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/*
* QPACK decompressor
*
* Copyright 2021 HAProxy Technologies, Frederic Lecaille <flecaille@haproxy.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation, version 2.1
* exclusively.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _HAPROXY_QPACK_DEC_H
#define _HAPROXY_QPACK_DEC_H
struct buffer;
struct http_hdr;
/* Internal QPACK processing errors.
*Nothing to see with the RFC.
*/
enum {
QPACK_ERR_NONE = 0, /* no error */
QPACK_ERR_RIC, /* cannot decode Required Insert Count prefix field */
QPACK_ERR_DB, /* cannot decode Delta Base prefix field */
QPACK_ERR_TRUNCATED, /* truncated stream */
QPACK_ERR_HUFFMAN, /* huffman decoding error */
QPACK_ERR_TOO_LARGE, /* decoded request/response is too large */
};
struct qpack_dec {
/* Insert count */
uint64_t ic;
/* Known received count */
uint64_t krc;
};
int qpack_decode_fs(const unsigned char *buf, uint64_t len, struct buffer *tmp,
struct http_hdr *list, int list_size);
int qpack_decode_enc(struct buffer *buf, int fin, void *ctx);
int qpack_decode_dec(struct buffer *buf, int fin, void *ctx);
#endif /* _HAPROXY_QPACK_DEC_H */
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