gtk/bootp_stat.c

   1 /* bootp_stat.c
   2  * boop_stat   2003 Jean-Michel FAYARD
   3  *
   4  * $Id$
   5  *
   6  * Wireshark - Network traffic analyzer
   7  * By Gerald Combs <gerald@wireshark.org>
   8  * Copyright 1998 Gerald Combs
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License
  12  * as published by the Free Software Foundation; either version 2
  13  * of the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  23  */
  24
  25 /* #define DEBUG        do{ printf("%s:%d  ",__FILE__,__LINE__);} while(0); */
  26 #ifdef HAVE_CONFIG_H
  27 # include "config.h"
  28 #endif
  29
  30 #include <gtk/gtk.h>
  31 #include <string.h>
  32
  33 #include <epan/packet_info.h>
  34 #include <epan/epan.h>
  35
  36 #include "simple_dialog.h"
  37 #include "gui_utils.h"
  38 #include "dlg_utils.h"
  39 #include <epan/tap.h>
  40 #include "../register.h"
  41 #include "../globals.h"
  42 #include "compat_macros.h"
  43 #include "../stat_menu.h"
  44 #include "../tap_dfilter_dlg.h"
  45
  46 typedef const char* bootp_info_value_t;
  47
  48 /* used to keep track of the statictics for an entire program interface */
  49 typedef struct _dhcp_stats_t {
  50         char            *filter;
  51         GtkWidget       *win;
  52         GHashTable      *hash;
  53         GtkWidget       *table_message_type;
  54         guint            index; /* Number of  to display */
  55 } dhcpstat_t;
  56 /* used to keep track of a single DHCP message type */
  57 typedef struct _dhcp_message_type_t {
  58         const char      *name;
  59         guint32          packets;
  60         GtkWidget       *widget;/* label in which we print the number of packets */
  61         dhcpstat_t      *sp;    /* entire program interface */
  62 } dhcp_message_type_t;
  63
  64 static void
  65 dhcp_free_hash( gpointer key _U_ , gpointer value, gpointer user_data _U_ )
  66 {
  67         g_free(value);
  68 }
  69 static void
  70 dhcp_reset_hash(gchar *key _U_ , dhcp_message_type_t *data, gpointer ptr _U_ )
  71 {
  72         data->packets = 0;
  73 }
  74
  75 /* Update the entry corresponding to the number of packets of a special DHCP Message Type
  76  * or create it if it don't exist.
  77  */
  78 static void
  79 dhcp_draw_message_type(gchar *key _U_, dhcp_message_type_t *data, gchar * unused _U_ )
  80 {
  81         char string_buff[256];
  82
  83         if ((data==NULL) || (data->packets==0))
  84                 return;
  85         if (data->widget==NULL){        /* create an entry in the table */
  86                 GtkWidget       *tmp;
  87                 int x = 2*((data->sp->index) % 2);
  88                 int y = (data->sp->index) /2;
  89
  90
  91                 /* Maybe we should display the hexadecimal value ? */
  92                 /* g_snprintf(string_buff, 256, "%s  (0X%x)", data->name, *key); */
  93                 tmp = gtk_label_new( data->name  /* string_buff */ );
  94                 gtk_table_attach_defaults(GTK_TABLE(data->sp->table_message_type), tmp, x, x+1, y, y+1);
  95                 gtk_label_set_justify(GTK_LABEL(tmp), GTK_JUSTIFY_LEFT);
  96                 gtk_widget_show(tmp);
  97
  98                 g_snprintf( string_buff, 256, "%9d", data->packets );
  99                 data->widget = gtk_label_new( string_buff );
 100                 gtk_table_attach_defaults(GTK_TABLE(data->sp->table_message_type), data->widget, x+1, x+2, y, y+1);
 101                 gtk_label_set_justify(GTK_LABEL(data->widget), GTK_JUSTIFY_LEFT);
 102                 gtk_widget_show( data->widget );
 103
 104                 data->sp->index++;
 105         } else {
 106                 /* Just update the label string */
 107                 g_snprintf( string_buff, 256, "%9d", data->packets );
 108                 gtk_label_set( GTK_LABEL(data->widget), string_buff);
 109         }
 110 }
 111 static void
 112 dhcpstat_reset(void *psp)
 113 {
 114         dhcpstat_t *sp=psp;
 115         g_hash_table_foreach( sp->hash, (GHFunc)dhcp_reset_hash, NULL);
 116 }
 117 static int
 118 dhcpstat_packet(void *psp, packet_info *pinfo _U_, epan_dissect_t *edt _U_, const void *pri)
 119 {
 120         dhcpstat_t *sp=psp;
 121         const bootp_info_value_t value=pri;
 122         dhcp_message_type_t *sc;
 123
 124         if (sp==NULL)
 125                 return 0;
 126         sc = g_hash_table_lookup(
 127                         sp->hash,
 128                         value);
 129         if (!sc) {
 130                 /*g_warning("%s:%d What's Wrong for %s, doc ?", __FILE__, __LINE__, value);*/
 131                 sc = g_malloc( sizeof(dhcp_message_type_t) );
 132                 sc -> packets = 1;
 133                 sc -> name = value;
 134                 sc -> widget=NULL;
 135                 sc -> sp = sp;
 136                 g_hash_table_insert(
 137                                 sp->hash,
 138                                 (gpointer) value,
 139                                 sc);
 140         } else {
 141                 /*g_warning("sc(%s)->packets++", sc->name);*/
 142                 sc->packets++;
 143         }
 144         return 1;
 145 }
 146
 147
 148 static void
 149 dhcpstat_draw(void *psp)
 150 {
 151         dhcpstat_t *sp=psp;
 152         guint index;
 153
 154         index=sp->index;
 155         g_hash_table_foreach( sp->hash, (GHFunc) dhcp_draw_message_type, NULL );
 156         if (index != sp->index){
 157                 /* We have inserted a new entry corresponding to a status code ,
 158                  * let's resize the table */
 159                 gtk_table_resize ( GTK_TABLE(sp->table_message_type), sp->index  % 2 , 4);
 160         }
 161
 162 }
 163
 164
 165
 166 /* since the gtk2 implementation of tap is multithreaded we must protect
 167  * remove_tap_listener() from modifying the list while draw_tap_listener()
 168  * is running.  the other protected block is in main.c
 169  *
 170  * there should not be any other critical regions in gtk2
 171  */
 172 void protect_thread_critical_region(void);
 173 void unprotect_thread_critical_region(void);
 174 static void
 175 win_destroy_cb(GtkWindow *win _U_, gpointer data)
 176 {
 177         dhcpstat_t *sp=(dhcpstat_t *)data;
 178
 179         protect_thread_critical_region();
 180         remove_tap_listener(sp);
 181         unprotect_thread_critical_region();
 182
 183         g_free(sp->filter);
 184         g_hash_table_foreach( sp->hash, (GHFunc)dhcp_free_hash, NULL);
 185         g_hash_table_destroy( sp->hash);
 186         g_free(sp);
 187 }
 188
 189
 190 /* When called, this function will create a new instance of gtk2-dhcpstat.
