asn1/smrse/packet-smrse-template.c

   1 /* packet-smrse.c
   2  * Routines for SMRSE Short Message Relay Service packet dissection
   3  *   Ronnie Sahlberg 2004
   4  *
   5  * $Id$
   6  *
   7  * Wireshark - Network traffic analyzer
   8  * By Gerald Combs <gerald@wireshark.org>
   9  * Copyright 1998 Gerald Combs
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License
  13  * as published by the Free Software Foundation; either version 2
  14  * of the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  24  */
  25
  26 #ifdef HAVE_CONFIG_H
  27 # include "config.h"
  28 #endif
  29
  30 #include <glib.h>
  31 #include <epan/packet.h>
  32 #include <epan/asn1.h>
  33
  34 #include <string.h>
  35
  36 #include "packet-ber.h"
  37 #include "packet-smrse.h"
  38
  39 #define PNAME  "Short Message Relaying Service"
  40 #define PSNAME "SMRSE"
  41 #define PFNAME "smrse"
  42
  43 #define TCP_PORT_SMRSE 4321
  44
  45 /* Initialize the protocol and registered fields */
  46 static int proto_smrse = -1;
  47 static int hf_smrse_reserved = -1;
  48 static int hf_smrse_tag = -1;
  49 static int hf_smrse_length = -1;
  50 static int hf_smrse_Octet_Format = -1;
  51 #include "packet-smrse-hf.c"
  52
  53 /* Initialize the subtree pointers */
  54 static gint ett_smrse = -1;
  55 #include "packet-smrse-ett.c"
  56
  57
  58 #include "packet-smrse-fn.c"
  59
  60 static const value_string tag_vals[] = {
  61         {  1,   "AliveTest" },
  62         {  2,   "AliveTestRsp" },
  63         {  3,   "Bind" },
  64         {  4,   "BindRsp" },
  65         {  5,   "BindFail" },
  66         {  6,   "Unbind" },
  67         {  7,   "MT" },
  68         {  8,   "MO" },
  69         {  9,   "Ack" },
  70         { 10,   "Error" },
  71         { 11,   "Alert" },
  72         { 0, NULL }
  73 };
  74
  75 static int
  76 dissect_smrse(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree)
  77 {
  78         proto_item *item = NULL;
  79         proto_tree *tree = NULL;
  80         guint8 reserved, tag;
  81         guint16 length;
  82         int offset=0;
  83         asn1_ctx_t asn1_ctx;
  84         asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo);
  85
  86         reserved=tvb_get_guint8(tvb, 0);
  87         length=tvb_get_ntohs(tvb,1);
  88         tag=tvb_get_guint8(tvb, 3);
  89
  90         if( reserved!= 126 )
  91                 return 0;
  92         if( (tag<1)||(tag>11) )
  93                 return 0;
  94
  95         if(parent_tree){
  96                 item = proto_tree_add_item(parent_tree, proto_smrse, tvb, 0, -1, FALSE);
  97                 tree = proto_item_add_subtree(item, ett_smrse);
  98         }
  99
 100         col_set_str(pinfo->cinfo, COL_PROTOCOL, "SMRSE");
 101         if (check_col(pinfo->cinfo, COL_INFO))
 102                 col_add_str(pinfo->cinfo, COL_INFO, val_to_str(tag, tag_vals,"Unknown Tag:0x%02x"));
 103
 104         proto_tree_add_item(tree, hf_smrse_reserved, tvb, 0, 1, FALSE);
 105         proto_tree_add_item(tree, hf_smrse_length, tvb, 1, 2, FALSE);
 106         proto_tree_add_item(tree, hf_smrse_tag, tvb, 3, 1, FALSE);
 107
 108         switch(tag){
 109         case 1:
 110         case 2:
 111                 offset=4;
 112                 break;
 113         case 3:
 114                 offset=dissect_smrse_SMR_Bind(FALSE, tvb, 4, &asn1_ctx, tree, -1);
 115                 break;
 116         case 4:
 117                 offset=dissect_smrse_SMR_Bind_Confirm(FALSE, tvb, 4, &asn1_ctx, tree, -1);
 118                 break;
 119         case 5:
 120                 offset=dissect_smrse_SMR_Bind_Failure(FALSE, tvb, 4, &asn1_ctx, tree, -1);
 121                 break;
 122         case 6:
 123                 offset=dissect_smrse_SMR_Unbind(FALSE, tvb, 4, &asn1_ctx, tree, -1);
 124                 break;
 125         case 7:
 126                 offset=dissect_smrse_RPDataMT(FALSE, tvb, 4, &asn1_ctx, tree, -1);
 127                 break;
 128         case 8:
 129                 offset=dissect_smrse_RPDataMO(FALSE, tvb, 4, &asn1_ctx, tree, -1);
 130                 break;
 131         case 9:
 132                 offset=dissect_smrse_RPAck(FALSE, tvb, 4, &asn1_ctx, tree, -1);
 133                 break;
 134         case 10:
 135                 offset=dissect_smrse_RPError(FALSE, tvb, 4, &asn1_ctx, tree, -1);
 136                 break;
 137         case 11:
 138                 offset=dissect_smrse_RPAlertSC(FALSE, tvb, 4, &asn1_ctx, tree, -1);
 139                 break;
 140         }
 141
 142         return offset;
 143 }
 144
 145 /*--- proto_register_smrse ----------------------------------------------*/
 146 void proto_register_smrse(void) {
 147
 148   /* List of fields */
 149   static hf_register_info hf[] = {
 150         { &hf_smrse_reserved, {
 151                 "Reserved", "smrse.reserved", FT_UINT8, BASE_DEC,
 152                 NULL, 0, "Reserved byte, must be 126", HFILL }},
 153         { &hf_smrse_tag, {
 154                 "Tag", "smrse.tag", FT_UINT8, BASE_DEC,
 155                 VALS(tag_vals), 0, NULL, HFILL }},
 156         { &hf_smrse_length, {
 157                 "Length", "smrse.length", FT_UINT16, BASE_DEC,
 158                 NULL, 0, "Length of SMRSE PDU", HFILL }},
 159     { &hf_smrse_Octet_Format,
 160       { "octet-Format", "smrse.octet_Format",
 161         FT_STRING, BASE_NONE, NULL, 0,
 162         "SMS-Address/address-value/octet-format", HFILL }},
 163
 164 #include "packet-smrse-hfarr.c"
 165   };
 166
 167   /* List of subtrees */
 168   static gint *ett[] = {
 169     &ett_smrse,
 170 #include "packet-smrse-ettarr.c"
 171   };
 172
 173   /* Register protocol */
 174   proto_smrse = proto_register_protocol(PNAME, PSNAME, PFNAME);
 175
 176   /* Register fields and subtrees */
 177   proto_register_field_array(proto_smrse, hf, array_length(hf));
 178   proto_register_subtree_array(ett, array_length(ett));
 179
 180 }
 181
 182
 183 /*--- proto_reg_handoff_smrse -------------------------------------------*/
 184 void proto_reg_handoff_smrse(void) {
 185   dissector_handle_t smrse_handle;
 186
 187   smrse_handle = new_create_dissector_handle(dissect_smrse, proto_smrse);
 188   dissector_add("tcp.port",TCP_PORT_SMRSE, smrse_handle);
 189 }
 190