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/* packet-smrse.c
* Routines for SMRSE Short Message Relay Service packet dissection
* Ronnie Sahlberg 2004
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/asn1.h>
#include <wsutil/array.h>
#include "packet-ber.h"
#include "packet-smrse.h"
#define PNAME "Short Message Relaying Service"
#define PSNAME "SMRSE"
#define PFNAME "smrse"
#define TCP_PORT_SMRSE 4321 /* Not IANA registered */
void proto_register_smrse(void);
void proto_reg_handoff_smrse(void);
static dissector_handle_t smrse_handle;
/* Initialize the protocol and registered fields */
static int proto_smrse;
static int hf_smrse_reserved;
static int hf_smrse_tag;
static int hf_smrse_length;
static int hf_smrse_Octet_Format;
#include "packet-smrse-hf.c"
/* Initialize the subtree pointers */
static int ett_smrse;
#include "packet-smrse-ett.c"
#include "packet-smrse-fn.c"
static const value_string tag_vals[] = {
{ 1, "AliveTest" },
{ 2, "AliveTestRsp" },
{ 3, "Bind" },
{ 4, "BindRsp" },
{ 5, "BindFail" },
{ 6, "Unbind" },
{ 7, "MT" },
{ 8, "MO" },
{ 9, "Ack" },
{ 10, "Error" },
{ 11, "Alert" },
{ 0, NULL }
};
static int
dissect_smrse(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, void *data _U_)
{
proto_item *item = NULL;
proto_tree *tree = NULL;
uint8_t reserved, tag;
int offset=0;
asn1_ctx_t asn1_ctx;
asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, true, pinfo);
reserved=tvb_get_uint8(tvb, 0);
tag=tvb_get_uint8(tvb, 3);
if( reserved!= 126 )
return 0;
if( (tag<1)||(tag>11) )
return 0;
if(parent_tree){
item = proto_tree_add_item(parent_tree, proto_smrse, tvb, 0, -1, ENC_NA);
tree = proto_item_add_subtree(item, ett_smrse);
}
col_set_str(pinfo->cinfo, COL_PROTOCOL, "SMRSE");
col_add_str(pinfo->cinfo, COL_INFO, val_to_str(tag, tag_vals,"Unknown Tag:0x%02x"));
proto_tree_add_item(tree, hf_smrse_reserved, tvb, 0, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_smrse_length, tvb, 1, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_smrse_tag, tvb, 3, 1, ENC_BIG_ENDIAN);
switch(tag){
case 1:
case 2:
offset=4;
break;
case 3:
offset=dissect_smrse_SMR_Bind(false, tvb, 4, &asn1_ctx, tree, -1);
break;
case 4:
offset=dissect_smrse_SMR_Bind_Confirm(false, tvb, 4, &asn1_ctx, tree, -1);
break;
case 5:
offset=dissect_smrse_SMR_Bind_Failure(false, tvb, 4, &asn1_ctx, tree, -1);
break;
case 6:
offset=dissect_smrse_SMR_Unbind(false, tvb, 4, &asn1_ctx, tree, -1);
break;
case 7:
offset=dissect_smrse_RPDataMT(false, tvb, 4, &asn1_ctx, tree, -1);
break;
case 8:
offset=dissect_smrse_RPDataMO(false, tvb, 4, &asn1_ctx, tree, -1);
break;
case 9:
offset=dissect_smrse_RPAck(false, tvb, 4, &asn1_ctx, tree, -1);
break;
case 10:
offset=dissect_smrse_RPError(false, tvb, 4, &asn1_ctx, tree, -1);
break;
case 11:
offset=dissect_smrse_RPAlertSC(false, tvb, 4, &asn1_ctx, tree, -1);
break;
}
return offset;
}
/*--- proto_register_smrse ----------------------------------------------*/
void proto_register_smrse(void) {
/* List of fields */
static hf_register_info hf[] = {
{ &hf_smrse_reserved, {
"Reserved", "smrse.reserved", FT_UINT8, BASE_DEC,
NULL, 0, "Reserved byte, must be 126", HFILL }},
{ &hf_smrse_tag, {
"Tag", "smrse.tag", FT_UINT8, BASE_DEC,
VALS(tag_vals), 0, NULL, HFILL }},
{ &hf_smrse_length, {
"Length", "smrse.length", FT_UINT16, BASE_DEC,
NULL, 0, "Length of SMRSE PDU", HFILL }},
{ &hf_smrse_Octet_Format,
{ "octet-Format", "smrse.octet_Format",
FT_STRING, BASE_NONE, NULL, 0,
"SMS-Address/address-value/octet-format", HFILL }},
#include "packet-smrse-hfarr.c"
};
/* List of subtrees */
static int *ett[] = {
&ett_smrse,
#include "packet-smrse-ettarr.c"
};
/* Register protocol */
proto_smrse = proto_register_protocol(PNAME, PSNAME, PFNAME);
/* Register dissector */
smrse_handle = register_dissector(PFNAME, dissect_smrse, proto_smrse);
/* Register fields and subtrees */
proto_register_field_array(proto_smrse, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
/*--- proto_reg_handoff_smrse -------------------------------------------*/
void proto_reg_handoff_smrse(void) {
dissector_add_uint_with_preference("tcp.port",TCP_PORT_SMRSE, smrse_handle);
}
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