Mercurial > hg > nginx
annotate src/http/ngx_http_variables.h @ 7648:028b16e2798f
Variables: fixed buffer over-read when evaluating "$arg_".
| author | Sergey Kandaurov <pluknet@nginx.com> |
|---|---|
| date | Fri, 08 May 2020 19:19:16 +0300 |
| parents | 2a288909abc6 |
| children | 08b3ea81ff5f |
| rev | line source |
|---|---|
| 499 | 1 |
| 2 /* | |
| 3 * Copyright (C) Igor Sysoev | |
| 4412 | 4 * Copyright (C) Nginx, Inc. |
| 499 | 5 */ |
| 6 | |
| 7 | |
| 8 #ifndef _NGX_HTTP_VARIABLES_H_INCLUDED_ | |
| 9 #define _NGX_HTTP_VARIABLES_H_INCLUDED_ | |
| 10 | |
| 11 | |
| 12 #include <ngx_config.h> | |
| 13 #include <ngx_core.h> | |
| 14 #include <ngx_http.h> | |
| 15 | |
| 16 | |
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17 typedef ngx_variable_value_t ngx_http_variable_value_t; |
| 499 | 18 |
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19 #define ngx_http_variable(v) { sizeof(v) - 1, 1, 0, 0, 0, (u_char *) v } |
| 573 | 20 |
| 499 | 21 typedef struct ngx_http_variable_s ngx_http_variable_t; |
| 22 | |
| 637 | 23 typedef void (*ngx_http_set_variable_pt) (ngx_http_request_t *r, |
| 24 ngx_http_variable_value_t *v, uintptr_t data); | |
| 573 | 25 typedef ngx_int_t (*ngx_http_get_variable_pt) (ngx_http_request_t *r, |
| 26 ngx_http_variable_value_t *v, uintptr_t data); | |
| 499 | 27 |
| 28 | |
| 1565 | 29 #define NGX_HTTP_VAR_CHANGEABLE 1 |
| 30 #define NGX_HTTP_VAR_NOCACHEABLE 2 | |
| 31 #define NGX_HTTP_VAR_INDEXED 4 | |
| 32 #define NGX_HTTP_VAR_NOHASH 8 | |
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33 #define NGX_HTTP_VAR_WEAK 16 |
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34 #define NGX_HTTP_VAR_PREFIX 32 |
| 509 | 35 |
| 36 | |
| 499 | 37 struct ngx_http_variable_s { |
| 573 | 38 ngx_str_t name; /* must be first to build the hash */ |
| 637 | 39 ngx_http_set_variable_pt set_handler; |
| 40 ngx_http_get_variable_pt get_handler; | |
| 573 | 41 uintptr_t data; |
| 42 ngx_uint_t flags; | |
| 43 ngx_uint_t index; | |
| 499 | 44 }; |
| 45 | |
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46 #define ngx_http_null_variable { ngx_null_string, NULL, NULL, 0, 0, 0 } |
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47 |
| 499 | 48 |
| 501 | 49 ngx_http_variable_t *ngx_http_add_variable(ngx_conf_t *cf, ngx_str_t *name, |
| 509 | 50 ngx_uint_t flags); |
| 51 ngx_int_t ngx_http_get_variable_index(ngx_conf_t *cf, ngx_str_t *name); | |
| 499 | 52 ngx_http_variable_value_t *ngx_http_get_indexed_variable(ngx_http_request_t *r, |
| 53 ngx_uint_t index); | |
| 573 | 54 ngx_http_variable_value_t *ngx_http_get_flushed_variable(ngx_http_request_t *r, |
| 55 ngx_uint_t index); | |
| 56 | |
| 499 | 57 ngx_http_variable_value_t *ngx_http_get_variable(ngx_http_request_t *r, |
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58 ngx_str_t *name, ngx_uint_t key); |
| 509 | 59 |
| 1162 | 60 ngx_int_t ngx_http_variable_unknown_header(ngx_http_variable_value_t *v, |
| 61 ngx_str_t *var, ngx_list_part_t *part, size_t prefix); | |
| 62 | |
| 63 | |
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64 #if (NGX_PCRE) |
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65 |
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66 typedef struct { |
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67 ngx_uint_t capture; |
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68 ngx_int_t index; |
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69 } ngx_http_regex_variable_t; |
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70 |
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71 |
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72 typedef struct { |
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73 ngx_regex_t *regex; |
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74 ngx_uint_t ncaptures; |
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75 ngx_http_regex_variable_t *variables; |
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76 ngx_uint_t nvariables; |
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77 ngx_str_t name; |
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78 } ngx_http_regex_t; |
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79 |
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80 |
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81 typedef struct { |
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82 ngx_http_regex_t *regex; |
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83 void *value; |
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84 } ngx_http_map_regex_t; |
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85 |
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86 |
| 3325 | 87 ngx_http_regex_t *ngx_http_regex_compile(ngx_conf_t *cf, |
| 88 ngx_regex_compile_t *rc); | |
| 89 ngx_int_t ngx_http_regex_exec(ngx_http_request_t *r, ngx_http_regex_t *re, | |
| 90 ngx_str_t *s); | |
| 91 | |
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92 #endif |
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93 |
| 3325 | 94 |
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95 typedef struct { |
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96 ngx_hash_combined_t hash; |
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97 #if (NGX_PCRE) |
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98 ngx_http_map_regex_t *regex; |
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99 ngx_uint_t nregex; |
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100 #endif |
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101 } ngx_http_map_t; |
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102 |
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103 |
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104 void *ngx_http_map_find(ngx_http_request_t *r, ngx_http_map_t *map, |
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105 ngx_str_t *match); |
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106 |
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107 |
| 509 | 108 ngx_int_t ngx_http_variables_add_core_vars(ngx_conf_t *cf); |
| 109 ngx_int_t ngx_http_variables_init_vars(ngx_conf_t *cf); | |
| 499 | 110 |
| 111 | |
| 577 | 112 extern ngx_http_variable_value_t ngx_http_variable_null_value; |
| 113 extern ngx_http_variable_value_t ngx_http_variable_true_value; | |
| 114 | |
| 115 | |
| 499 | 116 #endif /* _NGX_HTTP_VARIABLES_H_INCLUDED_ */ |