mirror of
https://git.haproxy.org/git/haproxy.git/
synced 2026-01-19 09:01:05 +01:00
60ef19f137
ensures that we never insert too many entries in a headers input list. On the decoding side, a new error QPACK_ERR_TOO_LARGE is reported in this case. This prevents crash if headers number on a H3 request or response is superior to tune.http.maxhdr config value. Previously, a crash would occur in QPACK decoding function. Note that the process still crashes later with ABORT_NOW() because error reporting on frame parsing is not implemented for now. It should be treated with a RESET_STREAM frame in most cases. This can be backported up to 2.6.
52 lines
1.7 KiB
C
52 lines
1.7 KiB
C
/*
|
|
* 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, void *ctx);
|
|
int qpack_decode_dec(struct buffer *buf, void *ctx);
|
|
|
|
#endif /* _HAPROXY_QPACK_DEC_H */
|