Mercurial > hg > nginx
annotate src/http/modules/ngx_http_static_module.c @ 4206:1a94a56a4e5d
Clear old Location header (if any) while adding a new one.
This prevents incorrect behaviour when another redirect is issued within
error_page 302 handler.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Wed, 12 Oct 2011 13:28:03 +0000 |
parents | 84905c7b2aa7 |
children | d620f497c50f |
rev | line source |
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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 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 #include <ngx_http.h> |
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12 static ngx_int_t ngx_http_static_handler(ngx_http_request_t *r); |
681 | 13 static ngx_int_t ngx_http_static_init(ngx_conf_t *cf); |
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14 |
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15 |
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16 ngx_http_module_t ngx_http_static_module_ctx = { |
509 | 17 NULL, /* preconfiguration */ |
681 | 18 ngx_http_static_init, /* postconfiguration */ |
177
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19 |
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20 NULL, /* create main configuration */ |
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21 NULL, /* init main configuration */ |
577 | 22 |
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23 NULL, /* create server configuration */ |
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24 NULL, /* merge server configuration */ |
577 | 25 |
1454 | 26 NULL, /* create location configuration */ |
27 NULL /* merge location configuration */ | |
577 | 28 }; |
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29 |
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30 |
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31 ngx_module_t ngx_http_static_module = { |
509 | 32 NGX_MODULE_V1, |
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33 &ngx_http_static_module_ctx, /* module context */ |
1454 | 34 NULL, /* module directives */ |
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35 NGX_HTTP_MODULE, /* module type */ |
541 | 36 NULL, /* init master */ |
681 | 37 NULL, /* init module */ |
541 | 38 NULL, /* init process */ |
39 NULL, /* init thread */ | |
40 NULL, /* exit thread */ | |
41 NULL, /* exit process */ | |
42 NULL, /* exit master */ | |
43 NGX_MODULE_V1_PADDING | |
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44 }; |
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45 |
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46 |
509 | 47 static ngx_int_t |
48 ngx_http_static_handler(ngx_http_request_t *r) | |
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49 { |
557 | 50 u_char *last, *location; |
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51 size_t root, len; |
1454 | 52 ngx_str_t path; |
557 | 53 ngx_int_t rc; |
54 ngx_uint_t level; | |
55 ngx_log_t *log; | |
56 ngx_buf_t *b; | |
57 ngx_chain_t out; | |
1454 | 58 ngx_open_file_info_t of; |
557 | 59 ngx_http_core_loc_conf_t *clcf; |
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60 |
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61 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD|NGX_HTTP_POST))) { |
639 | 62 return NGX_HTTP_NOT_ALLOWED; |
63 } | |
64 | |
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65 if (r->uri.data[r->uri.len - 1] == '/') { |
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66 return NGX_DECLINED; |
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67 } |
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68 |
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69 log = r->connection->log; |
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70 |
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71 /* |
557 | 72 * ngx_http_map_uri_to_path() allocates memory for terminating '\0' |
73 * so we do not need to reserve memory for '/' for possible redirect | |
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74 */ |
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75 |
773 | 76 last = ngx_http_map_uri_to_path(r, &path, &root, 0); |
557 | 77 if (last == NULL) { |
78 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
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79 } |
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80 |
1454 | 81 path.len = last - path.data; |
82 | |
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83 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, |
557 | 84 "http filename: \"%s\"", path.data); |
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85 |
1454 | 86 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
563 | 87 |
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88 ngx_memzero(&of, sizeof(ngx_open_file_info_t)); |
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89 |
3178 | 90 of.read_ahead = clcf->read_ahead; |
2129 | 91 of.directio = clcf->directio; |
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92 of.valid = clcf->open_file_cache_valid; |
1772 | 93 of.min_uses = clcf->open_file_cache_min_uses; |
1454 | 94 of.errors = clcf->open_file_cache_errors; |
1457 | 95 of.events = clcf->open_file_cache_events; |
1454 | 96 |
1799 | 97 if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool) |
98 != NGX_OK) | |
99 { | |
1454 | 100 switch (of.err) { |
101 | |
102 case 0: | |
103 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
148
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104 |
1454 | 105 case NGX_ENOENT: |
106 case NGX_ENOTDIR: | |
107 case NGX_ENAMETOOLONG: | |
108 | |
170
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109 level = NGX_LOG_ERR; |
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110 rc = NGX_HTTP_NOT_FOUND; |
1454 | 111 break; |
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112 |
1454 | 113 case NGX_EACCES: |
114 | |
170
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115 level = NGX_LOG_ERR; |
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116 rc = NGX_HTTP_FORBIDDEN; |
1454 | 117 break; |
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118 |
1454 | 119 default: |
120 | |
170
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121 level = NGX_LOG_CRIT; |
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122 rc = NGX_HTTP_INTERNAL_SERVER_ERROR; |
1454 | 123 break; |
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124 } |
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125 |
527 | 126 if (rc != NGX_HTTP_NOT_FOUND || clcf->log_not_found) { |
1454 | 127 ngx_log_error(level, log, of.err, |
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128 "%s \"%s\" failed", of.failed, path.data); |
527 | 129 } |
170
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130 |
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131 return rc; |
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132 } |
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133 |
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134 r->root_tested = !r->error_page; |
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135 |
1696 | 136 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, "http static fd: %d", of.fd); |
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137 |
1454 | 138 if (of.is_dir) { |
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139 |
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140 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, log, 0, "http dir"); |
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141 |
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142 ngx_http_clear_location(r); |
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143 |
509 | 144 r->headers_out.location = ngx_palloc(r->pool, sizeof(ngx_table_elt_t)); |
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145 if (r->headers_out.location == NULL) { |
