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view src/core/ngx_shmtx.h @ 8717:e06283038ec8 quic

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QUIC: clear SSL_OP_ENABLE_MIDDLEBOX_COMPAT on SSL context switch. The SSL_OP_ENABLE_MIDDLEBOX_COMPAT option is provided by QuicTLS and enabled by default in the newly created SSL contexts. SSL_set_quic_method() is used to clear it, which is required for SSL handshake to work on QUIC connections. Switching context in the ngx_http_ssl_servername() SNI callback overrides SSL options from the new SSL context. This results in the option set again. Fix is to explicitly clear it when switching to another SSL context. Initially reported here (in Russian): http://mailman.nginx.org/pipermail/nginx-ru/2021-November/063989.html
author Sergey Kandaurov <pluknet@nginx.com>
date Tue, 07 Dec 2021 15:49:51 +0300
parents 512c741fa841
children
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/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_SHMTX_H_INCLUDED_
#define _NGX_SHMTX_H_INCLUDED_


#include <ngx_config.h>
#include <ngx_core.h>


typedef struct {
    ngx_atomic_t   lock;
#if (NGX_HAVE_POSIX_SEM)
    ngx_atomic_t   wait;
#endif
} ngx_shmtx_sh_t;


typedef struct {
#if (NGX_HAVE_ATOMIC_OPS)
    ngx_atomic_t  *lock;
#if (NGX_HAVE_POSIX_SEM)
    ngx_atomic_t  *wait;
    ngx_uint_t     semaphore;
    sem_t          sem;
#endif
#else
    ngx_fd_t       fd;
    u_char        *name;
#endif
    ngx_uint_t     spin;
} ngx_shmtx_t;


ngx_int_t ngx_shmtx_create(ngx_shmtx_t *mtx, ngx_shmtx_sh_t *addr,
    u_char *name);
void ngx_shmtx_destroy(ngx_shmtx_t *mtx);
ngx_uint_t ngx_shmtx_trylock(ngx_shmtx_t *mtx);
void ngx_shmtx_lock(ngx_shmtx_t *mtx);
void ngx_shmtx_unlock(ngx_shmtx_t *mtx);
ngx_uint_t ngx_shmtx_force_unlock(ngx_shmtx_t *mtx, ngx_pid_t pid);


#endif /* _NGX_SHMTX_H_INCLUDED_ */