tap-protohierstat.c

   1 /* tap-protohierstat.c
   2  * protohierstat   2002 Ronnie Sahlberg
   3  *
   4  * $Id$
   5  *
   6  * Ethereal - Network traffic analyzer
   7  * By Gerald Combs <gerald@ethereal.com>
   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 /* This module provides ProtocolHierarchyStatistics for tethereal */
  26
  27 #ifdef HAVE_CONFIG_H
  28 # include "config.h"
  29 #endif
  30
  31 #include <stdio.h>
  32
  33 #ifdef HAVE_SYS_TYPES_H
  34 # include <sys/types.h>
  35 #endif
  36
  37 #include <string.h>
  38 #include "epan/packet_info.h"
  39 #include "epan/epan_dissect.h"
  40 #include "epan/proto.h"
  41 #include <epan/tap.h>
  42 #include <epan/stat.h>
  43 #include "register.h"
  44
  45 typedef struct _phs_t {
  46         struct _phs_t *sibling;
  47         struct _phs_t *child;
  48         struct _phs_t *parent;
  49         char *filter;
  50         int protocol;
  51         const char *proto_name;
  52         guint32 frames;
  53         guint32 bytes;
  54 } phs_t;
  55
  56
  57 static phs_t *
  58 new_phs_t(phs_t *parent)
  59 {
  60         phs_t *rs;
  61         rs=g_malloc(sizeof(phs_t));
  62         rs->sibling=NULL;
  63         rs->child=NULL;
  64         rs->parent=parent;
  65         rs->filter=NULL;
  66         rs->protocol=-1;
  67         rs->proto_name=NULL;
  68         rs->frames=0;
  69         rs->bytes=0;
  70         return rs;
  71 }
  72
  73
  74 static int
  75 protohierstat_packet(void *prs, packet_info *pinfo, epan_dissect_t *edt, const void *dummy _U_)
  76 {
  77         phs_t *rs=prs;
  78         phs_t *tmprs;
  79         proto_tree *tree;
  80         field_info *fi;
  81
  82         if(!edt){
  83                 return 0;
  84         }
  85         if(!edt->tree){
  86                 return 0;
  87         }
  88         if(!edt->tree->first_child){
  89                 return 0;
  90         }
  91
  92         for(tree=edt->tree->first_child;tree;tree=tree->next){
  93                 fi=PITEM_FINFO(tree);
  94
  95                 /* first time we saw a protocol at this leaf */
  96                 if(rs->protocol==-1){
  97                         rs->protocol=fi->hfinfo->id;
  98                         rs->proto_name=fi->hfinfo->abbrev;
  99                         rs->frames=1;
 100                         rs->bytes=pinfo->fd->pkt_len;
 101                         rs->child=new_phs_t(rs);
 102                         rs=rs->child;
 103                         continue;
 104                 }
 105
 106                 /* find this protocol in the list of siblings */
 107                 for(tmprs=rs;tmprs;tmprs=tmprs->sibling){
 108                         if(tmprs->protocol==fi->hfinfo->id){
 109                                 break;
 110                         }
 111                 }
 112
 113                 /* not found, then we must add it to the end of the list */
 114                 if(!tmprs){
 115                         for(tmprs=rs;tmprs->sibling;tmprs=tmprs->sibling)
 116                                 ;
 117                         tmprs->sibling=new_phs_t(rs->parent);
 118                         rs=tmprs->sibling;
 119                         rs->protocol=fi->hfinfo->id;
 120                         rs->proto_name=fi->hfinfo->abbrev;
 121                 } else {
 122                         rs=tmprs;
 123                 }
 124
 125                 rs->frames++;
 126                 rs->bytes+=pinfo->fd->pkt_len;
 127
 128                 if(!rs->child){
 129                         rs->child=new_phs_t(rs);
 130                 }
 131                 rs=rs->child;
 132         }
 133         return 1;
 134 }
 135
 136 static void
 137 phs_draw(phs_t *rs, int indentation)
 138 {
 139         int i;
 140         char str[80];
 141         for(;rs;rs=rs->sibling){
 142                 if(rs->protocol==-1){
 143                         return;
 144                 }
 145                 str[0]=0;
 146                 for(i=0;i<indentation;i++){
 147                         strcat(str,"  ");
 148                 }
 149                 strcat(str, rs->proto_name);
 150                 printf("%-40s frames:%d bytes:%d\n",str, rs->frames, rs->bytes);
 151                 phs_draw(rs->child, indentation+1);
 152         }
 153 }
 154
 155 static void
 156 protohierstat_draw(void *prs)
 157 {
 158         phs_t *rs=prs;
 159
 160         printf("\n");
 161         printf("===================================================================\n");
 162         printf("Protocol Hierarchy Statistics\n");
 163         printf("Filter: %s\n\n",rs->filter?rs->filter:"");
 164         phs_draw(rs,0);
 165         printf("===================================================================\n");
 166 }
 167
 168
 169 static void
 170 protohierstat_init(const char *optarg)
 171 {
 172         phs_t *rs;
 173         int pos=0;
 174         const char *filter=NULL;
 175         GString *error_string;
 176
 177         if(!strcmp("io,phs",optarg)){
 178                 filter="frame";
 179         } else if(sscanf(optarg,"io,phs,%n",&pos)==0){
 180                 if(pos){
 181                         filter=optarg+pos;
 182                 } else {
 183                         /* We must use a filter to guarantee that edt->tree
 184                            will be populated. "frame" matches everything so
 185                            that one is used instead of no filter.
 186                         */
 187                         filter="frame";
 188                 }
 189         } else {
 190                 fprintf(stderr, "tethereal: invalid \"-z io,phs[,<filter>]\" argument\n");
 191                 exit(1);
 192         }
 193
 194         rs=new_phs_t(NULL);
 195
 196         if(filter){
 197                 rs->filter=g_malloc(strlen(filter)+1);
 198                 strcpy(rs->filter, filter);
 199         } else {
 200                 rs->filter=NULL;
 201         }
 202
 203         error_string=register_tap_listener("frame", rs, filter, NULL, protohierstat_packet, protohierstat_draw);
 204         if(error_string){
 205                 /* error, we failed to attach to the tap. clean up */
 206                 g_free(rs->filter);
 207                 g_free(rs);
 208
 209                 fprintf(stderr, "tethereal: Couldn't register io,phs tap: %s\n",
 210                     error_string->str);
 211                 g_string_free(error_string, TRUE);
 212                 exit(1);
 213         }
 214 }
 215
 216
 217 void
 218 register_tap_listener_protohierstat(void)
 219 {
 220         register_stat_cmd_arg("io,phs", protohierstat_init);
 221 }
 222