Mercurial > hg > nginx
annotate src/core/ngx_hash.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> |
|---|---|
| date | Thu, 06 Aug 2020 05:02:22 +0300 |
| parents | d620f497c50f |
| children | f8f6b9fee66a |
| rev | line source |
|---|---|
| 507 | 1 |
| 2 /* | |
| 3 * Copyright (C) Igor Sysoev | |
| 4412 | 4 * Copyright (C) Nginx, Inc. |
| 507 | 5 */ |
| 6 | |
| 7 | |
| 8 #ifndef _NGX_HASH_H_INCLUDED_ | |
| 9 #define _NGX_HASH_H_INCLUDED_ | |
| 10 | |
| 11 | |
| 12 #include <ngx_config.h> | |
| 13 #include <ngx_core.h> | |
| 14 | |
| 15 | |
| 16 typedef struct { | |
| 589 | 17 void *value; |
|
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18 u_short len; |
| 589 | 19 u_char name[1]; |
| 20 } ngx_hash_elt_t; | |
| 507 | 21 |
| 589 | 22 |
| 23 typedef struct { | |
| 24 ngx_hash_elt_t **buckets; | |
| 25 ngx_uint_t size; | |
| 507 | 26 } ngx_hash_t; |
| 27 | |
| 28 | |
| 29 typedef struct { | |
| 589 | 30 ngx_hash_t hash; |
| 31 void *value; | |
| 32 } ngx_hash_wildcard_t; | |
| 33 | |
| 34 | |
| 35 typedef struct { | |
| 36 ngx_str_t key; | |
| 37 ngx_uint_t key_hash; | |
| 38 void *value; | |
| 39 } ngx_hash_key_t; | |
| 40 | |
| 41 | |
| 42 typedef ngx_uint_t (*ngx_hash_key_pt) (u_char *data, size_t len); | |
| 43 | |
| 44 | |
| 45 typedef struct { | |
|
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46 ngx_hash_t hash; |
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47 ngx_hash_wildcard_t *wc_head; |
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48 ngx_hash_wildcard_t *wc_tail; |
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49 } ngx_hash_combined_t; |
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50 |
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51 |
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52 typedef struct { |
| 589 | 53 ngx_hash_t *hash; |
| 54 ngx_hash_key_pt key; | |
| 55 | |
| 56 ngx_uint_t max_size; | |
| 57 ngx_uint_t bucket_size; | |
| 58 | |
| 59 char *name; | |
| 60 ngx_pool_t *pool; | |
| 61 ngx_pool_t *temp_pool; | |
| 62 } ngx_hash_init_t; | |
| 63 | |
| 64 | |
| 593 | 65 #define NGX_HASH_SMALL 1 |
| 66 #define NGX_HASH_LARGE 2 | |
| 67 | |
| 68 #define NGX_HASH_LARGE_ASIZE 16384 | |
| 69 #define NGX_HASH_LARGE_HSIZE 10007 | |
| 70 | |
| 71 #define NGX_HASH_WILDCARD_KEY 1 | |
| 597 | 72 #define NGX_HASH_READONLY_KEY 2 |
| 593 | 73 |
| 74 | |
| 75 typedef struct { | |
| 76 ngx_uint_t hsize; | |
| 77 | |
| 78 ngx_pool_t *pool; | |
| 79 ngx_pool_t *temp_pool; | |
| 80 | |
| 81 ngx_array_t keys; | |
| 82 ngx_array_t *keys_hash; | |
| 83 | |
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84 ngx_array_t dns_wc_head; |
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85 ngx_array_t *dns_wc_head_hash; |
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86 |
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87 ngx_array_t dns_wc_tail; |
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88 ngx_array_t *dns_wc_tail_hash; |
| 593 | 89 } ngx_hash_keys_arrays_t; |
| 90 | |
| 91 | |
| 589 | 92 typedef struct { |
| 93 ngx_uint_t hash; | |
| 94 ngx_str_t key; | |
| 95 ngx_str_t value; | |
| 649 | 96 u_char *lowcase_key; |
| 507 | 97 } ngx_table_elt_t; |
| 98 | |
| 99 | |
| 589 | 100 void *ngx_hash_find(ngx_hash_t *hash, ngx_uint_t key, u_char *name, size_t len); |
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101 void *ngx_hash_find_wc_head(ngx_hash_wildcard_t *hwc, u_char *name, size_t len); |
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102 void *ngx_hash_find_wc_tail(ngx_hash_wildcard_t *hwc, u_char *name, size_t len); |
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parents:
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103 void *ngx_hash_find_combined(ngx_hash_combined_t *hash, ngx_uint_t key, |
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104 u_char *name, size_t len); |
| 589 | 105 |
| 106 ngx_int_t ngx_hash_init(ngx_hash_init_t *hinit, ngx_hash_key_t *names, | |
| 107 ngx_uint_t nelts); | |
| 108 ngx_int_t ngx_hash_wildcard_init(ngx_hash_init_t *hinit, ngx_hash_key_t *names, | |
| 109 ngx_uint_t nelts); | |
| 110 | |
| 649 | 111 #define ngx_hash(key, c) ((ngx_uint_t) key * 31 + c) |
| 589 | 112 ngx_uint_t ngx_hash_key(u_char *data, size_t len); |
| 113 ngx_uint_t ngx_hash_key_lc(u_char *data, size_t len); | |
| 2136 | 114 ngx_uint_t ngx_hash_strlow(u_char *dst, u_char *src, size_t n); |
| 115 | |
| 589 | 116 |
| 593 | 117 ngx_int_t ngx_hash_keys_array_init(ngx_hash_keys_arrays_t *ha, ngx_uint_t type); |
| 118 ngx_int_t ngx_hash_add_key(ngx_hash_keys_arrays_t *ha, ngx_str_t *key, | |
| 119 void *value, ngx_uint_t flags); | |
| 120 | |
| 589 | 121 |
| 507 | 122 #endif /* _NGX_HASH_H_INCLUDED_ */ |