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ngx_http_ssi_filter_module.h
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1 
2 /*
3  * Copyright (C) Igor Sysoev
4  * Copyright (C) Nginx, Inc.
5  */
6 
7 
8 #ifndef _NGX_HTTP_SSI_FILTER_H_INCLUDED_
9 #define _NGX_HTTP_SSI_FILTER_H_INCLUDED_
10 
11 
12 #include <ngx_config.h>
13 #include <ngx_core.h>
14 #include <ngx_http.h>
15 
16 
17 #define NGX_HTTP_SSI_MAX_PARAMS 16
18 
19 #define NGX_HTTP_SSI_COMMAND_LEN 32
20 #define NGX_HTTP_SSI_PARAM_LEN 32
21 #define NGX_HTTP_SSI_PARAMS_N 4
22 
23 
24 #define NGX_HTTP_SSI_COND_IF 1
25 #define NGX_HTTP_SSI_COND_ELSE 2
26 
27 
28 #define NGX_HTTP_SSI_NO_ENCODING 0
29 #define NGX_HTTP_SSI_URL_ENCODING 1
30 #define NGX_HTTP_SSI_ENTITY_ENCODING 2
31 
32 
33 typedef struct {
34  ngx_hash_t hash;
35  ngx_hash_keys_arrays_t commands;
36 } ngx_http_ssi_main_conf_t;
37 
38 
39 typedef struct {
40  ngx_buf_t *buf;
41 
42  u_char *pos;
43  u_char *copy_start;
44  u_char *copy_end;
45 
46  ngx_uint_t key;
47  ngx_str_t command;
48  ngx_array_t params;
49  ngx_table_elt_t *param;
50  ngx_table_elt_t params_array[NGX_HTTP_SSI_PARAMS_N];
51 
52  ngx_chain_t *in;
53  ngx_chain_t *out;
54  ngx_chain_t **last_out;
55  ngx_chain_t *busy;
56  ngx_chain_t *free;
57 
58  ngx_uint_t state;
59  ngx_uint_t saved_state;
60  size_t saved;
61  size_t looked;
62 
63  size_t value_len;
64 
65  ngx_list_t *variables;
66  ngx_array_t *blocks;
67 
68 #if (NGX_PCRE)
69  ngx_uint_t ncaptures;
70  int *captures;
71  u_char *captures_data;
72 #endif
73 
74  unsigned conditional:2;
75  unsigned encoding:2;
76  unsigned block:1;
77  unsigned output:1;
78  unsigned output_chosen:1;
79 
80  ngx_http_request_t *wait;
81  void *value_buf;
82  ngx_str_t timefmt;
83  ngx_str_t errmsg;
84 } ngx_http_ssi_ctx_t;
85 
86 
87 typedef ngx_int_t (*ngx_http_ssi_command_pt) (ngx_http_request_t *r,
88  ngx_http_ssi_ctx_t *ctx, ngx_str_t **);
89 
90 
91 typedef struct {
92  ngx_str_t name;
93  ngx_uint_t index;
94 
95  unsigned mandatory:1;
96  unsigned multiple:1;
97 } ngx_http_ssi_param_t;
98 
99 
100 typedef struct {
101  ngx_str_t name;
102  ngx_http_ssi_command_pt handler;
103  ngx_http_ssi_param_t *params;
104 
105  unsigned conditional:2;
106  unsigned block:1;
107  unsigned flush:1;
108 } ngx_http_ssi_command_t;
109 
110 
111 extern ngx_module_t ngx_http_ssi_filter_module;
112 
113 
114 #endif /* _NGX_HTTP_SSI_FILTER_H_INCLUDED_ */
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