-stroff, "...");
break;
}
stroff += snprintf(str+stroff, MAXPHSLINE-stroff, " ");
}
snprintf(str+stroff, MAXPHSLINE-stroff, "%s", rs->proto_name);
printf("%-40s frames:%u bytes:%" PRIu64 "\n", str, rs->frames, rs->bytes);
phs_draw(rs->child, indentation+1);
}
}
static void
protohierstat_draw(void *prs)
{
phs_t *rs = (phs_t *)prs;
printf("\n");
printf("===================================================================\n");
printf("Protocol Hierarchy Statistics\n");
printf("Filter: %s\n\n", rs->filter ? rs->filter : "");
phs_draw(rs, 0);
printf("===================================================================\n");
}
static void
protohierstat_init(const char *opt_arg, void *userdata _U_)
{
phs_t *rs;
int pos = 0;
const char *filter = NULL;
GString *error_string;
if (strcmp("io,phs", opt_arg) == 0) {
/* No arguments */
} else if (sscanf(opt_arg, "io,phs,%n", &pos) == 0) {
if (pos) {
filter = opt_arg+pos;
}
} else {
cmdarg_err("invalid \"-z io,phs[,<filter>]\" argument");
exit(1);
}
pc_proto_id = proto_registrar_get_id_byname("pkt_comment");
rs = new_phs_t(NULL, filter);
error_string = register_tap_listener("frame", rs, filter, TL_REQUIRES_PROTO_TREE, NULL, protohierstat_packet, protohierstat_draw, NULL);
if (error_string) {
/* error, we failed to attach to the tap. clean up */
free_phs(rs);
cmdarg_err("Couldn't register io,phs tap: %s",
error_string->str);
g_string_free(error_string, true);
exit(1);
}
}
static stat_tap_ui protohierstat_ui = {
REGISTER_STAT_GROUP_GENERIC,
NULL,
"io,phs",
protohierstat_init,
0,
NULL
};
void
register_tap_listener_protohierstat(void)
{
register_stat_tap_ui(&protohierstat_ui, NULL);
}
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 8
* tab-width: 8
* indent-tabs-mode: t
* End:
*
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
* :indentSize=8:tabSize=8:noTabs=false:
*/
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