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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 <arpa/inet.h>
#include <parc/algol/parc_Memory.h>
#include <LongBow/runtime.h>
#include "metis_TlvNameCodec.h"
#include "metis_Tlv.h"
CCNxName *
metisTlvNameCodec_Decode(uint8_t *buffer, size_t offset, size_t end)
{
assertNotNull(buffer, "Parameter buffer must be non-null");
assertTrue(end >= offset, "Buffer must be at least 4 bytes");
CCNxName *ccnxName = ccnxName_Create();
while (offset < end) {
trapIllegalValueIf(end < offset + 4, "Buffer must be at least 4 bytes")
{
ccnxName_Release(&ccnxName);
}
MetisTlvType *tlv = (MetisTlvType *) (buffer + offset);
uint16_t type = htons(tlv->type);
uint16_t length = htons(tlv->length);
offset += sizeof(MetisTlvType);
trapIllegalValueIf(offset + length > end, "name component extends beyond end of name")
{
ccnxName_Release(&ccnxName);
}
PARCBuffer *nameValue = parcBuffer_Wrap(&buffer[offset], length, 0, length);
CCNxNameSegment *segment = ccnxNameSegment_CreateTypeValue(type, nameValue);
parcBuffer_Release(&nameValue);
ccnxName_Append(ccnxName, segment);
ccnxNameSegment_Release(&segment);
offset += length;
}
return ccnxName;
}
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