annotate src/core/ngx_buf.h @ 506:b9fdcaf2062b NGINX_0_7_65

nginx 0.7.65 *) Security: now nginx/Windows ignores trailing spaces in URI. Thanks to Dan Crowley, Core Security Technologies. *) Security: now nginx/Windows ignores short files names. Thanks to Dan Crowley, Core Security Technologies. *) Change: now the "009" status code is written to an access log for proxied HTTP/0.9 responses. *) Change: now the default buffer size of the "large_client_header_buffers" directive is 8K. Thanks to Andrew Cholakian. *) Change: now default SSL ciphers are "HIGH:!ADH:!MD5". *) Change: now SSLv2 protocol is disabled by default. *) Change: now $host variable value is always low case. *) Feature: the conf/fastcgi.conf for simple FastCGI configurations. *) Feature: now URI part is not required a "proxy_pass" directive if variables are used. *) Feature: the $ssl_session_id variable. *) Bugfix: if a proxied or FastCGI request was internally redirected to another proxied or FastCGI location, then $upstream_response_time variable may have abnormally large value; the bug had appeared in 0.7.63. *) Bugfix: if the "expires modified" set date in the past, then a negative number was set in the "Cache-Control" response header line. Thanks to Alex Kapranoff. *) Bugfix: nginx closed a connection if a cached response had an empty body. Thanks to Piotr Sikora. *) Bugfix: nginx cached a 304 response if there was the "If-None-Match" header line in a proxied request. Thanks to Tim Dettrick and David Kostal. *) Bugfix: nginx did not treat a comma as separator in the "Cache-Control" backend response header line. *) Bugfix: cached HTTP/0.9 responses were handled incorrectly. *) Bugfix: nginx sent gzipped responses to clients those do not support gzip, if "gzip_static on" and "gzip_vary off"; the bug had appeared in 0.8.16. *) Bugfix: nginx always added "Content-Encoding: gzip" response header line in 304 responses sent by ngx_http_gzip_static_module. *) Bugfix: the "!-x" operator did not work. Thanks to Maxim Dounin. *) Bugfix: a segmentation fault might occur in a worker process, if limit_rate was used in HTTPS server. Thanks to Maxim Dounin. *) Bugfix: a segmentation fault might occur in a worker process while $limit_rate logging. Thanks to Maxim Dounin. *) Bugfix: nginx did not support dates in 2038 year on 32-bit platforms; *) Bugfix: nginx/Windows tried to delete a temporary file twice if the file should replace an already existent file. *) Bugfix: nginx/Windows tried to rename a temporary file twice if the file should replace an already existent file. *) Bugfix: nginx/Windows might not create temporary file, a cache file, or "proxy/fastcgi_store"d file if a worker had no enough access rights for top level directories. *) Bugfix: in UTF-8 encoding support by "try_files" directive in nginx/Windows. *) Bugfix: UTF-8 encoding usage in the ngx_http_autoindex_module. Thanks to Maxim Dounin. *) Bugfix: the ngx_http_autoindex_module did not show the trailing slash in links to a directory; the bug had appeared in 0.7.15. *) Bugfix: nginx did not close a log file set by the --error-log-path configuration option; the bug had appeared in 0.7.53. *) Bugfix: "addition_types" directive was incorrectly named "addtion_types". *) Bugfix: invalid request line in $request variable was written in access_log only if error_log was set to "info" or "debug" level.
