1
2 /*
3 * Copyright (C) Igor Sysoev
4 */
5
6
7 #ifndef _NGX_HTTP_SCRIPT_H_INCLUDED_
8 #define _NGX_HTTP_SCRIPT_H_INCLUDED_
9
10
11 #include <ngx_config.h>
12 #include <ngx_core.h>
13 #include <ngx_http.h>
14
15
16 typedef struct {
17 u_char *ip;
18 u_char *pos;
19 ngx_http_variable_value_t *sp;
20
21 ngx_str_t buf;
22 ngx_str_t line;
23
24 /* the start of the rewritten arguments */
25 u_char *args;
26
27 unsigned flushed:1;
28 unsigned skip:1;
29 unsigned quote:1;
30 unsigned log:1;
31
32 int *captures;
33 ngx_uint_t ncaptures;
34
35 ngx_int_t status;
36 ngx_http_request_t *request;
37 } ngx_http_script_engine_t;
38
39
40 typedef struct {
41 ngx_conf_t *cf;
42 ngx_str_t *source;
43
44 ngx_array_t **flushes;
45 ngx_array_t **lengths;
46 ngx_array_t **values;
47
48 ngx_uint_t variables;
49 ngx_uint_t ncaptures;
50 ngx_uint_t captures_mask;
51 ngx_uint_t size;
52
53 void *main;
54
55 unsigned compile_args:1;
56 unsigned complete_lengths:1;
57 unsigned complete_values:1;
58 unsigned dup_capture:1;
59
60 unsigned args:1;
61 } ngx_http_script_compile_t;
62
63
64 typedef void (*ngx_http_script_code_pt) (ngx_http_script_engine_t *e);
65 typedef size_t (*ngx_http_script_len_code_pt) (ngx_http_script_engine_t *e);
66
67
68 typedef struct {
69 ngx_http_script_code_pt code;
70 uintptr_t len;
71 } ngx_http_script_copy_code_t;
72
73
74 typedef struct {
75 ngx_http_script_code_pt code;
76 uintptr_t index;
77 } ngx_http_script_var_code_t;
78
79
80 typedef struct {
81 ngx_http_script_code_pt code;
82 ngx_http_set_variable_pt handler;
83 uintptr_t data;
84 } ngx_http_script_var_handler_code_t;
85
86
87 typedef struct {
88 ngx_http_script_code_pt code;
89 uintptr_t n;
90 } ngx_http_script_copy_capture_code_t;
91
92
93 #if (NGX_PCRE)
94
95 typedef struct {
96 ngx_http_script_code_pt code;
97 ngx_regex_t *regex;
98 ngx_array_t *lengths;
99 uintptr_t size;
100 uintptr_t ncaptures;
101 uintptr_t status;
102 uintptr_t next;
103
104 uintptr_t test:1;
105 uintptr_t negative_test:1;
106 uintptr_t uri:1;
107 uintptr_t args:1;
108
109 /* add the r->args to the new arguments */
110 uintptr_t add_args:1;
111
112 uintptr_t redirect:1;
113 uintptr_t break_cycle:1;
114
115 ngx_str_t name;
116 } ngx_http_script_regex_code_t;
117
118
119 typedef struct {
120 ngx_http_script_code_pt code;
121
122 uintptr_t uri:1;
123 uintptr_t args:1;
124
125 /* add the r->args to the new arguments */
126 uintptr_t add_args:1;
127
128 uintptr_t redirect:1;
129 } ngx_http_script_regex_end_code_t;
130
131 #endif
132
133
134 typedef struct {
135 ngx_http_script_code_pt code;
136 uintptr_t status;
137 uintptr_t null;
138 } ngx_http_script_return_code_t;
139
140
141 typedef enum {
142 ngx_http_script_file_plain = 0,
143 ngx_http_script_file_not_plain,
144 ngx_http_script_file_dir,
145 ngx_http_script_file_not_dir,
146 ngx_http_script_file_exists,
147 ngx_http_script_file_not_exists,
148 ngx_http_script_file_exec,
149 ngx_http_script_file_not_exec
150 } ngx_http_script_file_op_e;
151
152
153 typedef struct {
154 ngx_http_script_code_pt code;
155 uintptr_t op;
156 } ngx_http_script_file_code_t;
157
158
159 typedef struct {
160 ngx_http_script_code_pt code;
161 uintptr_t next;
162 void **loc_conf;
163 } ngx_http_script_if_code_t;
164
165
166 typedef struct {
167 ngx_http_script_code_pt code;
168 ngx_array_t *lengths;
169 } ngx_http_script_complex_value_code_t;
170
171
172 typedef struct {
173 ngx_http_script_code_pt code;
174 uintptr_t value;
175 uintptr_t text_len;
176 uintptr_t text_data;
177 } ngx_http_script_value_code_t;
178
179
180 ngx_uint_t ngx_http_script_variables_count(ngx_str_t *value);
181 ngx_int_t ngx_http_script_compile(ngx_http_script_compile_t *sc);
182 u_char *ngx_http_script_run(ngx_http_request_t *r, ngx_str_t *value,
183 void *code_lengths, size_t reserved, void *code_values);
184 void ngx_http_script_flush_no_cacheable_variables(ngx_http_request_t *r,
185 ngx_array_t *indices);
186
187 void *ngx_http_script_start_code(ngx_pool_t *pool, ngx_array_t **codes,
188 size_t size);
189 void *ngx_http_script_add_code(ngx_array_t *codes, size_t size, void *code);
190
191 size_t ngx_http_script_copy_len_code(ngx_http_script_engine_t *e);
192 void ngx_http_script_copy_code(ngx_http_script_engine_t *e);
193 size_t ngx_http_script_copy_var_len_code(ngx_http_script_engine_t *e);
194 void ngx_http_script_copy_var_code(ngx_http_script_engine_t *e);
195 size_t ngx_http_script_copy_capture_len_code(ngx_http_script_engine_t *e);
196 void ngx_http_script_copy_capture_code(ngx_http_script_engine_t *e);
197 void ngx_http_script_start_args_code(ngx_http_script_engine_t *e);
198 #if (NGX_PCRE)
199 void ngx_http_script_regex_start_code(ngx_http_script_engine_t *e);
200 void ngx_http_script_regex_end_code(ngx_http_script_engine_t *e);
201 #endif
202 void ngx_http_script_return_code(ngx_http_script_engine_t *e);
203 void ngx_http_script_break_code(ngx_http_script_engine_t *e);
204 void ngx_http_script_if_code(ngx_http_script_engine_t *e);
205 void ngx_http_script_equal_code(ngx_http_script_engine_t *e);
206 void ngx_http_script_not_equal_code(ngx_http_script_engine_t *e);
207 void ngx_http_script_file_code(ngx_http_script_engine_t *e);
208 void ngx_http_script_complex_value_code(ngx_http_script_engine_t *e);
209 void ngx_http_script_value_code(ngx_http_script_engine_t *e);
210 void ngx_http_script_set_var_code(ngx_http_script_engine_t *e);
211 void ngx_http_script_var_set_handler_code(ngx_http_script_engine_t *e);
212 void ngx_http_script_var_code(ngx_http_script_engine_t *e);
213 void ngx_http_script_nop_code(ngx_http_script_engine_t *e);
214
215
216 #endif /* _NGX_HTTP_SCRIPT_H_INCLUDED_ */
217
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