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packet-matter-im.cpp
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packet-matter-im.cpp
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/*
* Copyright (c) 2023 Project CHIP Authors.
*
* Use of this source code is governed by a BSD-style
* license that can be found in the LICENSE file or at
* https://opensource.org/license/bsd-3-clause
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <stdint.h>
#include <inttypes.h>
#include <stdio.h>
#include <glib.h>
#include "config.h"
#include <epan/packet.h>
#include <epan/strutil.h>
#include <epan/conversation_filter.h>
#include <Matter/Core/MatterCore.h>
#include <Matter/Core/MatterTLV.h>
#include <Matter/Protocols/MatterProfiles.h>
#include <Matter/Protocols/security/MatterSecurity.h>
#include <Matter/Protocols/interaction-model/MessageDef.h>
#include <Matter/Support/CodeUtils.h>
#include "packet-matter.h"
#include "TLVDissector.h"
#include "MatterMessageTracker.h"
using namespace matter;
using namespace matter::TLV;
using namespace matter::Profiles;
using namespace matter::Profiles::Security;
using namespace matter::Profiles::InteractionModel;
static int proto_im = -1;
static int ett_im = -1;
static int ett_im_message_container = -1;
static int ett_SubscribeRequest_LastObservedEventList = -1;
static int ett_SubscribeRequest_PathList = -1;
static int ett_SubscribeRequest_VersionList = -1;
static int ett_SubscribeResponse_LastVendedEventList = -1;
static int ett_CommandRequest_CommandList = -1;
static int ett_CommandResponse_InvokeResponseList = -1;
static int ett_CommandElem = -1;
static int ett_DataElem = -1;
static int hf_IM_SubscriptionId = -1;
static int hf_StatusResponse_Status = -1;
static int hf_ReadRequest_AttributeRequests = -1;
static int hf_ReadRequest_EventRequests = -1;
static int hf_ReadRequest_EventFilters = -1;
static int hf_ReadRequest_IsFabricFiltered = -1;
static int hf_ReadRequest_DataVersionFilters = -1;
static int hf_ReportData_SubscriptionID = -1;
static int hf_ReportData_AttributeReports = -1;
static int hf_ReportData_EventReports = -1;
static int hf_ReportData_MoreChunkedMessages = -1;
static int hf_ReportData_SuppressResponse = -1;
static int hf_WriteResponse_WriteResponses = -1;
static int hf_WriteRequest_SuppressResponse = -1;
static int hf_WriteRequest_TimedRequest = -1;
static int hf_WriteRequest_WriteRequests = -1;
static int hf_WriteRequest_MoreChunkedMessages = -1;
static int hf_SubscribeRequest_KeepSubscriptions = -1;
static int hf_SubscribeRequest_MinIntervalFloor = -1;
static int hf_SubscribeRequest_MaxIntervalCeiling = -1;
static int hf_SubscribeRequest_AttributeRequests = -1;
static int hf_SubscribeRequest_EventRequests = -1;
static int hf_SubscribeRequest_EventFilters = -1;
static int hf_SubscribeRequest_IsFabricFiltered = -1;
static int hf_SubscribeRequest_DataVersionFilters = -1;
static int hf_SubscribeResponse_SubscriptionID = -1;
static int hf_SubscribeResponse_MaxInterval = -1;
static int hf_CommandRequest_SuppressResponse = -1;
static int hf_CommandRequest_TimedRequest = -1;
static int hf_CommandRequest_CommandList = -1;
static int hf_CommandRequest_Path = -1;
static int hf_CommandRequest_CommandType = -1;
static int hf_CommandRequest_ExpiryTime = -1;
static int hf_CommandRequest_RequiredVersion = -1;
static int hf_CommandRequest_Argument = -1;
