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view src/core/ngx_shmtx.h @ 9287:32d4582c484d

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Mail: fixed EXTERNAL to be accepted only if enabled. As originally implemented in 6774:bcb107bb89cd, it wasn't possible to disable the EXTERNAL authentication method: it was always accepted (but not advertised unless enabled). It is, however, believed that it is better to reject attempts to use the disabled method, hence in 6869:b2915d99ee8d an attempt was made to address this. This attempt was insufficient though: it was still possible to use the method as long as initial SASL response was used. With this patch both challenge-response and initial response forms are disabled. Additionally, initial response handling for the PLAIN authentication is removed from ngx_mail_auth_parse(), for consistency and to don't provoke such bugs.
author Maxim Dounin <mdounin@mdounin.ru>
date Mon, 03 Jun 2024 18:03:05 +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_ */