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view src/core/ngx_radix_tree.h @ 5584:0251f2f1dc93

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Disabled redirects to named locations if URI is not set. If something like "error_page 400 @name" is used in a configuration, a request could be passed to a named location without URI set, and this in turn might result in segmentation faults or other bad effects as most of the code assumes URI is set. With this change nginx will catch such configuration problems in ngx_http_named_location() and will stop request processing if URI is not set, returning 500.
author Maxim Dounin <mdounin@mdounin.ru>
date Thu, 27 Feb 2014 20:36:35 +0400
parents 3be3de31d7dd
children
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/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_RADIX_TREE_H_INCLUDED_
#define _NGX_RADIX_TREE_H_INCLUDED_


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


#define NGX_RADIX_NO_VALUE   (uintptr_t) -1

typedef struct ngx_radix_node_s  ngx_radix_node_t;

struct ngx_radix_node_s {
    ngx_radix_node_t  *right;
    ngx_radix_node_t  *left;
    ngx_radix_node_t  *parent;
    uintptr_t          value;
};


typedef struct {
    ngx_radix_node_t  *root;
    ngx_pool_t        *pool;
    ngx_radix_node_t  *free;
    char              *start;
    size_t             size;
} ngx_radix_tree_t;


ngx_radix_tree_t *ngx_radix_tree_create(ngx_pool_t *pool,
    ngx_int_t preallocate);

ngx_int_t ngx_radix32tree_insert(ngx_radix_tree_t *tree,
    uint32_t key, uint32_t mask, uintptr_t value);
ngx_int_t ngx_radix32tree_delete(ngx_radix_tree_t *tree,
    uint32_t key, uint32_t mask);
uintptr_t ngx_radix32tree_find(ngx_radix_tree_t *tree, uint32_t key);

#if (NGX_HAVE_INET6)
ngx_int_t ngx_radix128tree_insert(ngx_radix_tree_t *tree,
    u_char *key, u_char *mask, uintptr_t value);
ngx_int_t ngx_radix128tree_delete(ngx_radix_tree_t *tree,
    u_char *key, u_char *mask);
uintptr_t ngx_radix128tree_find(ngx_radix_tree_t *tree, u_char *key);
#endif


#endif /* _NGX_RADIX_TREE_H_INCLUDED_ */