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wireshark/epan/dissectors/packet-goose.c

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/* Do not modify this file. Changes will be overwritten. */
/* Generated automatically by the ASN.1 to Wireshark dissector compiler */
/* packet-goose.c */
/* asn2wrs.py -b -p goose -c ./goose.cnf -s ./packet-goose-template -D . -O ../.. goose.asn */
/* Input file: packet-goose-template.c */
#line 1 "./asn1/goose/packet-goose-template.c"
/* packet-goose.c
* Routines for IEC 61850 GOOSE packet dissection
* Martin Lutz 2008
*
* Routines for IEC 61850 R-GOOSE packet dissection
* Dordije Manojlovic 2020
*
* 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 <epan/etypes.h>
#include <epan/expert.h>
#include "packet-ber.h"
#include "packet-acse.h"
#define GOOSE_PNAME "GOOSE"
#define GOOSE_PSNAME "GOOSE"
#define GOOSE_PFNAME "goose"
#define R_GOOSE_PNAME "R-GOOSE"
#define R_GOOSE_PSNAME "R-GOOSE"
#define R_GOOSE_PFNAME "r-goose"
void proto_register_goose(void);
void proto_reg_handoff_goose(void);
/* Initialize the protocol and registered fields */
static int proto_goose = -1;
static int proto_r_goose = -1;
static int hf_goose_session_header = -1;
static int hf_goose_spdu_id = -1;
static int hf_goose_session_hdr_length = -1;
static int hf_goose_hdr_length = -1;
static int hf_goose_content_id = -1;
static int hf_goose_spdu_lenth = -1;
static int hf_goose_spdu_num = -1;
static int hf_goose_version = -1;
static int hf_goose_security_info = -1;
static int hf_goose_current_key_t = -1;
static int hf_goose_next_key_t = -1;
static int hf_goose_key_id = -1;
static int hf_goose_init_vec_length = -1;
static int hf_goose_init_vec = -1;
static int hf_goose_session_user_info = -1;
static int hf_goose_payload = -1;
static int hf_goose_payload_length = -1;
static int hf_goose_apdu_tag = -1;
static int hf_goose_apdu_simulation = -1;
static int hf_goose_apdu_appid = -1;
static int hf_goose_apdu_length = -1;
static int hf_goose_padding_tag = -1;
static int hf_goose_padding_length = -1;
static int hf_goose_padding = -1;
static int hf_goose_hmac = -1;
static int hf_goose_appid = -1;
static int hf_goose_length = -1;
static int hf_goose_reserve1 = -1;
static int hf_goose_reserve1_s_bit = -1;
static int hf_goose_reserve2 = -1;
static int hf_goose_float_value = -1;
/* Bit fields in the Reserved fields */
#define F_RESERVE1_S_BIT 0x8000
/* GOOSE stored data for expert info verifications */
typedef struct _goose_chk_data{
gboolean s_bit;
}goose_chk_data_t;
#define GOOSE_CHK_DATA_LEN (sizeof(goose_chk_data_t))
static expert_field ei_goose_mal_utctime = EI_INIT;
static expert_field ei_goose_zero_pdu = EI_INIT;
static expert_field ei_goose_invalid_sim = EI_INIT;
#define SINGLE_FLOAT_EXP_BITS 8
#define FLOAT_ENC_LENGTH 5
/*--- Included file: packet-goose-hf.c ---*/
#line 1 "./asn1/goose/packet-goose-hf.c"
static int hf_goose_gseMngtPdu = -1; /* GSEMngtPdu */
static int hf_goose_goosePdu = -1; /* IECGoosePdu */
static int hf_goose_stateID = -1; /* INTEGER */
static int hf_goose_requestResp = -1; /* RequestResponse */
static int hf_goose_requests = -1; /* GSEMngtRequests */
static int hf_goose_responses = -1; /* GSEMngtResponses */
static int hf_goose_getGoReference = -1; /* GetReferenceRequestPdu */
static int hf_goose_getGOOSEElementNumber = -1; /* GetElementRequestPdu */
static int hf_goose_getGsReference = -1; /* GetReferenceRequestPdu */
static int hf_goose_getGSSEDataOffset = -1; /* GetElementRequestPdu */
static int hf_goose_gseMngtNotSupported = -1; /* NULL */
static int hf_goose_gseMngtResponses_GetGOReference = -1; /* GSEMngtResponsePdu */
static int hf_goose_gseMngtResponses_GetGOOSEElementNumber = -1; /* GSEMngtResponsePdu */
static int hf_goose_gseMngtResponses_GetGSReference = -1; /* GSEMngtResponsePdu */
static int hf_goose_gseMngtResponses_GetGSSEDataOffset = -1; /* GSEMngtResponsePdu */
static int hf_goose_ident = -1; /* VisibleString */
static int hf_goose_getReferenceRequest_offset = -1; /* T_getReferenceRequest_offset */
static int hf_goose_getReferenceRequest_offset_item = -1; /* INTEGER */
static int hf_goose_references = -1; /* T_references */
static int hf_goose_references_item = -1; /* VisibleString */
static int hf_goose_confRev = -1; /* INTEGER */
static int hf_goose_posNeg = -1; /* PositiveNegative */
static int hf_goose_responsePositive = -1; /* T_responsePositive */
static int hf_goose_datSet = -1; /* VisibleString */
static int hf_goose_result = -1; /* SEQUENCE_OF_RequestResults */
static int hf_goose_result_item = -1; /* RequestResults */
static int hf_goose_responseNegative = -1; /* GlbErrors */
static int hf_goose_offset = -1; /* INTEGER */
static int hf_goose_reference = -1; /* IA5String */
static int hf_goose_error = -1; /* ErrorReason */
static int hf_goose_gocbRef = -1; /* VisibleString */
static int hf_goose_timeAllowedtoLive = -1; /* INTEGER */
static int hf_goose_goID = -1; /* VisibleString */
static int hf_goose_t = -1; /* UtcTime */
static int hf_goose_stNum = -1; /* INTEGER */
static int hf_goose_sqNum = -1; /* INTEGER */
static int hf_goose_simulation = -1; /* T_simulation */
static int hf_goose_ndsCom = -1; /* BOOLEAN */
static int hf_goose_numDatSetEntries = -1; /* INTEGER */
static int hf_goose_allData = -1; /* SEQUENCE_OF_Data */
static int hf_goose_allData_item = -1; /* Data */
static int hf_goose_array = -1; /* SEQUENCE_OF_Data */
static int hf_goose_array_item = -1; /* Data */
static int hf_goose_structure = -1; /* SEQUENCE_OF_Data */
static int hf_goose_structure_item = -1; /* Data */
static int hf_goose_boolean = -1; /* BOOLEAN */
static int hf_goose_bit_string = -1; /* BIT_STRING */
static int hf_goose_integer = -1; /* INTEGER */
static int hf_goose_unsigned = -1; /* INTEGER */
static int hf_goose_floating_point = -1; /* FloatingPoint */
static int hf_goose_real = -1; /* REAL */
static int hf_goose_octet_string = -1; /* OCTET_STRING */
static int hf_goose_visible_string = -1; /* VisibleString */
