/src/wireshark/epan/dissectors/packet-cdt.c

Source
/* Do not modify this file. Changes will be overwritten.                      */
/* Generated automatically by the ASN.1 to Wireshark dissector compiler       */
/* packet-cdt.c                                                               */
/* asn2wrs.py -b -q -L -p cdt -c ./cdt.cnf -s ./packet-cdt-template -D . -O ../.. cdt.asn */

/* packet-cdt.c
 *
 * Routines for Compressed Data Type packet dissection.
 *
 * Copyright 2005, Stig Bjorlykke <stig@bjorlykke.org>, Thales Norway AS
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 *
 * Ref: STANAG 4406 Annex E
 */

#include "config.h"

#include <epan/packet.h>
#include <epan/oids.h>
#include <epan/expert.h>
#include <epan/asn1.h>
#include <wsutil/array.h>
#include "packet-ber.h"
#include "packet-p1.h"

#include "packet-cdt.h"

#define CDT_UNDEFINED  0
#define CDT_EXTERNAL   1
#define CDT_P1         2
#define CDT_P3         3
#define CDT_P7         4

void proto_register_cdt(void);
void proto_reg_handoff_cdt(void);

static proto_tree *top_tree;
static proto_item *cdt_item;

static uint32_t content_type;

/* Initialize the protocol and registered fields */
static int proto_cdt;
static int hf_cdt_CompressedData_PDU;             /* CompressedData */
static int hf_cdt_compressionAlgorithm;           /* CompressionAlgorithmIdentifier */
static int hf_cdt_compressedContentInfo;          /* CompressedContentInfo */
static int hf_cdt_algorithmID_ShortForm;          /* AlgorithmID_ShortForm */
static int hf_cdt_algorithmID_OID;                /* OBJECT_IDENTIFIER */
static int hf_cdt_contentType;                    /* T_contentType */
static int hf_cdt_contentType_ShortForm;          /* ContentType_ShortForm */
static int hf_cdt_contentType_OID;                /* T_contentType_OID */
static int hf_cdt_compressedContent;              /* CompressedContent */

/* Initialize the subtree pointers */
static int ett_cdt_CompressedData;
static int ett_cdt_CompressionAlgorithmIdentifier;
static int ett_cdt_CompressedContentInfo;
static int ett_cdt_T_contentType;

static expert_field ei_cdt_unable_compress_content;
static expert_field ei_cdt_unable_uncompress_content;


static const value_string cdt_AlgorithmID_ShortForm_vals[] = {
  {   0, "zlibCompress" },
  { 0, NULL }
};


static unsigned
dissect_cdt_AlgorithmID_ShortForm(bool implicit_tag _U_, tvbuff_t *tvb _U_, unsigned offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
  uint32_t value;

    offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
                                                &value);

  proto_item_append_text (cdt_item, ", %s",
                          val_to_str_const(value, cdt_AlgorithmID_ShortForm_vals,
                                      "unknown"));

  col_append_fstr (actx->pinfo->cinfo, COL_INFO, "%s ",
                   val_to_str_const(value, cdt_AlgorithmID_ShortForm_vals,
                               "unknown"));


  return offset;
}



static unsigned
dissect_cdt_OBJECT_IDENTIFIER(bool implicit_tag _U_, tvbuff_t *tvb _U_, unsigned offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
  offset = dissect_ber_object_identifier(implicit_tag, actx, tree, tvb, offset, hf_index, NULL);

  return offset;
}


static const value_string cdt_CompressionAlgorithmIdentifier_vals[] = {
  {   0, "algorithmID-ShortForm" },
  {   1, "algorithmID-OID" },
  { 0, NULL }
};

static const ber_choice_t CompressionAlgorithmIdentifier_choice[] = {
  {   0, &hf_cdt_algorithmID_ShortForm, BER_CLASS_CON, 0, BER_FLAGS_IMPLTAG, dissect_cdt_AlgorithmID_ShortForm },
  {   1, &hf_cdt_algorithmID_OID , BER_CLASS_CON, 1, BER_FLAGS_IMPLTAG, dissect_cdt_OBJECT_IDENTIFIER },
  { 0, NULL, 0, 0, 0, NULL }
};