static int hf_CommandResponse_SuppressResponse = -1;
static int hf_CommandResponse_InvokeResponses = -1;
static int hf_CommandResponse_InvokeResponsesDetail = -1;
static int hf_CommandResponse_Version = -1;
static int hf_CommandResponse_Result = -1;
static int hf_CommandStatusIB = -1;
static int hf_CommandDataIB = -1;
static int hf_ImCommon_Version = -1;
static int hf_ImCommon_Unknown = -1;
static int hf_DataElem_PropertyPath = -1;
static int hf_DataElem_PropertyData = -1;
void AssociateWithIMSubscription(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree _U_, MatterMessageRecord *msgRec)
{
if (msgRec->imSubscription == 0) {
for (MatterMessageRecord *p = msgRec; p != NULL; p = p->prevByExchange) {
if (p->imSubscription != 0) {
msgRec->imSubscription = p->imSubscription;
break;
}
}
}
if (msgRec->imSubscription == 0) {
for (MatterMessageRecord *p = msgRec->nextByExchange; p != NULL; p = p->nextByExchange) {
if (p->imSubscription != 0) {
msgRec->imSubscription = p->imSubscription;
break;
}
}
}
// if (msgRec->imSubscription != 0) {
proto_item *item = proto_tree_add_uint64(tree, hf_IM_SubscriptionId, tvb, 0, 0, msgRec->imSubscription);
PROTO_ITEM_SET_HIDDEN(item);
// }
}
static MATTER_ERROR
AddCommandDataIB(TLVDissector& tlvDissector, proto_tree *tree, tvbuff_t* tvb)
{
MATTER_ERROR err;
proto_tree *dataElemTree;
err = tlvDissector.AddSubTreeItem(tree, hf_CommandDataIB, ett_CommandElem, tvb, dataElemTree);
SuccessOrExit(err);
err = tlvDissector.EnterContainer();
SuccessOrExit(err);
while (true) {
err = tlvDissector.Next();
if (err == MATTER_END_OF_TLV)
break;
SuccessOrExit(err);
uint64_t tag = tlvDissector.GetTag();
TLVType type = tlvDissector.GetType();
VerifyOrExit(IsContextTag(tag), err = MATTER_ERROR_UNEXPECTED_TLV_ELEMENT);
tag = TagNumFromTag(tag);
switch (tag) {
case CommandDataIB::kTag_Path:
VerifyOrExit(type == kTLVType_Path, err = MATTER_ERROR_UNEXPECTED_TLV_ELEMENT);
err = tlvDissector.AddIMPathItem(dataElemTree, hf_DataElem_PropertyPath, tvb);
SuccessOrExit(err);
break;
case CommandDataIB::kTag_Data:
err = tlvDissector.AddGenericTLVItem(dataElemTree, hf_DataElem_PropertyData, tvb, true);
SuccessOrExit(err);
break;
default:
ExitNow(err = MATTER_ERROR_UNEXPECTED_TLV_ELEMENT);
}
}
err = tlvDissector.ExitContainer();
SuccessOrExit(err);
exit:
return err;
}
static MATTER_ERROR
AddInvokeResponseIB(TLVDissector& tlvDissector, proto_tree *tree, tvbuff_t* tvb)
{
MATTER_ERROR err;
proto_tree *dataElemTree;
err = tlvDissector.EnterContainer();
SuccessOrExit(err);
while (true) {
err = tlvDissector.Next();
if (err == MATTER_END_OF_TLV)
break;
SuccessOrExit(err);
uint64_t tag = tlvDissector.GetTag();
TLVType type = tlvDissector.GetType();
VerifyOrExit(IsContextTag(tag), err = MATTER_ERROR_UNEXPECTED_TLV_ELEMENT);
tag = TagNumFromTag(tag);
switch (tag) {
case InvokeResponseIB::kTag_Command:
VerifyOrExit(type == kTLVType_Structure, err = MATTER_ERROR_UNEXPECTED_TLV_ELEMENT);
err = AddCommandDataIB(tlvDissector, tree, tvb);
SuccessOrExit(err);
break;
case InvokeResponseIB::kTag_Status:
err = tlvDissector.AddSubTreeItem(tree, hf_CommandStatusIB, ett_CommandElem, tvb, dataElemTree);
SuccessOrExit(err);
err = tlvDissector.AddGenericTLVItem(dataElemTree, hf_DataElem_PropertyData, tvb, true);
SuccessOrExit(err);
break;
default:
ExitNow(err = MATTER_ERROR_UNEXPECTED_TLV_ELEMENT);
