diff options
author | Luca Muscariello <lumuscar+fdio@cisco.com> | 2017-02-23 20:44:26 +0100 |
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committer | Luca Muscariello <lumuscar+fdio@cisco.com> | 2017-02-23 19:51:14 +0000 |
commit | d18ae43123fcd7604d1c36a1ec8450dbe6071824 (patch) | |
tree | 2d49fc3aabd0f2607251c854565648d47b56b2e9 /libccnx-common/ccnx/common/codec/schema_v1/ccnxCodecSchemaV1_FixedHeaderDecoder.h | |
parent | 9b30fc10fb1cbebe651e5a107e8ca5b24de54675 (diff) |
Initial commit: ccnxlibs.
Change-Id: I1b376527a7dd01a6b9e083a6cb646955902f45c0
Signed-off-by: Luca Muscariello <lumuscar+fdio@cisco.com>
Diffstat (limited to 'libccnx-common/ccnx/common/codec/schema_v1/ccnxCodecSchemaV1_FixedHeaderDecoder.h')
-rwxr-xr-x | libccnx-common/ccnx/common/codec/schema_v1/ccnxCodecSchemaV1_FixedHeaderDecoder.h | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/libccnx-common/ccnx/common/codec/schema_v1/ccnxCodecSchemaV1_FixedHeaderDecoder.h b/libccnx-common/ccnx/common/codec/schema_v1/ccnxCodecSchemaV1_FixedHeaderDecoder.h new file mode 100755 index 00000000..5d15f40b --- /dev/null +++ b/libccnx-common/ccnx/common/codec/schema_v1/ccnxCodecSchemaV1_FixedHeaderDecoder.h @@ -0,0 +1,165 @@ +/* + * 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. + */ + +/** + */ +#ifndef Libccnx_ccnxCodecSchemaV1_FixedHeaderDecoder_h +#define Libccnx_ccnxCodecSchemaV1_FixedHeaderDecoder_h + +#include <stdbool.h> + +#include <parc/algol/parc_Buffer.h> + +#include <ccnx/common/internal/ccnx_TlvDictionary.h> +#include <ccnx/common/codec/ccnxCodec_TlvDecoder.h> + +/** + * The decode a V1 fixed header + * + * The decoder should point to byte 0 of the Fixed Header. + * It will be advanced to the first byte following it. + * The results are put in the provided. + * + * @param [in] decoder The decoder to parse + * @param [in] dictionary The results go directly in to the provided dictionary. + * + * @return true Fully parsed interest, no errors + * @return false Error decoding, decoder is left pointing to the first byte of the error + * + * Example: + * @code + * <#example#> + * @endcode + */ +bool ccnxCodecSchemaV1FixedHeaderDecoder_Decode(CCNxCodecTlvDecoder *decoder, CCNxTlvDictionary *packetDictionary); + +/** + * A convenience function to return the version + * + * <#Paragraphs Of Explanation#> + * + * @param [in] fixedHeaderDictionary The FixedHeader dictionary + * + * @return positive The Version + * @return -1 The field does not exist + * + * Example: + * @code + * <#example#> + * @endcode + */ +int ccnxCodecSchemaV1FixedHeaderDecoder_GetVersion(CCNxTlvDictionary *packetDictionary); + +/** + * A convenience function to return the PacketType + * + * <#Paragraphs Of Explanation#> + * + * @param [in] fixedHeaderDictionary The FixedHeader dictionary + * + * @return positive The PacketType + * @return -1 The field does not exist + * + * Example: + * @code + * <#example#> + * @endcode + */ +int ccnxCodecSchemaV1FixedHeaderDecoder_GetPacketType(CCNxTlvDictionary *packetDictionary); + +/** + * A convenience function to return the PacketLength + * + * The PacketLength is measured from byte 0 to the end of the packet + * + * @param [in] fixedHeaderDictionary The FixedHeader dictionary + * + * @return positive The packet length (in host byte order) + * @return -1 The field does not exist + * + * Example: + * @code + * <#example#> + * @endcode + */ +int ccnxCodecSchemaV1FixedHeaderDecoder_GetPacketLength(CCNxTlvDictionary *packetDictionary); + +/** + * A convenience function to return the HeaderLength + * + * In a version 1 packet, the header length includes the fixed header. It is measured from + * byte 0 to the end of the hop-by-hop headers. + * + * @param [in] fixedHeaderDictionary The FixedHeader dictionary + * + * @return positive The header length + * @return -1 The field does not exist + * + * Example: + * @code + * <#example#> + * @endcode + */ +int ccnxCodecSchemaV1FixedHeaderDecoder_GetHeaderLength(CCNxTlvDictionary *packetDictionary); + +/** + * Returns the bytes of the optional headers + * + * Computes ccnxCodecSchemaV1FixedHeaderDecoder_GetHeaderLength() - sizeof(fixedHeader) + * + * @param [in] fixedHeaderDictionary The FixedHeader dictionary + * + * @retval non-negative The length of the optional headers + * @retval negative An error + * + * Example: + * @code + * <#example#> + * @endcode + */ +int ccnxCodecSchemaV1FixedHeaderDecoder_GetOptionalHeaderLength(CCNxTlvDictionary *packetDictionary); + + +/** + * A convenience function to return the ReturnCode of an Interest or InterestReturn + * + * @param [in] fixedHeaderDictionary The FixedHeader dictionary + * + * @return positive The Return Code + * @return -1 The field does not exist + * + * Example: + * @code + * <#example#> + * @endcode + */ +int ccnxCodecSchemaV1FixedHeaderDecoder_GetReturnCode(CCNxTlvDictionary *packetDictionary); + +/** + * A convenience function to return the header Flags + * + * @param [in] fixedHeaderDictionary The FixedHeader dictionary + * + * @return positive The flags + * @return -1 The field does not exist + * + * Example: + * @code + * <#example#> + * @endcode + */ +int ccnxCodecSchemaV1FixedHeaderDecoder_GetFlags(CCNxTlvDictionary *packetDictionary); + +#endif // Libccnx_ccnxCodecSchemaV1_FixedHeaderDecoder_h |