static int hf_goose_binary_time = -1; /* TimeOfDay */
static int hf_goose_bcd = -1; /* INTEGER */
static int hf_goose_booleanArray = -1; /* BIT_STRING */
static int hf_goose_objId = -1; /* OBJECT_IDENTIFIER */
static int hf_goose_mMSString = -1; /* MMSString */
static int hf_goose_utc_time = -1; /* UtcTime */
/*--- End of included file: packet-goose-hf.c ---*/
#line 90 "./asn1/goose/packet-goose-template.c"
/* Initialize the subtree pointers */
static int ett_r_goose = -1;
static int ett_session_header = -1;
static int ett_security_info = -1;
static int ett_session_user_info = -1;
static int ett_payload = -1;
static int ett_padding = -1;
static int ett_goose = -1;
static int ett_reserve1 = -1;
static int ett_expert_inf_sim = -1;
/*--- Included file: packet-goose-ett.c ---*/
#line 1 "./asn1/goose/packet-goose-ett.c"
static gint ett_goose_GOOSEpdu = -1;
static gint ett_goose_GSEMngtPdu = -1;
static gint ett_goose_RequestResponse = -1;
static gint ett_goose_GSEMngtRequests = -1;
static gint ett_goose_GSEMngtResponses = -1;
static gint ett_goose_GetReferenceRequestPdu = -1;
static gint ett_goose_T_getReferenceRequest_offset = -1;
static gint ett_goose_GetElementRequestPdu = -1;
static gint ett_goose_T_references = -1;
static gint ett_goose_GSEMngtResponsePdu = -1;
static gint ett_goose_PositiveNegative = -1;
static gint ett_goose_T_responsePositive = -1;
static gint ett_goose_SEQUENCE_OF_RequestResults = -1;
static gint ett_goose_RequestResults = -1;
static gint ett_goose_IECGoosePdu = -1;
static gint ett_goose_SEQUENCE_OF_Data = -1;
static gint ett_goose_Data = -1;
/*--- End of included file: packet-goose-ett.c ---*/
#line 103 "./asn1/goose/packet-goose-template.c"
/*--- Included file: packet-goose-fn.c ---*/
#line 1 "./asn1/goose/packet-goose-fn.c"
/*--- Cyclic dependencies ---*/
/* Data -> Data/array -> Data */
static int dissect_goose_Data(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_);
static int
dissect_goose_INTEGER(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int 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,
NULL);
return offset;
}
static int
dissect_goose_VisibleString(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_ber_restricted_string(implicit_tag, BER_UNI_TAG_VisibleString,
actx, tree, tvb, offset, hf_index,
NULL);
return offset;
}
static const ber_sequence_t T_getReferenceRequest_offset_sequence_of[1] = {
{ &hf_goose_getReferenceRequest_offset_item, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_goose_INTEGER },
};
static int
dissect_goose_T_getReferenceRequest_offset(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_ber_sequence_of(implicit_tag, actx, tree, tvb, offset,
T_getReferenceRequest_offset_sequence_of, hf_index, ett_goose_T_getReferenceRequest_offset);
return offset;
}
static const ber_sequence_t GetReferenceRequestPdu_sequence[] = {
{ &hf_goose_ident , BER_CLASS_CON, 0, BER_FLAGS_IMPLTAG, dissect_goose_VisibleString },
{ &hf_goose_getReferenceRequest_offset, BER_CLASS_CON, 1, BER_FLAGS_IMPLTAG, dissect_goose_T_getReferenceRequest_offset },
{ NULL, 0, 0, 0, NULL }
};
static int
dissect_goose_GetReferenceRequestPdu(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int 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,
GetReferenceRequestPdu_sequence, hf_index, ett_goose_GetReferenceRequestPdu);
return offset;
}
static const ber_sequence_t T_references_sequence_of[1] = {
{ &hf_goose_references_item, BER_CLASS_UNI, BER_UNI_TAG_VisibleString, BER_FLAGS_NOOWNTAG, dissect_goose_VisibleString },
};
static int
dissect_goose_T_references(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_ber_sequence_of(implicit_tag, actx, tree, tvb, offset,
T_references_sequence_of, hf_index, ett_goose_T_references);
return offset;
}
static const ber_sequence_t GetElementRequestPdu_sequence[] = {
{ &hf_goose_ident , BER_CLASS_CON, 0, BER_FLAGS_IMPLTAG, dissect_goose_VisibleString },
{ &hf_goose_references , BER_CLASS_CON, 1, BER_FLAGS_IMPLTAG, dissect_goose_T_references },
{ NULL, 0, 0, 0, NULL }
};
static int
dissect_goose_GetElementRequestPdu(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int 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,
GetElementRequestPdu_sequence, hf_index, ett_goose_GetElementRequestPdu);
return offset;
}
static const value_string goose_GSEMngtRequests_vals[] = {
{ 1, "getGoReference" },
{ 2, "getGOOSEElementNumber" },
{ 3, "getGsReference" },
{ 4, "getGSSEDataOffset" },
{ 0, NULL }
};
static const ber_choice_t GSEMngtRequests_choice[] = {
{ 1, &hf_goose_getGoReference, BER_CLASS_CON, 1, BER_FLAGS_IMPLTAG, dissect_goose_GetReferenceRequestPdu },
{ 2, &hf_goose_getGOOSEElementNumber, BER_CLASS_CON, 2, BER_FLAGS_IMPLTAG, dissect_goose_GetElementRequestPdu },
{ 3, &hf_goose_getGsReference, BER_CLASS_CON, 3, BER_FLAGS_IMPLTAG, dissect_goose_GetReferenceRequestPdu },
{ 4, &hf_goose_getGSSEDataOffset, BER_CLASS_CON, 4, BER_FLAGS_IMPLTAG, dissect_goose_GetElementRequestPdu },
{ 0, NULL, 0, 0, 0, NULL }
};
static int
dissect_goose_GSEMngtRequests(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_ber_choice(actx, tree, tvb, offset,
GSEMngtRequests_choice, hf_index, ett_goose_GSEMngtRequests,
NULL);
return offset;
}
static int
dissect_goose_NULL(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_ber_null(implicit_tag, actx, tree, tvb, offset, hf_index);
return offset;
}
static int
dissect_goose_IA5String(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_ber_restricted_string(implicit_tag, BER_UNI_TAG_IA5String,
actx, tree, tvb, offset, hf_index,
NULL);
return offset;
}
static const value_string goose_ErrorReason_vals[] = {
{ 0, "other" },
{ 1, "notFound" },
{ 0, NULL }
};
static int
dissect_goose_ErrorReason(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int 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,
NULL);
return offset;
}
static const value_string goose_RequestResults_vals[] = {
{ 0, "offset" },