}
}
err = tlvDissector.ExitContainer();
SuccessOrExit(err);
exit:
return err;
}
static int
DissectIMStatusResponse(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree _U_, const MatterMessageInfo& msgInfo)
{
MATTER_ERROR err;
const uint8_t *msgData = (const uint8_t *)tvb_memdup(pinfo->pool, tvb, 0, msgInfo.payloadLen);
TLVDissector tlvDissector;
int hf_entry;
proto_item_append_text(proto_tree_get_parent(tree), ": Status Report");
tlvDissector.Init(msgData, msgInfo.payloadLen);
err = tlvDissector.Next(kTLVType_Structure, AnonymousTag);
SuccessOrExit(err);
err = tlvDissector.EnterContainer();
SuccessOrExit(err);
while (true) {
err = tlvDissector.Next();
if (err == MATTER_END_OF_TLV)
break;
SuccessOrExit(err);
uint64_t tag = tlvDissector.GetTag();
VerifyOrExit(IsContextTag(tag), err = MATTER_ERROR_UNEXPECTED_TLV_ELEMENT);
tag = TagNumFromTag(tag);
switch (tag)
{
case StatusResponse::kTag_Status:
hf_entry = hf_StatusResponse_Status;
break;
case CommonActionInfo::kTag_InteractionModelRevision:
hf_entry = hf_ImCommon_Version;
break;
default:
hf_entry = hf_ImCommon_Unknown;
break;
}
SuccessOrExit(err = tlvDissector.AddGenericTLVItem(tree, hf_entry, tvb, false));
}
err = tlvDissector.ExitContainer();
SuccessOrExit(err);
exit:
return msgInfo.payloadLen;
}
static int
DissectIMReadRequest(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree _U_, const MatterMessageInfo& msgInfo)
{
MATTER_ERROR err;
const uint8_t *msgData = (const uint8_t *)tvb_memdup(pinfo->pool, tvb, 0, msgInfo.payloadLen);
TLVDissector tlvDissector;
int hf_entry = -1;
proto_item_append_text(proto_tree_get_parent(tree), ": Read Request");
tlvDissector.Init(msgData, msgInfo.payloadLen);
err = tlvDissector.Next(kTLVType_Structure, AnonymousTag);
SuccessOrExit(err);
err = tlvDissector.EnterContainer();
SuccessOrExit(err);
while (true) {
err = tlvDissector.Next();
if (err == MATTER_END_OF_TLV)
break;
SuccessOrExit(err);
uint64_t tag = tlvDissector.GetTag();
VerifyOrExit(IsContextTag(tag), err = MATTER_ERROR_UNEXPECTED_TLV_ELEMENT);
tag = TagNumFromTag(tag);
switch (tag) {
case ReadRequest::kTag_AttributeRequests:
hf_entry = hf_ReadRequest_AttributeRequests;
break;
case ReadRequest::kTag_EventRequests:
hf_entry = hf_ReadRequest_EventRequests;
break;
case ReadRequest::kTag_EventFilters:
hf_entry = hf_ReadRequest_EventFilters;
break;
case ReadRequest::kTag_IsFabricFiltered:
hf_entry = hf_ReadRequest_IsFabricFiltered;
break;
case ReadRequest::kTag_DataVersionFilters:
hf_entry = hf_ReadRequest_DataVersionFilters;
break;
case CommonActionInfo::kTag_InteractionModelRevision:
hf_entry = hf_ImCommon_Version;
break;
default:
hf_entry = hf_ImCommon_Unknown;
break;
}
SuccessOrExit(err = tlvDissector.AddGenericTLVItem(tree, hf_entry, tvb, false));
}
err = tlvDissector.ExitContainer();
SuccessOrExit(err);
exit:
return msgInfo.payloadLen;
}
static int
DissectIMReportData(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree _U_, const MatterMessageInfo& msgInfo)
{
MATTER_ERROR err;
const uint8_t *msgData = (const uint8_t *)tvb_memdup(pinfo->pool, tvb, 0, msgInfo.payloadLen);
TLVDissector tlvDissector;
int hf_entry = -1;
proto_item_append_text(proto_tree_get_parent(tree), ": Report Data");
tlvDissector.Init(msgData, msgInfo.payloadLen);
err = tlvDissector.Next(kTLVType_Structure, AnonymousTag);
SuccessOrExit(err);
