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6607
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 * Copyright (C) Nginx, Inc.
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5 */
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6
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7
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8 #ifndef _NGX_STREAM_VARIABLES_H_INCLUDED_
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9 #define _NGX_STREAM_VARIABLES_H_INCLUDED_
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10
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11
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12 #include <ngx_config.h>
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13 #include <ngx_core.h>
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14 #include <ngx_stream.h>
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15
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16
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17 typedef ngx_variable_value_t ngx_stream_variable_value_t;
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18
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19 #define ngx_stream_variable(v) { sizeof(v) - 1, 1, 0, 0, 0, (u_char *) v }
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20
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21 typedef struct ngx_stream_variable_s ngx_stream_variable_t;
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22
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23 typedef void (*ngx_stream_set_variable_pt) (ngx_stream_session_t *s,
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24 ngx_stream_variable_value_t *v, uintptr_t data);
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25 typedef ngx_int_t (*ngx_stream_get_variable_pt) (ngx_stream_session_t *s,
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26 ngx_stream_variable_value_t *v, uintptr_t data);
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27
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28
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29 #define NGX_STREAM_VAR_CHANGEABLE 1
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30 #define NGX_STREAM_VAR_NOCACHEABLE 2
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31 #define NGX_STREAM_VAR_INDEXED 4
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32 #define NGX_STREAM_VAR_NOHASH 8
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33
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34
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35 struct ngx_stream_variable_s {
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36 ngx_str_t name; /* must be first to build the hash */
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37 ngx_stream_set_variable_pt set_handler;
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38 ngx_stream_get_variable_pt get_handler;
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39 uintptr_t data;
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40 ngx_uint_t flags;
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41 ngx_uint_t index;
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42 };
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43
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44
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45 ngx_stream_variable_t *ngx_stream_add_variable(ngx_conf_t *cf, ngx_str_t *name,
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46 ngx_uint_t flags);
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47 ngx_int_t ngx_stream_get_variable_index(ngx_conf_t *cf, ngx_str_t *name);
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48 ngx_stream_variable_value_t *ngx_stream_get_indexed_variable(
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49 ngx_stream_session_t *s, ngx_uint_t index);
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50 ngx_stream_variable_value_t *ngx_stream_get_flushed_variable(
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51 ngx_stream_session_t *s, ngx_uint_t index);
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52
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53 ngx_stream_variable_value_t *ngx_stream_get_variable(ngx_stream_session_t *s,
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54 ngx_str_t *name, ngx_uint_t key);
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55
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56
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57 #if (NGX_PCRE)
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58
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59 typedef struct {
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60 ngx_uint_t capture;
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61 ngx_int_t index;
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62 } ngx_stream_regex_variable_t;
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63
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64
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65 typedef struct {
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66 ngx_regex_t *regex;
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67 ngx_uint_t ncaptures;
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68 ngx_stream_regex_variable_t *variables;
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69 ngx_uint_t nvariables;
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70 ngx_str_t name;
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71 } ngx_stream_regex_t;
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72
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73
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74 typedef struct {
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75 ngx_stream_regex_t *regex;
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76 void *value;
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77 } ngx_stream_map_regex_t;
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78
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79
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80 ngx_stream_regex_t *ngx_stream_regex_compile(ngx_conf_t *cf,
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81 ngx_regex_compile_t *rc);
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82 ngx_int_t ngx_stream_regex_exec(ngx_stream_session_t *s, ngx_stream_regex_t *re,
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83 ngx_str_t *str);
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84
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85 #endif
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86
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87
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88 typedef struct {
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89 ngx_hash_combined_t hash;
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90 #if (NGX_PCRE)
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91 ngx_stream_map_regex_t *regex;
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92 ngx_uint_t nregex;
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93 #endif
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94 } ngx_stream_map_t;
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95
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96
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97 void *ngx_stream_map_find(ngx_stream_session_t *s, ngx_stream_map_t *map,
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98 ngx_str_t *match);
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99
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100
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101 ngx_int_t ngx_stream_variables_add_core_vars(ngx_conf_t *cf);
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102 ngx_int_t ngx_stream_variables_init_vars(ngx_conf_t *cf);
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103
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104
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105 extern ngx_stream_variable_value_t ngx_stream_variable_null_value;
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106 extern ngx_stream_variable_value_t ngx_stream_variable_true_value;
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107
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108
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109 #endif /* _NGX_STREAM_VARIABLES_H_INCLUDED_ */
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