forked from osmocom/wireshark
290 lines
6.9 KiB
C
290 lines
6.9 KiB
C
/* tap-rtspstat.c
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* tap-rtspstat March 2011
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*
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* Stephane GORSE (Orange Labs / France Telecom)
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* Copied from Jean-Michel FAYARD's works (HTTP)
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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 <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <glib.h>
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#include <epan/packet_info.h>
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#include <epan/value_string.h>
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#include <epan/tap.h>
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#include <epan/stat_tap_ui.h>
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#include <epan/dissectors/packet-rtsp.h>
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#include <wsutil/wslog.h>
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#include <wsutil/cmdarg_err.h>
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void register_tap_listener_rtspstat(void);
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/* used to keep track of the statictics for an entire program interface */
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typedef struct _rtsp_stats_t {
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char *filter;
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GHashTable *hash_responses;
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GHashTable *hash_requests;
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} rtspstat_t;
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/* used to keep track of the stats for a specific response code
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* for example it can be { 3, 404, "Not Found" ,...}
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* which means we captured 3 reply rtsp/1.1 404 Not Found */
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typedef struct _rtsp_response_code_t {
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guint32 packets; /* 3 */
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guint response_code; /* 404 */
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const gchar *name; /* Not Found */
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rtspstat_t *sp;
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} rtsp_response_code_t;
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/* used to keep track of the stats for a specific request string */
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typedef struct _rtsp_request_methode_t {
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gchar *response; /* eg. : SETUP */
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guint32 packets;
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rtspstat_t *sp;
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} rtsp_request_methode_t;
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/* insert some entries */
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static void
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rtsp_init_hash( rtspstat_t *sp)
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{
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int i;
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sp->hash_responses = g_hash_table_new(g_direct_hash, g_direct_equal);
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for (i=0 ; rtsp_status_code_vals[i].strptr ; i++ )
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{
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rtsp_response_code_t *sc = g_new (rtsp_response_code_t, 1);
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sc->packets = 0;
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sc->response_code = rtsp_status_code_vals[i].value;
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sc->name = rtsp_status_code_vals[i].strptr;
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sc->sp = sp;
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g_hash_table_insert( sc->sp->hash_responses, GINT_TO_POINTER(rtsp_status_code_vals[i].value), sc);
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}
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sp->hash_requests = g_hash_table_new( g_str_hash, g_str_equal);
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}
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static void
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rtsp_draw_hash_requests( gchar *key _U_ , rtsp_request_methode_t *data, gchar * format)
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{
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if (data->packets == 0)
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return;
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printf( format, data->response, data->packets);
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}
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static void
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rtsp_draw_hash_responses( gpointer* key _U_ , rtsp_response_code_t *data, char * format)
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{
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if (data == NULL) {
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ws_warning("No data available, key=%d\n", GPOINTER_TO_INT(key));
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exit(EXIT_FAILURE);
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}
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if (data->packets == 0)
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return;
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/* " RTSP %3d %-35s %9d packets", */
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printf(format, data->response_code, data->name, data->packets );
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}
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/* NOT USED at this moment */
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/*
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static void
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rtsp_free_hash( gpointer key, gpointer value, gpointer user_data _U_ )
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{
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g_free(key);
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g_free(value);
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}
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*/
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static void
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rtsp_reset_hash_responses(gchar *key _U_ , rtsp_response_code_t *data, gpointer ptr _U_ )
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{
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data->packets = 0;
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}
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static void
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rtsp_reset_hash_requests(gchar *key _U_ , rtsp_request_methode_t *data, gpointer ptr _U_ )
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{
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data->packets = 0;
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}
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static void
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rtspstat_reset(void *psp )
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{
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rtspstat_t *sp = (rtspstat_t *)psp;
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g_hash_table_foreach( sp->hash_responses, (GHFunc)rtsp_reset_hash_responses, NULL);
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g_hash_table_foreach( sp->hash_requests, (GHFunc)rtsp_reset_hash_requests, NULL);
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}
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static tap_packet_status
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rtspstat_packet(void *psp , packet_info *pinfo _U_, epan_dissect_t *edt _U_, const void *pri, tap_flags_t flags _U_)
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{
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const rtsp_info_value_t *value = (const rtsp_info_value_t *)pri;
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rtspstat_t *sp = (rtspstat_t *) psp;
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/* We are only interested in reply packets with a status code */
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/* Request or reply packets ? */
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if (value->response_code != 0) {
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rtsp_response_code_t *sc;
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sc = (rtsp_response_code_t *)g_hash_table_lookup(
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sp->hash_responses,
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GINT_TO_POINTER(value->response_code));
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if (sc == NULL) {
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gint key;
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/* non standard status code ; we classify it as others