err = tlvDissector.EnterContainer();
SuccessOrExit(err);
while (true) {
err = tlvDissector.Next();
if (err == MATTER_END_OF_TLV)
break;
SuccessOrExit(err);
uint64_t tag = tlvDissector.GetTag();
VerifyOrExit(IsContextTag(tag), err = MATTER_ERROR_UNEXPECTED_TLV_ELEMENT);
tag = TagNumFromTag(tag);
switch (tag) {
case ReportData::kTag_SubscriptionID:
hf_entry = hf_ReportData_SubscriptionID;
break;
case ReportData::kTag_AttributeReports:
hf_entry = hf_ReportData_AttributeReports;
break;
case ReportData::kTag_EventReports:
hf_entry = hf_ReportData_EventReports;
break;
case ReportData::kTag_MoreChunkedMessages:
hf_entry = hf_ReportData_MoreChunkedMessages;
break;
case ReportData::kTag_SuppressResponse:
hf_entry = hf_ReportData_SuppressResponse;
break;
case CommonActionInfo::kTag_InteractionModelRevision:
hf_entry = hf_ImCommon_Version;
break;
default:
hf_entry = hf_ImCommon_Unknown;
break;
}
SuccessOrExit(err = tlvDissector.AddGenericTLVItem(tree, hf_entry, tvb, false));
}
err = tlvDissector.ExitContainer();
SuccessOrExit(err);
exit:
return msgInfo.payloadLen;
}
static int
DissectIMSubscribeRequest(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree _U_, const MatterMessageInfo& msgInfo)
{
MATTER_ERROR err;
const uint8_t *msgData = (const uint8_t *)tvb_memdup(pinfo->pool, tvb, 0, msgInfo.payloadLen);
TLVDissector tlvDissector;
int hf_entry = -1;
proto_item_append_text(proto_tree_get_parent(tree), ": Subscribe Request");
tlvDissector.Init(msgData, msgInfo.payloadLen);
err = tlvDissector.Next(kTLVType_Structure, AnonymousTag);
SuccessOrExit(err);
err = tlvDissector.EnterContainer();
SuccessOrExit(err);
while (true) {
err = tlvDissector.Next();
if (err == MATTER_END_OF_TLV)
break;
SuccessOrExit(err);
uint64_t tag = tlvDissector.GetTag();
VerifyOrExit(IsContextTag(tag), err = MATTER_ERROR_UNEXPECTED_TLV_ELEMENT);
tag = TagNumFromTag(tag);
switch (tag) {
case SubscribeRequest::kTag_KeepSubscriptions:
hf_entry = hf_SubscribeRequest_KeepSubscriptions;
break;
case SubscribeRequest::kTag_MinIntervalFloor:
hf_entry = hf_SubscribeRequest_MinIntervalFloor;
break;
case SubscribeRequest::kTag_MaxIntervalCeiling:
hf_entry = hf_SubscribeRequest_MaxIntervalCeiling;
break;
case SubscribeRequest::kTag_AttributeRequests:
hf_entry = hf_SubscribeRequest_AttributeRequests;
break;
case SubscribeRequest::kTag_EventRequests:
hf_entry = hf_SubscribeRequest_EventRequests;
break;
case SubscribeRequest::kTag_EventFilters:
hf_entry = hf_SubscribeRequest_EventFilters;
break;
case SubscribeRequest::kTag_IsFabricFiltered:
hf_entry = hf_SubscribeRequest_IsFabricFiltered;
break;
case SubscribeRequest::kTag_DataVersionFilters:
hf_entry = hf_SubscribeRequest_DataVersionFilters;
break;
case CommonActionInfo::kTag_InteractionModelRevision:
hf_entry = hf_ImCommon_Version;
break;
default:
hf_entry = hf_ImCommon_Unknown;
break;
}
SuccessOrExit(err = tlvDissector.AddGenericTLVItem(tree, hf_entry, tvb, false));
}
err = tlvDissector.ExitContainer();
SuccessOrExit(err);
exit:
return msgInfo.payloadLen;
}
static int
DissectIMSubscribeResponse(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree _U_, const MatterMessageInfo& msgInfo)
{
MATTER_ERROR err;
const uint8_t *msgData = (const uint8_t *)tvb_memdup(pinfo->pool, tvb, 0, msgInfo.payloadLen);
TLVDissector tlvDissector;
int hf_entry = -1;
proto_item_append_text(proto_tree_get_parent(tree), ": Subscribe Response");