 191  */
 192 static void
 193 dhcpstat_init(const char *optarg, void *userdata _U_)
 194 {
 195         dhcpstat_t *sp;
 196         const char      *filter=NULL;
 197         char            *title=NULL;
 198         GString         *error_string;
 199         GtkWidget       *message_type_fr;
 200         GtkWidget       *vbox;
 201         GtkWidget       *bt_close;
 202         GtkWidget       *bbox;
 203
 204         if (strncmp (optarg, "bootp,stat,", 11) == 0){
 205                 filter=optarg+11;
 206         } else {
 207                 filter=NULL;
 208         }
 209
 210         sp = g_malloc( sizeof(dhcpstat_t) );
 211         sp->hash = g_hash_table_new( g_str_hash, g_str_equal);
 212         if(filter){
 213                 sp->filter=g_strdup(filter);
 214                 title=g_strdup_printf("DHCP statistics with filter: %s", filter);
 215         } else {
 216                 sp->filter=NULL;
 217                 title=g_strdup("DHCP statistics");
 218         }
 219
 220         /* top level window */
 221         sp->win = window_new(GTK_WINDOW_TOPLEVEL, title);
 222         g_free(title);
 223
 224         vbox = gtk_vbox_new(FALSE, 3);
 225         gtk_container_add(GTK_CONTAINER(sp->win), vbox);
 226         gtk_container_set_border_width(GTK_CONTAINER(vbox), 12);
 227
 228         /* Status Codes frame */
 229         message_type_fr = gtk_frame_new("DHCP Message Type");
 230         gtk_container_add(GTK_CONTAINER(vbox), message_type_fr);
 231         gtk_widget_show(message_type_fr);
 232
 233         sp->table_message_type = gtk_table_new( 0, 4, FALSE);
 234         gtk_table_set_col_spacings( GTK_TABLE(sp->table_message_type), 10);
 235         gtk_container_add( GTK_CONTAINER( message_type_fr), sp->table_message_type);
 236         gtk_container_set_border_width( GTK_CONTAINER(sp->table_message_type) , 10);
 237         sp->index = 0;          /* Nothing to display yet */
 238
 239
 240         error_string = register_tap_listener(
 241                         "bootp",
 242                         sp,
 243                         filter,
 244                         dhcpstat_reset,
 245                         dhcpstat_packet,
 246                         dhcpstat_draw);
 247         if (error_string){
 248                 /* error, we failed to attach to the tap. clean up */
 249                 simple_dialog( ESD_TYPE_ERROR, ESD_BTN_OK, error_string->str );
 250                 g_free(sp->filter);
 251                 g_free(sp);
 252                 g_string_free(error_string, TRUE);
 253                 return ;
 254         }
 255
 256         /* Button row. */
 257         bbox = dlg_button_row_new(GTK_STOCK_CLOSE, NULL);
 258         gtk_box_pack_start(GTK_BOX(vbox), bbox, FALSE, FALSE, 0);
 259
 260         bt_close = OBJECT_GET_DATA(bbox, GTK_STOCK_CLOSE);
 261         window_set_cancel_button(sp->win, bt_close, window_cancel_button_cb);
 262
 263         SIGNAL_CONNECT(sp->win, "delete_event", window_delete_event_cb, NULL);
 264         SIGNAL_CONNECT(sp->win, "destroy", win_destroy_cb, sp);
 265
 266         gtk_widget_show_all(sp->win);
 267
 268         window_present(sp->win);
 269
 270         cf_retap_packets(&cfile, FALSE);
 271 }
 272
 273 static tap_dfilter_dlg dhcp_stat_dlg = {
 274         "BOOTP-DHCP Packet Counter",
 275         "bootp,stat",
 276         dhcpstat_init,
 277         -1
 278 };
 279
 280 void
 281 register_tap_listener_gtkdhcpstat(void)
 282 {
 283         register_dfilter_stat(&dhcp_stat_dlg, "BOOTP-DHCP",
 284             REGISTER_STAT_GROUP_NONE);
 285 }