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* in the relevant category (Informational,Success,Redirection,Client Error,Server Error)
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*/
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int i = value->response_code;
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if ((i < 100) || (i >= 600)) {
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return TAP_PACKET_DONT_REDRAW;
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}
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else if (i < 200) {
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key = 199; /* Hopefully, this status code will never be used */
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}
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else if (i < 300) {
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key = 299;
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}
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else if (i < 400) {
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key = 399;
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}
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else if (i < 500) {
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key = 499;
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}
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else {
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key = 599;
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}
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sc = (rtsp_response_code_t *)g_hash_table_lookup(
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sp->hash_responses,
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GINT_TO_POINTER(key));
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if (sc == NULL)
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return TAP_PACKET_DONT_REDRAW;
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}
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sc->packets++;
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}
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else if (value->request_method) {
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rtsp_request_methode_t *sc;
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sc = (rtsp_request_methode_t *)g_hash_table_lookup(
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sp->hash_requests,
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value->request_method);
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if (sc == NULL) {
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sc = g_new(rtsp_request_methode_t, 1);
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sc->response = g_strdup( value->request_method );
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sc->packets = 1;
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sc->sp = sp;
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g_hash_table_insert( sp->hash_requests, sc->response, sc);
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} else {
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sc->packets++;
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}
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} else {
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return TAP_PACKET_DONT_REDRAW;
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}
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return TAP_PACKET_REDRAW;
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}
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static void
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rtspstat_draw(void *psp )
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{
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rtspstat_t *sp = (rtspstat_t *)psp;
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printf("\n");
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printf("===================================================================\n");
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if (!sp->filter || !sp->filter[0])
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printf("RTSP Statistics\n");
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else
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printf("RTSP Statistics with filter %s\n", sp->filter);
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printf("* RTSP Response Status Codes Packets\n");
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g_hash_table_foreach( sp->hash_responses, (GHFunc)rtsp_draw_hash_responses,
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(gpointer)" %3d %-35s %9d\n");
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printf("* RTSP Request Methods Packets\n");
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g_hash_table_foreach( sp->hash_requests, (GHFunc)rtsp_draw_hash_requests,
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(gpointer)" %-39s %9d\n");
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printf("===================================================================\n");
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}
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/* When called, this function will create a new instance of rtspstat.
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*/
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static void
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rtspstat_init(const char *opt_arg, void *userdata _U_)
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{
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rtspstat_t *sp;
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const char *filter = NULL;
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GString *error_string;
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if (!strncmp (opt_arg, "rtsp,stat,", 10)) {
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filter = opt_arg+10;
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} else {
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filter = NULL;
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}
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sp = g_new(rtspstat_t, 1);
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sp->filter = g_strdup(filter);
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/*g_hash_table_foreach( rtsp_status, (GHFunc)rtsp_reset_hash_responses, NULL);*/
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error_string = register_tap_listener(
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"rtsp",
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sp,
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filter,
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0,
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rtspstat_reset,
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rtspstat_packet,
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rtspstat_draw,
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NULL);
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if (error_string) {
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/* error, we failed to attach to the tap. clean up */
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g_free(sp->filter);
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g_free(sp);
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cmdarg_err("Couldn't register rtsp,stat tap: %s",
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error_string->str);
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g_string_free(error_string, TRUE);
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exit(1);
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}
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rtsp_init_hash(sp);
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}
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static stat_tap_ui rtspstat_ui = {
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REGISTER_STAT_GROUP_GENERIC,
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NULL,
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"rtsp,stat",
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rtspstat_init,
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0,
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NULL
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};
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void
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register_tap_listener_rtspstat(void)
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{
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register_stat_tap_ui(&rtspstat_ui, NULL);
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}
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/*
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* Editor modelines - https://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 8
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* tab-width: 8
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* indent-tabs-mode: t
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* End:
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*
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* vi: set shiftwidth=8 tabstop=8 noexpandtab:
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* :indentSize=8:tabSize=8:noTabs=false:
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*/
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