static unsigned
dissect_cdt_CompressionAlgorithmIdentifier(bool implicit_tag _U_, tvbuff_t *tvb _U_, unsigned offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
  offset = dissect_ber_choice(actx, tree, tvb, offset,
                                 CompressionAlgorithmIdentifier_choice, hf_index, ett_cdt_CompressionAlgorithmIdentifier,
                                 NULL);

  return offset;
}


static const value_string cdt_ContentType_ShortForm_vals[] = {
  {   0, "unidentified" },
  {   1, "external" },
  {   2, "p1" },
  {   3, "p3" },
  {   4, "p7" },
  { 0, NULL }
};


static unsigned
dissect_cdt_ContentType_ShortForm(bool implicit_tag _U_, tvbuff_t *tvb _U_, unsigned offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {

    offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
                                                &content_type);

  proto_item_append_text (cdt_item, ", %s",
                          val_to_str_const(content_type, cdt_ContentType_ShortForm_vals,
                                      "unknown"));

  col_append_fstr (actx->pinfo->cinfo, COL_INFO, "%s ",
                   val_to_str_const(content_type, cdt_ContentType_ShortForm_vals,
                               "unknown"));


  return offset;
}



static unsigned
dissect_cdt_T_contentType_OID(bool implicit_tag _U_, tvbuff_t *tvb _U_, unsigned offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
  const char *obj_id = NULL;

    offset = dissect_ber_object_identifier_str(implicit_tag, actx, tree, tvb, offset, hf_index, &obj_id);

  if (obj_id) {
    const char *name = oid_resolved_from_string (actx->pinfo->pool, obj_id);

    if (!name) {
      name = obj_id;
    }

    proto_item_append_text (cdt_item, ", %s", name);

    col_append_fstr (actx->pinfo->cinfo, COL_INFO, "%s ", name);
  }


  return offset;
}


static const value_string cdt_T_contentType_vals[] = {
  {   0, "contentType-ShortForm" },
  {   1, "contentType-OID" },
  { 0, NULL }
};

static const ber_choice_t T_contentType_choice[] = {
  {   0, &hf_cdt_contentType_ShortForm, BER_CLASS_CON, 0, BER_FLAGS_IMPLTAG, dissect_cdt_ContentType_ShortForm },
  {   1, &hf_cdt_contentType_OID , BER_CLASS_CON, 1, BER_FLAGS_IMPLTAG, dissect_cdt_T_contentType_OID },
  { 0, NULL, 0, 0, 0, NULL }
};

static unsigned
dissect_cdt_T_contentType(bool implicit_tag _U_, tvbuff_t *tvb _U_, unsigned offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
  offset = dissect_ber_choice(actx, tree, tvb, offset,
                                 T_contentType_choice, hf_index, ett_cdt_T_contentType,
                                 NULL);

  return offset;
}



static unsigned
dissect_cdt_CompressedContent(bool implicit_tag _U_, tvbuff_t *tvb _U_, unsigned offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
  tvbuff_t   *next_tvb = NULL, *compr_tvb = NULL;
  unsigned    save_offset = offset;

    offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
                                       &compr_tvb);

  if (compr_tvb == NULL) {
    proto_tree_add_expert_remaining(top_tree, actx->pinfo, &ei_cdt_unable_compress_content,
              tvb, save_offset);
    col_append_str (actx->pinfo->cinfo, COL_INFO,
                    "[Error: Unable to get compressed content]");
    return offset;
  }

  next_tvb = tvb_child_uncompress_zlib(tvb, compr_tvb, 0, tvb_reported_length (compr_tvb));

  if (next_tvb == NULL) {
    proto_tree_add_expert_remaining(top_tree, actx->pinfo, &ei_cdt_unable_uncompress_content,
              tvb, save_offset);
    col_append_str (actx->pinfo->cinfo, COL_INFO,
                    "[Error: Unable to uncompress content]");
    return offset;
  }

  add_new_data_source (actx->pinfo, next_tvb, "Uncompressed Content");