{ 1, "reference" },
{ 2, "error" },
{ 0, NULL }
};
static const ber_choice_t RequestResults_choice[] = {
{ 0, &hf_goose_offset , BER_CLASS_CON, 0, BER_FLAGS_IMPLTAG, dissect_goose_INTEGER },
{ 1, &hf_goose_reference , BER_CLASS_CON, 1, BER_FLAGS_IMPLTAG, dissect_goose_IA5String },
{ 2, &hf_goose_error , BER_CLASS_CON, 2, BER_FLAGS_IMPLTAG, dissect_goose_ErrorReason },
{ 0, NULL, 0, 0, 0, NULL }
};
static int
dissect_goose_RequestResults(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_ber_choice(actx, tree, tvb, offset,
RequestResults_choice, hf_index, ett_goose_RequestResults,
NULL);
return offset;
}
static const ber_sequence_t SEQUENCE_OF_RequestResults_sequence_of[1] = {
{ &hf_goose_result_item , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_goose_RequestResults },
};
static int
dissect_goose_SEQUENCE_OF_RequestResults(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_ber_sequence_of(implicit_tag, actx, tree, tvb, offset,
SEQUENCE_OF_RequestResults_sequence_of, hf_index, ett_goose_SEQUENCE_OF_RequestResults);
return offset;
}
static const ber_sequence_t T_responsePositive_sequence[] = {
{ &hf_goose_datSet , BER_CLASS_CON, 0, BER_FLAGS_OPTIONAL|BER_FLAGS_IMPLTAG, dissect_goose_VisibleString },
{ &hf_goose_result , BER_CLASS_CON, 1, BER_FLAGS_IMPLTAG, dissect_goose_SEQUENCE_OF_RequestResults },
{ NULL, 0, 0, 0, NULL }
};
static int
dissect_goose_T_responsePositive(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int 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,
T_responsePositive_sequence, hf_index, ett_goose_T_responsePositive);
return offset;
}
static const value_string goose_GlbErrors_vals[] = {
{ 0, "other" },
{ 1, "unknownControlBlock" },
{ 2, "responseTooLarge" },
{ 3, "controlBlockConfigurationError" },
{ 0, NULL }
};
static int
dissect_goose_GlbErrors(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int 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,
NULL);
return offset;
}
static const value_string goose_PositiveNegative_vals[] = {
{ 2, "responsePositive" },
{ 3, "responseNegative" },
{ 0, NULL }
};
static const ber_choice_t PositiveNegative_choice[] = {
{ 2, &hf_goose_responsePositive, BER_CLASS_CON, 2, BER_FLAGS_IMPLTAG, dissect_goose_T_responsePositive },
{ 3, &hf_goose_responseNegative, BER_CLASS_CON, 3, BER_FLAGS_IMPLTAG, dissect_goose_GlbErrors },
{ 0, NULL, 0, 0, 0, NULL }
};
static int
dissect_goose_PositiveNegative(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_ber_choice(actx, tree, tvb, offset,
PositiveNegative_choice, hf_index, ett_goose_PositiveNegative,
NULL);
return offset;
}
static const ber_sequence_t GSEMngtResponsePdu_sequence[] = {
{ &hf_goose_ident , BER_CLASS_CON, 0, BER_FLAGS_IMPLTAG, dissect_goose_VisibleString },
{ &hf_goose_confRev , BER_CLASS_CON, 1, BER_FLAGS_OPTIONAL|BER_FLAGS_IMPLTAG, dissect_goose_INTEGER },
{ &hf_goose_posNeg , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_goose_PositiveNegative },
{ NULL, 0, 0, 0, NULL }
};
static int
dissect_goose_GSEMngtResponsePdu(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int 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,
GSEMngtResponsePdu_sequence, hf_index, ett_goose_GSEMngtResponsePdu);
return offset;
}
static const value_string goose_GSEMngtResponses_vals[] = {
{ 0, "gseMngtNotSupported" },
{ 1, "getGoReference" },
{ 2, "getGOOSEElementNumber" },
{ 3, "getGsReference" },
{ 4, "getGSSEDataOffset" },
{ 0, NULL }
};
static const ber_choice_t GSEMngtResponses_choice[] = {
{ 0, &hf_goose_gseMngtNotSupported, BER_CLASS_CON, 0, BER_FLAGS_IMPLTAG, dissect_goose_NULL },
{ 1, &hf_goose_gseMngtResponses_GetGOReference, BER_CLASS_CON, 1, BER_FLAGS_IMPLTAG, dissect_goose_GSEMngtResponsePdu },
{ 2, &hf_goose_gseMngtResponses_GetGOOSEElementNumber, BER_CLASS_CON, 2, BER_FLAGS_IMPLTAG, dissect_goose_GSEMngtResponsePdu },
{ 3, &hf_goose_gseMngtResponses_GetGSReference, BER_CLASS_CON, 3, BER_FLAGS_IMPLTAG, dissect_goose_GSEMngtResponsePdu },
{ 4, &hf_goose_gseMngtResponses_GetGSSEDataOffset, BER_CLASS_CON, 4, BER_FLAGS_IMPLTAG, dissect_goose_GSEMngtResponsePdu },
{ 0, NULL, 0, 0, 0, NULL }
};
static int
dissect_goose_GSEMngtResponses(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_ber_choice(actx, tree, tvb, offset,
GSEMngtResponses_choice, hf_index, ett_goose_GSEMngtResponses,
NULL);
return offset;
}
static const value_string goose_RequestResponse_vals[] = {
{ 1, "requests" },
{ 2, "responses" },
{ 0, NULL }
};
static const ber_choice_t RequestResponse_choice[] = {
{ 1, &hf_goose_requests , BER_CLASS_CON, 1, BER_FLAGS_IMPLTAG, dissect_goose_GSEMngtRequests },
{ 2, &hf_goose_responses , BER_CLASS_CON, 2, BER_FLAGS_IMPLTAG, dissect_goose_GSEMngtResponses },
{ 0, NULL, 0, 0, 0, NULL }
};
static int
dissect_goose_RequestResponse(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_ber_choice(actx, tree, tvb, offset,
RequestResponse_choice, hf_index, ett_goose_RequestResponse,
NULL);
return offset;
}
static const ber_sequence_t GSEMngtPdu_sequence[] = {
{ &hf_goose_stateID , BER_CLASS_CON, 0, BER_FLAGS_IMPLTAG, dissect_goose_INTEGER },
{ &hf_goose_requestResp , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_goose_RequestResponse },
{ NULL, 0, 0, 0, NULL }
};
static int
dissect_goose_GSEMngtPdu(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int 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,
GSEMngtPdu_sequence, hf_index, ett_goose_GSEMngtPdu);
return offset;
}
static int
dissect_goose_UtcTime(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
#line 31 "./asn1/goose/goose.cnf"
guint32 len;
guint32 seconds;
guint32 fraction;
guint32 nanoseconds;
nstime_t ts;
gchar * ptime;
len = tvb_reported_length_remaining(tvb, offset);
if(len != 8)
{
proto_tree_add_expert(tree, actx->pinfo, &ei_goose_mal_utctime, tvb, offset, len);
if(hf_index >= 0)
{
proto_tree_add_string(tree, hf_index, tvb, offset, len, "????");
}
return offset;
}
seconds = tvb_get_ntohl(tvb, offset);
