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wireshark/epan/dissectors/packet-atn-cm.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-atn-cm.c */
/* asn2wrs.py -u -L -p atn-cm -c ./atn-cm.cnf -s ./packet-atn-cm-template -D . -O ../.. atn-cm.asn */
/* packet-atn-cm.c
* By Mathias Guettler <guettler@web.de>
* Copyright 2013
*
* Routines for ATN context management protocol packet disassembly.
* ATN context management allows an aircraft
* to log on to a ground facility.
* details see:
* http://en.wikipedia.org/wiki/CPDLC
* http://members.optusnet.com.au/~cjr/introduction.htm
* standards:
* http://legacy.icao.int/anb/panels/acp/repository.cfm
* note:
* We are dealing with ATN/CPDLC aka ICAO Doc 9705 Ed2 here
* (CPDLC may also be transmitted via ACARS/AOA aka "FANS-1/A ").
* 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/exceptions.h>
#include <epan/conversation.h>
#include "packet-ber.h"
#include "packet-per.h"
#include "packet-atn-ulcs.h"
#define ATN_CM_PROTO "ICAO Doc9705 CM"
void proto_register_atn_cm(void);
void proto_reg_handoff_atn_cm(void);
static int hf_atn_cm_CMAircraftMessage_PDU = -1; /* CMAircraftMessage */
static int hf_atn_cm_CMGroundMessage_PDU = -1; /* CMGroundMessage */
static int hf_atn_cm_cmLogonRequest = -1; /* CMLogonRequest */
static int hf_atn_cm_cmContactResponse = -1; /* CMContactResponse */
static int hf_atn_cm_cmAbortReason = -1; /* CMAbortReason */
static int hf_atn_cm_cmLogonResponse = -1; /* CMLogonResponse */
static int hf_atn_cm_cmUpdate = -1; /* CMUpdate */
static int hf_atn_cm_cmContactRequest = -1; /* CMContactRequest */
static int hf_atn_cm_cmForwardRequest = -1; /* CMForwardRequest */
static int hf_atn_cm_cmForwardResponse = -1; /* CMForwardResponse */
static int hf_atn_cm_longTsap = -1; /* LongTsap */
static int hf_atn_cm_shortTsap = -1; /* ShortTsap */
static int hf_atn_cm_aeQualifier = -1; /* AEQualifier */
static int hf_atn_cm_apVersion = -1; /* VersionNumber */
static int hf_atn_cm_apAddress = -1; /* APAddress */
static int hf_atn_cm_facilityDesignation = -1; /* FacilityDesignation */
static int hf_atn_cm_address = -1; /* LongTsap */
static int hf_atn_cm_aircraftFlightIdentification = -1; /* AircraftFlightIdentification */
static int hf_atn_cm_cMLongTSAP = -1; /* LongTsap */
static int hf_atn_cm_groundInitiatedApplications = -1; /* SEQUENCE_SIZE_1_256_OF_AEQualifierVersionAddress */
static int hf_atn_cm_groundInitiatedApplications_item = -1; /* AEQualifierVersionAddress */
static int hf_atn_cm_airOnlyInitiatedApplications = -1; /* SEQUENCE_SIZE_1_256_OF_AEQualifierVersion */
static int hf_atn_cm_airOnlyInitiatedApplications_item = -1; /* AEQualifierVersion */
static int hf_atn_cm_airportDeparture = -1; /* Airport */
static int hf_atn_cm_airportDestination = -1; /* Airport */
static int hf_atn_cm_dateTimeDepartureETD = -1; /* DateTime */
static int hf_atn_cm_airInitiatedApplications = -1; /* SEQUENCE_SIZE_1_256_OF_AEQualifierVersionAddress */
static int hf_atn_cm_airInitiatedApplications_item = -1; /* AEQualifierVersionAddress */
static int hf_atn_cm_groundOnlyInitiatedApplications = -1; /* SEQUENCE_SIZE_1_256_OF_AEQualifierVersion */
static int hf_atn_cm_groundOnlyInitiatedApplications_item = -1; /* AEQualifierVersion */
static int hf_atn_cm_year = -1; /* Year */
static int hf_atn_cm_month = -1; /* Month */
static int hf_atn_cm_day = -1; /* Day */
static int hf_atn_cm_date = -1; /* Date */
static int hf_atn_cm_time = -1; /* Time */