   switch (content_type) {
   case CDT_UNDEFINED:
     call_data_dissector(next_tvb, actx->pinfo, top_tree);
     break;
   case CDT_EXTERNAL:
     dissect_unknown_ber (actx->pinfo, next_tvb, 0, top_tree);
     break;
   case CDT_P1:
     dissect_p1_mts_apdu (next_tvb, actx->pinfo, top_tree, NULL);
     break;
   default:
     call_data_dissector(next_tvb, actx->pinfo, top_tree);
     break;
   }


  return offset;
}


static const ber_sequence_t CompressedContentInfo_sequence[] = {
  { &hf_cdt_contentType     , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_cdt_T_contentType },
  { &hf_cdt_compressedContent, BER_CLASS_CON, 0, 0, dissect_cdt_CompressedContent },
  { NULL, 0, 0, 0, NULL }
};

static unsigned
dissect_cdt_CompressedContentInfo(bool implicit_tag _U_, tvbuff_t *tvb _U_, unsigned offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
  offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
                                   CompressedContentInfo_sequence, hf_index, ett_cdt_CompressedContentInfo);

  return offset;
}


static const ber_sequence_t CompressedData_sequence[] = {
  { &hf_cdt_compressionAlgorithm, BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_cdt_CompressionAlgorithmIdentifier },
  { &hf_cdt_compressedContentInfo, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_cdt_CompressedContentInfo },
  { NULL, 0, 0, 0, NULL }
};

unsigned
dissect_cdt_CompressedData(bool implicit_tag _U_, tvbuff_t *tvb _U_, unsigned offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
  content_type = 0;

    offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
                                   CompressedData_sequence, hf_index, ett_cdt_CompressedData);



  return offset;
}

/*--- PDUs ---*/

static int dissect_CompressedData_PDU(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_, void *data _U_) {
  unsigned offset = 0;
  asn1_ctx_t asn1_ctx;
  asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, true, pinfo);
  offset = dissect_cdt_CompressedData(false, tvb, offset, &asn1_ctx, tree, hf_cdt_CompressedData_PDU);
  return offset;
}



/*--- proto_register_cdt -------------------------------------------*/

/*
** Dissect Compressed Data Type
*/
void dissect_cdt (tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree)
{
  proto_tree *tree = NULL;

  /* save parent_tree so subdissectors can create new top nodes */
  top_tree = parent_tree;

  if (parent_tree) {
    cdt_item = proto_tree_add_item (parent_tree, proto_cdt, tvb, 0, -1, ENC_NA);
    tree = proto_item_add_subtree (cdt_item, ett_cdt_CompressedData);
  } else {
    cdt_item = NULL;
  }

  col_set_str (pinfo->cinfo, COL_PROTOCOL, "CDT");
  col_clear (pinfo->cinfo, COL_INFO);

  dissect_CompressedData_PDU (tvb, pinfo, tree, NULL);
}

void proto_register_cdt (void) {

  /* List of fields */
  static hf_register_info hf[] = {
    { &hf_cdt_CompressedData_PDU,
      { "CompressedData", "cdt.CompressedData_element",
        FT_NONE, BASE_NONE, NULL, 0,
        NULL, HFILL }},
    { &hf_cdt_compressionAlgorithm,
      { "compressionAlgorithm", "cdt.compressionAlgorithm",
        FT_UINT32, BASE_DEC, VALS(cdt_CompressionAlgorithmIdentifier_vals), 0,
        "CompressionAlgorithmIdentifier", HFILL }},
    { &hf_cdt_compressedContentInfo,
      { "compressedContentInfo", "cdt.compressedContentInfo_element",
        FT_NONE, BASE_NONE, NULL, 0,
        NULL, HFILL }},
    { &hf_cdt_algorithmID_ShortForm,
      { "algorithmID-ShortForm", "cdt.algorithmID_ShortForm",
        FT_INT32, BASE_DEC, VALS(cdt_AlgorithmID_ShortForm_vals), 0,
        NULL, HFILL }},
    { &hf_cdt_algorithmID_OID,
      { "algorithmID-OID", "cdt.algorithmID_OID",
        FT_OID, BASE_NONE, NULL, 0,
        "OBJECT_IDENTIFIER", HFILL }},
    { &hf_cdt_contentType,
      { "contentType", "cdt.contentType",
        FT_UINT32, BASE_DEC, VALS(cdt_T_contentType_vals), 0,
        NULL, HFILL }},
    { &hf_cdt_contentType_ShortForm,
      { "contentType-ShortForm", "cdt.contentType_ShortForm",
        FT_INT32, BASE_DEC, VALS(cdt_ContentType_ShortForm_vals), 0,
        NULL, HFILL }},
    { &hf_cdt_contentType_OID,
      { "contentType-OID", "cdt.contentType_OID",
        FT_OID, BASE_NONE, NULL, 0,
        NULL, HFILL }},
    { &hf_cdt_compressedContent,
      { "compressedContent", "cdt.compressedContent",
        FT_BYTES, BASE_NONE, NULL, 0,
        NULL, HFILL }},
  };