fraction = tvb_get_ntoh24(tvb, offset+4) * 0x100; /* Only 3 bytes are recommended */
nanoseconds = (guint32)( ((guint64)fraction * G_GUINT64_CONSTANT(1000000000)) / G_GUINT64_CONSTANT(0x100000000) ) ;
ts.secs = seconds;
ts.nsecs = nanoseconds;
ptime = abs_time_to_str(actx->pinfo->pool, &ts, ABSOLUTE_TIME_UTC, TRUE);
if(hf_index >= 0)
{
proto_tree_add_string(tree, hf_index, tvb, offset, len, ptime);
}
return offset;
}
static int
dissect_goose_T_simulation(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
#line 14 "./asn1/goose/goose.cnf"
gboolean value;
guint32 len = tvb_reported_length_remaining(tvb, offset);
int origin_offset = offset;
offset = dissect_ber_boolean(implicit_tag, actx, tree, tvb, offset, hf_index, &value);
if((actx->private_data) && (actx->created_item)){
goose_chk_data_t *data_chk = (goose_chk_data_t *)actx->private_data;
proto_tree *expert_inf_tree = NULL;
/* S bit set and Simulation attribute clear: reject as invalid GOOSE */
if((data_chk->s_bit == TRUE) && (value == FALSE)){
/* It really looks better showed as a new subtree */
expert_inf_tree = proto_item_add_subtree(actx->created_item, ett_expert_inf_sim);
proto_tree_add_expert(expert_inf_tree, actx->pinfo, &ei_goose_invalid_sim, tvb, origin_offset, len);
}
}
return offset;
}
static int
dissect_goose_BOOLEAN(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_ber_boolean(implicit_tag, actx, tree, tvb, offset, hf_index, NULL);
return offset;
}
static const ber_sequence_t SEQUENCE_OF_Data_sequence_of[1] = {
{ &hf_goose_allData_item , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_goose_Data },
};
static int
dissect_goose_SEQUENCE_OF_Data(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_ber_sequence_of(implicit_tag, actx, tree, tvb, offset,
SEQUENCE_OF_Data_sequence_of, hf_index, ett_goose_SEQUENCE_OF_Data);
return offset;
}
static int
dissect_goose_BIT_STRING(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_ber_bitstring(implicit_tag, actx, tree, tvb, offset,
NULL, 0, hf_index, -1,
NULL);
return offset;
}
static int
dissect_goose_FloatingPoint(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
#line 68 "./asn1/goose/goose.cnf"
int len = tvb_reported_length_remaining(tvb, offset);
offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
NULL);
if ((len == FLOAT_ENC_LENGTH) && (tvb_get_guint8(tvb,0) == SINGLE_FLOAT_EXP_BITS) ){
/* IEEE 754 single precision floating point */
proto_item_set_hidden(actx->created_item);
proto_tree_add_item(tree, hf_goose_float_value, tvb, 1, (FLOAT_ENC_LENGTH-1), ENC_BIG_ENDIAN);
}
return offset;
}
static int
dissect_goose_REAL(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_ber_real(implicit_tag, actx, tree, tvb, offset, hf_index,
NULL);
return offset;
}
static int
dissect_goose_OCTET_STRING(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
NULL);
return offset;
}
static int
dissect_goose_TimeOfDay(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
NULL);
return offset;
}
static int
dissect_goose_OBJECT_IDENTIFIER(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int 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 int
dissect_goose_MMSString(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_ber_restricted_string(implicit_tag, BER_UNI_TAG_UTF8String,
actx, tree, tvb, offset, hf_index,
NULL);
return offset;
}
static const value_string goose_Data_vals[] = {
{ 1, "array" },
{ 2, "structure" },
{ 3, "boolean" },
{ 4, "bit-string" },
{ 5, "integer" },
{ 6, "unsigned" },
{ 7, "floating-point" },
{ 8, "real" },
{ 9, "octet-string" },
{ 10, "visible-string" },
{ 12, "binary-time" },
{ 13, "bcd" },
{ 14, "booleanArray" },
{ 15, "objId" },
{ 16, "mMSString" },
{ 17, "utc-time" },
{ 0, NULL }
};
static const ber_choice_t Data_choice[] = {
{ 1, &hf_goose_array , BER_CLASS_CON, 1, BER_FLAGS_IMPLTAG, dissect_goose_SEQUENCE_OF_Data },
{ 2, &hf_goose_structure , BER_CLASS_CON, 2, BER_FLAGS_IMPLTAG, dissect_goose_SEQUENCE_OF_Data },
{ 3, &hf_goose_boolean , BER_CLASS_CON, 3, BER_FLAGS_IMPLTAG, dissect_goose_BOOLEAN },
{ 4, &hf_goose_bit_string , BER_CLASS_CON, 4, BER_FLAGS_IMPLTAG, dissect_goose_BIT_STRING },
{ 5, &hf_goose_integer , BER_CLASS_CON, 5, BER_FLAGS_IMPLTAG, dissect_goose_INTEGER },
{ 6, &hf_goose_unsigned , BER_CLASS_CON, 6, BER_FLAGS_IMPLTAG, dissect_goose_INTEGER },
{ 7, &hf_goose_floating_point, BER_CLASS_CON, 7, BER_FLAGS_IMPLTAG, dissect_goose_FloatingPoint },
{ 8, &hf_goose_real , BER_CLASS_CON, 8, BER_FLAGS_IMPLTAG, dissect_goose_REAL },
{ 9, &hf_goose_octet_string , BER_CLASS_CON, 9, BER_FLAGS_IMPLTAG, dissect_goose_OCTET_STRING },
{ 10, &hf_goose_visible_string, BER_CLASS_CON, 10, BER_FLAGS_IMPLTAG, dissect_goose_VisibleString },
{ 12, &hf_goose_binary_time , BER_CLASS_CON, 12, BER_FLAGS_IMPLTAG, dissect_goose_TimeOfDay },
{ 13, &hf_goose_bcd , BER_CLASS_CON, 13, BER_FLAGS_IMPLTAG, dissect_goose_INTEGER },
{ 14, &hf_goose_booleanArray , BER_CLASS_CON, 14, BER_FLAGS_IMPLTAG, dissect_goose_BIT_STRING },
{ 15, &hf_goose_objId , BER_CLASS_CON, 15, BER_FLAGS_IMPLTAG, dissect_goose_OBJECT_IDENTIFIER },
{ 16, &hf_goose_mMSString , BER_CLASS_CON, 16, BER_FLAGS_IMPLTAG, dissect_goose_MMSString },
{ 17, &hf_goose_utc_time , BER_CLASS_CON, 17, BER_FLAGS_IMPLTAG, dissect_goose_UtcTime },
{ 0, NULL, 0, 0, 0, NULL }
};
static int
dissect_goose_Data(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_ber_choice(actx, tree, tvb, offset,
Data_choice, hf_index, ett_goose_Data,
NULL);
return offset;
}
static const ber_sequence_t IECGoosePdu_sequence[] = {
{ &hf_goose_gocbRef , BER_CLASS_CON, 0, BER_FLAGS_IMPLTAG, dissect_goose_VisibleString },
{ &hf_goose_timeAllowedtoLive, BER_CLASS_CON, 1, BER_FLAGS_IMPLTAG, dissect_goose_INTEGER },
{ &hf_goose_datSet , BER_CLASS_CON, 2, BER_FLAGS_IMPLTAG, dissect_goose_VisibleString },
{ &hf_goose_goID , BER_CLASS_CON, 3, BER_FLAGS_OPTIONAL|BER_FLAGS_IMPLTAG, dissect_goose_VisibleString },
{ &hf_goose_t , BER_CLASS_CON, 4, BER_FLAGS_IMPLTAG, dissect_goose_UtcTime },