static int hf_atn_cm_rDP = -1; /* OCTET_STRING_SIZE_5 */
static int hf_atn_cm_aRS = -1; /* OCTET_STRING_SIZE_3 */
static int hf_atn_cm_locSysNselTsel = -1; /* OCTET_STRING_SIZE_10_11 */
static int hf_atn_cm_hours = -1; /* Timehours */
static int hf_atn_cm_minutes = -1; /* Timeminutes */
static gint ett_atn_cm_CMAircraftMessage = -1;
static gint ett_atn_cm_CMGroundMessage = -1;
static gint ett_atn_cm_APAddress = -1;
static gint ett_atn_cm_AEQualifierVersion = -1;
static gint ett_atn_cm_AEQualifierVersionAddress = -1;
static gint ett_atn_cm_CMContactRequest = -1;
static gint ett_atn_cm_CMLogonRequest = -1;
static gint ett_atn_cm_SEQUENCE_SIZE_1_256_OF_AEQualifierVersionAddress = -1;
static gint ett_atn_cm_SEQUENCE_SIZE_1_256_OF_AEQualifierVersion = -1;
static gint ett_atn_cm_CMLogonResponse = -1;
static gint ett_atn_cm_Date = -1;
static gint ett_atn_cm_DateTime = -1;
static gint ett_atn_cm_LongTsap = -1;
static gint ett_atn_cm_ShortTsap = -1;
static gint ett_atn_cm_Time = -1;
static gint ett_atn_cm = -1;
static int
dissect_atn_cm_AircraftFlightIdentification(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_IA5String(tvb, offset, actx, tree, hf_index,
2, 8, FALSE);
return offset;
}
static int
dissect_atn_cm_OCTET_STRING_SIZE_5(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_octet_string(tvb, offset, actx, tree, hf_index,
5, 5, FALSE, NULL);
return offset;
}
static int
dissect_atn_cm_OCTET_STRING_SIZE_3(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_octet_string(tvb, offset, actx, tree, hf_index,
3, 3, FALSE, NULL);
return offset;
}
static int
dissect_atn_cm_OCTET_STRING_SIZE_10_11(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_octet_string(tvb, offset, actx, tree, hf_index,
10, 11, FALSE, NULL);
return offset;
}
static const per_sequence_t ShortTsap_sequence[] = {
{ &hf_atn_cm_aRS , ASN1_NO_EXTENSIONS , ASN1_OPTIONAL , dissect_atn_cm_OCTET_STRING_SIZE_3 },
{ &hf_atn_cm_locSysNselTsel, ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_atn_cm_OCTET_STRING_SIZE_10_11 },
{ NULL, 0, 0, NULL }
};
static int
dissect_atn_cm_ShortTsap(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_sequence(tvb, offset, actx, tree, hf_index,
ett_atn_cm_ShortTsap, ShortTsap_sequence);
return offset;
}
static const per_sequence_t LongTsap_sequence[] = {
{ &hf_atn_cm_rDP , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_atn_cm_OCTET_STRING_SIZE_5 },
{ &hf_atn_cm_shortTsap , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_atn_cm_ShortTsap },
{ NULL, 0, 0, NULL }
};
static int
dissect_atn_cm_LongTsap(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_sequence(tvb, offset, actx, tree, hf_index,
ett_atn_cm_LongTsap, LongTsap_sequence);
return offset;
}
static int
dissect_atn_cm_AEQualifier(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_constrained_integer(tvb, offset, actx, tree, hf_index,
0U, 255U, NULL, FALSE);
return offset;
}
static int
dissect_atn_cm_VersionNumber(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_constrained_integer(tvb, offset, actx, tree, hf_index,
1U, 255U, NULL, FALSE);
return offset;
}
static const value_string atn_cm_APAddress_vals[] = {
{ 0, "longTsap" },
{ 1, "shortTsap" },
{ 0, NULL }
};
static const per_choice_t APAddress_choice[] = {
{ 0, &hf_atn_cm_longTsap , ASN1_NO_EXTENSIONS , dissect_atn_cm_LongTsap },
{ 1, &hf_atn_cm_shortTsap , ASN1_NO_EXTENSIONS , dissect_atn_cm_ShortTsap },
{ 0, NULL, 0, NULL }
};
static int
