epan/dissectors/asn1/ftam/packet-ftam-template.c

   1 /* packet-ftam_asn1.c
   2  * Routine to dissect OSI ISO 8571 FTAM Protocol packets
   3  * based on the ASN.1 specification from http://www.itu.int/ITU-T/asn1/database/iso/8571-4/1988/
   4  *
   5  * also based on original handwritten dissector by
   6  * Yuriy Sidelnikov <YSidelnikov@hotmail.com>
   7  *
   8  * Anders Broman and Ronnie Sahlberg 2005 - 2006
   9  *
  10  * Wireshark - Network traffic analyzer
  11  * By Gerald Combs <gerald@wireshark.org>
  12  * Copyright 1998 Gerald Combs
  13  *
  14  * SPDX-License-Identifier: GPL-2.0-or-later
  15  */
  16
  17 #include "config.h"
  18
  19 #include <epan/packet.h>
  20 #include <epan/expert.h>
  21 #include <epan/oids.h>
  22 #include <epan/asn1.h>
  23 #include <wsutil/array.h>
  24
  25 #include "packet-ber.h"
  26 #include "packet-acse.h"
  27 #include "packet-ftam.h"
  28
  29 #define PNAME  "ISO 8571 FTAM"
  30 #define PSNAME "FTAM"
  31 #define PFNAME "ftam"
  32
  33 void proto_register_ftam(void);
  34 void proto_reg_handoff_ftam(void);
  35
  36 /* Initialize the protocol and registered fields */
  37 static int proto_ftam;
  38
  39 /* Declare the function to avoid a compiler warning */
  40 static int dissect_ftam_OR_Set(bool implicit_tag _U_, tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index _U_);
  41
  42 static int hf_ftam_unstructured_text;              /* ISO FTAM unstructured text */
  43 static int hf_ftam_unstructured_binary;            /* ISO FTAM unstructured binary */
  44 #include "packet-ftam-hf.c"
  45
  46 /* Initialize the subtree pointers */
  47 static int ett_ftam;
  48 #include "packet-ftam-ett.c"
  49
  50 static expert_field ei_ftam_zero_pdu;
  51
  52 #include "packet-ftam-fn.c"
  53
  54 /*
  55 * Dissect FTAM unstructured text
  56 */
  57 static int
  58 dissect_ftam_unstructured_text(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *parent_tree, void* data _U_)
  59 {
  60         proto_tree_add_item (parent_tree, hf_ftam_unstructured_text, tvb, 0, tvb_reported_length_remaining(tvb, 0), ENC_ASCII);
  61         return tvb_captured_length(tvb);
  62 }
  63
  64 /*
  65 * Dissect FTAM unstructured binary
  66 */
  67 static int
  68 dissect_ftam_unstructured_binary(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *parent_tree, void* data _U_)
  69 {
  70         proto_tree_add_item (parent_tree, hf_ftam_unstructured_binary, tvb, 0, tvb_reported_length_remaining(tvb, 0), ENC_NA);
  71         return tvb_captured_length(tvb);
  72 }
  73
  74 /*
  75 * Dissect FTAM PDUs inside a PPDU.