{ &hf_goose_stNum , BER_CLASS_CON, 5, BER_FLAGS_IMPLTAG, dissect_goose_INTEGER },
{ &hf_goose_sqNum , BER_CLASS_CON, 6, BER_FLAGS_IMPLTAG, dissect_goose_INTEGER },
{ &hf_goose_simulation , BER_CLASS_CON, 7, BER_FLAGS_OPTIONAL|BER_FLAGS_IMPLTAG, dissect_goose_T_simulation },
{ &hf_goose_confRev , BER_CLASS_CON, 8, BER_FLAGS_IMPLTAG, dissect_goose_INTEGER },
{ &hf_goose_ndsCom , BER_CLASS_CON, 9, BER_FLAGS_OPTIONAL|BER_FLAGS_IMPLTAG, dissect_goose_BOOLEAN },
{ &hf_goose_numDatSetEntries, BER_CLASS_CON, 10, BER_FLAGS_IMPLTAG, dissect_goose_INTEGER },
{ &hf_goose_allData , BER_CLASS_CON, 11, BER_FLAGS_IMPLTAG, dissect_goose_SEQUENCE_OF_Data },
{ NULL, 0, 0, 0, NULL }
};
static int
dissect_goose_IECGoosePdu(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int 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,
IECGoosePdu_sequence, hf_index, ett_goose_IECGoosePdu);
return offset;
}
static const ber_choice_t GOOSEpdu_choice[] = {
{ 0, &hf_goose_gseMngtPdu , BER_CLASS_APP, 0, BER_FLAGS_IMPLTAG, dissect_goose_GSEMngtPdu },
{ 1, &hf_goose_goosePdu , BER_CLASS_APP, 1, BER_FLAGS_IMPLTAG, dissect_goose_IECGoosePdu },
{ 0, NULL, 0, 0, 0, NULL }
};
static int
dissect_goose_GOOSEpdu(gboolean implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_ber_choice(actx, tree, tvb, offset,
GOOSEpdu_choice, hf_index, ett_goose_GOOSEpdu,
NULL);
return offset;
}
/*--- End of included file: packet-goose-fn.c ---*/
#line 105 "./asn1/goose/packet-goose-template.c"
static dissector_handle_t goose_handle = NULL;
static dissector_handle_t ositp_handle = NULL;
#define OSI_SPDU_TUNNELED 0xA0 /* Tunneled */
#define OSI_SPDU_GOOSE 0xA1 /* GOOSE */
#define OSI_SPDU_SV 0xA2 /* Sample Value */
#define OSI_SPDU_MNGT 0xA3 /* Management */
static const value_string ositp_spdu_id[] = {
{ OSI_SPDU_TUNNELED, "Tunneled" },
{ OSI_SPDU_GOOSE, "GOOSE" },
{ OSI_SPDU_SV, "Sample value" },
{ OSI_SPDU_MNGT, "Management" },
{ 0, NULL }
};
#define OSI_PDU_GOOSE 0x81
#define OSI_PDU_SV 0x82
#define OSI_PDU_TUNNELED 0x83
#define OSI_PDU_MNGT 0x84
static const value_string ositp_pdu_id[] = {
{ OSI_PDU_GOOSE, "GOOSE" },
{ OSI_PDU_SV, "SV" },
{ OSI_PDU_TUNNELED, "Tunnel" },
{ OSI_PDU_MNGT, "MNGT" },
{ 0, NULL }
};
#define APDU_HEADER_SIZE 6
/*
* Dissect GOOSE PDUs inside a PPDU.
*/
static int
dissect_goose(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree,
void* data _U_)
{
guint32 offset = 0;
guint32 old_offset;
guint32 length;
guint32 reserve1_val;
proto_item *item = NULL;
proto_tree *tree = NULL;
goose_chk_data_t *data_chk = NULL;
asn1_ctx_t asn1_ctx;
asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo);
static int * const reserve1_flags[] = {
&hf_goose_reserve1_s_bit,
NULL
};
asn1_ctx.private_data = wmem_alloc(pinfo->pool, GOOSE_CHK_DATA_LEN);
data_chk = (goose_chk_data_t *)asn1_ctx.private_data;
col_set_str(pinfo->cinfo, COL_PROTOCOL, GOOSE_PNAME);
col_clear(pinfo->cinfo, COL_INFO);
item = proto_tree_add_item(parent_tree, proto_goose, tvb, 0, -1, ENC_NA);
tree = proto_item_add_subtree(item, ett_goose);
add_ber_encoded_label(tvb, pinfo, parent_tree);
/* APPID */
proto_tree_add_item(tree, hf_goose_appid, tvb, offset, 2, ENC_BIG_ENDIAN);
/* Length */
proto_tree_add_item_ret_uint(tree, hf_goose_length, tvb, offset + 2, 2,
ENC_BIG_ENDIAN, &length);
/* Reserved 1 */
reserve1_val = tvb_get_guint16(tvb, offset + 4, ENC_BIG_ENDIAN);
proto_tree_add_bitmask_value(tree, tvb, offset + 4, hf_goose_reserve1, ett_reserve1,
reserve1_flags, reserve1_val);
/* Store the header sim value for later expert info checks */
if(data_chk){
if(reserve1_val & F_RESERVE1_S_BIT){
data_chk->s_bit = TRUE;
}else{
data_chk->s_bit = FALSE;
}
}
/* Reserved 2 */
proto_tree_add_item(tree, hf_goose_reserve2, tvb, offset + 6, 2,
ENC_BIG_ENDIAN);
offset = 8;
while (offset < length){
old_offset = offset;
offset = dissect_goose_GOOSEpdu(FALSE, tvb, offset, &asn1_ctx , tree, -1);
if (offset == old_offset) {
proto_tree_add_expert(tree, pinfo, &ei_goose_zero_pdu, tvb, offset, -1);
break;
}
}
return tvb_captured_length(tvb);
}
/*
* Dissect RGOOSE PDUs inside ISO 8602/X.234 CLTP ConnecteionLess
* Transport Protocol.
*/
static int
dissect_rgoose(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree,
void* data _U_)
{
guint offset = 0, old_offset = 0;
guint32 init_v_length, payload_tag, padding_length, length;
guint32 payload_length, apdu_offset = 0, apdu_length, apdu_simulation;
proto_item *item = NULL;
proto_tree *tree = NULL, *r_goose_tree = NULL, *sess_user_info_tree = NULL;
goose_chk_data_t *data_chk = NULL;
asn1_ctx_t asn1_ctx;
asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo);
asn1_ctx.private_data = wmem_alloc(pinfo->pool, GOOSE_CHK_DATA_LEN);
data_chk = (goose_chk_data_t *)asn1_ctx.private_data;
col_set_str(pinfo->cinfo, COL_PROTOCOL, R_GOOSE_PNAME);
col_clear(pinfo->cinfo, COL_INFO);
item = proto_tree_add_item(parent_tree, proto_r_goose, tvb, 0, -1, ENC_NA);
r_goose_tree = proto_item_add_subtree(item, ett_r_goose);
/* Session header subtree */
item = proto_tree_add_item(r_goose_tree, hf_goose_session_header, tvb, 0,
-1, ENC_NA);
tree = proto_item_add_subtree(item, ett_session_header);
/* SPDU ID */
proto_tree_add_item(tree, hf_goose_spdu_id, tvb, offset++, 1,
ENC_BIG_ENDIAN);
/* Session header length */
proto_tree_add_item_ret_uint(tree, hf_goose_session_hdr_length, tvb, offset++, 1,
ENC_BIG_ENDIAN, &length);
proto_item_set_len(item, length + 2);
/* Header content indicator */
proto_tree_add_item(tree, hf_goose_content_id, tvb, offset++, 1,
ENC_BIG_ENDIAN);
/* Length */
proto_tree_add_item(tree, hf_goose_hdr_length, tvb, offset++, 1,
ENC_BIG_ENDIAN);
/* SPDU length */
proto_tree_add_item(tree, hf_goose_spdu_lenth, tvb, offset, 4,
ENC_BIG_ENDIAN);
offset += 4;
/* SPDU number */
proto_tree_add_item(tree, hf_goose_spdu_num, tvb, offset, 4,
ENC_BIG_ENDIAN);
offset += 4;
/* Version */
proto_tree_add_item(tree, hf_goose_version, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
/* Security information subtree */