dissect_atn_cm_APAddress(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_choice(tvb, offset, actx, tree, hf_index,
ett_atn_cm_APAddress, APAddress_choice,
NULL);
return offset;
}
static const per_sequence_t AEQualifierVersionAddress_sequence[] = {
{ &hf_atn_cm_aeQualifier , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_atn_cm_AEQualifier },
{ &hf_atn_cm_apVersion , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_atn_cm_VersionNumber },
{ &hf_atn_cm_apAddress , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_atn_cm_APAddress },
{ NULL, 0, 0, NULL }
};
static int
dissect_atn_cm_AEQualifierVersionAddress(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_sequence(tvb, offset, actx, tree, hf_index,
ett_atn_cm_AEQualifierVersionAddress, AEQualifierVersionAddress_sequence);
return offset;
}
static const per_sequence_t SEQUENCE_SIZE_1_256_OF_AEQualifierVersionAddress_sequence_of[1] = {
{ &hf_atn_cm_groundInitiatedApplications_item, ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_atn_cm_AEQualifierVersionAddress },
};
static int
dissect_atn_cm_SEQUENCE_SIZE_1_256_OF_AEQualifierVersionAddress(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_constrained_sequence_of(tvb, offset, actx, tree, hf_index,
ett_atn_cm_SEQUENCE_SIZE_1_256_OF_AEQualifierVersionAddress, SEQUENCE_SIZE_1_256_OF_AEQualifierVersionAddress_sequence_of,
1, 256, FALSE);
return offset;
}
static const per_sequence_t AEQualifierVersion_sequence[] = {
{ &hf_atn_cm_aeQualifier , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_atn_cm_AEQualifier },
{ &hf_atn_cm_apVersion , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_atn_cm_VersionNumber },
{ NULL, 0, 0, NULL }
};
static int
dissect_atn_cm_AEQualifierVersion(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_sequence(tvb, offset, actx, tree, hf_index,
ett_atn_cm_AEQualifierVersion, AEQualifierVersion_sequence);
return offset;
}
static const per_sequence_t SEQUENCE_SIZE_1_256_OF_AEQualifierVersion_sequence_of[1] = {
{ &hf_atn_cm_airOnlyInitiatedApplications_item, ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_atn_cm_AEQualifierVersion },
};
static int
dissect_atn_cm_SEQUENCE_SIZE_1_256_OF_AEQualifierVersion(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_constrained_sequence_of(tvb, offset, actx, tree, hf_index,
ett_atn_cm_SEQUENCE_SIZE_1_256_OF_AEQualifierVersion, SEQUENCE_SIZE_1_256_OF_AEQualifierVersion_sequence_of,
1, 256, FALSE);
return offset;
}
static int
dissect_atn_cm_FacilityDesignation(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_IA5String(tvb, offset, actx, tree, hf_index,
4, 8, FALSE);
return offset;
}
static int
dissect_atn_cm_Airport(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_IA5String(tvb, offset, actx, tree, hf_index,
4, 4, FALSE);
return offset;
}
static int
dissect_atn_cm_Year(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_constrained_integer(tvb, offset, actx, tree, hf_index,
1996U, 2095U, NULL, FALSE);
return offset;
}
static int
dissect_atn_cm_Month(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_constrained_integer(tvb, offset, actx, tree, hf_index,
1U, 12U, NULL, FALSE);
return offset;
}
static int
dissect_atn_cm_Day(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_constrained_integer(tvb, offset, actx, tree, hf_index,
1U, 31U, NULL, FALSE);
return offset;
}
static const per_sequence_t Date_sequence[] = {
{ &hf_atn_cm_year , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_atn_cm_Year },