author Igor Sysoev <http://sysoev.ru>
date Mon, 01 Feb 2010 00:00:00 +0000
parents ed3d382670c7
children
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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7 #ifndef _NGX_BUF_H_INCLUDED_
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8 #define _NGX_BUF_H_INCLUDED_
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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15 typedef void * ngx_buf_tag_t;
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16
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17 typedef struct ngx_buf_s ngx_buf_t;
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19 struct ngx_buf_s {
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20 u_char *pos;
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21 u_char *last;
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22 off_t file_pos;
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23 off_t file_last;
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24
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25 u_char *start; /* start of buffer */
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26 u_char *end; /* end of buffer */
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27 ngx_buf_tag_t tag;
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28 ngx_file_t *file;
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29 ngx_buf_t *shadow;
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32 /* the buf's content could be changed */
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33 unsigned temporary:1;
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34
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35 /*
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36 * the buf's content is in a memory cache or in a read only memory
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37 * and must not be changed
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38 */
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39 unsigned memory:1;
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40
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41 /* the buf's content is mmap()ed and must not be changed */
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42 unsigned mmap:1;
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43
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44 unsigned recycled:1;
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45 unsigned in_file:1;
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46 unsigned flush:1;
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47 unsigned sync:1;
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48 unsigned last_buf:1;
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49 unsigned last_in_chain:1;
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51 unsigned last_shadow:1;
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52 unsigned temp_file:1;
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53
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54 /* STUB */ int num;
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55 };
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56
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57
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58 struct ngx_chain_s {
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59 ngx_buf_t *buf;
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60 ngx_chain_t *next;
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61 };
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64 typedef struct {
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65 ngx_int_t num;
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66 size_t size;
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67 } ngx_bufs_t;
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70 typedef ngx_int_t (*ngx_output_chain_filter_pt)(void *ctx, ngx_chain_t *in);
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72 typedef struct {
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73 ngx_buf_t *buf;
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74 ngx_chain_t *in;
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75 ngx_chain_t *free;
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76 ngx_chain_t *busy;
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77
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78 unsigned sendfile:1;
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79 unsigned directio:1;
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80 #if (NGX_HAVE_ALIGNED_DIRECTIO)
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81 unsigned unaligned:1;
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82 #endif
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83 unsigned need_in_memory:1;
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84 unsigned need_in_temp:1;
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85
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86 ngx_pool_t *pool;
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87 ngx_int_t allocated;
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88 ngx_bufs_t bufs;
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89 ngx_buf_tag_t tag;
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90
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91 ngx_output_chain_filter_pt output_filter;
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92 void *filter_ctx;
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93 } ngx_output_chain_ctx_t;
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94
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95
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96 typedef struct {
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97 ngx_chain_t *out;
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98 ngx_chain_t **last;
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99 ngx_connection_t *connection;
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100 ngx_pool_t *pool;
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101 off_t limit;
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102 } ngx_chain_writer_ctx_t;
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103
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104
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105 #define NGX_CHAIN_ERROR (ngx_chain_t *) NGX_ERROR
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107
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108 #define ngx_buf_in_memory(b) (b->temporary || b->memory || b->mmap)
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109 #define ngx_buf_in_memory_only(b) (ngx_buf_in_memory(b) && !b->in_file)
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110
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111 #define ngx_buf_special(b) \
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112 ((b->flush || b->last_buf || b->sync) \
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113 && !ngx_buf_in_memory(b) && !b->in_file)
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114
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115 #define ngx_buf_sync_only(b) \
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116 (b->sync \
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117 && !ngx_buf_in_memory(b) && !b->in_file && !b->flush && !b->last_buf)
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118
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119 #define ngx_buf_size(b) \
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120 (ngx_buf_in_memory(b) ? (off_t) (b->last - b->pos): \
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121 (b->file_last - b->file_pos))
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122
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123 ngx_buf_t *ngx_create_temp_buf(ngx_pool_t *pool, size_t size);
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124 ngx_chain_t *ngx_create_chain_of_bufs(ngx_pool_t *pool, ngx_bufs_t *bufs);
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125
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126
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127 #define ngx_alloc_buf(pool) ngx_palloc(pool, sizeof(ngx_buf_t))
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128 #define ngx_calloc_buf(pool) ngx_pcalloc(pool, sizeof(ngx_buf_t))
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129
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130 ngx_chain_t *ngx_alloc_chain_link(ngx_pool_t *pool);
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131 #define ngx_free_chain(pool, cl) \
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132 cl->next = pool->chain; \
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133 pool->chain = cl
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134
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135
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136
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137 ngx_int_t ngx_output_chain(ngx_output_chain_ctx_t *ctx, ngx_chain_t *in);
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Igor Sysoev <http://sysoev.ru>
parents: 22
diff changeset
138 ngx_int_t ngx_chain_writer(void *ctx, ngx_chain_t *in);
0
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
139
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
140 ngx_int_t ngx_chain_add_copy(ngx_pool_t *pool, ngx_chain_t **chain,
48
6cfc63e68377 nginx 0.1.24
Igor Sysoev <http://sysoev.ru>
parents: 28
diff changeset
141 ngx_chain_t *in);
130
82d695e3d662 nginx 0.3.12
Igor Sysoev <http://sysoev.ru>
parents: 58
diff changeset
142 ngx_chain_t *ngx_chain_get_free_buf(ngx_pool_t *p, ngx_chain_t **free);
0
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
143 void ngx_chain_update_chains(ngx_chain_t **free, ngx_chain_t **busy,
48
6cfc63e68377 nginx 0.1.24
Igor Sysoev <http://sysoev.ru>
parents: 28
diff changeset
144 ngx_chain_t **out, ngx_buf_tag_t tag);
0
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
145
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
146
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
147 #endif /* _NGX_BUF_H_INCLUDED_ */