item = proto_tree_add_item(tree, hf_goose_security_info, tvb, offset, -1,
ENC_NA);
tree = proto_item_add_subtree(item, ett_security_info);
/* Time of current key */
proto_tree_add_item(tree, hf_goose_current_key_t, tvb, offset, 4,
ENC_BIG_ENDIAN);
offset += 4;
/* Time of next key */
proto_tree_add_item(tree, hf_goose_next_key_t, tvb, offset, 2,
ENC_BIG_ENDIAN);
offset += 2;
/* Key ID */
proto_tree_add_item(tree, hf_goose_key_id, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
/* Initialization vector length */
proto_tree_add_item_ret_uint(tree, hf_goose_init_vec_length, tvb, offset++, 1,
ENC_BIG_ENDIAN, &init_v_length);
proto_item_set_len(item, init_v_length + 11);
if (init_v_length > 0) {
/* Initialization vector bytes */
proto_tree_add_item(tree, hf_goose_init_vec, tvb, offset, init_v_length,
ENC_NA);
}
offset += init_v_length;
/* Session user information subtree */
item = proto_tree_add_item(r_goose_tree, hf_goose_session_user_info, tvb,
offset, -1, ENC_NA);
sess_user_info_tree = proto_item_add_subtree(item, ett_payload);
/* Payload subtree */
item = proto_tree_add_item(sess_user_info_tree, hf_goose_payload, tvb,
offset, -1, ENC_NA);
tree = proto_item_add_subtree(item, ett_payload);
/* Payload length */
proto_tree_add_item_ret_uint(tree, hf_goose_payload_length, tvb, offset, 4,
ENC_BIG_ENDIAN, &payload_length);
offset += 4;
while (apdu_offset < payload_length){
/* APDU tag */
proto_tree_add_item_ret_uint(tree, hf_goose_apdu_tag, tvb, offset++, 1,
ENC_BIG_ENDIAN, &payload_tag);
/* Simulation flag */
proto_tree_add_item_ret_uint(tree, hf_goose_apdu_simulation, tvb, offset++,
1, ENC_BIG_ENDIAN, &apdu_simulation);
/* APPID */
proto_tree_add_item(tree, hf_goose_apdu_appid, tvb, offset, 2,
ENC_BIG_ENDIAN);
offset += 2;
if (payload_tag != OSI_PDU_GOOSE) {
return tvb_captured_length(tvb);
}
/* Store the header sim value for later expert info checks */
if(data_chk){
if(apdu_simulation){
data_chk->s_bit = TRUE;
}else{
data_chk->s_bit = FALSE;
}
}
/* APDU length */
proto_tree_add_item_ret_uint(tree, hf_goose_apdu_length, tvb, offset, 2,
ENC_BIG_ENDIAN, &apdu_length);
apdu_offset += (APDU_HEADER_SIZE + apdu_length);
offset += 2;
old_offset = offset;
offset = dissect_goose_GOOSEpdu(FALSE, tvb, offset, &asn1_ctx , tree, -1);
if (offset == old_offset) {
proto_tree_add_expert(tree, pinfo, &ei_goose_zero_pdu, tvb, offset, -1);
break;
}
}
/* Check do we have padding bytes */
if ((tvb_captured_length(tvb) > offset) &&
(tvb_get_guint8(tvb, offset) == 0xAF)) {
/* Padding subtree */
item = proto_tree_add_item(sess_user_info_tree, hf_goose_padding, tvb,
offset, -1, ENC_NA);
tree = proto_item_add_subtree(item, ett_padding);
/* Padding tag */
proto_tree_add_item(tree, hf_goose_padding_tag, tvb, offset++, 1,
ENC_NA);
/* Padding length */
proto_tree_add_item_ret_uint(tree, hf_goose_padding_length, tvb, offset++, 1,
ENC_BIG_ENDIAN, &padding_length);
proto_item_set_len(item, padding_length + 1);
/* Padding bytes */
proto_tree_add_item(tree, hf_goose_padding, tvb, offset, padding_length,
ENC_NA);
offset += padding_length;
}
/* Check do we have HMAC bytes */
if (tvb_captured_length(tvb) > offset) {
/* HMAC bytes */
proto_tree_add_item(sess_user_info_tree, hf_goose_hmac, tvb, offset,
tvb_captured_length(tvb) - offset, ENC_NA);
}
return tvb_captured_length(tvb);
}
static gboolean
dissect_rgoose_heur(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree,
void *data)
{
guint8 spdu;
/* Check do we have at least min size of Session header bytes */
if (tvb_captured_length(tvb) < 27) {
return FALSE;
}
/* Is it R-GOOSE? */
spdu = tvb_get_guint8(tvb, 0);
if (spdu != OSI_SPDU_GOOSE) {
return FALSE;
}
dissect_rgoose(tvb, pinfo, parent_tree, data);
return TRUE;
}
static gboolean
dissect_cltp_heur(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree,
void *data _U_)
{
guint8 li, tpdu, spdu;
/* First, check do we have at least 2 bytes (length + tpdu) */
if (tvb_captured_length(tvb) < 2) {
return FALSE;
}
li = tvb_get_guint8(tvb, 0);
/* Is it OSI on top of the UDP? */
tpdu = (tvb_get_guint8(tvb, 1) & 0xF0) >> 4;
if (tpdu != 0x4) {
return FALSE;
}
/* Check do we have SPDU ID byte, too */
if (tvb_captured_length(tvb) < (guint) (li + 2)) {
return FALSE;
}
/* And let's see if it is GOOSE SPDU */
spdu = tvb_get_guint8(tvb, li + 1);
if (spdu != OSI_SPDU_GOOSE) {
return FALSE;
}
call_dissector(ositp_handle, tvb, pinfo, parent_tree);
return TRUE;
}
/*--- proto_register_goose -------------------------------------------*/
void proto_register_goose(void) {
/* List of fields */
static hf_register_info hf[] =
{
{ &hf_goose_session_header,
{ "Session header", "rgoose.session_hdr",
FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_spdu_id,
{ "Session identifier", "rgoose.spdu_id",
FT_UINT8, BASE_HEX_DEC, VALS(ositp_spdu_id), 0x0, NULL, HFILL }},
{ &hf_goose_session_hdr_length,
{ "Session header length", "rgoose.session_hdr_len",
FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_content_id,
{ "Common session header identifier", "rgoose.common_session_id",
FT_UINT8, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_hdr_length,
{ "Header length", "rgoose.hdr_len",
FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_spdu_lenth,
{ "SPDU length", "rgoose.spdu_len",
FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_spdu_num,
{ "SPDU number", "rgoose.spdu_num",
FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_version,
{ "Version", "rgoose.version",
FT_UINT16, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_security_info,
{ "Security information", "rgoose.sec_info",
FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_current_key_t,
{ "Time of current key", "rgoose.curr_key_t",
FT_UINT32, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_next_key_t,
{ "Time of next key", "rgoose.next_key_t",
FT_UINT16, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_key_id,
{ "Key ID", "rgoose.key_id",
FT_UINT32, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_init_vec_length,
