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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #ifndef _NGX_HTTP_VARIABLES_H_INCLUDED_
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8 #define _NGX_HTTP_VARIABLES_H_INCLUDED_
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9
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10
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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13 #include <ngx_event.h>
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14 #include <ngx_http.h>
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15
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16
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509
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17 #define NGX_HTTP_VAR_NOT_FOUND (ngx_http_variable_value_t *) -1
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18
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19
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20 typedef struct {
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21 ngx_uint_t value;
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22 ngx_str_t text;
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23 } ngx_http_variable_value_t;
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24
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25 typedef struct ngx_http_variable_s ngx_http_variable_t;
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26
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27 typedef ngx_http_variable_value_t *
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28 (*ngx_http_get_variable_pt) (ngx_http_request_t *r, uintptr_t data);
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29
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30
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31 #define NGX_HTTP_VAR_CHANGABLE 1
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32 #define NGX_HTTP_VAR_NOCACHABLE 2
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33
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34
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35 struct ngx_http_variable_s {
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36 ngx_str_t name; /* must be first to build the hash */
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37 ngx_http_get_variable_pt handler;
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38 uintptr_t data;
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39 ngx_uint_t flags;
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40 };
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41
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42
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43 ngx_http_variable_t *ngx_http_add_variable(ngx_conf_t *cf, ngx_str_t *name,
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44 ngx_uint_t flags);
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45 ngx_int_t ngx_http_get_variable_index(ngx_conf_t *cf, ngx_str_t *name);
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46 ngx_http_variable_value_t *ngx_http_get_indexed_variable(ngx_http_request_t *r,
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47 ngx_uint_t index);
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48 ngx_http_variable_value_t *ngx_http_get_variable(ngx_http_request_t *r,
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49 ngx_str_t *name);
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50
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51 ngx_int_t ngx_http_variables_add_core_vars(ngx_conf_t *cf);
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52 ngx_int_t ngx_http_variables_init_vars(ngx_conf_t *cf);
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53
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54
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55 #endif /* _NGX_HTTP_VARIABLES_H_INCLUDED_ */
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