Realip: fixed duplicate processing on redirects (ticket #1098). Duplicate processing was possible if the address set by realip was listed in set_realip_from, and there was an internal redirect so module context was cleared. This resulted in exactly the same address being set, so this wasn't a problem before the $realip_remote_addr variable was introduced, though now results in incorrect $realip_remote_addr being picked. Fix is to use ngx_http_realip_get_module_ctx() to look up module context even if it was cleared. Additionally, the order of checks was switched to check the configuration first as it looks more effective.

/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_CRYPT_H_INCLUDED_
#define _NGX_CRYPT_H_INCLUDED_


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


ngx_int_t ngx_crypt(ngx_pool_t *pool, u_char *key, u_char *salt,
    u_char **encrypted);


#endif /* _NGX_CRYPT_H_INCLUDED_ */