Mercurial > hg > nginx
annotate src/core/ngx_rbtree.h @ 7690:8253424d1aff
Added size check to ngx_http_alloc_large_header_buffer().
This ensures that copying won't write more than the buffer size
even if the buffer comes from hc->free and it is smaller than the large
client header buffer size in the virtual host configuration. This might
happen if size of large client header buffers is different in name-based
virtual hosts, similarly to the problem with number of buffers fixed
in 6926:e662cbf1b932.
| author | Maxim Dounin <mdounin@mdounin.ru> |
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| date | Thu, 06 Aug 2020 05:02:22 +0300 |
| parents | e0cc454aafe4 |
| children | 0c5e84096d99 |
| rev | line source |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
| 4412 | 4 * Copyright (C) Nginx, Inc. |
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5 */ |
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8 #ifndef _NGX_RBTREE_H_INCLUDED_ |
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9 #define _NGX_RBTREE_H_INCLUDED_ |
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12 #include <ngx_config.h> |
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13 #include <ngx_core.h> |
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15 |
| 557 | 16 typedef ngx_uint_t ngx_rbtree_key_t; |
| 17 typedef ngx_int_t ngx_rbtree_key_int_t; | |
| 18 | |
| 19 | |
| 559 | 20 typedef struct ngx_rbtree_node_s ngx_rbtree_node_t; |
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21 |
| 559 | 22 struct ngx_rbtree_node_s { |
| 23 ngx_rbtree_key_t key; | |
| 24 ngx_rbtree_node_t *left; | |
| 25 ngx_rbtree_node_t *right; | |
| 26 ngx_rbtree_node_t *parent; | |
| 853 | 27 u_char color; |
| 28 u_char data; | |
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29 }; |
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30 |
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31 |
| 559 | 32 typedef struct ngx_rbtree_s ngx_rbtree_t; |
| 33 | |
| 853 | 34 typedef void (*ngx_rbtree_insert_pt) (ngx_rbtree_node_t *root, |
| 559 | 35 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel); |
| 36 | |
| 37 struct ngx_rbtree_s { | |
| 38 ngx_rbtree_node_t *root; | |
| 39 ngx_rbtree_node_t *sentinel; | |
| 853 | 40 ngx_rbtree_insert_pt insert; |
| 559 | 41 }; |
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43 |
| 1686 | 44 #define ngx_rbtree_init(tree, s, i) \ |
| 45 ngx_rbtree_sentinel_init(s); \ | |
| 46 (tree)->root = s; \ | |
| 47 (tree)->sentinel = s; \ | |
| 48 (tree)->insert = i | |
| 49 | |
| 50 | |
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51 void ngx_rbtree_insert(ngx_rbtree_t *tree, ngx_rbtree_node_t *node); |
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52 void ngx_rbtree_delete(ngx_rbtree_t *tree, ngx_rbtree_node_t *node); |
| 861 | 53 void ngx_rbtree_insert_value(ngx_rbtree_node_t *root, ngx_rbtree_node_t *node, |
| 54 ngx_rbtree_node_t *sentinel); | |
| 853 | 55 void ngx_rbtree_insert_timer_value(ngx_rbtree_node_t *root, |
| 56 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel); | |
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Core: introduced ngx_rbtree_next().
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57 ngx_rbtree_node_t *ngx_rbtree_next(ngx_rbtree_t *tree, |
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58 ngx_rbtree_node_t *node); |
| 559 | 59 |
| 60 | |
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61 #define ngx_rbt_red(node) ((node)->color = 1) |
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62 #define ngx_rbt_black(node) ((node)->color = 0) |
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63 #define ngx_rbt_is_red(node) ((node)->color) |
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64 #define ngx_rbt_is_black(node) (!ngx_rbt_is_red(node)) |
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65 #define ngx_rbt_copy_color(n1, n2) (n1->color = n2->color) |
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66 |
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67 |
| 965 | 68 /* a sentinel must be black */ |
| 69 | |
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70 #define ngx_rbtree_sentinel_init(node) ngx_rbt_black(node) |
| 965 | 71 |
| 72 | |
| 559 | 73 static ngx_inline ngx_rbtree_node_t * |
| 74 ngx_rbtree_min(ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel) | |
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75 { |
| 557 | 76 while (node->left != sentinel) { |
| 77 node = node->left; | |
| 78 } | |
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| 557 | 80 return node; |
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81 } |
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84 #endif /* _NGX_RBTREE_H_INCLUDED_ */ |