  /* List of subtrees */
  static int *ett[] = {
    &ett_cdt_CompressedData,
    &ett_cdt_CompressionAlgorithmIdentifier,
    &ett_cdt_CompressedContentInfo,
    &ett_cdt_T_contentType,
  };

  static ei_register_info ei[] = {
     { &ei_cdt_unable_compress_content, { "cdt.unable_compress_content", PI_UNDECODED, PI_ERROR, "Unable to get compressed content", EXPFILL }},
     { &ei_cdt_unable_uncompress_content, { "cdt.unable_uncompress_content", PI_UNDECODED, PI_ERROR, "Unable to get uncompressed content", EXPFILL }},
  };

  expert_module_t* expert_cdt;

  /* Register protocol */
  proto_cdt = proto_register_protocol ("Compressed Data Type", "CDT", "cdt");

  /* Register fields and subtrees */
  proto_register_field_array (proto_cdt, hf, array_length(hf));
  proto_register_subtree_array (ett, array_length(ett));
  expert_cdt = expert_register_protocol(proto_cdt);
  expert_register_field_array(expert_cdt, ei, array_length(ei));
}


/*--- proto_reg_handoff_cdt ---------------------------------------*/
void proto_reg_handoff_cdt (void) {
  register_ber_oid_dissector("1.3.26.0.4406.0.4.2", dissect_CompressedData_PDU, proto_cdt, "cdt");

