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comparison src/http/modules/ngx_http_static_module.c @ 58:b55cbf18157e NGINX_0_1_29

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nginx 0.1.29 *) Feature: the ngx_http_ssi_module supports "include virtual" command. *) Feature: the ngx_http_ssi_module supports the condition command like 'if expr="$NAME"' and "else" and "endif" commands. Only one nested level is supported. *) Feature: the ngx_http_ssi_module supports the DATE_LOCAL and DATE_GMT variables and "config timefmt" command. *) Feature: the "ssi_ignore_recycled_buffers" directive. *) Bugfix: the "echo" command did not show the default value for the empty QUERY_STRING variable. *) Change: the ngx_http_proxy_module was rewritten. *) Feature: the "proxy_redirect", "proxy_pass_request_headers", "proxy_pass_request_body", and "proxy_method" directives. *) Feature: the "proxy_set_header" directive. The "proxy_x_var" was canceled and must be replaced with the proxy_set_header directive. *) Change: the "proxy_preserve_host" is canceled and must be replaced with the "proxy_set_header Host $host" and the "proxy_redirect off" directives, the "proxy_set_header Host $host:$proxy_port" directive and the appropriate proxy_redirect directives. *) Change: the "proxy_set_x_real_ip" is canceled and must be replaced with the "proxy_set_header X-Real-IP $remote_addr" directive. *) Change: the "proxy_add_x_forwarded_for" is canceled and must be replaced with the "proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for" directive. *) Change: the "proxy_set_x_url" is canceled and must be replaced with the "proxy_set_header X-URL http://$host:$server_port$request_uri" directive. *) Feature: the "fastcgi_param" directive. *) Change: the "fastcgi_root", "fastcgi_set_var" and "fastcgi_params" directive are canceled and must be replaced with the fastcgi_param directives. *) Feature: the "index" directive can use the variables. *) Feature: the "index" directive can be used at http and server levels. *) Change: the last index only in the "index" directive can be absolute. *) Feature: the "rewrite" directive can use the variables. *) Feature: the "internal" directive. *) Feature: the CONTENT_LENGTH, CONTENT_TYPE, REMOTE_PORT, SERVER_ADDR, SERVER_PORT, SERVER_PROTOCOL, DOCUMENT_ROOT, SERVER_NAME, REQUEST_METHOD, REQUEST_URI, and REMOTE_USER variables. *) Change: nginx now passes the invalid lines in a client request headers or a backend response header. *) Bugfix: if the backend did not transfer response for a long time and the "send_timeout" was less than "proxy_read_timeout", then nginx returned the 408 response. *) Bugfix: the segmentation fault was occurred if the backend sent an invalid line in response header; bug appeared in 0.1.26. *) Bugfix: the segmentation fault may occurred in FastCGI fault tolerance configuration. *) Bugfix: the "expires" directive did not remove the previous "Expires" and "Cache-Control" headers. *) Bugfix: nginx did not take into account trailing dot in "Host" header line. *) Bugfix: the ngx_http_auth_module did not work under Linux. *) Bugfix: the rewrite directive worked incorrectly, if the arguments were in a request. *) Bugfix: nginx could not be built on MacOS X.