  76 */
  77 static int
  78 dissect_ftam(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, void* data _U_)
  79 {
  80         int offset = 0;
  81         int old_offset;
  82         proto_item *item=NULL;
  83         proto_tree *tree=NULL;
  84         asn1_ctx_t asn1_ctx;
  85
  86         asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, true, pinfo);
  87
  88         if(parent_tree){
  89                 item = proto_tree_add_item(parent_tree, proto_ftam, tvb, 0, -1, ENC_NA);
  90                 tree = proto_item_add_subtree(item, ett_ftam);
  91         }
  92         col_set_str(pinfo->cinfo, COL_PROTOCOL, "FTAM");
  93         col_clear(pinfo->cinfo, COL_INFO);
  94
  95         while (tvb_reported_length_remaining(tvb, offset) > 0){
  96                 old_offset=offset;
  97                 offset=dissect_ftam_PDU(false, tvb, offset, &asn1_ctx, tree, -1);
  98                 if(offset == old_offset){
  99                         proto_tree_add_expert(tree, pinfo, &ei_ftam_zero_pdu, tvb, offset, -1);
 100                         break;
 101                 }
 102         }
 103         return tvb_captured_length(tvb);
 104 }
 105
 106
 107 /*--- proto_register_ftam -------------------------------------------*/
 108 void proto_register_ftam(void) {
 109
 110   /* List of fields */
 111   static hf_register_info hf[] =
 112   {
 113      { &hf_ftam_unstructured_text,
 114        { "ISO FTAM unstructured text", "ftam.unstructured_text", FT_STRING,
 115           BASE_NONE, NULL, 0x0, NULL, HFILL } },
 116      { &hf_ftam_unstructured_binary,
 117        { "ISO FTAM unstructured binary", "ftam.unstructured_binary", FT_BYTES,
 118           BASE_NONE, NULL, 0x0, NULL, HFILL } },
 119 #include "packet-ftam-hfarr.c"
 120   };
 121
 122   /* List of subtrees */
 123   static int *ett[] = {
 124     &ett_ftam,
 125 #include "packet-ftam-ettarr.c"
 126   };
 127   static ei_register_info ei[] = {
 128     { &ei_ftam_zero_pdu, { "ftam.zero_pdu", PI_PROTOCOL, PI_ERROR, "Internal error, zero-byte FTAM PDU", EXPFILL }},
 129   };
 130
 131   expert_module_t* expert_ftam;
 132
 133   /* Register protocol */
 134   proto_ftam = proto_register_protocol(PNAME, PSNAME, PFNAME);
 135   register_dissector("ftam", dissect_ftam, proto_ftam);
 136   /* Register fields and subtrees */
 137   proto_register_field_array(proto_ftam, hf, array_length(hf));
 138   proto_register_subtree_array(ett, array_length(ett));
 139   expert_ftam = expert_register_protocol(proto_ftam);
 140   expert_register_field_array(expert_ftam, ei, array_length(ei));
 141
 142 }
 143
 144
 145 /*--- proto_reg_handoff_ftam --- */
 146 void proto_reg_handoff_ftam(void) {
 147         register_ber_oid_dissector("1.0.8571.1.1", dissect_ftam, proto_ftam,"iso-ftam(1)");
 148         register_ber_oid_dissector("1.0.8571.2.1", dissect_ftam, proto_ftam,"ftam-pci(1)");
 149         register_ber_oid_dissector("1.3.14.5.2.2", dissect_ftam, proto_ftam,"NIST file directory entry abstract syntax");
 150
 151         /* Unstructured text file document type FTAM-1 */
 152         register_ber_oid_dissector("1.0.8571.5.1", dissect_ftam_unstructured_text, proto_ftam,"ISO FTAM unstructured text");
 153         oid_add_from_string("ISO FTAM sequential text","1.0.8571.5.2");
 154         oid_add_from_string("FTAM unstructured text abstract syntax","1.0.8571.2.3");
 155         oid_add_from_string("FTAM simple-hierarchy","1.0.8571.2.5");
 156         oid_add_from_string("FTAM hierarchical file model","1.0.8571.3.1");
 157         oid_add_from_string("FTAM unstructured constraint set","1.0.8571.4.1");
 158
 159         /* Unstructured binary file document type FTAM-3 */
 160         register_ber_oid_dissector("1.0.8571.5.3", dissect_ftam_unstructured_binary, proto_ftam,"ISO FTAM unstructured binary");
 161         oid_add_from_string("FTAM unstructured binary abstract syntax","1.0.8571.2.4");
 162
 163         /* Filedirectory file document type NBS-9 */
 164         oid_add_from_string("NBS-9 FTAM file directory file","1.3.14.5.5.9");
 165
 166         /* Filedirectory file document type NBS-9 (WITH OLD NIST OIDs)*/
 167         oid_add_from_string("NBS-9-OLD FTAM file directory file","1.3.9999.1.5.9");
 168         oid_add_from_string("NIST file directory entry abstract syntax","1.3.9999.1.2.2");
 169 }