{ "Initialization vector length", "rgoose.init_v_len",
FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_init_vec,
{ "Initialization vector", "rgoose.init_v",
FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_session_user_info,
{ "Session user information", "rgoose.session_user_info",
FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_payload,
{ "Payload", "rgoose.payload",
FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_payload_length,
{ "Payload length", "rgoose.payload_len",
FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_apdu_tag,
{ "Payload type tag", "rgoose.pdu_tag",
FT_UINT8, BASE_HEX_DEC, VALS(ositp_pdu_id), 0x0, NULL, HFILL }},
{ &hf_goose_apdu_simulation,
{ "Simulation flag", "rgoose.simulation",
FT_UINT8, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_apdu_appid,
{ "APPID", "rgoose.appid",
FT_UINT16, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_apdu_length,
{ "APDU length", "rgoose.apdu_len",
FT_UINT16, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_padding_tag,
{ "Padding", "rgoose.padding_tag",
FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_padding_length,
{ "Padding length", "rgoose.padding_len",
FT_UINT8, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_padding,
{ "Padding", "rgoose.padding",
FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_hmac,
{ "HMAC", "rgoose.hmac",
FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_appid,
{ "APPID", "goose.appid",
FT_UINT16, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_length,
{ "Length", "goose.length",
FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_reserve1,
{ "Reserved 1", "goose.reserve1",
FT_UINT16, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_reserve1_s_bit,
{ "Simulated", "goose.reserve1.s_bit",
FT_BOOLEAN, 16, NULL, F_RESERVE1_S_BIT, NULL, HFILL } },
{ &hf_goose_reserve2,
{ "Reserved 2", "goose.reserve2",
FT_UINT16, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_goose_float_value,
{ "float value", "goose.float_value",
FT_FLOAT, BASE_NONE, NULL, 0x0, NULL, HFILL }},
/*--- Included file: packet-goose-hfarr.c ---*/
#line 1 "./asn1/goose/packet-goose-hfarr.c"
{ &hf_goose_gseMngtPdu,
{ "gseMngtPdu", "goose.gseMngtPdu_element",
FT_NONE, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_goose_goosePdu,
{ "goosePdu", "goose.goosePdu_element",
FT_NONE, BASE_NONE, NULL, 0,
"IECGoosePdu", HFILL }},
{ &hf_goose_stateID,
{ "stateID", "goose.stateID",
FT_INT32, BASE_DEC, NULL, 0,
"INTEGER", HFILL }},
{ &hf_goose_requestResp,
{ "requestResp", "goose.requestResp",
FT_UINT32, BASE_DEC, VALS(goose_RequestResponse_vals), 0,
"RequestResponse", HFILL }},
{ &hf_goose_requests,
{ "requests", "goose.requests",
FT_UINT32, BASE_DEC, VALS(goose_GSEMngtRequests_vals), 0,
"GSEMngtRequests", HFILL }},
{ &hf_goose_responses,
{ "responses", "goose.responses",
FT_UINT32, BASE_DEC, VALS(goose_GSEMngtResponses_vals), 0,
"GSEMngtResponses", HFILL }},
{ &hf_goose_getGoReference,
{ "getGoReference", "goose.getGoReference_element",
FT_NONE, BASE_NONE, NULL, 0,
"GetReferenceRequestPdu", HFILL }},
{ &hf_goose_getGOOSEElementNumber,
{ "getGOOSEElementNumber", "goose.getGOOSEElementNumber_element",
FT_NONE, BASE_NONE, NULL, 0,
"GetElementRequestPdu", HFILL }},
{ &hf_goose_getGsReference,
{ "getGsReference", "goose.getGsReference_element",
FT_NONE, BASE_NONE, NULL, 0,
"GetReferenceRequestPdu", HFILL }},
{ &hf_goose_getGSSEDataOffset,
{ "getGSSEDataOffset", "goose.getGSSEDataOffset_element",
FT_NONE, BASE_NONE, NULL, 0,
"GetElementRequestPdu", HFILL }},
{ &hf_goose_gseMngtNotSupported,
{ "gseMngtNotSupported", "goose.gseMngtNotSupported_element",
FT_NONE, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_goose_gseMngtResponses_GetGOReference,
{ "getGoReference", "goose.getGoReference_element",
FT_NONE, BASE_NONE, NULL, 0,
"GSEMngtResponsePdu", HFILL }},
{ &hf_goose_gseMngtResponses_GetGOOSEElementNumber,
{ "getGOOSEElementNumber", "goose.getGOOSEElementNumber_element",
FT_NONE, BASE_NONE, NULL, 0,
"GSEMngtResponsePdu", HFILL }},
{ &hf_goose_gseMngtResponses_GetGSReference,
{ "getGsReference", "goose.getGsReference_element",
FT_NONE, BASE_NONE, NULL, 0,
"GSEMngtResponsePdu", HFILL }},
{ &hf_goose_gseMngtResponses_GetGSSEDataOffset,
{ "getGSSEDataOffset", "goose.getGSSEDataOffset_element",
FT_NONE, BASE_NONE, NULL, 0,
"GSEMngtResponsePdu", HFILL }},
{ &hf_goose_ident,
{ "ident", "goose.ident",
FT_STRING, BASE_NONE, NULL, 0,
"VisibleString", HFILL }},
{ &hf_goose_getReferenceRequest_offset,
{ "offset", "goose.getReferenceRequest.offset",
FT_UINT32, BASE_DEC, NULL, 0,
"T_getReferenceRequest_offset", HFILL }},
{ &hf_goose_getReferenceRequest_offset_item,
{ "offset item", "goose.offset_item",
FT_INT32, BASE_DEC, NULL, 0,
"INTEGER", HFILL }},
{ &hf_goose_references,
{ "references", "goose.references",
FT_UINT32, BASE_DEC, NULL, 0,
NULL, HFILL }},
{ &hf_goose_references_item,
{ "references item", "goose.references_item",
FT_STRING, BASE_NONE, NULL, 0,
"VisibleString", HFILL }},
{ &hf_goose_confRev,
{ "confRev", "goose.confRev",
FT_INT32, BASE_DEC, NULL, 0,
"INTEGER", HFILL }},
{ &hf_goose_posNeg,
{ "posNeg", "goose.posNeg",
FT_UINT32, BASE_DEC, VALS(goose_PositiveNegative_vals), 0,
"PositiveNegative", HFILL }},
{ &hf_goose_responsePositive,
{ "responsePositive", "goose.responsePositive_element",
FT_NONE, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_goose_datSet,
{ "datSet", "goose.datSet",
FT_STRING, BASE_NONE, NULL, 0,
"VisibleString", HFILL }},
{ &hf_goose_result,
{ "result", "goose.result",
FT_UINT32, BASE_DEC, NULL, 0,
"SEQUENCE_OF_RequestResults", HFILL }},
{ &hf_goose_result_item,
{ "RequestResults", "goose.RequestResults",
FT_UINT32, BASE_DEC, VALS(goose_RequestResults_vals), 0,
NULL, HFILL }},
{ &hf_goose_responseNegative,
{ "responseNegative", "goose.responseNegative",
FT_INT32, BASE_DEC, VALS(goose_GlbErrors_vals), 0,
"GlbErrors", HFILL }},
{ &hf_goose_offset,
{ "offset", "goose.offset",
