Mercurial > hg > nginx

annotate src/http/ngx_http_cache.h @ 6075:7fcfe113827d stable-1.6

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Fixed possible buffer overrun in "too long header line" logging. Additionally, ellipsis now always added to make it clear that the header logged is incomplete. Reported by Daniil Bondarev.
author Maxim Dounin <mdounin@mdounin.ru>
date Wed, 08 Oct 2014 17:16:04 +0400
parents 43ccaf8e8728
children 2fe1967f8854
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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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8 #ifndef _NGX_HTTP_CACHE_H_INCLUDED_
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9 #define _NGX_HTTP_CACHE_H_INCLUDED_
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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_http.h>
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16
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17 #define NGX_HTTP_CACHE_MISS 1
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18 #define NGX_HTTP_CACHE_BYPASS 2
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19 #define NGX_HTTP_CACHE_EXPIRED 3
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20 #define NGX_HTTP_CACHE_STALE 4
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21 #define NGX_HTTP_CACHE_UPDATING 5
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22 #define NGX_HTTP_CACHE_REVALIDATED 6
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23 #define NGX_HTTP_CACHE_HIT 7
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24 #define NGX_HTTP_CACHE_SCARCE 8
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25
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26 #define NGX_HTTP_CACHE_KEY_LEN 16
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29 typedef struct {
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30 ngx_uint_t status;
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31 time_t valid;
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32 } ngx_http_cache_valid_t;
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33
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34
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35 typedef struct {
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36 ngx_rbtree_node_t node;
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37 ngx_queue_t queue;
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38
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39 u_char key[NGX_HTTP_CACHE_KEY_LEN
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40 - sizeof(ngx_rbtree_key_t)];
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41
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42 unsigned count:20;
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43 unsigned uses:10;
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44 unsigned valid_msec:10;
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45 unsigned error:10;
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46 unsigned exists:1;
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47 unsigned updating:1;
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48 unsigned deleting:1;
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49 /* 11 unused bits */
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50
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51 ngx_file_uniq_t uniq;
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52 time_t expire;
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53 time_t valid_sec;
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54 size_t body_start;
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55 off_t fs_size;
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56 } ngx_http_file_cache_node_t;
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57
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58
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59 struct ngx_http_cache_s {
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60 ngx_file_t file;
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61 ngx_array_t keys;
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62 uint32_t crc32;
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63 u_char key[NGX_HTTP_CACHE_KEY_LEN];
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64
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65 ngx_file_uniq_t uniq;
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66 time_t valid_sec;
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67 time_t last_modified;
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68 time_t date;
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69
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70 size_t header_start;
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71 size_t body_start;
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72 off_t length;
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73 off_t fs_size;
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74
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75 ngx_uint_t min_uses;
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76 ngx_uint_t error;
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77 ngx_uint_t valid_msec;
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78
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79 ngx_buf_t *buf;
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80
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81 ngx_http_file_cache_t *file_cache;
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82 ngx_http_file_cache_node_t *node;
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83
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84 ngx_msec_t lock_timeout;
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85 ngx_msec_t wait_time;
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86
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87 ngx_event_t wait_event;
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88
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89 unsigned lock:1;
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90 unsigned waiting:1;
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91
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92 unsigned updated:1;
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93 unsigned updating:1;
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94 unsigned exists:1;
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95 unsigned temp_file:1;
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96 };
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98