tlvDissector.Init(msgData, msgInfo.payloadLen);
err = tlvDissector.Next(kTLVType_Structure, AnonymousTag);
SuccessOrExit(err);
err = tlvDissector.EnterContainer();
SuccessOrExit(err);
while (true) {
err = tlvDissector.Next();
if (err == MATTER_END_OF_TLV)
break;
SuccessOrExit(err);
uint64_t tag = tlvDissector.GetTag();
VerifyOrExit(IsContextTag(tag), err = MATTER_ERROR_UNEXPECTED_TLV_ELEMENT);
tag = TagNumFromTag(tag);
switch (tag) {
case SubscribeResponse::kTag_SubscriptionID:
hf_entry = hf_SubscribeResponse_SubscriptionID;
break;
case SubscribeResponse::kTag_MaxInterval:
hf_entry = hf_SubscribeResponse_MaxInterval;
break;
case CommonActionInfo::kTag_InteractionModelRevision:
hf_entry = hf_ImCommon_Version;
break;
default:
hf_entry = hf_ImCommon_Unknown;
break;
}
SuccessOrExit(err = tlvDissector.AddGenericTLVItem(tree, hf_entry, tvb, false));
}
err = tlvDissector.ExitContainer();
SuccessOrExit(err);
exit:
return msgInfo.payloadLen;
}
static int
DissectIMWriteRequest(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree _U_, const MatterMessageInfo& msgInfo)
{
MATTER_ERROR err;
const uint8_t *msgData = (const uint8_t *)tvb_memdup(pinfo->pool, tvb, 0, msgInfo.payloadLen);
TLVDissector tlvDissector;
int hf_entry = -1;
proto_item_append_text(proto_tree_get_parent(tree), ": Write Request");
tlvDissector.Init(msgData, msgInfo.payloadLen);
err = tlvDissector.Next(kTLVType_Structure, AnonymousTag);
SuccessOrExit(err);
err = tlvDissector.EnterContainer();
SuccessOrExit(err);
while (true) {
err = tlvDissector.Next();
if (err == MATTER_END_OF_TLV)
break;
SuccessOrExit(err);
uint64_t tag = tlvDissector.GetTag();
VerifyOrExit(IsContextTag(tag), err = MATTER_ERROR_UNEXPECTED_TLV_ELEMENT);
tag = TagNumFromTag(tag);
switch (tag) {
case WriteRequest::kTag_SuppressResponse:
hf_entry = hf_WriteRequest_SuppressResponse;
break;
case WriteRequest::kTag_TimedRequest:
hf_entry = hf_WriteRequest_TimedRequest;
break;
case WriteRequest::kTag_WriteRequests:
hf_entry = hf_WriteRequest_WriteRequests;
break;
case WriteRequest::kTag_MoreChunkedMessages:
hf_entry = hf_WriteRequest_MoreChunkedMessages;
break;
case CommonActionInfo::kTag_InteractionModelRevision:
hf_entry = hf_ImCommon_Version;
break;
default:
hf_entry = hf_ImCommon_Unknown;
break;
}
SuccessOrExit(err = tlvDissector.AddGenericTLVItem(tree, hf_entry, tvb, false));
}
err = tlvDissector.ExitContainer();
SuccessOrExit(err);
exit:
return msgInfo.payloadLen;
}
static int
DissectIMWriteResponse(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree _U_, const MatterMessageInfo& msgInfo)
{
MATTER_ERROR err;
const uint8_t *msgData = (const uint8_t *)tvb_memdup(pinfo->pool, tvb, 0, msgInfo.payloadLen);
TLVDissector tlvDissector;
int hf_entry = -1;
proto_item_append_text(proto_tree_get_parent(tree), ": Write Response");
tlvDissector.Init(msgData, msgInfo.payloadLen);
err = tlvDissector.Next(kTLVType_Structure, AnonymousTag);
SuccessOrExit(err);
err = tlvDissector.EnterContainer();
SuccessOrExit(err);
while (true) {
err = tlvDissector.Next();
if (err == MATTER_END_OF_TLV)
break;
SuccessOrExit(err);
uint64_t tag = tlvDissector.GetTag();
VerifyOrExit(IsContextTag(tag), err = MATTER_ERROR_UNEXPECTED_TLV_ELEMENT);
tag = TagNumFromTag(tag);
switch (tag) {
case WriteResponse::kTag_WriteResponses:
hf_entry = hf_WriteResponse_WriteResponses;
