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/*
* Copyright (c) 2017 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <LongBow/runtime.h>
#include <parc/algol/parc_Memory.h>
#include <parc/algol/parc_Object.h>
#include <parc/algol/parc_Buffer.h>
#include <ccnx/common/codec/schema_v1/ccnxCodecSchemaV1_Types.h>
#include <ccnx/common/codec/schema_v1/ccnxCodecSchemaV1_MessageDecoder.h>
#include <ccnx/common/codec/ccnxCodec_TlvUtilities.h>
#include <ccnx/common/ccnx_PayloadType.h>
#include <ccnx/common/ccnx_InterestReturn.h>
static bool
_translateWirePayloadTypeToCCNxPayloadType(CCNxCodecSchemaV1Types_PayloadType wireFormatType, CCNxPayloadType *payloadTypePtr)
{
bool success = true;
switch (wireFormatType) {
case CCNxCodecSchemaV1Types_PayloadType_Data:
*payloadTypePtr = CCNxPayloadType_DATA;
break;
case CCNxCodecSchemaV1Types_PayloadType_Key:
*payloadTypePtr = CCNxPayloadType_KEY;
break;
case CCNxCodecSchemaV1Types_PayloadType_Link:
*payloadTypePtr = CCNxPayloadType_LINK;
break;
default:
// unknown type
success = false;
}
return success;
}
/**
* Translates the wire format value for the PayloadType to CCNxPayloadType
*/
static bool
_decodePayloadType(CCNxCodecTlvDecoder *decoder, CCNxTlvDictionary *packetDictionary, uint16_t length)
{
CCNxPayloadType payloadType;
uint64_t wireFormatVarInt;
bool success = ccnxCodecTlvDecoder_GetVarInt(decoder, length, &wireFormatVarInt);
if (success) {
CCNxCodecSchemaV1Types_PayloadType wireFormatType = (CCNxCodecSchemaV1Types_PayloadType) wireFormatVarInt;
success = _translateWirePayloadTypeToCCNxPayloadType(wireFormatType, &payloadType);
}
if (success) {
success = ccnxTlvDictionary_PutInteger(packetDictionary, CCNxCodecSchemaV1TlvDictionary_MessageFastArray_PAYLOADTYPE, payloadType);
}
return success;
}
static bool
_decodeType(CCNxCodecTlvDecoder *decoder, CCNxTlvDictionary *packetDictionary, uint16_t type, uint16_t length)
{
bool success = false;
switch (type) {
case CCNxCodecSchemaV1Types_CCNxMessage_Name:
success = ccnxCodecTlvUtilities_PutAsName(decoder, packetDictionary, type, length, CCNxCodecSchemaV1TlvDictionary_MessageFastArray_NAME);
break;
case CCNxCodecSchemaV1Types_CCNxMessage_Payload:
success = ccnxCodecTlvUtilities_PutAsBuffer(decoder, packetDictionary, type, length, CCNxCodecSchemaV1TlvDictionary_MessageFastArray_PAYLOAD);
break;
case CCNxCodecSchemaV1Types_CCNxMessage_KeyIdRestriction:
success = ccnxCodecTlvUtilities_PutAsHash(decoder, packetDictionary, type, length, CCNxCodecSchemaV1TlvDictionary_MessageFastArray_KEYID_RESTRICTION);
break;
case CCNxCodecSchemaV1Types_CCNxMessage_ContentObjectHashRestriction:
success = ccnxCodecTlvUtilities_PutAsHash(decoder, packetDictionary, type, length, CCNxCodecSchemaV1TlvDictionary_MessageFastArray_OBJHASH_RESTRICTION);
break;
case CCNxCodecSchemaV1Types_CCNxMessage_PayloadType:
success = _decodePayloadType(decoder, packetDictionary, length);
break;
case CCNxCodecSchemaV1Types_CCNxMessage_ExpiryTime:
success = ccnxCodecTlvUtilities_PutAsInteger(decoder, packetDictionary, type, length, CCNxCodecSchemaV1TlvDictionary_MessageFastArray_EXPIRY_TIME);
break;
case CCNxCodecSchemaV1Types_CCNxMessage_EndChunkNumber:
success = ccnxCodecTlvUtilities_PutAsInteger(decoder, packetDictionary, type, length, CCNxCodecSchemaV1TlvDictionary_MessageFastArray_ENDSEGMENT);
break;
default:
// if we do not know the TLV type, put it in this container's unknown list
success = ccnxCodecTlvUtilities_PutAsListBuffer(decoder, packetDictionary, type, length, CCNxCodecSchemaV1TlvDictionary_Lists_MESSAGE_LIST);
break;
}
if (!success) {
CCNxCodecError *error = ccnxCodecError_Create(TLV_ERR_DECODE, __func__, __LINE__, ccnxCodecTlvDecoder_Position(decoder));
ccnxCodecTlvDecoder_SetError(decoder, error);
ccnxCodecError_Release(&error);
}
return success;
}
/*
* We are given a decoder that points to the first TLV of a list of TLVs. We keep walking the
* list until we come to the end of the decoder.
*/
bool
ccnxCodecSchemaV1MessageDecoder_Decode(CCNxCodecTlvDecoder *decoder, CCNxTlvDictionary *packetDictionary)
{
return ccnxCodecTlvUtilities_DecodeContainer(decoder, packetDictionary, _decodeType);
}
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