Core: fixed segfault with too large bucket sizes (ticket #1806). To save memory hash code uses u_short to store resulting bucket sizes, so maximum bucket size is limited to 65536 minus ngx_cacheline_size (larger values will be aligned to 65536 which will overflow u_short). However, there were no checks to enforce this, and using larger bucket sizes resulted in overflows and segmentation faults. Appropriate safety checks to enforce this added to ngx_hash_init().

/*
 * Copyright (C) Roman Arutyunyan
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_PROXY_PROTOCOL_H_INCLUDED_
#define _NGX_PROXY_PROTOCOL_H_INCLUDED_


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


#define NGX_PROXY_PROTOCOL_MAX_HEADER  107


u_char *ngx_proxy_protocol_read(ngx_connection_t *c, u_char *buf,
    u_char *last);
u_char *ngx_proxy_protocol_write(ngx_connection_t *c, u_char *buf,
    u_char *last);


#endif /* _NGX_PROXY_PROTOCOL_H_INCLUDED_ */