{ &hf_atn_cm_month , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_atn_cm_Month },
{ &hf_atn_cm_day , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_atn_cm_Day },
{ NULL, 0, 0, NULL }
};
static int
dissect_atn_cm_Date(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_sequence(tvb, offset, actx, tree, hf_index,
ett_atn_cm_Date, Date_sequence);
return offset;
}
static int
dissect_atn_cm_Timehours(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_constrained_integer(tvb, offset, actx, tree, hf_index,
0U, 23U, NULL, FALSE);
return offset;
}
static int
dissect_atn_cm_Timeminutes(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_constrained_integer(tvb, offset, actx, tree, hf_index,
0U, 59U, NULL, FALSE);
return offset;
}
static const per_sequence_t Time_sequence[] = {
{ &hf_atn_cm_hours , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_atn_cm_Timehours },
{ &hf_atn_cm_minutes , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_atn_cm_Timeminutes },
{ NULL, 0, 0, NULL }
};
static int
dissect_atn_cm_Time(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_sequence(tvb, offset, actx, tree, hf_index,
ett_atn_cm_Time, Time_sequence);
return offset;
}
static const per_sequence_t DateTime_sequence[] = {
{ &hf_atn_cm_date , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_atn_cm_Date },
{ &hf_atn_cm_time , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_atn_cm_Time },
{ NULL, 0, 0, NULL }
};
static int
dissect_atn_cm_DateTime(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_sequence(tvb, offset, actx, tree, hf_index,
ett_atn_cm_DateTime, DateTime_sequence);
return offset;
}
static const per_sequence_t CMLogonRequest_sequence[] = {
{ &hf_atn_cm_aircraftFlightIdentification, ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_atn_cm_AircraftFlightIdentification },
{ &hf_atn_cm_cMLongTSAP , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_atn_cm_LongTsap },
{ &hf_atn_cm_groundInitiatedApplications, ASN1_NO_EXTENSIONS , ASN1_OPTIONAL , dissect_atn_cm_SEQUENCE_SIZE_1_256_OF_AEQualifierVersionAddress },
{ &hf_atn_cm_airOnlyInitiatedApplications, ASN1_NO_EXTENSIONS , ASN1_OPTIONAL , dissect_atn_cm_SEQUENCE_SIZE_1_256_OF_AEQualifierVersion },
{ &hf_atn_cm_facilityDesignation, ASN1_NO_EXTENSIONS , ASN1_OPTIONAL , dissect_atn_cm_FacilityDesignation },
{ &hf_atn_cm_airportDeparture, ASN1_NO_EXTENSIONS , ASN1_OPTIONAL , dissect_atn_cm_Airport },
{ &hf_atn_cm_airportDestination, ASN1_NO_EXTENSIONS , ASN1_OPTIONAL , dissect_atn_cm_Airport },
{ &hf_atn_cm_dateTimeDepartureETD, ASN1_NO_EXTENSIONS , ASN1_OPTIONAL , dissect_atn_cm_DateTime },
{ NULL, 0, 0, NULL }
};
static int
dissect_atn_cm_CMLogonRequest(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_sequence(tvb, offset, actx, tree, hf_index,
ett_atn_cm_CMLogonRequest, CMLogonRequest_sequence);
return offset;
}
static const value_string atn_cm_Response_vals[] = {
{ 0, "contactSuccess" },
{ 1, "contactNotSuccessful" },
{ 0, NULL }
};
static int
dissect_atn_cm_Response(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_enumerated(tvb, offset, actx, tree, hf_index,
2, NULL, FALSE, 0, NULL);
return offset;
}
static int
dissect_atn_cm_CMContactResponse(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_atn_cm_Response(tvb, offset, actx, tree, hf_index);
return offset;
}
static const value_string atn_cm_CMAbortReason_vals[] = {
{ 0, "timer-expired" },
{ 1, "undefined-error" },
