Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_static_module.c @ 6077:0395f788b080 stable-1.6
Resolver: fixed use-after-free memory access.
In 954867a2f0a6, we switched to using resolver node as the
timer event data, so make sure we do not free resolver node
memory until the corresponding timer is deleted.
author | Ruslan Ermilov <ru@nginx.com> |
---|---|
date | Thu, 20 Nov 2014 15:24:40 +0300 |
parents | 192f54280a7a |
children | b1858fc47e3b |
rev | line source |
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441
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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6 |
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8 #include <ngx_config.h> |
87
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9 #include <ngx_core.h> |
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10 #include <ngx_http.h> |
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11 |
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12 |
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13 static ngx_int_t ngx_http_static_handler(ngx_http_request_t *r); |
681 | 14 static ngx_int_t ngx_http_static_init(ngx_conf_t *cf); |
148
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15 |
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16 |
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17 ngx_http_module_t ngx_http_static_module_ctx = { |
509 | 18 NULL, /* preconfiguration */ |
681 | 19 ngx_http_static_init, /* postconfiguration */ |
177
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20 |
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21 NULL, /* create main configuration */ |
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22 NULL, /* init main configuration */ |
577 | 23 |
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24 NULL, /* create server configuration */ |
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25 NULL, /* merge server configuration */ |
577 | 26 |
1454 | 27 NULL, /* create location configuration */ |
28 NULL /* merge location configuration */ | |
577 | 29 }; |
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30 |
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31 |
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32 ngx_module_t ngx_http_static_module = { |
509 | 33 NGX_MODULE_V1, |
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34 &ngx_http_static_module_ctx, /* module context */ |
1454 | 35 NULL, /* module directives */ |
148
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36 NGX_HTTP_MODULE, /* module type */ |
541 | 37 NULL, /* init master */ |
681 | 38 NULL, /* init module */ |
541 | 39 NULL, /* init process */ |
40 NULL, /* init thread */ | |
41 NULL, /* exit thread */ | |
42 NULL, /* exit process */ | |
43 NULL, /* exit master */ | |
44 NGX_MODULE_V1_PADDING | |
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45 }; |
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46 |
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47 |
509 | 48 static ngx_int_t |
49 ngx_http_static_handler(ngx_http_request_t *r) | |
148
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50 { |
557 | 51 u_char *last, *location; |
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52 size_t root, len; |
1454 | 53 ngx_str_t path; |
557 | 54 ngx_int_t rc; |
55 ngx_uint_t level; | |
56 ngx_log_t *log; | |
57 ngx_buf_t *b; | |
58 ngx_chain_t out; | |
1454 | 59 ngx_open_file_info_t of; |
557 | 60 ngx_http_core_loc_conf_t *clcf; |
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61 |
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62 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD|NGX_HTTP_POST))) { |
639 | 63 return NGX_HTTP_NOT_ALLOWED; |
64 } | |
65 | |
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66 if (r->uri.data[r->uri.len - 1] == '/') { |
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67 return NGX_DECLINED; |
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68 } |
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69 |
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70 log = r->connection->log; |
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71 |
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72 /* |
557 | 73 * ngx_http_map_uri_to_path() allocates memory for terminating '\0' |
74 * so we do not need to reserve memory for '/' for possible redirect | |
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75 */ |
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76 |
773 | 77 last = ngx_http_map_uri_to_path(r, &path, &root, 0); |
557 | 78 if (last == NULL) { |
79 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
400
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80 } |
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81 |
1454 | 82 path.len = last - path.data; |
83 | |
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84 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, |
557 | 85 "http filename: \"%s\"", path.data); |
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86 |
1454 | 87 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
563 | 88 |
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89 ngx_memzero(&of, sizeof(ngx_open_file_info_t)); |
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90 |
3178 | 91 of.read_ahead = clcf->read_ahead; |
2129 | 92 of.directio = clcf->directio; |
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93 of.valid = clcf->open_file_cache_valid; |
1772 | 94 of.min_uses = clcf->open_file_cache_min_uses; |
1454 | 95 of.errors = clcf->open_file_cache_errors; |
1457 | 96 of.events = clcf->open_file_cache_events; |
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97 |
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98 if (ngx_http_set_disable_symlinks(r, clcf, &path, &of) != NGX_OK) { |
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99 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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100 } |
1454 | 101 |
1799 | 102 if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool) |
103 != NGX_OK) | |
104 { | |
1454 | 105 switch (of.err) { |
106 | |
107 case 0: | |
108 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
148
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109 |
1454 | 110 case NGX_ENOENT: |
111 case NGX_ENOTDIR: | |
112 case NGX_ENAMETOOLONG: | |
113 | |
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114 level = NGX_LOG_ERR; |
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115 rc = NGX_HTTP_NOT_FOUND; |
1454 | 116 break; |
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117 |
1454 | 118 case NGX_EACCES: |
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119 #if (NGX_HAVE_OPENAT) |
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120 case NGX_EMLINK: |
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121 case NGX_ELOOP: |
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122 #endif |
1454 | 123 |
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124 level = NGX_LOG_ERR; |
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125 rc = NGX_HTTP_FORBIDDEN; |
1454 | 126 break; |
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127 |
1454 | 128 default: |
129 | |
170
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130 level = NGX_LOG_CRIT; |
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131 rc = NGX_HTTP_INTERNAL_SERVER_ERROR; |
1454 | 132 break; |
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133 } |
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134 |
527 | 135 if (rc != NGX_HTTP_NOT_FOUND || clcf->log_not_found) { |
1454 | 136 ngx_log_error(level, log, of.err, |
2756
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137 "%s \"%s\" failed", of.failed, path.data); |
527 | 138 } |
170
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139 |
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140 return rc; |
148
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141 } |
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142 |
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143 r->root_tested = !r->error_page; |
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144 |
1696 | 145 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, "http static fd: %d", of.fd); |
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146 |
1454 | 147 if (of.is_dir) { |
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148 |
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149 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, log, 0, "http dir"); |
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150 |
