2003-09-02 22:47:59 +00:00
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/* tap-bootpstat.c
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* boop_stat 2003 Jean-Michel FAYARD
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*
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2004-07-18 00:24:25 +00:00
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* $Id$
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2003-09-02 22:47:59 +00:00
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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2005-08-19 09:29:41 +00:00
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#include <string.h>
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2003-09-02 22:47:59 +00:00
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#include "epan/packet_info.h"
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2004-09-29 00:06:36 +00:00
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#include <epan/tap.h>
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2005-08-20 20:06:05 +00:00
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#include <epan/stat_cmd_args.h>
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2003-09-02 22:47:59 +00:00
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#include "register.h"
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typedef const char* bootp_info_value_t;
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/* used to keep track of the statictics for an entire program interface */
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typedef struct _dhcp_stats_t {
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char *filter;
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GHashTable *hash;
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guint index; /* Number of to display */
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} dhcpstat_t;
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/* used to keep track of a single DHCP message type */
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typedef struct _dhcp_message_type_t {
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const char *name;
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guint32 packets;
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dhcpstat_t *sp; /* entire program interface */
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} dhcp_message_type_t;
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/* Not used anywhere at this moment */
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/*
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static void
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dhcp_free_hash( gpointer key _U_ , gpointer value, gpointer user_data _U_ )
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{
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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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dhcp_reset_hash(gchar *key _U_ , dhcp_message_type_t *data, gpointer ptr _U_ )
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{
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data->packets = 0;
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}
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/* Update the entry corresponding to the number of packets of a special DHCP Message Type
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* or create it if it don't exist.
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*/
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static void
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dhcp_draw_message_type(gchar *key _U_, dhcp_message_type_t *data, gchar * format )
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{
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if ((data==NULL) || (data->packets==0))
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return;
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printf( format, data->name, data->packets);
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}
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static void
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dhcpstat_reset(void *psp)
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{
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dhcpstat_t *sp=psp;
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g_hash_table_foreach( sp->hash, (GHFunc)dhcp_reset_hash, NULL);
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}
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static int
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2005-01-01 02:57:02 +00:00
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dhcpstat_packet(void *psp, packet_info *pinfo _U_, epan_dissect_t *edt _U_, const void *pri)
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2003-09-02 22:47:59 +00:00
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{
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dhcpstat_t *sp=psp;
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2005-01-01 02:57:02 +00:00
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const bootp_info_value_t value=pri;
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2003-09-02 22:47:59 +00:00
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dhcp_message_type_t *sc;
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if (sp==NULL)
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return 0;
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sc = g_hash_table_lookup(
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sp->hash,
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value);
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if (!sc) {
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sc = g_malloc( sizeof(dhcp_message_type_t) );
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sc -> packets = 1;
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sc -> name = value;
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sc -> sp = sp;
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g_hash_table_insert(
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sp->hash,
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(gpointer) value,
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sc);
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} else {
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/*g_warning("sc(%s)->packets++", sc->name);*/
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sc->packets++;
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}
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return 1;
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}
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static void
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dhcpstat_draw(void *psp)
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{
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dhcpstat_t *sp=psp;
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printf("\n");
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printf("===================================================================\n");
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if (sp->filter==NULL)
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printf("BOOTP Statistics\n");
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else
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printf("BOOTP Statistics with filter %s\n", sp->filter);
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printf("BOOTP Option 53: DHCP Messages Types:\n");
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printf("DHCP Message Type Packets nb\n" );
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g_hash_table_foreach( sp->hash, (GHFunc) dhcp_draw_message_type,
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"%23s %-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 tap-boopstat.
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*/
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static void
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2006-02-11 13:05:24 +00:00
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dhcpstat_init(const char *optarg, void* userdata _U_)
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2003-09-02 22:47:59 +00:00
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{
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dhcpstat_t *sp;
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2005-08-06 03:44:55 +00:00
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const char *filter=NULL;
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2003-09-02 22:47:59 +00:00
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GString *error_string;
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if (!strncmp (optarg, "bootp,stat,", 11)){
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filter=optarg+11;
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} else {
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filter=NULL;
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}
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sp = g_malloc( sizeof(dhcpstat_t) );
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sp->hash = g_hash_table_new( g_str_hash, g_str_equal);
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if(filter){
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sp->filter=g_malloc(strlen(filter)+1);
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strcpy(sp->filter,filter);
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} else {
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sp->filter=NULL;
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}
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sp->index = 0; /* Nothing to display yet */
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error_string = register_tap_listener(
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"bootp",
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sp,
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filter,
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dhcpstat_reset,
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dhcpstat_packet,
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dhcpstat_draw);
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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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fprintf(stderr, "tethereal: Couldn't register dhcp,stat tap: %s\n",
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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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}
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void
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register_tap_listener_gtkdhcpstat(void)
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{
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2006-02-11 13:05:24 +00:00
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register_stat_cmd_arg("bootp,stat,", dhcpstat_init,NULL);
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2003-09-02 22:47:59 +00:00
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}
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