{ 2, "invalid-PDU" },
{ 3, "protocol-error" },
{ 4, "dialogue-acceptance-not-permitted" },
{ 5, "dialogue-end-not-accepted" },
{ 6, "communication-service-error" },
{ 7, "communication-service-failure" },
{ 8, "invalid-QOS-parameter" },
{ 9, "expected-PDU-missing" },
{ 0, NULL }
};
static int
dissect_atn_cm_CMAbortReason(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_enumerated(tvb, offset, actx, tree, hf_index,
10, NULL, TRUE, 0, NULL);
return offset;
}
static const value_string atn_cm_CMAircraftMessage_vals[] = {
{ 0, "cmLogonRequest" },
{ 1, "cmContactResponse" },
{ 2, "cmAbortReason" },
{ 0, NULL }
};
static const per_choice_t CMAircraftMessage_choice[] = {
{ 0, &hf_atn_cm_cmLogonRequest, ASN1_EXTENSION_ROOT , dissect_atn_cm_CMLogonRequest },
{ 1, &hf_atn_cm_cmContactResponse, ASN1_EXTENSION_ROOT , dissect_atn_cm_CMContactResponse },
{ 2, &hf_atn_cm_cmAbortReason, ASN1_EXTENSION_ROOT , dissect_atn_cm_CMAbortReason },
{ 0, NULL, 0, NULL }
};
static int
dissect_atn_cm_CMAircraftMessage(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_choice(tvb, offset, actx, tree, hf_index,
ett_atn_cm_CMAircraftMessage, CMAircraftMessage_choice,
NULL);
return offset;
}
static const per_sequence_t CMLogonResponse_sequence[] = {
{ &hf_atn_cm_airInitiatedApplications, ASN1_NO_EXTENSIONS , ASN1_OPTIONAL , dissect_atn_cm_SEQUENCE_SIZE_1_256_OF_AEQualifierVersionAddress },
{ &hf_atn_cm_groundOnlyInitiatedApplications, ASN1_NO_EXTENSIONS , ASN1_OPTIONAL , dissect_atn_cm_SEQUENCE_SIZE_1_256_OF_AEQualifierVersion },
{ NULL, 0, 0, NULL }
};
static int
dissect_atn_cm_CMLogonResponse(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_sequence(tvb, offset, actx, tree, hf_index,
ett_atn_cm_CMLogonResponse, CMLogonResponse_sequence);
return offset;
}
static int
dissect_atn_cm_CMUpdate(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_atn_cm_CMLogonResponse(tvb, offset, actx, tree, hf_index);
return offset;
}
static const per_sequence_t CMContactRequest_sequence[] = {
{ &hf_atn_cm_facilityDesignation, ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_atn_cm_FacilityDesignation },
{ &hf_atn_cm_address , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_atn_cm_LongTsap },
{ NULL, 0, 0, NULL }
};
static int
dissect_atn_cm_CMContactRequest(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_sequence(tvb, offset, actx, tree, hf_index,
ett_atn_cm_CMContactRequest, CMContactRequest_sequence);
return offset;
}
static int
dissect_atn_cm_CMForwardRequest(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_atn_cm_CMLogonRequest(tvb, offset, actx, tree, hf_index);
return offset;
}
static const value_string atn_cm_CMForwardResponse_vals[] = {
{ 0, "success" },
{ 1, "incompatible-version" },
{ 2, "service-not-supported" },
{ 0, NULL }
};
static int
dissect_atn_cm_CMForwardResponse(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_enumerated(tvb, offset, actx, tree, hf_index,
3, NULL, FALSE, 0, NULL);
return offset;
}
static const value_string atn_cm_CMGroundMessage_vals[] = {
{ 0, "cmLogonResponse" },
{ 1, "cmUpdate" },
{ 2, "cmContactRequest" },
{ 3, "cmForwardRequest" },
{ 4, "cmAbortReason" },
{ 5, "cmForwardResponse" },
{ 0, NULL }
};
static const per_choice_t CMGroundMessage_choice[] = {
{ 0, &hf_atn_cm_cmLogonResponse, ASN1_EXTENSION_ROOT , dissect_atn_cm_CMLogonResponse },
{ 1, &hf_atn_cm_cmUpdate , ASN1_EXTENSION_ROOT , dissect_atn_cm_CMUpdate },