}

Coverage Report

Created: 2026-06-30 07:22

Line	Count	Source
1		/* Do not modify this file. Changes will be overwritten. */
2		/* Generated automatically by the ASN.1 to Wireshark dissector compiler */
3		/* packet-cdt.c */
4		/* asn2wrs.py -b -q -L -p cdt -c ./cdt.cnf -s ./packet-cdt-template -D . -O ../.. cdt.asn */
5
6		/* packet-cdt.c
7		*
8		* Routines for Compressed Data Type packet dissection.
9		*
10		* Copyright 2005, Stig Bjorlykke <stig@bjorlykke.org>, Thales Norway AS
11		*
12		* Wireshark - Network traffic analyzer
13		* By Gerald Combs <gerald@wireshark.org>
14		* Copyright 1998 Gerald Combs
15		*
16		* SPDX-License-Identifier: GPL-2.0-or-later
17		*
18		* Ref: STANAG 4406 Annex E
19		*/
20
21		#include "config.h"
22
23		#include <epan/packet.h>
24		#include <epan/oids.h>
25		#include <epan/expert.h>
26		#include <epan/asn1.h>
27		#include <wsutil/array.h>
28		#include "packet-ber.h"
29		#include "packet-p1.h"
30
31		#include "packet-cdt.h"
32
33	0	#define CDT_UNDEFINED 0
34	0	#define CDT_EXTERNAL 1
35	0	#define CDT_P1 2
36		#define CDT_P3 3
37		#define CDT_P7 4
38
39		void proto_register_cdt(void);
40		void proto_reg_handoff_cdt(void);
41
42		static proto_tree *top_tree;
43		static proto_item *cdt_item;
44
45		static uint32_t content_type;
46
47		/* Initialize the protocol and registered fields */
48		static int proto_cdt;
49		static int hf_cdt_CompressedData_PDU; /* CompressedData */
50		static int hf_cdt_compressionAlgorithm; /* CompressionAlgorithmIdentifier */
51		static int hf_cdt_compressedContentInfo; /* CompressedContentInfo */
52		static int hf_cdt_algorithmID_ShortForm; /* AlgorithmID_ShortForm */
53		static int hf_cdt_algorithmID_OID; /* OBJECT_IDENTIFIER */
54		static int hf_cdt_contentType; /* T_contentType */
55		static int hf_cdt_contentType_ShortForm; /* ContentType_ShortForm */
56		static int hf_cdt_contentType_OID; /* T_contentType_OID */
57		static int hf_cdt_compressedContent; /* CompressedContent */
58
59		/* Initialize the subtree pointers */
60		static int ett_cdt_CompressedData;
61		static int ett_cdt_CompressionAlgorithmIdentifier;
62		static int ett_cdt_CompressedContentInfo;
63		static int ett_cdt_T_contentType;
64
65		static expert_field ei_cdt_unable_compress_content;
66		static expert_field ei_cdt_unable_uncompress_content;
67
68
69		static const value_string cdt_AlgorithmID_ShortForm_vals[] = {
70		{ 0, "zlibCompress" },
71		{ 0, NULL }
72		};
73
74
75		static unsigned
76	0	dissect_cdt_AlgorithmID_ShortForm(bool implicit_tag _U_, tvbuff_t tvb _U_, unsigned offset _U_, asn1_ctx_t actx _U_, proto_tree *tree _U_, int hf_index _U_) {
77	0	uint32_t value;
78
79	0	offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
80	0	&value);
81
82	0	proto_item_append_text (cdt_item, ", %s",
83	0	val_to_str_const(value, cdt_AlgorithmID_ShortForm_vals,
84	0	"unknown"));
85
86	0	col_append_fstr (actx->pinfo->cinfo, COL_INFO, "%s ",
87	0	val_to_str_const(value, cdt_AlgorithmID_ShortForm_vals,
88	0	"unknown"));
89
90
91	0	return offset;
92	0	}
93
94
95
96		static unsigned
97	0	dissect_cdt_OBJECT_IDENTIFIER(bool implicit_tag _U_, tvbuff_t tvb _U_, unsigned offset _U_, asn1_ctx_t actx _U_, proto_tree *tree _U_, int hf_index _U_) {
98	0	offset = dissect_ber_object_identifier(implicit_tag, actx, tree, tvb, offset, hf_index, NULL);
99
100	0	return offset;
101	0	}
102
103
104		static const value_string cdt_CompressionAlgorithmIdentifier_vals[] = {