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151 ngx_http_clear_location(r); |
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152 |
509 | 153 r->headers_out.location = ngx_palloc(r->pool, sizeof(ngx_table_elt_t)); |
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154 if (r->headers_out.location == NULL) { |
165
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155 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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156 } |
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157 |
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158 len = r->uri.len + 1; |
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159 |
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160 if (!clcf->alias && clcf->root_lengths == NULL && r->args.len == 0) { |
557 | 161 location = path.data + clcf->root.len; |
162 | |
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163 *last = '/'; |
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164 |
557 | 165 } else { |
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166 if (r->args.len) { |
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167 len += r->args.len + 1; |
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168 } |
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169 |
2049 | 170 location = ngx_pnalloc(r->pool, len); |
557 | 171 if (location == NULL) { |
172 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
173 } | |
174 | |
573 | 175 last = ngx_copy(location, r->uri.data, r->uri.len); |
2038
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176 |
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177 *last = '/'; |
557 | 178 |
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179 if (r->args.len) { |
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180 *++last = '?'; |
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181 ngx_memcpy(++last, r->args.data, r->args.len); |
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182 } |
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183 } |
557 | 184 |
509 | 185 /* |
186 * we do not need to set the r->headers_out.location->hash and | |
187 * r->headers_out.location->key fields | |
188 */ | |
201
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189 |
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190 r->headers_out.location->value.len = len; |
557 | 191 r->headers_out.location->value.data = location; |
287
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192 |
148
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193 return NGX_HTTP_MOVED_PERMANENTLY; |
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194 } |
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195 |
461 | 196 #if !(NGX_WIN32) /* the not regular files are probably Unix specific */ |
176
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197 |
1454 | 198 if (!of.is_file) { |
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199 ngx_log_error(NGX_LOG_CRIT, log, 0, |
557 | 200 "\"%s\" is not a regular file", path.data); |
176
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201 |
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202 return NGX_HTTP_NOT_FOUND; |
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203 } |
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204 |
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205 #endif |
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206 |
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207 if (r->method & NGX_HTTP_POST) { |
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208 return NGX_HTTP_NOT_ALLOWED; |
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209 } |
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210 |
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211 rc = ngx_http_discard_request_body(r); |
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212 |
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213 if (rc != NGX_OK) { |
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214 return rc; |
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215 } |
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216 |
509 | 217 log->action = "sending response to client"; |
148
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218 |
201
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219 r->headers_out.status = NGX_HTTP_OK; |
1454 | 220 r->headers_out.content_length_n = of.size; |
221 r->headers_out.last_modified_time = of.mtime; | |
201
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222 |
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223 if (ngx_http_set_etag(r) != NGX_OK) { |
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224 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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225 } |
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226 |
201
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227 if (ngx_http_set_content_type(r) != NGX_OK) { |
200
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228 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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229 } |
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230 |
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231 if (r != r->main && of.size == 0) { |
583 | 232 return ngx_http_send_header(r); |
233 } | |
234 | |
587 | 235 r->allow_ranges = 1; |
236 | |
577 | 237 /* we need to allocate all before the header would be sent */ |
1
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238 |
577 | 239 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); |
240 if (b == NULL) { | |
241 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
242 } | |
26
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243 |
577 | 244 b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t)); |
245 if (b->file == NULL) { | |
246 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
247 } | |
403
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248 |
96
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249 rc = ngx_http_send_header(r); |
143
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250 |
585 | 251 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { |
143
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252 return rc; |
99
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253 } |
96
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254 |
343
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255 b->file_pos = 0; |
1454 | 256 b->file_last = of.size; |
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257 |
577 | 258 b->in_file = b->file_last ? 1: 0; |
597 | 259 b->last_buf = (r == r->main) ? 1: 0; |
577 | 260 b->last_in_chain = 1; |
261 | |
1696 | 262 b->file->fd = of.fd; |
557 | 263 b->file->name = path; |
343
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264 b->file->log = log; |
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265 b->file->directio = of.is_directio; |
343
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266 |
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267 out.buf = b; |
153
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268 out.next = NULL; |
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269 |
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270 return ngx_http_output_filter(r, &out); |
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271 } |
148
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272 |
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273 |
509 | 274 static ngx_int_t |
681 | 275 ngx_http_static_init(ngx_conf_t *cf) |
148
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276 { |
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277 ngx_http_handler_pt *h; |
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278 ngx_http_core_main_conf_t *cmcf; |
396
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279 |
681 | 280 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); |
577 | 281 |
501 | 282 h = ngx_array_push(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers); |
201
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283 if (h == NULL) { |
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284 return NGX_ERROR; |
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285 } |
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286 |
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287 *h = ngx_http_static_handler; |
148
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288 |
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289 return NGX_OK; |
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290 } |