{ 2, &hf_atn_cm_cmContactRequest, ASN1_EXTENSION_ROOT , dissect_atn_cm_CMContactRequest },
{ 3, &hf_atn_cm_cmForwardRequest, ASN1_EXTENSION_ROOT , dissect_atn_cm_CMForwardRequest },
{ 4, &hf_atn_cm_cmAbortReason, ASN1_EXTENSION_ROOT , dissect_atn_cm_CMAbortReason },
{ 5, &hf_atn_cm_cmForwardResponse, ASN1_EXTENSION_ROOT , dissect_atn_cm_CMForwardResponse },
{ 0, NULL, 0, NULL }
};
static int
dissect_atn_cm_CMGroundMessage(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_choice(tvb, offset, actx, tree, hf_index,
ett_atn_cm_CMGroundMessage, CMGroundMessage_choice,
NULL);
return offset;
}
/*--- PDUs ---*/
static int dissect_CMAircraftMessage_PDU(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_, void *data _U_) {
int offset = 0;
asn1_ctx_t asn1_ctx;
asn1_ctx_init(&asn1_ctx, ASN1_ENC_PER, FALSE, pinfo);
offset = dissect_atn_cm_CMAircraftMessage(tvb, offset, &asn1_ctx, tree, hf_atn_cm_CMAircraftMessage_PDU);
offset += 7; offset >>= 3;
return offset;
}
static int dissect_CMGroundMessage_PDU(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_, void *data _U_) {
int offset = 0;
asn1_ctx_t asn1_ctx;
asn1_ctx_init(&asn1_ctx, ASN1_ENC_PER, FALSE, pinfo);
offset = dissect_atn_cm_CMGroundMessage(tvb, offset, &asn1_ctx, tree, hf_atn_cm_CMGroundMessage_PDU);
offset += 7; offset >>= 3;
return offset;
}
static int proto_atn_cm = -1;
static int
dissect_atn_cm(
tvbuff_t *tvb,
packet_info *pinfo,
proto_tree *tree,
void *data _U_)
{
int type;
proto_tree *sub_tree;
sub_tree = proto_tree_add_subtree(
tree, tvb, 0, -1, ett_atn_cm, NULL, ATN_CM_PROTO);
/* ti = proto_tree_add_item(tree, proto_atn_cm, tvb, 0, 0 , ENC_NA); */
/* sub_tree = proto_item_add_subtree(ti, ett_atn_cm_pdu); */
/* determine whether it is uplink or downlink */
type = check_heur_msg_type(pinfo);
switch(type){
case um:
dissect_CMGroundMessage_PDU(
tvb,
pinfo,
sub_tree, NULL);
break;
case dm:
dissect_CMAircraftMessage_PDU(
tvb,
pinfo,
sub_tree, NULL);
break;
default:
break;
}
return tvb_reported_length_remaining(tvb, 0);
}
static gboolean
dissect_atn_cm_heur(
tvbuff_t *tvb,
packet_info *pinfo,
proto_tree *tree,
void *data _U_)
{
atn_conversation_t *volatile atn_cv = NULL;
volatile gboolean is_atn_cm = FALSE;
int type;
/* determine whether it is uplink or downlink */
type = check_heur_msg_type(pinfo);
/* heuristically decode message */
switch(type){
case um:
TRY {
dissect_CMGroundMessage_PDU(
tvb,
pinfo,
NULL, NULL);
/* no exception thrown: looks like it is a CM PDU */
is_atn_cm = TRUE; }
CATCH_ALL {
is_atn_cm = FALSE; }
ENDTRY;
break;
case dm:
TRY {
dissect_CMAircraftMessage_PDU(
tvb,
pinfo,
NULL, NULL);
/* no exception thrown: looks like it is a CM PDU */
is_atn_cm = TRUE;}
CATCH_ALL {
is_atn_cm = FALSE; }
ENDTRY;
break;
default:
break;
}
if (is_atn_cm == TRUE) {
/* note: */
/* all subsequent PDU's belonging to this conversation are considered CM */
/* if the first CM PDU has been decoded successfully */
/* (This is done in "atn-ulcs" by using "call_dissector_with_data()") */
/* DT: dstref present, srcref is always zero */
if((pinfo->clnp_dstref) &&
(!pinfo->clnp_srcref)){
atn_cv = find_atn_conversation(
&pinfo->dst,
pinfo->clnp_dstref,
&pinfo->src );
}
/* CR: srcref present, dstref is always zero */
if((!pinfo->clnp_dstref) &&
(pinfo->clnp_srcref)){
atn_cv = find_atn_conversation(
&pinfo->src,
pinfo->clnp_srcref,
&pinfo->dst );
}
/* CC: srcref and dstref present */
if((pinfo->clnp_dstref) &&
(pinfo->clnp_srcref)){
atn_cv = find_atn_conversation(
&pinfo->src,
pinfo->clnp_srcref,