105		{ 0, "algorithmID-ShortForm" },
106		{ 1, "algorithmID-OID" },
107		{ 0, NULL }
108		};
109
110		static const ber_choice_t CompressionAlgorithmIdentifier_choice[] = {
111		{ 0, &hf_cdt_algorithmID_ShortForm, BER_CLASS_CON, 0, BER_FLAGS_IMPLTAG, dissect_cdt_AlgorithmID_ShortForm },
112		{ 1, &hf_cdt_algorithmID_OID , BER_CLASS_CON, 1, BER_FLAGS_IMPLTAG, dissect_cdt_OBJECT_IDENTIFIER },
113		{ 0, NULL, 0, 0, 0, NULL }
114		};
115
116		static unsigned
117	0	dissect_cdt_CompressionAlgorithmIdentifier(bool implicit_tag _U_, tvbuff_t tvb _U_, unsigned offset _U_, asn1_ctx_t actx _U_, proto_tree *tree _U_, int hf_index _U_) {
118	0	offset = dissect_ber_choice(actx, tree, tvb, offset,
119	0	CompressionAlgorithmIdentifier_choice, hf_index, ett_cdt_CompressionAlgorithmIdentifier,
120	0	NULL);
121
122	0	return offset;
123	0	}
124
125
126		static const value_string cdt_ContentType_ShortForm_vals[] = {
127		{ 0, "unidentified" },
128		{ 1, "external" },
129		{ 2, "p1" },
130		{ 3, "p3" },
131		{ 4, "p7" },
132		{ 0, NULL }
133		};
134
135
136		static unsigned
137	0	dissect_cdt_ContentType_ShortForm(bool implicit_tag _U_, tvbuff_t tvb _U_, unsigned offset _U_, asn1_ctx_t actx _U_, proto_tree *tree _U_, int hf_index _U_) {
138
139	0	offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
140	0	&content_type);
141
142	0	proto_item_append_text (cdt_item, ", %s",
143	0	val_to_str_const(content_type, cdt_ContentType_ShortForm_vals,
144	0	"unknown"));
145
146	0	col_append_fstr (actx->pinfo->cinfo, COL_INFO, "%s ",
147	0	val_to_str_const(content_type, cdt_ContentType_ShortForm_vals,
148	0	"unknown"));
149
150
151	0	return offset;
152	0	}
153
154
155
156		static unsigned
157	0	dissect_cdt_T_contentType_OID(bool implicit_tag _U_, tvbuff_t tvb _U_, unsigned offset _U_, asn1_ctx_t actx _U_, proto_tree *tree _U_, int hf_index _U_) {
158	0	const char *obj_id = NULL;
159
160	0	offset = dissect_ber_object_identifier_str(implicit_tag, actx, tree, tvb, offset, hf_index, &obj_id);
161
162	0	if (obj_id) {
163	0	const char *name = oid_resolved_from_string (actx->pinfo->pool, obj_id);
164
165	0	if (!name) {
166	0	name = obj_id;
167	0	}
168
169	0	proto_item_append_text (cdt_item, ", %s", name);
170
171	0	col_append_fstr (actx->pinfo->cinfo, COL_INFO, "%s ", name);
172	0	}
173
174
175	0	return offset;
176	0	}
177
178
179		static const value_string cdt_T_contentType_vals[] = {
180		{ 0, "contentType-ShortForm" },
181		{ 1, "contentType-OID" },
182		{ 0, NULL }
183		};
184
185		static const ber_choice_t T_contentType_choice[] = {
186		{ 0, &hf_cdt_contentType_ShortForm, BER_CLASS_CON, 0, BER_FLAGS_IMPLTAG, dissect_cdt_ContentType_ShortForm },
187		{ 1, &hf_cdt_contentType_OID , BER_CLASS_CON, 1, BER_FLAGS_IMPLTAG, dissect_cdt_T_contentType_OID },
188		{ 0, NULL, 0, 0, 0, NULL }
189		};
190
191		static unsigned
192	0	dissect_cdt_T_contentType(bool implicit_tag _U_, tvbuff_t tvb _U_, unsigned offset _U_, asn1_ctx_t actx _U_, proto_tree *tree _U_, int hf_index _U_) {
193	0	offset = dissect_ber_choice(actx, tree, tvb, offset,
194	0	T_contentType_choice, hf_index, ett_cdt_T_contentType,
195	0	NULL);
196
197	0	return offset;
198	0	}
199
200
201
202		static unsigned
203	0	dissect_cdt_CompressedContent(bool implicit_tag _U_, tvbuff_t tvb _U_, unsigned offset _U_, asn1_ctx_t actx _U_, proto_tree *tree _U_, int hf_index _U_) {
204	0	tvbuff_t next_tvb = NULL, compr_tvb = NULL;
205	0	unsigned save_offset = offset;
206
