Mercurial > hg > nginx
annotate src/core/ngx_hash.h @ 8020:f8f6b9fee66a
FastCGI: combining headers with identical names (ticket #1724).
FastCGI responder is expected to receive CGI/1.1 environment variables
in the parameters (see section "6.2 Responder" of the FastCGI specification).
Obviously enough, there cannot be multiple environment variables with
the same name.
Further, CGI specification (RFC 3875, section "4.1.18. Protocol-Specific
Meta-Variables") explicitly requires to combine headers: "If multiple
header fields with the same field-name are received then the server MUST
rewrite them as a single value having the same semantics".
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Mon, 30 May 2022 21:25:27 +0300 |
| parents | d620f497c50f |
| children |
| 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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the "www.example.*" wildcard hash support
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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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parents:
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84 ngx_array_t dns_wc_head; |
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the "www.example.*" wildcard hash support
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parents:
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diff
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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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8ef04207c84f
the "www.example.*" wildcard hash support
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parents:
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diff
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88 ngx_array_t *dns_wc_tail_hash; |
| 593 | 89 } ngx_hash_keys_arrays_t; |
| 90 | |
| 91 | |
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8020
f8f6b9fee66a
FastCGI: combining headers with identical names (ticket #1724).
Maxim Dounin <mdounin@mdounin.ru>
parents:
4412
diff
changeset
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92 typedef struct ngx_table_elt_s ngx_table_elt_t; |
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f8f6b9fee66a
FastCGI: combining headers with identical names (ticket #1724).
Maxim Dounin <mdounin@mdounin.ru>
parents:
4412
diff
changeset
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93 |
|
f8f6b9fee66a
FastCGI: combining headers with identical names (ticket #1724).
Maxim Dounin <mdounin@mdounin.ru>
parents:
4412
diff
changeset
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94 struct ngx_table_elt_s { |
| 589 | 95 ngx_uint_t hash; |
| 96 ngx_str_t key; | |
| 97 ngx_str_t value; | |
| 649 | 98 u_char *lowcase_key; |
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8020
f8f6b9fee66a
FastCGI: combining headers with identical names (ticket #1724).
Maxim Dounin <mdounin@mdounin.ru>
parents:
4412
diff
changeset
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99 ngx_table_elt_t *next; |
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f8f6b9fee66a
FastCGI: combining headers with identical names (ticket #1724).
Maxim Dounin <mdounin@mdounin.ru>
parents:
4412
diff
changeset
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100 }; |
| 507 | 101 |
| 102 | |
| 589 | 103 void *ngx_hash_find(ngx_hash_t *hash, ngx_uint_t key, u_char *name, size_t len); |
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8ef04207c84f
the "www.example.*" wildcard hash support
Igor Sysoev <igor@sysoev.ru>
parents:
1241
diff
changeset
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104 void *ngx_hash_find_wc_head(ngx_hash_wildcard_t *hwc, u_char *name, size_t len); |
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8ef04207c84f
the "www.example.*" wildcard hash support
Igor Sysoev <igor@sysoev.ru>
parents:
1241
diff
changeset
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105 void *ngx_hash_find_wc_tail(ngx_hash_wildcard_t *hwc, u_char *name, size_t len); |
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8ef04207c84f
the "www.example.*" wildcard hash support
Igor Sysoev <igor@sysoev.ru>
parents:
1241
diff
changeset
|
106 void *ngx_hash_find_combined(ngx_hash_combined_t *hash, ngx_uint_t key, |
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8ef04207c84f
the "www.example.*" wildcard hash support
Igor Sysoev <igor@sysoev.ru>
parents:
1241
diff
changeset
|
107 u_char *name, size_t len); |
| 589 | 108 |
| 109 ngx_int_t ngx_hash_init(ngx_hash_init_t *hinit, ngx_hash_key_t *names, | |
| 110 ngx_uint_t nelts); | |
| 111 ngx_int_t ngx_hash_wildcard_init(ngx_hash_init_t *hinit, ngx_hash_key_t *names, | |
| 112 ngx_uint_t nelts); | |
| 113 | |
| 649 | 114 #define ngx_hash(key, c) ((ngx_uint_t) key * 31 + c) |
| 589 | 115 ngx_uint_t ngx_hash_key(u_char *data, size_t len); |
| 116 ngx_uint_t ngx_hash_key_lc(u_char *data, size_t len); | |
| 2136 | 117 ngx_uint_t ngx_hash_strlow(u_char *dst, u_char *src, size_t n); |
| 118 | |
| 589 | 119 |
| 593 | 120 ngx_int_t ngx_hash_keys_array_init(ngx_hash_keys_arrays_t *ha, ngx_uint_t type); |
| 121 ngx_int_t ngx_hash_add_key(ngx_hash_keys_arrays_t *ha, ngx_str_t *key, | |
| 122 void *value, ngx_uint_t flags); | |
| 123 | |
| 589 | 124 |
| 507 | 125 #endif /* _NGX_HASH_H_INCLUDED_ */ |