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_ */
115
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