207	0	offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
208	0	&compr_tvb);
209
210	0	if (compr_tvb == NULL) {
211	0	proto_tree_add_expert_remaining(top_tree, actx->pinfo, &ei_cdt_unable_compress_content,
212	0	tvb, save_offset);
213	0	col_append_str (actx->pinfo->cinfo, COL_INFO,
214	0	"[Error: Unable to get compressed content]");
215	0	return offset;
216	0	}
217
218	0	next_tvb = tvb_child_uncompress_zlib(tvb, compr_tvb, 0, tvb_reported_length (compr_tvb));
219
220	0	if (next_tvb == NULL) {
221	0	proto_tree_add_expert_remaining(top_tree, actx->pinfo, &ei_cdt_unable_uncompress_content,
222	0	tvb, save_offset);
223	0	col_append_str (actx->pinfo->cinfo, COL_INFO,
224	0	"[Error: Unable to uncompress content]");
225	0	return offset;
226	0	}
227
228	0	add_new_data_source (actx->pinfo, next_tvb, "Uncompressed Content");
229
230	0	switch (content_type) {
231	0	case CDT_UNDEFINED:
232	0	call_data_dissector(next_tvb, actx->pinfo, top_tree);
233	0	break;
234	0	case CDT_EXTERNAL:
235	0	dissect_unknown_ber (actx->pinfo, next_tvb, 0, top_tree);
236	0	break;
237	0	case CDT_P1:
238	0	dissect_p1_mts_apdu (next_tvb, actx->pinfo, top_tree, NULL);
239	0	break;
240	0	default:
241	0	call_data_dissector(next_tvb, actx->pinfo, top_tree);
242	0	break;
243	0	}
244
245
246	0	return offset;
247	0	}
248
249
250		static const ber_sequence_t CompressedContentInfo_sequence[] = {
251		{ &hf_cdt_contentType , BER_CLASS_ANY/choice/, -1/choice/, BER_FLAGS_NOOWNTAG\|BER_FLAGS_NOTCHKTAG, dissect_cdt_T_contentType },
252		{ &hf_cdt_compressedContent, BER_CLASS_CON, 0, 0, dissect_cdt_CompressedContent },
253		{ NULL, 0, 0, 0, NULL }
254		};
255
256		static unsigned
257	0	dissect_cdt_CompressedContentInfo(bool implicit_tag _U_, tvbuff_t tvb _U_, unsigned offset _U_, asn1_ctx_t actx _U_, proto_tree *tree _U_, int hf_index _U_) {
258	0	offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
259	0	CompressedContentInfo_sequence, hf_index, ett_cdt_CompressedContentInfo);
260
261	0	return offset;
262	0	}
263
264
265		static const ber_sequence_t CompressedData_sequence[] = {
266		{ &hf_cdt_compressionAlgorithm, BER_CLASS_ANY/choice/, -1/choice/, BER_FLAGS_NOOWNTAG\|BER_FLAGS_NOTCHKTAG, dissect_cdt_CompressionAlgorithmIdentifier },
267		{ &hf_cdt_compressedContentInfo, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_cdt_CompressedContentInfo },
268		{ NULL, 0, 0, 0, NULL }
269		};
270
271		unsigned
272	0	dissect_cdt_CompressedData(bool implicit_tag _U_, tvbuff_t tvb _U_, unsigned offset _U_, asn1_ctx_t actx _U_, proto_tree *tree _U_, int hf_index _U_) {
273	0	content_type = 0;
274
275	0	offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
276	0	CompressedData_sequence, hf_index, ett_cdt_CompressedData);
277
278
279
280	0	return offset;
281	0	}
282
283		/--- PDUs ---/
284
285	0	static int dissect_CompressedData_PDU(tvbuff_t tvb _U_, packet_info pinfo _U_, proto_tree tree _U_, void data _U_) {
286	0	unsigned offset = 0;
287	0	asn1_ctx_t asn1_ctx;
288	0	asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, true, pinfo);
289	0	offset = dissect_cdt_CompressedData(false, tvb, offset, &asn1_ctx, tree, hf_cdt_CompressedData_PDU);
290	0	return offset;
291	0	}
292
293
294
295		/--- proto_register_cdt -------------------------------------------/
296
297		/*
298		** Dissect Compressed Data Type
299		*/
300		void dissect_cdt (tvbuff_t tvb, packet_info pinfo, proto_tree *parent_tree)
301	0	{
302	0	proto_tree *tree = NULL;
303