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146 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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147 } |
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148 |
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149 len = r->uri.len + 1; |
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150 |
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151 if (!clcf->alias && clcf->root_lengths == NULL && r->args.len == 0) { |
557 | 152 location = path.data + clcf->root.len; |
153 | |
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154 *last = '/'; |
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155 |
557 | 156 } else { |
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157 if (r->args.len) { |
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158 len += r->args.len + 1; |
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159 } |
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160 |
2049 | 161 location = ngx_pnalloc(r->pool, len); |
557 | 162 if (location == NULL) { |
163 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
164 } | |
165 | |
573 | 166 last = ngx_copy(location, r->uri.data, r->uri.len); |
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167 |
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168 *last = '/'; |
557 | 169 |
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170 if (r->args.len) { |
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171 *++last = '?'; |
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172 ngx_memcpy(++last, r->args.data, r->args.len); |
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173 } |
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174 } |
557 | 175 |
509 | 176 /* |
177 * we do not need to set the r->headers_out.location->hash and | |
178 * r->headers_out.location->key fields | |
179 */ | |
201
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180 |
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181 r->headers_out.location->value.len = len; |
557 | 182 r->headers_out.location->value.data = location; |
287
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183 |
148
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184 return NGX_HTTP_MOVED_PERMANENTLY; |
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185 } |
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186 |
461 | 187 #if !(NGX_WIN32) /* the not regular files are probably Unix specific */ |
176
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188 |
1454 | 189 if (!of.is_file) { |
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190 ngx_log_error(NGX_LOG_CRIT, log, 0, |
557 | 191 "\"%s\" is not a regular file", path.data); |
176
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192 |
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193 return NGX_HTTP_NOT_FOUND; |
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194 } |
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195 |
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196 #endif |
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197 |
2182
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198 if (r->method & NGX_HTTP_POST) { |
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199 return NGX_HTTP_NOT_ALLOWED; |
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200 } |
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201 |
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202 rc = ngx_http_discard_request_body(r); |
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203 |
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204 if (rc != NGX_OK) { |
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205 return rc; |
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206 } |
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207 |
509 | 208 log->action = "sending response to client"; |
148
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209 |
201
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210 r->headers_out.status = NGX_HTTP_OK; |
1454 | 211 r->headers_out.content_length_n = of.size; |
212 r->headers_out.last_modified_time = of.mtime; | |
201
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213 |
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214 if (ngx_http_set_content_type(r) != NGX_OK) { |
200
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215 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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216 } |
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217 |
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218 if (r != r->main && of.size == 0) { |
583 | 219 return ngx_http_send_header(r); |
220 } | |
221 | |
587 | 222 r->allow_ranges = 1; |
223 | |
577 | 224 /* we need to allocate all before the header would be sent */ |
1
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225 |
577 | 226 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); |
227 if (b == NULL) { | |
228 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
229 } | |
26
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230 |
577 | 231 b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t)); |
232 if (b->file == NULL) { | |
233 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
234 } | |
403
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235 |
96
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236 rc = ngx_http_send_header(r); |
143
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237 |
585 | 238 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { |
143
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239 return rc; |
99
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240 } |
96
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241 |
343
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242 b->file_pos = 0; |
1454 | 243 b->file_last = of.size; |
1
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244 |
577 | 245 b->in_file = b->file_last ? 1: 0; |
597 | 246 b->last_buf = (r == r->main) ? 1: 0; |
577 | 247 b->last_in_chain = 1; |
248 | |
1696 | 249 b->file->fd = of.fd; |
557 | 250 b->file->name = path; |
343
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251 b->file->log = log; |
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252 b->file->directio = of.is_directio; |
343
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253 |
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254 out.buf = b; |
153
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255 out.next = NULL; |
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256 |
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257 return ngx_http_output_filter(r, &out); |
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258 } |
148
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259 |
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260 |
509 | 261 static ngx_int_t |
681 | 262 ngx_http_static_init(ngx_conf_t *cf) |
148
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263 { |
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264 ngx_http_handler_pt *h; |
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265 ngx_http_core_main_conf_t *cmcf; |
396
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266 |
681 | 267 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); |
577 | 268 |
501 | 269 h = ngx_array_push(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers); |
201
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270 if (h == NULL) { |
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271 return NGX_ERROR; |
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272 } |
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273 |
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274 *h = ngx_http_static_handler; |
148
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275 |
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276 return NGX_OK; |
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277 } |