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99 typedef struct {
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100 time_t valid_sec;
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101 time_t last_modified;
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102 time_t date;
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103 uint32_t crc32;
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104 u_short valid_msec;
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105 u_short header_start;
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106 u_short body_start;
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107 } ngx_http_file_cache_header_t;
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108
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109
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110 typedef struct {
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111 ngx_rbtree_t rbtree;
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112 ngx_rbtree_node_t sentinel;
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113 ngx_queue_t queue;
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114 ngx_atomic_t cold;
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115 ngx_atomic_t loading;
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116 off_t size;
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117 } ngx_http_file_cache_sh_t;
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118
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119
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120 struct ngx_http_file_cache_s {
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121 ngx_http_file_cache_sh_t *sh;
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122 ngx_slab_pool_t *shpool;
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123
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124 ngx_path_t *path;
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125
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126 off_t max_size;
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127 size_t bsize;
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128
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129 time_t inactive;
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130
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131 ngx_uint_t files;
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132 ngx_uint_t loader_files;
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133 ngx_msec_t last;
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134 ngx_msec_t loader_sleep;
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135 ngx_msec_t loader_threshold;
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Igor Sysoev <igor@sysoev.ru>
parents: 200
diff changeset
136
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137 ngx_shm_zone_t *shm_zone;
3a8a53c0c42f a prelimiary proxy cache support
Igor Sysoev <igor@sysoev.ru>
parents: 477
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138 };
200
abeaebe0a33c nginx-0.0.1-2003-11-28-20:41:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 199
diff changeset
139
197
0b81c7a0b133 nginx-0.0.1-2003-11-27-10:45:22 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
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140
3698
d11227f0107f rename ngx_http_file_cache_create() to ngx_http_file_cache_new()
Igor Sysoev <igor@sysoev.ru>
parents: 3697
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141 ngx_int_t ngx_http_file_cache_new(ngx_http_request_t *r);
3699
b0a0686a85bb proxy_cache_pass, fastcgi_cache_bypass, uwsgi_cache_bypass, scgi_cache_bypass
Igor Sysoev <igor@sysoev.ru>
parents: 3698
diff changeset
142 ngx_int_t ngx_http_file_cache_create(ngx_http_request_t *r);
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parents: 477
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143 void ngx_http_file_cache_create_key(ngx_http_request_t *r);
3a8a53c0c42f a prelimiary proxy cache support
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parents: 477
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144 ngx_int_t ngx_http_file_cache_open(ngx_http_request_t *r);
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parents: 477
diff changeset
145 void ngx_http_file_cache_set_header(ngx_http_request_t *r, u_char *buf);
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parents: 477
diff changeset
146 void ngx_http_file_cache_update(ngx_http_request_t *r, ngx_temp_file_t *tf);
5441
43ccaf8e8728 Upstream: cache revalidation with conditional requests.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4412
diff changeset
147 void ngx_http_file_cache_update_header(ngx_http_request_t *r);
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parents: 477
diff changeset
148 ngx_int_t ngx_http_cache_send(ngx_http_request_t *);
3711
ce6ba077c270 several changes in cache cleanup handling:
Igor Sysoev <igor@sysoev.ru>
parents: 3699
diff changeset
149 void ngx_http_file_cache_free(ngx_http_cache_t *c, ngx_temp_file_t *tf);
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150 time_t ngx_http_file_cache_valid(ngx_array_t *cache_valid, ngx_uint_t status);
199
a65b630b3a66 nginx-0.0.1-2003-11-28-11:40:40 import
Igor Sysoev <igor@sysoev.ru>
parents: 197
diff changeset
151
2592
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Igor Sysoev <igor@sysoev.ru>
parents: 477
diff changeset
152 char *ngx_http_file_cache_set_slot(ngx_conf_t *cf, ngx_command_t *cmd,
3a8a53c0c42f a prelimiary proxy cache support
Igor Sysoev <igor@sysoev.ru>
parents: 477
diff changeset
153 void *conf);
3a8a53c0c42f a prelimiary proxy cache support
Igor Sysoev <igor@sysoev.ru>
parents: 477
diff changeset
154 char *ngx_http_file_cache_valid_set_slot(ngx_conf_t *cf, ngx_command_t *cmd,
3a8a53c0c42f a prelimiary proxy cache support
Igor Sysoev <igor@sysoev.ru>
parents: 477
diff changeset
155 void *conf);
469
2ff194b74f1e nginx-0.1.9-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
156
3526
62a4fd1e6e2c proxy_no_cache and fastcgi_no_cache
Igor Sysoev <igor@sysoev.ru>
parents: 3052
diff changeset
157
2952
0998606fbfd4 $upstream_cache_status
Igor Sysoev <igor@sysoev.ru>
parents: 2927
diff changeset
158 extern ngx_str_t ngx_http_cache_status[];
0998606fbfd4 $upstream_cache_status
Igor Sysoev <igor@sysoev.ru>
parents: 2927
diff changeset
159
199
a65b630b3a66 nginx-0.0.1-2003-11-28-11:40:40 import
Igor Sysoev <igor@sysoev.ru>
parents: 197
diff changeset
160
170
c42be4185301 nginx-0.0.1-2003-11-03-01:56:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
161 #endif /* _NGX_HTTP_CACHE_H_INCLUDED_ */