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a004ade512
The code was borrowed from the HPACK experimental implementations
available here :
https://github.com/wtarreau/http2-exp
It contains the Huffman table as specified in RFC7541 Appendix B, and a
set of reverse tables used to decode a Huffman byte stream, and produced
by contrib/h2/gen-rht. The encoder is not finalized, it doesn't emit the
byte stream but this is not needed for now.
36 lines
1.4 KiB
C
36 lines
1.4 KiB
C
/*
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* Huffman decoding and encoding for HPACK (RFC7541)
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*
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* Copyright (C) 2014-2017 Willy Tarreau <willy@haproxy.org>
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* Copyright (C) 2017 HAProxy Technologies
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef _PROTO_HPACK_HUFF_H
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#define _PROTO_HPACK_HUFF_H
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#include <stdint.h>
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int huff_enc(const char *s, char *out);
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int huff_dec(const uint8_t *huff, int hlen, char *out, int olen);
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#endif
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