nexmon – Rev 1
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/* tap-rtspstat.c
* tap-rtspstat March 2011
*
* Stephane GORSE (Orange Labs / France Telecom)
* Copied from Jean-Michel FAYARD's works (HTTP)
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <glib.h>
#include <epan/packet_info.h>
#include <epan/value_string.h>
#include <epan/tap.h>
#include <epan/stat_tap_ui.h>
#include <epan/dissectors/packet-rtsp.h>
void register_tap_listener_rtspstat(void);
/* used to keep track of the statictics for an entire program interface */
typedef struct _rtsp_stats_t {
char *filter;
GHashTable *hash_responses;
GHashTable *hash_requests;
} rtspstat_t;
/* used to keep track of the stats for a specific response code
* for example it can be { 3, 404, "Not Found" ,...}
* which means we captured 3 reply rtsp/1.1 404 Not Found */
typedef struct _rtsp_response_code_t {
guint32 packets; /* 3 */
guint response_code; /* 404 */
const gchar *name; /* Not Found */
rtspstat_t *sp;
} rtsp_response_code_t;
/* used to keep track of the stats for a specific request string */
typedef struct _rtsp_request_methode_t {
gchar *response; /* eg. : SETUP */
guint32 packets;
rtspstat_t *sp;
} rtsp_request_methode_t;
/* insert some entries */
static void
rtsp_init_hash( rtspstat_t *sp)
{
int i;
sp->hash_responses = g_hash_table_new( g_int_hash, g_int_equal);
for (i=0 ; rtsp_status_code_vals[i].strptr ; i++ )
{
gint *key = g_new (gint, 1);
rtsp_response_code_t *sc = g_new (rtsp_response_code_t, 1);
*key = rtsp_status_code_vals[i].value;
sc->packets = 0;
sc->response_code = *key;
sc->name = rtsp_status_code_vals[i].strptr;
sc->sp = sp;
g_hash_table_insert( sc->sp->hash_responses, key, sc);
}
sp->hash_requests = g_hash_table_new( g_str_hash, g_str_equal);
}
static void
rtsp_draw_hash_requests( gchar *key _U_ , rtsp_request_methode_t *data, gchar * format)
{
if (data->packets == 0)
return;
printf( format, data->response, data->packets);
}
static void
rtsp_draw_hash_responses( gint * key _U_ , rtsp_response_code_t *data, char * format)
{
if (data == NULL) {
g_warning("No data available, key=%d\n", *key);
exit(EXIT_FAILURE);
}
if (data->packets == 0)
return;
/* " RTSP %3d %-35s %9d packets", */
printf(format, data->response_code, data->name, data->packets );
}
/* NOT USED at this moment */
/*
static void
rtsp_free_hash( gpointer key, gpointer value, gpointer user_data _U_ )
{
g_free(key);
g_free(value);
}
*/
static void
rtsp_reset_hash_responses(gchar *key _U_ , rtsp_response_code_t *data, gpointer ptr _U_ )
{
data->packets = 0;
}
static void
rtsp_reset_hash_requests(gchar *key _U_ , rtsp_request_methode_t *data, gpointer ptr _U_ )
{
data->packets = 0;
}
static void
rtspstat_reset(void *psp )
{
rtspstat_t *sp = (rtspstat_t *)psp;
g_hash_table_foreach( sp->hash_responses, (GHFunc)rtsp_reset_hash_responses, NULL);
g_hash_table_foreach( sp->hash_requests, (GHFunc)rtsp_reset_hash_requests, NULL);
}
static int
rtspstat_packet(void *psp , packet_info *pinfo _U_, epan_dissect_t *edt _U_, const void *pri)
{
const rtsp_info_value_t *value = (const rtsp_info_value_t *)pri;
rtspstat_t *sp = (rtspstat_t *) psp;
/* We are only interested in reply packets with a status code */
/* Request or reply packets ? */
if (value->response_code != 0) {
guint *key = g_new(guint, 1);
rtsp_response_code_t *sc;
*key = value->response_code;
sc = (rtsp_response_code_t *)g_hash_table_lookup(
sp->hash_responses,
key);
if (sc == NULL) {
/* non standard status code ; we classify it as others
* in the relevant category (Informational,Success,Redirection,Client Error,Server Error)
*/
int i = value->response_code;
if ((i < 100) || (i >= 600)) {
return 0;
}
else if (i < 200) {
*key = 199; /* Hopefully, this status code will never be used */
}
else if (i < 300) {
*key = 299;
}
else if (i < 400) {
*key = 399;
}
else if (i < 500) {
*key = 499;
}
else {
*key = 599;
}
sc = (rtsp_response_code_t *)g_hash_table_lookup(
sp->hash_responses,
key);
if (sc == NULL)
return 0;
}
sc->packets++;
}
else if (value->request_method) {
rtsp_request_methode_t *sc;
sc = (rtsp_request_methode_t *)g_hash_table_lookup(
sp->hash_requests,
value->request_method);
if (sc == NULL) {
sc = g_new(rtsp_request_methode_t, 1);
sc->response = g_strdup( value->request_method );
sc->packets = 1;
sc->sp = sp;
g_hash_table_insert( sp->hash_requests, sc->response, sc);
} else {
sc->packets++;
}
} else {
return 0;
}
return 1;
}
static void
rtspstat_draw(void *psp )
{
rtspstat_t *sp = (rtspstat_t *)psp;
printf("\n");
printf("===================================================================\n");
if (! sp->filter[0])
printf("RTSP Statistics\n");
else
printf("RTSP Statistics with filter %s\n", sp->filter);
printf( "* RTSP Status Codes in reply packets\n");
g_hash_table_foreach( sp->hash_responses, (GHFunc)rtsp_draw_hash_responses,
(gpointer)" RTSP %3d %s\n");
printf("* List of RTSP Request methods\n");
g_hash_table_foreach( sp->hash_requests, (GHFunc)rtsp_draw_hash_requests,
(gpointer)" %9s %d \n");
printf("===================================================================\n");
}
/* When called, this function will create a new instance of rtspstat.
*/
static void
rtspstat_init(const char *opt_arg, void *userdata _U_)
{
rtspstat_t *sp;
const char *filter = NULL;
GString *error_string;
if (!strncmp (opt_arg, "rtsp,stat,", 10)) {
filter = opt_arg+10;
} else {
filter = NULL;
}
sp = (rtspstat_t *)g_malloc( sizeof(rtspstat_t) );
if (filter) {
sp->filter = g_strdup(filter);
} else {
sp->filter = NULL;
}
/*g_hash_table_foreach( rtsp_status, (GHFunc)rtsp_reset_hash_responses, NULL);*/
error_string = register_tap_listener(
"rtsp",
sp,
filter,
0,
rtspstat_reset,
rtspstat_packet,
rtspstat_draw);
if (error_string) {
/* error, we failed to attach to the tap. clean up */
g_free(sp->filter);
g_free(sp);
fprintf (stderr, "tshark: Couldn't register rtsp,stat tap: %s\n",
error_string->str);
g_string_free(error_string, TRUE);
exit(1);
}
rtsp_init_hash(sp);
}
static stat_tap_ui rtspstat_ui = {
REGISTER_STAT_GROUP_GENERIC,
NULL,
"rtsp,stat",
rtspstat_init,
0,
NULL
};
void
register_tap_listener_rtspstat(void)
{
register_stat_tap_ui(&rtspstat_ui, NULL);
}
/*
* Editor modelines - http://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:
*/