Mercurial > hg > nginx
annotate src/http/ngx_http_variables.h @ 4162:fb1375e8b68c stable-1.0
Merging r4036, r4055, r4056, r4057, r4058, r4059, r4060, r4061, r4062, r4063,
r4064:
Ranges related fixes:
The "max_ranges" directive.
"max_ranges 0" disables ranges support at all,
"max_ranges 1" allows the single range, etc.
By default number of ranges is unlimited, to be precise, 2^31-1.
If client requests more ranges than "max_ranges" permits,
nginx disables ranges and returns just the source response.
If total size of all ranges is greater than source response size,
then nginx disables ranges and returns just the source response.
This fix should not affect well-behaving applications but will defeat
DoS attempts exploiting malicious byte ranges.
Now unsatisfiable ranges are processed according to RFC 2616.
author | Igor Sysoev <igor@sysoev.ru> |
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date | Fri, 30 Sep 2011 14:06:08 +0000 |
parents | fa4612bfb9fa |
children | d620f497c50f |
rev | line source |
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499 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4 */ | |
5 | |
6 | |
7 #ifndef _NGX_HTTP_VARIABLES_H_INCLUDED_ | |
8 #define _NGX_HTTP_VARIABLES_H_INCLUDED_ | |
9 | |
10 | |
11 #include <ngx_config.h> | |
12 #include <ngx_core.h> | |
13 #include <ngx_http.h> | |
14 | |
15 | |
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16 typedef ngx_variable_value_t ngx_http_variable_value_t; |
499 | 17 |
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18 #define ngx_http_variable(v) { sizeof(v) - 1, 1, 0, 0, 0, (u_char *) v } |
573 | 19 |
499 | 20 typedef struct ngx_http_variable_s ngx_http_variable_t; |
21 | |
637 | 22 typedef void (*ngx_http_set_variable_pt) (ngx_http_request_t *r, |
23 ngx_http_variable_value_t *v, uintptr_t data); | |
573 | 24 typedef ngx_int_t (*ngx_http_get_variable_pt) (ngx_http_request_t *r, |
25 ngx_http_variable_value_t *v, uintptr_t data); | |
499 | 26 |
27 | |
1565 | 28 #define NGX_HTTP_VAR_CHANGEABLE 1 |
29 #define NGX_HTTP_VAR_NOCACHEABLE 2 | |
30 #define NGX_HTTP_VAR_INDEXED 4 | |
31 #define NGX_HTTP_VAR_NOHASH 8 | |
509 | 32 |
33 | |
499 | 34 struct ngx_http_variable_s { |
573 | 35 ngx_str_t name; /* must be first to build the hash */ |
637 | 36 ngx_http_set_variable_pt set_handler; |
37 ngx_http_get_variable_pt get_handler; | |
573 | 38 uintptr_t data; |
39 ngx_uint_t flags; | |
40 ngx_uint_t index; | |
499 | 41 }; |
42 | |
43 | |
501 | 44 ngx_http_variable_t *ngx_http_add_variable(ngx_conf_t *cf, ngx_str_t *name, |
509 | 45 ngx_uint_t flags); |
46 ngx_int_t ngx_http_get_variable_index(ngx_conf_t *cf, ngx_str_t *name); | |
499 | 47 ngx_http_variable_value_t *ngx_http_get_indexed_variable(ngx_http_request_t *r, |
48 ngx_uint_t index); | |
573 | 49 ngx_http_variable_value_t *ngx_http_get_flushed_variable(ngx_http_request_t *r, |
50 ngx_uint_t index); | |
51 | |
499 | 52 ngx_http_variable_value_t *ngx_http_get_variable(ngx_http_request_t *r, |
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53 ngx_str_t *name, ngx_uint_t key); |
509 | 54 |
1162 | 55 ngx_int_t ngx_http_variable_unknown_header(ngx_http_variable_value_t *v, |
56 ngx_str_t *var, ngx_list_part_t *part, size_t prefix); | |
57 | |
58 | |
573 | 59 #define ngx_http_clear_variable(r, index) r->variables0[index].text.data = NULL; |
60 | |
61 | |
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62 #if (NGX_PCRE) |
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63 |
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64 typedef struct { |
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65 ngx_uint_t capture; |
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66 ngx_int_t index; |
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67 } ngx_http_regex_variable_t; |
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68 |
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69 |
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70 typedef struct { |
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71 ngx_regex_t *regex; |
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72 ngx_uint_t ncaptures; |
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73 ngx_http_regex_variable_t *variables; |
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74 ngx_uint_t nvariables; |
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75 ngx_str_t name; |
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76 } ngx_http_regex_t; |
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77 |
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78 |
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79 typedef struct { |
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80 ngx_http_regex_t *regex; |
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81 void *value; |
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82 } ngx_http_map_regex_t; |
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83 |
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84 |
3325 | 85 ngx_http_regex_t *ngx_http_regex_compile(ngx_conf_t *cf, |
86 ngx_regex_compile_t *rc); | |
87 ngx_int_t ngx_http_regex_exec(ngx_http_request_t *r, ngx_http_regex_t *re, | |
88 ngx_str_t *s); | |
89 | |
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90 #endif |
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91 |
3325 | 92 |
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93 typedef struct { |
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94 ngx_hash_combined_t hash; |
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95 #if (NGX_PCRE) |
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96 ngx_http_map_regex_t *regex; |
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97 ngx_uint_t nregex; |
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98 #endif |
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99 } ngx_http_map_t; |
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100 |
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101 |
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102 void *ngx_http_map_find(ngx_http_request_t *r, ngx_http_map_t *map, |
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103 ngx_str_t *match); |
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104 |
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105 |
509 | 106 ngx_int_t ngx_http_variables_add_core_vars(ngx_conf_t *cf); |
107 ngx_int_t ngx_http_variables_init_vars(ngx_conf_t *cf); | |
499 | 108 |
109 | |
577 | 110 extern ngx_http_variable_value_t ngx_http_variable_null_value; |
111 extern ngx_http_variable_value_t ngx_http_variable_true_value; | |
112 | |
113 | |
499 | 114 #endif /* _NGX_HTTP_VARIABLES_H_INCLUDED_ */ |