break;
case CommonActionInfo::kTag_InteractionModelRevision:
hf_entry = hf_ImCommon_Version;
break;
default:
hf_entry = hf_ImCommon_Unknown;
break;
}
SuccessOrExit(err = tlvDissector.AddGenericTLVItem(tree, hf_entry, tvb, false));
}
err = tlvDissector.ExitContainer();
SuccessOrExit(err);
exit:
return msgInfo.payloadLen;
}
static int
DissectIMCommandRequest(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree _U_, const MatterMessageInfo& msgInfo)
{
MATTER_ERROR err;
const uint8_t *msgData = (const uint8_t *)tvb_memdup(pinfo->pool, tvb, 0, msgInfo.payloadLen);
TLVDissector tlvDissector;
proto_item_append_text(proto_tree_get_parent(tree), ": Invoke Command Request");
tlvDissector.Init(msgData, msgInfo.payloadLen);
err = tlvDissector.Next(kTLVType_Structure, AnonymousTag);
SuccessOrExit(err);
err = tlvDissector.EnterContainer();
SuccessOrExit(err);
while (true) {
err = tlvDissector.Next();
if (err == MATTER_END_OF_TLV)
break;
SuccessOrExit(err);
uint64_t tag = tlvDissector.GetTag();
TLVType type = tlvDissector.GetType();
VerifyOrExit(IsContextTag(tag), err = MATTER_ERROR_UNEXPECTED_TLV_ELEMENT);
tag = TagNumFromTag(tag);
switch (tag) {
case InvokeCommandRequest::kTag_SuppressResponse:
VerifyOrExit(type == kTLVType_Boolean, err = MATTER_ERROR_UNEXPECTED_TLV_ELEMENT);
err = tlvDissector.AddTypedItem(tree, hf_CommandRequest_SuppressResponse, tvb);
SuccessOrExit(err);
break;
case InvokeCommandRequest::kTag_TimedRequest:
VerifyOrExit(type == kTLVType_Boolean, err = MATTER_ERROR_UNEXPECTED_TLV_ELEMENT);
err = tlvDissector.AddTypedItem(tree, hf_CommandRequest_TimedRequest, tvb);
SuccessOrExit(err);
break;
case InvokeCommandRequest::kTag_CommandList:
VerifyOrExit(type == kTLVType_Array, err = MATTER_ERROR_UNEXPECTED_TLV_ELEMENT);
err = tlvDissector.AddListItem(tree, hf_CommandRequest_CommandList, ett_CommandRequest_CommandList, tvb, AddCommandDataIB);
SuccessOrExit(err);
break;
case CommonActionInfo::kTag_InteractionModelRevision:
SuccessOrExit(err = tlvDissector.AddGenericTLVItem(tree, hf_ImCommon_Version, tvb, false));
break;
default:
ExitNow(err = MATTER_ERROR_UNEXPECTED_TLV_ELEMENT);
}
}
err = tlvDissector.ExitContainer();
SuccessOrExit(err);
exit:
return msgInfo.payloadLen;
}
static int
DissectIMCommandResponse(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree _U_, const MatterMessageInfo& msgInfo)
{
MATTER_ERROR err;
const uint8_t *msgData = (const uint8_t *)tvb_memdup(pinfo->pool, tvb, 0, msgInfo.payloadLen);
TLVDissector tlvDissector;
int hf_entry = -1;
proto_item_append_text(proto_tree_get_parent(tree), ": Invoke Command Response");
tlvDissector.Init(msgData, msgInfo.payloadLen);
err = tlvDissector.Next(kTLVType_Structure, AnonymousTag);
SuccessOrExit(err);
err = tlvDissector.EnterContainer();
SuccessOrExit(err);
while (true) {
err = tlvDissector.Next();
if (err == MATTER_END_OF_TLV)
break;
SuccessOrExit(err);
uint64_t tag = tlvDissector.GetTag();
VerifyOrExit(IsContextTag(tag), err = MATTER_ERROR_UNEXPECTED_TLV_ELEMENT);
tag = TagNumFromTag(tag);
switch (tag) {
case InvokeCommandResponse::kTag_SuppressResponse:
hf_entry = hf_CommandResponse_SuppressResponse;
break;
case InvokeCommandResponse::kTag_InvokeResponses:
hf_entry = hf_CommandResponse_InvokeResponses;
break;
/*
// Alternative implementation to perform deeper parsing of element:
case InvokeCommandResponse::kTag_InvokeResponses:
VerifyOrExit(type == kTLVType_Array, err = MATTER_ERROR_UNEXPECTED_TLV_ELEMENT);
hf_entry = -1;
err = tlvDissector.AddListItem(tree, hf_CommandResponse_InvokeResponsesDetail, ett_CommandResponse_InvokeResponseList, tvb, AddInvokeResponseIB);
SuccessOrExit(err);
break;
*/
case CommonActionInfo::kTag_InteractionModelRevision:
hf_entry = hf_ImCommon_Version;
break;
default:
hf_entry = hf_ImCommon_Unknown;
break;
}
if (hf_entry != -1) {
SuccessOrExit(err = tlvDissector.AddGenericTLVItem(tree, hf_entry, tvb, false));
}
}
err = tlvDissector.ExitContainer();
SuccessOrExit(err);
exit:
return msgInfo.payloadLen;
}
static int
DissectIMTimedRequest(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree _U_, const MatterMessageInfo& msgInfo)
{
MATTER_ERROR err;
const uint8_t *msgData = (const uint8_t *)tvb_memdup(pinfo->pool, tvb, 0, msgInfo.payloadLen);
TLVDissector tlvDissector;
proto_item_append_text(proto_tree_get_parent(tree), ": Timed Request");
tlvDissector.Init(msgData, msgInfo.payloadLen);
err = tlvDissector.Next(kTLVType_Structure, AnonymousTag);
SuccessOrExit(err);
err = tlvDissector.AddGenericTLVItem(tree, hf_ImCommon_Unknown, tvb, true);
SuccessOrExit(err);
exit:
return msgInfo.payloadLen;
}
static int
DissectIM(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree _U_, void *data _U_)
{
const MatterMessageInfo& msgInfo = *(const MatterMessageInfo *)data;
AddMessageTypeToInfoColumn(pinfo, msgInfo);
proto_item *top = proto_tree_add_item(tree, proto_im, tvb, 0, -1, ENC_NA);
proto_tree *im_tree = proto_item_add_subtree(top, ett_im);
switch (msgInfo.msgType) {
case kMsgType_StatusResponse:
return DissectIMStatusResponse(tvb, pinfo, im_tree, msgInfo);
case kMsgType_ReadRequest:
return DissectIMReadRequest(tvb, pinfo, im_tree, msgInfo);
case kMsgType_ReportData:
return DissectIMReportData(tvb, pinfo, im_tree, msgInfo);
case kMsgType_SubscribeRequest:
return DissectIMSubscribeRequest(tvb, pinfo, im_tree, msgInfo);
case kMsgType_SubscribeResponse:
return DissectIMSubscribeResponse(tvb, pinfo, im_tree, msgInfo);
case kMsgType_WriteRequest:
return DissectIMWriteRequest(tvb, pinfo, im_tree, msgInfo);
case kMsgType_WriteResponse:
return DissectIMWriteResponse(tvb, pinfo, im_tree, msgInfo);
case kMsgType_InvokeRequest:
return DissectIMCommandRequest(tvb, pinfo, im_tree, msgInfo);
case kMsgType_InvokeResponse:
return DissectIMCommandResponse(tvb, pinfo, im_tree, msgInfo);
case kMsgType_TimedRequest:
return DissectIMTimedRequest(tvb, pinfo, im_tree, msgInfo);
default:
return 0;
}
}
static gboolean IMSubscriptionFilter_IsValid(struct _packet_info *pinfo)
{
MatterMessageRecord *msgRec = MatterMessageTracker::FindMessageRecord(pinfo);
return msgRec != NULL && msgRec->imSubscription != 0;
}
static gchar* IMSubscriptionFilter_BuildFilterString(struct _packet_info *pinfo)
{
MatterMessageRecord *msgRec = MatterMessageTracker::FindMessageRecord(pinfo);
return g_strdup_printf(("im.subscription_id eq 0x%016" PRIX64), msgRec->imSubscription);
}
void
proto_register_matter_im(void)
{
static hf_register_info hf[] = {
{ &hf_IM_SubscriptionId,
{ "Subscription Id", "im.struct.subscription_id",
FT_UINT64, BASE_HEX, NULL, 0x0, NULL, HFILL }
},
// ===== Common Action Info =====
{ &hf_ImCommon_Version,
{ "InteractionModelRevision", "im.common.revision",
FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
{ &hf_ImCommon_Unknown,
{ "Unknown", "im.unknown",
FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
// ===== Status Response =====
{ &hf_StatusResponse_Status,
{ "Status", "im.status_rsp.status",
FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
// ===== Read Request =====
{ &hf_ReadRequest_AttributeRequests,
{ "AttributeRequests", "im.read_req.attr_reqs",
FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
{ &hf_ReadRequest_EventRequests,
{ "EventRequests", "im.read_req.event_reqs",
FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
{ &hf_ReadRequest_EventFilters,
{ "EventFilters", "im.read_req.event_filters",
FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
{ &hf_ReadRequest_IsFabricFiltered,
{ "IsFabricFiltered", "im.read_req.is_fabric_filtered",
FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
{ &hf_ReadRequest_DataVersionFilters,
{ "DataVersionFilters", "im.read_req.data_version_filters",
FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
// ===== Report Data =====
{ &hf_ReportData_SubscriptionID,
{ "SubscriptionID", "im.report_data.SubscriptionID",
FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
{ &hf_ReportData_AttributeReports,
{ "AttributeReports", "im.report_data.AttributeReports",
FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
{ &hf_ReportData_EventReports,
{ "EventReports", "im.report_data.EventReports",
FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
{ &hf_ReportData_MoreChunkedMessages,
{ "MoreChunkedMessages", "im.report_data.MoreChunkedMessages",
FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
{ &hf_ReportData_SuppressResponse,
{ "SuppressResponse", "im.report_data.SuppressResponse",
FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
// ===== Write Request =====
{ &hf_WriteRequest_SuppressResponse,
{ "SuppressResponse", "im.write_req.SuppressResponse",
FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
{ &hf_WriteRequest_TimedRequest,
{ "TimedRequest", "im.write_req.TimedRequest",
FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
{ &hf_WriteRequest_WriteRequests,
{ "WriteRequests", "im.write_req.WriteRequests",
FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
{ &hf_WriteRequest_MoreChunkedMessages,
{ "MoreChunkedMessages", "im.write_req.MoreChunkedMessages",
FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
// ===== Write Response =====
{ &hf_WriteResponse_WriteResponses,
{ "WriteResponses", "im.write_rsp.WriteResponses",
FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
// ===== Subscribe Request =====
{ &hf_SubscribeRequest_KeepSubscriptions,
{ "KeepSubscriptions", "im.sub_req.KeepSubscriptions",
FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
{ &hf_SubscribeRequest_MinIntervalFloor,
{ "MinIntervalFloor", "im.sub_req.MinIntervalFloor",
FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
{ &hf_SubscribeRequest_MaxIntervalCeiling,
{ "MaxIntervalCeiling", "im.sub_req.MaxIntervalCeiling",
FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
{ &hf_SubscribeRequest_AttributeRequests,
{ "AttributeRequests", "im.sub_req.AttributeRequests",
FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
{ &hf_SubscribeRequest_EventRequests,
{ "EventRequests", "im.sub_req.EventRequests",
FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},