&pinfo->dst );
}
if(atn_cv){
atn_cv->ae_qualifier = cma;
}
dissect_atn_cm(
tvb,
pinfo,
tree,
NULL);
}
return is_atn_cm;
}
void proto_register_atn_cm (void)
{
static hf_register_info hf_atn_cm[] = {
{ &hf_atn_cm_CMAircraftMessage_PDU,
{ "CMAircraftMessage", "atn-cm.CMAircraftMessage",
FT_UINT32, BASE_DEC, VALS(atn_cm_CMAircraftMessage_vals), 0,
NULL, HFILL }},
{ &hf_atn_cm_CMGroundMessage_PDU,
{ "CMGroundMessage", "atn-cm.CMGroundMessage",
FT_UINT32, BASE_DEC, VALS(atn_cm_CMGroundMessage_vals), 0,
NULL, HFILL }},
{ &hf_atn_cm_cmLogonRequest,
{ "cmLogonRequest", "atn-cm.cmLogonRequest_element",
FT_NONE, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_atn_cm_cmContactResponse,
{ "cmContactResponse", "atn-cm.cmContactResponse",
FT_UINT32, BASE_DEC, VALS(atn_cm_Response_vals), 0,
NULL, HFILL }},
{ &hf_atn_cm_cmAbortReason,
{ "cmAbortReason", "atn-cm.cmAbortReason",
FT_UINT32, BASE_DEC, VALS(atn_cm_CMAbortReason_vals), 0,
NULL, HFILL }},
{ &hf_atn_cm_cmLogonResponse,
{ "cmLogonResponse", "atn-cm.cmLogonResponse_element",
FT_NONE, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_atn_cm_cmUpdate,
{ "cmUpdate", "atn-cm.cmUpdate_element",
FT_NONE, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_atn_cm_cmContactRequest,
{ "cmContactRequest", "atn-cm.cmContactRequest_element",
FT_NONE, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_atn_cm_cmForwardRequest,
{ "cmForwardRequest", "atn-cm.cmForwardRequest_element",
FT_NONE, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_atn_cm_cmForwardResponse,
{ "cmForwardResponse", "atn-cm.cmForwardResponse",
FT_UINT32, BASE_DEC, VALS(atn_cm_CMForwardResponse_vals), 0,
NULL, HFILL }},
{ &hf_atn_cm_longTsap,
{ "longTsap", "atn-cm.longTsap_element",
FT_NONE, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_atn_cm_shortTsap,
{ "shortTsap", "atn-cm.shortTsap_element",
FT_NONE, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_atn_cm_aeQualifier,
{ "aeQualifier", "atn-cm.aeQualifier",
FT_UINT32, BASE_DEC, NULL, 0,
NULL, HFILL }},
{ &hf_atn_cm_apVersion,
{ "apVersion", "atn-cm.apVersion",
FT_UINT32, BASE_DEC, NULL, 0,
"VersionNumber", HFILL }},
{ &hf_atn_cm_apAddress,
{ "apAddress", "atn-cm.apAddress",
FT_UINT32, BASE_DEC, VALS(atn_cm_APAddress_vals), 0,
NULL, HFILL }},
{ &hf_atn_cm_facilityDesignation,
{ "facilityDesignation", "atn-cm.facilityDesignation",
FT_STRING, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_atn_cm_address,
{ "address", "atn-cm.address_element",
FT_NONE, BASE_NONE, NULL, 0,
"LongTsap", HFILL }},
{ &hf_atn_cm_aircraftFlightIdentification,
{ "aircraftFlightIdentification", "atn-cm.aircraftFlightIdentification",
FT_STRING, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_atn_cm_cMLongTSAP,
{ "cMLongTSAP", "atn-cm.cMLongTSAP_element",
FT_NONE, BASE_NONE, NULL, 0,
"LongTsap", HFILL }},
{ &hf_atn_cm_groundInitiatedApplications,
{ "groundInitiatedApplications", "atn-cm.groundInitiatedApplications",
FT_UINT32, BASE_DEC, NULL, 0,
"SEQUENCE_SIZE_1_256_OF_AEQualifierVersionAddress", HFILL }},
{ &hf_atn_cm_groundInitiatedApplications_item,
{ "AEQualifierVersionAddress", "atn-cm.AEQualifierVersionAddress_element",
FT_NONE, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_atn_cm_airOnlyInitiatedApplications,
{ "airOnlyInitiatedApplications", "atn-cm.airOnlyInitiatedApplications",
FT_UINT32, BASE_DEC, NULL, 0,
"SEQUENCE_SIZE_1_256_OF_AEQualifierVersion", HFILL }},
{ &hf_atn_cm_airOnlyInitiatedApplications_item,