304		/* save parent_tree so subdissectors can create new top nodes */
305	0	top_tree = parent_tree;
306
307	0	if (parent_tree) {
308	0	cdt_item = proto_tree_add_item (parent_tree, proto_cdt, tvb, 0, -1, ENC_NA);
309	0	tree = proto_item_add_subtree (cdt_item, ett_cdt_CompressedData);
310	0	} else {
311	0	cdt_item = NULL;
312	0	}
313
314	0	col_set_str (pinfo->cinfo, COL_PROTOCOL, "CDT");
315	0	col_clear (pinfo->cinfo, COL_INFO);
316
317	0	dissect_CompressedData_PDU (tvb, pinfo, tree, NULL);
318	0	}
319
320	14	void proto_register_cdt (void) {
321
322		/* List of fields */
323	14	static hf_register_info hf[] = {
324	14	{ &hf_cdt_CompressedData_PDU,
325	14	{ "CompressedData", "cdt.CompressedData_element",
326	14	FT_NONE, BASE_NONE, NULL, 0,
327	14	NULL, HFILL }},
328	14	{ &hf_cdt_compressionAlgorithm,
329	14	{ "compressionAlgorithm", "cdt.compressionAlgorithm",
330	14	FT_UINT32, BASE_DEC, VALS(cdt_CompressionAlgorithmIdentifier_vals), 0,
331	14	"CompressionAlgorithmIdentifier", HFILL }},
332	14	{ &hf_cdt_compressedContentInfo,
333	14	{ "compressedContentInfo", "cdt.compressedContentInfo_element",
334	14	FT_NONE, BASE_NONE, NULL, 0,
335	14	NULL, HFILL }},
336	14	{ &hf_cdt_algorithmID_ShortForm,
337	14	{ "algorithmID-ShortForm", "cdt.algorithmID_ShortForm",
338	14	FT_INT32, BASE_DEC, VALS(cdt_AlgorithmID_ShortForm_vals), 0,
339	14	NULL, HFILL }},
340	14	{ &hf_cdt_algorithmID_OID,
341	14	{ "algorithmID-OID", "cdt.algorithmID_OID",
342	14	FT_OID, BASE_NONE, NULL, 0,
343	14	"OBJECT_IDENTIFIER", HFILL }},
344	14	{ &hf_cdt_contentType,
345	14	{ "contentType", "cdt.contentType",
346	14	FT_UINT32, BASE_DEC, VALS(cdt_T_contentType_vals), 0,
347	14	NULL, HFILL }},
348	14	{ &hf_cdt_contentType_ShortForm,
349	14	{ "contentType-ShortForm", "cdt.contentType_ShortForm",
350	14	FT_INT32, BASE_DEC, VALS(cdt_ContentType_ShortForm_vals), 0,
351	14	NULL, HFILL }},
352	14	{ &hf_cdt_contentType_OID,
353	14	{ "contentType-OID", "cdt.contentType_OID",
354	14	FT_OID, BASE_NONE, NULL, 0,
355	14	NULL, HFILL }},
356	14	{ &hf_cdt_compressedContent,
357	14	{ "compressedContent", "cdt.compressedContent",
358	14	FT_BYTES, BASE_NONE, NULL, 0,
359	14	NULL, HFILL }},
360	14	};
361
362		/* List of subtrees */
363	14	static int *ett[] = {
364	14	&ett_cdt_CompressedData,
365	14	&ett_cdt_CompressionAlgorithmIdentifier,
366	14	&ett_cdt_CompressedContentInfo,
367	14	&ett_cdt_T_contentType,
368	14	};
369
370	14	static ei_register_info ei[] = {
371	14	{ &ei_cdt_unable_compress_content, { "cdt.unable_compress_content", PI_UNDECODED, PI_ERROR, "Unable to get compressed content", EXPFILL }},
372	14	{ &ei_cdt_unable_uncompress_content, { "cdt.unable_uncompress_content", PI_UNDECODED, PI_ERROR, "Unable to get uncompressed content", EXPFILL }},
373	14	};
374
375	14	expert_module_t* expert_cdt;
376
377		/* Register protocol */
378	14	proto_cdt = proto_register_protocol ("Compressed Data Type", "CDT", "cdt");
379
380		/* Register fields and subtrees */
381	14	proto_register_field_array (proto_cdt, hf, array_length(hf));
382	14	proto_register_subtree_array (ett, array_length(ett));
383	14	expert_cdt = expert_register_protocol(proto_cdt);
384	14	expert_register_field_array(expert_cdt, ei, array_length(ei));
385	14	}
386
387
388		/--- proto_reg_handoff_cdt ---------------------------------------/
389	14	void proto_reg_handoff_cdt (void) {
390	14	register_ber_oid_dissector("1.3.26.0.4406.0.4.2", dissect_CompressedData_PDU, proto_cdt, "cdt");
391
392	14	}