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annotate src/stream/ngx_stream_variables.h @ 6899:d2b2ff157da5

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Variables: generic prefix variables.
author Dmitry Volyntsev <xeioex@nginx.com>
date Tue, 31 Jan 2017 21:19:58 +0300
parents c70b7f4537e1
children 2a288909abc6
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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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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 #define NGX_STREAM_VAR_WEAK 16
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34 #define NGX_STREAM_VAR_PREFIX 32
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35
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36
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37 struct ngx_stream_variable_s {
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38 ngx_str_t name; /* must be first to build the hash */
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39 ngx_stream_set_variable_pt set_handler;
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40 ngx_stream_get_variable_pt get_handler;
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41 uintptr_t data;
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42 ngx_uint_t flags;
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43 ngx_uint_t index;
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44 };
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45
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46
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47 ngx_stream_variable_t *ngx_stream_add_variable(ngx_conf_t *cf, ngx_str_t *name,
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48 ngx_uint_t flags);
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49 ngx_int_t ngx_stream_get_variable_index(ngx_conf_t *cf, ngx_str_t *name);
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50 ngx_stream_variable_value_t *ngx_stream_get_indexed_variable(
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51 ngx_stream_session_t *s, ngx_uint_t index);
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52 ngx_stream_variable_value_t *ngx_stream_get_flushed_variable(
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53 ngx_stream_session_t *s, ngx_uint_t index);
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54
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55 ngx_stream_variable_value_t *ngx_stream_get_variable(ngx_stream_session_t *s,
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56 ngx_str_t *name, ngx_uint_t key);
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57
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58
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59 #if (NGX_PCRE)
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60
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61 typedef struct {
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62 ngx_uint_t capture;
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63 ngx_int_t index;
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64 } ngx_stream_regex_variable_t;
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65
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66
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67 typedef struct {
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68 ngx_regex_t *regex;
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69 ngx_uint_t ncaptures;
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70 ngx_stream_regex_variable_t *variables;
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71 ngx_uint_t nvariables;
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72 ngx_str_t name;
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73 } ngx_stream_regex_t;
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74
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75
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76 typedef struct {
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77 ngx_stream_regex_t *regex;
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78 void *value;
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79 } ngx_stream_map_regex_t;
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80
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81
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82 ngx_stream_regex_t *ngx_stream_regex_compile(ngx_conf_t *cf,
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83 ngx_regex_compile_t *rc);
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84 ngx_int_t ngx_stream_regex_exec(ngx_stream_session_t *s, ngx_stream_regex_t *re,
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85 ngx_str_t *str);
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86
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87 #endif
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88
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89
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90 typedef struct {
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91 ngx_hash_combined_t hash;
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92 #if (NGX_PCRE)
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93 ngx_stream_map_regex_t *regex;
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94 ngx_uint_t nregex;
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95 #endif
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96 } ngx_stream_map_t;
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97
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98
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99 void *ngx_stream_map_find(ngx_stream_session_t *s, ngx_stream_map_t *map,
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100 ngx_str_t *match);
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101
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102
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103 ngx_int_t ngx_stream_variables_add_core_vars(ngx_conf_t *cf);
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104 ngx_int_t ngx_stream_variables_init_vars(ngx_conf_t *cf);
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105
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106
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107 extern ngx_stream_variable_value_t ngx_stream_variable_null_value;
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108 extern ngx_stream_variable_value_t ngx_stream_variable_true_value;
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109
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110
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111 #endif /* _NGX_STREAM_VARIABLES_H_INCLUDED_ */