{ "AEQualifierVersion", "atn-cm.AEQualifierVersion_element",
FT_NONE, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_atn_cm_airportDeparture,
{ "airportDeparture", "atn-cm.airportDeparture",
FT_STRING, BASE_NONE, NULL, 0,
"Airport", HFILL }},
{ &hf_atn_cm_airportDestination,
{ "airportDestination", "atn-cm.airportDestination",
FT_STRING, BASE_NONE, NULL, 0,
"Airport", HFILL }},
{ &hf_atn_cm_dateTimeDepartureETD,
{ "dateTimeDepartureETD", "atn-cm.dateTimeDepartureETD_element",
FT_NONE, BASE_NONE, NULL, 0,
"DateTime", HFILL }},
{ &hf_atn_cm_airInitiatedApplications,
{ "airInitiatedApplications", "atn-cm.airInitiatedApplications",
FT_UINT32, BASE_DEC, NULL, 0,
"SEQUENCE_SIZE_1_256_OF_AEQualifierVersionAddress", HFILL }},
{ &hf_atn_cm_airInitiatedApplications_item,
{ "AEQualifierVersionAddress", "atn-cm.AEQualifierVersionAddress_element",
FT_NONE, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_atn_cm_groundOnlyInitiatedApplications,
{ "groundOnlyInitiatedApplications", "atn-cm.groundOnlyInitiatedApplications",
FT_UINT32, BASE_DEC, NULL, 0,
"SEQUENCE_SIZE_1_256_OF_AEQualifierVersion", HFILL }},
{ &hf_atn_cm_groundOnlyInitiatedApplications_item,
{ "AEQualifierVersion", "atn-cm.AEQualifierVersion_element",
FT_NONE, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_atn_cm_year,
{ "year", "atn-cm.year",
FT_UINT32, BASE_DEC, NULL, 0,
NULL, HFILL }},
{ &hf_atn_cm_month,
{ "month", "atn-cm.month",
FT_UINT32, BASE_DEC, NULL, 0,
NULL, HFILL }},
{ &hf_atn_cm_day,
{ "day", "atn-cm.day",
FT_UINT32, BASE_DEC, NULL, 0,
NULL, HFILL }},
{ &hf_atn_cm_date,
{ "date", "atn-cm.date_element",
FT_NONE, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_atn_cm_time,
{ "time", "atn-cm.time_element",
FT_NONE, BASE_NONE, NULL, 0,
NULL, HFILL }},
{ &hf_atn_cm_rDP,
{ "rDP", "atn-cm.rDP",
FT_BYTES, BASE_NONE, NULL, 0,
"OCTET_STRING_SIZE_5", HFILL }},
{ &hf_atn_cm_aRS,
{ "aRS", "atn-cm.aRS",
FT_BYTES, BASE_NONE, NULL, 0,
"OCTET_STRING_SIZE_3", HFILL }},
{ &hf_atn_cm_locSysNselTsel,
{ "locSysNselTsel", "atn-cm.locSysNselTsel",
FT_BYTES, BASE_NONE, NULL, 0,
"OCTET_STRING_SIZE_10_11", HFILL }},
{ &hf_atn_cm_hours,
{ "hours", "atn-cm.hours",
FT_UINT32, BASE_DEC, NULL, 0,
"Timehours", HFILL }},
{ &hf_atn_cm_minutes,
{ "minutes", "atn-cm.minutes",
FT_UINT32, BASE_DEC, NULL, 0,
"Timeminutes", HFILL }},
};
static gint *ett[] = {
&ett_atn_cm_CMAircraftMessage,
&ett_atn_cm_CMGroundMessage,
&ett_atn_cm_APAddress,
&ett_atn_cm_AEQualifierVersion,
&ett_atn_cm_AEQualifierVersionAddress,
&ett_atn_cm_CMContactRequest,
&ett_atn_cm_CMLogonRequest,
&ett_atn_cm_SEQUENCE_SIZE_1_256_OF_AEQualifierVersionAddress,
&ett_atn_cm_SEQUENCE_SIZE_1_256_OF_AEQualifierVersion,
&ett_atn_cm_CMLogonResponse,
&ett_atn_cm_Date,
&ett_atn_cm_DateTime,
&ett_atn_cm_LongTsap,
&ett_atn_cm_ShortTsap,
&ett_atn_cm_Time,
&ett_atn_cm
};
/* register CM application */
proto_atn_cm = proto_register_protocol(
ATN_CM_PROTO ,
"ATN-CM",
"atn-cm");
proto_register_field_array(
proto_atn_cm,
hf_atn_cm,
array_length(hf_atn_cm));
proto_register_subtree_array(
ett,
array_length(ett));
register_dissector(
"atn-cm",
dissect_atn_cm,
proto_atn_cm);
}
void proto_reg_handoff_atn_cm(void)
{
/* add session dissector to subdissector list*/
heur_dissector_add(
"atn-ulcs",
dissect_atn_cm_heur,
"ATN-CM over ATN-ULCS",
"atn-cm-ulcs",
proto_atn_cm, HEURISTIC_ENABLE);
}
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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