1 2 /* 3 * Copyright (C) Igor Sysoev 4 * Copyright (C) Nginx, Inc. 5 */ 6 7 8 #ifndef _NGX_STREAM_VARIABLES_H_INCLUDED_ 9 #define _NGX_STREAM_VARIABLES_H_INCLUDED_ 10 11 12 #include <ngx_config.h> 13 #include <ngx_core.h> 14 #include <ngx_stream.h> 15 16 17 typedef ngx_variable_value_t ngx_stream_variable_value_t; 18 19 #define ngx_stream_variable(v) { sizeof(v) - 1, 1, 0, 0, 0, (u_char *) v } 20 21 typedef struct ngx_stream_variable_s ngx_stream_variable_t; 22 23 typedef void (*ngx_stream_set_variable_pt) (ngx_stream_session_t *s, 24 ngx_stream_variable_value_t *v, uintptr_t data); 25 typedef ngx_int_t (*ngx_stream_get_variable_pt) (ngx_stream_session_t *s, 26 ngx_stream_variable_value_t *v, uintptr_t data); 27 28 29 #define NGX_STREAM_VAR_CHANGEABLE 1 30 #define NGX_STREAM_VAR_NOCACHEABLE 2 31 #define NGX_STREAM_VAR_INDEXED 4 32 #define NGX_STREAM_VAR_NOHASH 8 33 #define NGX_STREAM_VAR_WEAK 16 34 #define NGX_STREAM_VAR_PREFIX 32 35 36 37 struct ngx_stream_variable_s { 38 ngx_str_t name; /* must be first to build the hash */ 39 ngx_stream_set_variable_pt set_handler; 40 ngx_stream_get_variable_pt get_handler; 41 uintptr_t data; 42 ngx_uint_t flags; 43 ngx_uint_t index; 44 }; 45 46 #define ngx_stream_null_variable { ngx_null_string, NULL, NULL, 0, 0, 0 } 47 48 49 ngx_stream_variable_t *ngx_stream_add_variable(ngx_conf_t *cf, ngx_str_t *name, 50 ngx_uint_t flags); 51 ngx_int_t ngx_stream_get_variable_index(ngx_conf_t *cf, ngx_str_t *name); 52 ngx_stream_variable_value_t *ngx_stream_get_indexed_variable( 53 ngx_stream_session_t *s, ngx_uint_t index); 54 ngx_stream_variable_value_t *ngx_stream_get_flushed_variable( 55 ngx_stream_session_t *s, ngx_uint_t index); 56 57 ngx_stream_variable_value_t *ngx_stream_get_variable(ngx_stream_session_t *s, 58 ngx_str_t *name, ngx_uint_t key); 59 60 61 #if (NGX_PCRE) 62 63 typedef struct { 64 ngx_uint_t capture; 65 ngx_int_t index; 66 } ngx_stream_regex_variable_t; 67 68 69 typedef struct { 70 ngx_regex_t *regex; 71 ngx_uint_t ncaptures; 72 ngx_stream_regex_variable_t *variables; 73 ngx_uint_t nvariables; 74 ngx_str_t name; 75 } ngx_stream_regex_t; 76 77 78 typedef struct { 79 ngx_stream_regex_t *regex; 80 void *value; 81 } ngx_stream_map_regex_t; 82 83 84 ngx_stream_regex_t *ngx_stream_regex_compile(ngx_conf_t *cf, 85 ngx_regex_compile_t *rc); 86 ngx_int_t ngx_stream_regex_exec(ngx_stream_session_t *s, ngx_stream_regex_t *re, 87 ngx_str_t *str); 88 89 #endif 90 91 92 typedef struct { 93 ngx_hash_combined_t hash; 94 #if (NGX_PCRE) 95 ngx_stream_map_regex_t *regex; 96 ngx_uint_t nregex; 97 #endif 98 } ngx_stream_map_t; 99 100 101 void *ngx_stream_map_find(ngx_stream_session_t *s, ngx_stream_map_t *map, 102 ngx_str_t *match); 103 104 105 ngx_int_t ngx_stream_variables_add_core_vars(ngx_conf_t *cf); 106 ngx_int_t ngx_stream_variables_init_vars(ngx_conf_t *cf); 107 108 109 extern ngx_stream_variable_value_t ngx_stream_variable_null_value; 110 extern ngx_stream_variable_value_t ngx_stream_variable_true_value; 111 112 113 #endif /* _NGX_STREAM_VARIABLES_H_INCLUDED_ */ 114