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-rw-r--r--tap-bootpstat.c186
1 files changed, 186 insertions, 0 deletions
diff --git a/tap-bootpstat.c b/tap-bootpstat.c
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+/* tap-bootpstat.c
+ * boop_stat 2003 Jean-Michel FAYARD
+ *
+ * $Id: tap-bootpstat.c,v 1.1 2003/09/02 22:47:58 guy Exp $
+ *
+ * Ethereal - Network traffic analyzer
+ * By Gerald Combs <gerald@ethereal.com>
+ * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdio.h>
+
+#include "epan/packet_info.h"
+#include "tap.h"
+#include "register.h"
+#include <string.h>
+
+
+typedef const char* bootp_info_value_t;
+
+/* used to keep track of the statictics for an entire program interface */
+typedef struct _dhcp_stats_t {
+ char *filter;
+ GHashTable *hash;
+ guint index; /* Number of to display */
+} dhcpstat_t;
+/* used to keep track of a single DHCP message type */
+typedef struct _dhcp_message_type_t {
+ const char *name;
+ guint32 packets;
+ dhcpstat_t *sp; /* entire program interface */
+} dhcp_message_type_t;
+
+
+/* Not used anywhere at this moment */
+/*
+static void
+dhcp_free_hash( gpointer key _U_ , gpointer value, gpointer user_data _U_ )
+{
+ g_free(value);
+}
+*/
+
+static void
+dhcp_reset_hash(gchar *key _U_ , dhcp_message_type_t *data, gpointer ptr _U_ )
+{
+ data->packets = 0;
+}
+
+/* Update the entry corresponding to the number of packets of a special DHCP Message Type
+ * or create it if it don't exist.
+ */
+static void
+dhcp_draw_message_type(gchar *key _U_, dhcp_message_type_t *data, gchar * format )
+{
+ if ((data==NULL) || (data->packets==0))
+ return;
+ printf( format, data->name, data->packets);
+}
+static void
+dhcpstat_reset(void *psp)
+{
+ dhcpstat_t *sp=psp;
+ g_hash_table_foreach( sp->hash, (GHFunc)dhcp_reset_hash, NULL);
+}
+static int
+dhcpstat_packet(void *psp, packet_info *pinfo _U_, epan_dissect_t *edt _U_, void *pri)
+{
+ dhcpstat_t *sp=psp;
+ bootp_info_value_t value=pri;
+ dhcp_message_type_t *sc;
+
+ if (sp==NULL)
+ return 0;
+ sc = g_hash_table_lookup(
+ sp->hash,
+ value);
+ if (!sc) {
+ sc = g_malloc( sizeof(dhcp_message_type_t) );
+ sc -> packets = 1;
+ sc -> name = value;
+ sc -> sp = sp;
+ g_hash_table_insert(
+ sp->hash,
+ (gpointer) value,
+ sc);
+ } else {
+ /*g_warning("sc(%s)->packets++", sc->name);*/
+ sc->packets++;
+ }
+ return 1;
+}
+
+
+static void
+dhcpstat_draw(void *psp)
+{
+ dhcpstat_t *sp=psp;
+
+ printf("\n");
+ printf("===================================================================\n");
+
+ if (sp->filter==NULL)
+ printf("BOOTP Statistics\n");
+ else
+ printf("BOOTP Statistics with filter %s\n", sp->filter);
+ printf("BOOTP Option 53: DHCP Messages Types:\n");
+ printf("DHCP Message Type Packets nb\n" );
+ g_hash_table_foreach( sp->hash, (GHFunc) dhcp_draw_message_type,
+ "%23s %-9d\n" );
+ printf("===================================================================\n");
+
+}
+
+
+
+
+/* When called, this function will create a new instance of tap-boopstat.
+ */
+static void
+dhcpstat_init(char *optarg)
+{
+ dhcpstat_t *sp;
+ char *filter=NULL;
+ GString *error_string;
+
+ if (!strncmp (optarg, "bootp,stat,", 11)){
+ filter=optarg+11;
+ } else {
+ filter=NULL;
+ }
+
+ sp = g_malloc( sizeof(dhcpstat_t) );
+ sp->hash = g_hash_table_new( g_str_hash, g_str_equal);
+ if(filter){
+ sp->filter=g_malloc(strlen(filter)+1);
+ strcpy(sp->filter,filter);
+ } else {
+ sp->filter=NULL;
+ }
+ sp->index = 0; /* Nothing to display yet */
+
+ error_string = register_tap_listener(
+ "bootp",
+ sp,
+ filter,
+ dhcpstat_reset,
+ dhcpstat_packet,
+ dhcpstat_draw);
+ if (error_string){
+ /* error, we failed to attach to the tap. clean up */
+ g_free(sp->filter);
+ g_free(sp);
+ fprintf(stderr, "tethereal: Couldn't register dhcp,stat tap: %s\n",
+ error_string->str);
+ g_string_free(error_string, TRUE);
+ exit(1);
+ }
+}
+
+
+
+void
+register_tap_listener_gtkdhcpstat(void)
+{
+ register_ethereal_tap("bootp,stat,", dhcpstat_init);
+}
+