FT_INT32, BASE_DEC, NULL, 0,
"INTEGER", HFILL }},
{ &hf_goose_reference,
{ "reference", "goose.reference",
FT_STRING, BASE_NONE, NULL, 0,
"IA5String", HFILL }},
{ &hf_goose_error,
{ "error", "goose.error",
FT_INT32, BASE_DEC, VALS(goose_ErrorReason_vals), 0,
"ErrorReason", HFILL }},
{ &hf_goose_gocbRef,
{ "gocbRef", "goose.gocbRef",
FT_STRING, BASE_NONE, NULL, 0,
"VisibleString", HFILL }},
{ &hf_goose_timeAllowedtoLive,
{ "timeAllowedtoLive", "goose.timeAllowedtoLive",
FT_INT32, BASE_DEC, NULL, 0,
"INTEGER", HFILL }},
{ &hf_goose_goID,
{ "goID", "goose.goID",
FT_STRING, BASE_NONE, NULL, 0,
"VisibleString", HFILL }},
{ &hf_goose_t,
{ "t", "goose.t",
FT_STRING, BASE_NONE, NULL, 0,
"UtcTime", HFILL }},
{ &hf_goose_stNum,
{ "stNum", "goose.stNum",
FT_UINT32, BASE_DEC, NULL, 0,
"INTEGER", HFILL }},
{ &hf_goose_sqNum,
{ "sqNum", "goose.sqNum",
FT_UINT32, BASE_DEC, NULL, 0,
"INTEGER", HFILL }},
{ &hf_goose_simulation,
{ "simulation", "goose.simulation",
FT_BOOLEAN, BASE_NONE, NULL, 0,
"BOOLEAN", HFILL }},
{ &hf_goose_ndsCom,
{ "ndsCom", "goose.ndsCom",
FT_BOOLEAN, BASE_NONE, NULL, 0,
"BOOLEAN", HFILL }},
{ &hf_goose_numDatSetEntries,
{ "numDatSetEntries", "goose.numDatSetEntries",
FT_INT32, BASE_DEC, NULL, 0,
"INTEGER", HFILL }},
{ &hf_goose_allData,
{ "allData", "goose.allData",
FT_UINT32, BASE_DEC, NULL, 0,
"SEQUENCE_OF_Data", HFILL }},
{ &hf_goose_allData_item,
{ "Data", "goose.Data",
FT_UINT32, BASE_DEC, VALS(goose_Data_vals), 0,
NULL, HFILL }},
{ &hf_goose_array,
{ "array", "goose.array",
FT_UINT32, BASE_DEC, NULL, 0,
"SEQUENCE_OF_Data", HFILL }},
{ &hf_goose_array_item,
{ "Data", "goose.Data",
FT_UINT32, BASE_DEC, VALS(goose_Data_vals), 0,
NULL, HFILL }},
{ &hf_goose_structure,
{ "structure", "goose.structure",
FT_UINT32, BASE_DEC, NULL, 0,
"SEQUENCE_OF_Data", HFILL }},
{ &hf_goose_structure_item,
{ "Data", "goose.Data",
FT_UINT32, BASE_DEC, VALS(goose_Data_vals), 0,
NULL, HFILL }},
{ &hf_goose_boolean,
{ "boolean", "goose.boolean",
FT_BOOLEAN, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_goose_bit_string,
{ "bit-string", "goose.bit_string",
FT_BYTES, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_goose_integer,
{ "integer", "goose.integer",
FT_INT32, BASE_DEC, NULL, 0,
NULL, HFILL }},
{ &hf_goose_unsigned,
{ "unsigned", "goose.unsigned",
FT_INT32, BASE_DEC, NULL, 0,
"INTEGER", HFILL }},
{ &hf_goose_floating_point,
{ "floating-point", "goose.floating_point",
FT_BYTES, BASE_NONE, NULL, 0,
"FloatingPoint", HFILL }},
{ &hf_goose_real,
{ "real", "goose.real",
FT_DOUBLE, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_goose_octet_string,
{ "octet-string", "goose.octet_string",
FT_BYTES, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_goose_visible_string,
{ "visible-string", "goose.visible_string",
FT_STRING, BASE_NONE, NULL, 0,
"VisibleString", HFILL }},
{ &hf_goose_binary_time,
{ "binary-time", "goose.binary_time",
FT_BYTES, BASE_NONE, NULL, 0,
"TimeOfDay", HFILL }},
{ &hf_goose_bcd,
{ "bcd", "goose.bcd",
FT_INT32, BASE_DEC, NULL, 0,
"INTEGER", HFILL }},
{ &hf_goose_booleanArray,
{ "booleanArray", "goose.booleanArray",
FT_BYTES, BASE_NONE, NULL, 0,
"BIT_STRING", HFILL }},
{ &hf_goose_objId,
{ "objId", "goose.objId",
FT_OID, BASE_NONE, NULL, 0,
"OBJECT_IDENTIFIER", HFILL }},
{ &hf_goose_mMSString,
{ "mMSString", "goose.mMSString",
FT_STRING, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_goose_utc_time,
{ "utc-time", "goose.utc_time",
FT_STRING, BASE_NONE, NULL, 0,
"UtcTime", HFILL }},
/*--- End of included file: packet-goose-hfarr.c ---*/
#line 567 "./asn1/goose/packet-goose-template.c"
};
/* List of subtrees */
static gint *ett[] = {
&ett_r_goose,
&ett_session_header,
&ett_security_info,
&ett_session_user_info,
&ett_payload,
&ett_padding,
&ett_goose,
&ett_reserve1,
&ett_expert_inf_sim,
/*--- Included file: packet-goose-ettarr.c ---*/
#line 1 "./asn1/goose/packet-goose-ettarr.c"
&ett_goose_GOOSEpdu,
&ett_goose_GSEMngtPdu,
&ett_goose_RequestResponse,
&ett_goose_GSEMngtRequests,
&ett_goose_GSEMngtResponses,
&ett_goose_GetReferenceRequestPdu,
&ett_goose_T_getReferenceRequest_offset,
&ett_goose_GetElementRequestPdu,
&ett_goose_T_references,
&ett_goose_GSEMngtResponsePdu,
&ett_goose_PositiveNegative,
&ett_goose_T_responsePositive,
&ett_goose_SEQUENCE_OF_RequestResults,
&ett_goose_RequestResults,
&ett_goose_IECGoosePdu,
&ett_goose_SEQUENCE_OF_Data,
&ett_goose_Data,
/*--- End of included file: packet-goose-ettarr.c ---*/
#line 581 "./asn1/goose/packet-goose-template.c"
};
static ei_register_info ei[] = {
{ &ei_goose_mal_utctime,
{ "goose.malformed.utctime", PI_MALFORMED, PI_WARN,
"BER Error: malformed UTCTime encoding", EXPFILL }},
{ &ei_goose_zero_pdu,
{ "goose.zero_pdu", PI_PROTOCOL, PI_ERROR,
"Internal error, zero-byte GOOSE PDU", EXPFILL }},
{ &ei_goose_invalid_sim,
{ "goose.invalid_sim", PI_PROTOCOL, PI_WARN,
"Invalid GOOSE: S bit set and Simulation attribute clear", EXPFILL }},
};
expert_module_t* expert_goose;
/* Register protocol */
proto_goose = proto_register_protocol(GOOSE_PNAME, GOOSE_PSNAME, GOOSE_PFNAME);
proto_r_goose = proto_register_protocol(R_GOOSE_PNAME, R_GOOSE_PSNAME, R_GOOSE_PFNAME);
goose_handle = register_dissector("goose", dissect_goose, proto_goose);
/* Register fields and subtrees */
proto_register_field_array(proto_goose, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
expert_goose = expert_register_protocol(proto_goose);
expert_register_field_array(expert_goose, ei, array_length(ei));
}
/*--- proto_reg_handoff_goose --- */
void proto_reg_handoff_goose(void) {
dissector_add_uint("ethertype", ETHERTYPE_IEC61850_GOOSE, goose_handle);
ositp_handle = find_dissector_add_dependency("ositp", proto_goose);
heur_dissector_add("udp", dissect_cltp_heur,
"CLTP over UDP", "cltp_udp", proto_goose, HEURISTIC_ENABLE);
heur_dissector_add("cltp", dissect_rgoose_heur,
"R-GOOSE (GOOSE over CLTP)", "rgoose_cltp", proto_goose, HEURISTIC_ENABLE);
}
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