author Igor Sysoev <http://sysoev.ru>
date Thu, 12 May 2005 00:00:00 +0400
parents 72eb30262aac
children da9a3b14312d
comparison
equal deleted inserted replaced
57:5df375c55338 58:b55cbf18157e
15 15
16 16
17 static ngx_int_t ngx_http_static_handler(ngx_http_request_t *r); 17 static ngx_int_t ngx_http_static_handler(ngx_http_request_t *r);
18 static void *ngx_http_static_create_loc_conf(ngx_conf_t *cf); 18 static void *ngx_http_static_create_loc_conf(ngx_conf_t *cf);
19 static char *ngx_http_static_merge_loc_conf(ngx_conf_t *cf, 19 static char *ngx_http_static_merge_loc_conf(ngx_conf_t *cf,
20 void *parent, void *child); 20 void *parent, void *child);
21 static ngx_int_t ngx_http_static_init(ngx_cycle_t *cycle); 21 static ngx_int_t ngx_http_static_init(ngx_cycle_t *cycle);
22 22
23 23
24 static ngx_command_t ngx_http_static_commands[] = { 24 static ngx_command_t ngx_http_static_commands[] = {
25 25
36 36
37 ngx_null_command 37 ngx_null_command
38 }; 38 };
39 39
40 40
41
42 ngx_http_module_t ngx_http_static_module_ctx = { 41 ngx_http_module_t ngx_http_static_module_ctx = {
43 NULL, /* pre conf */ 42 NULL, /* preconfiguration */
43 NULL, /* postconfiguration */
44 44
45 NULL, /* create main configuration */ 45 NULL, /* create main configuration */
46 NULL, /* init main configuration */ 46 NULL, /* init main configuration */
47 47
48 NULL, /* create server configuration */ 48 NULL, /* create server configuration */
52 ngx_http_static_merge_loc_conf /* merge location configuration */ 52 ngx_http_static_merge_loc_conf /* merge location configuration */
53 }; 53 };
54 54
55 55
56 ngx_module_t ngx_http_static_module = { 56 ngx_module_t ngx_http_static_module = {
57 NGX_MODULE, 57 NGX_MODULE_V1,
58 &ngx_http_static_module_ctx, /* module context */ 58 &ngx_http_static_module_ctx, /* module context */
59 ngx_http_static_commands, /* module directives */ 59 ngx_http_static_commands, /* module directives */
60 NGX_HTTP_MODULE, /* module type */ 60 NGX_HTTP_MODULE, /* module type */
61 ngx_http_static_init, /* init module */ 61 ngx_http_static_init, /* init module */
62 NULL /* init process */ 62 NULL /* init process */
63 }; 63 };
64 64
65 65
66 static ngx_int_t ngx_http_static_handler(ngx_http_request_t *r) 66 static ngx_int_t
67 ngx_http_static_handler(ngx_http_request_t *r)
67 { 68 {
68 u_char *last; 69 u_char *last;
69 ngx_fd_t fd; 70 ngx_fd_t fd;
70 ngx_int_t rc; 71 ngx_int_t rc;
71 ngx_uint_t level; 72 ngx_uint_t level;
73 ngx_err_t err; 74 ngx_err_t err;
74 ngx_log_t *log; 75 ngx_log_t *log;
75 ngx_buf_t *b; 76 ngx_buf_t *b;
76 ngx_chain_t out; 77 ngx_chain_t out;
77 ngx_file_info_t fi; 78 ngx_file_info_t fi;
78 ngx_http_cleanup_t *file_cleanup; 79 ngx_pool_cleanup_file_t *cln;
79 #if (NGX_HTTP_CACHE)
80 ngx_http_cleanup_t *redirect_cleanup;
81 #endif
82 ngx_http_core_loc_conf_t *clcf; 80 ngx_http_core_loc_conf_t *clcf;
83 #if (NGX_HTTP_CACHE)
84 ngx_http_static_loc_conf_t *slcf;
85 uint32_t file_crc, redirect_crc;
86 ngx_http_cache_t *file, *redirect;
87 #endif
88 81
89 if (r->uri.data[r->uri.len - 1] == '/') { 82 if (r->uri.data[r->uri.len - 1] == '/') {
90 return NGX_DECLINED; 83 return NGX_DECLINED;
91 } 84 }
92 85
102 rc = ngx_http_discard_body(r); 95 rc = ngx_http_discard_body(r);
103 96
104 if (rc != NGX_OK && rc != NGX_AGAIN) { 97 if (rc != NGX_OK && rc != NGX_AGAIN) {
105 return rc; 98 return rc;
106 } 99 }
107
108 #if (NGX_HTTP_CACHE)
109
110 /*
111 * there is a valid cached open file, i.e by the index handler,
112 * and it should be already registered in r->cleanup
113 */
114
115 if (r->cache && !r->cache->expired) {
116 return ngx_http_send_cached(r);
117 }
118
119 #endif
120 100
121 log = r->connection->log; 101 log = r->connection->log;
122 102
123 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); 103 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
124 104
125 /* 105 /*
126 * make a file name, reserve 2 bytes for a trailing '/' 106 * make a file name, reserve 2 bytes for a trailing '/'
127 * in a possible redirect and for the last '\0' 107 * in a possible redirect and for the last '\0'
128 */ 108 */
129 109
130 if (clcf->alias) { 110 if (!clcf->alias) {
111 name.data = ngx_palloc(r->pool, clcf->root.len + r->uri.len + 2);
112 if (name.data == NULL) {
113 return NGX_HTTP_INTERNAL_SERVER_ERROR;
114 }
115
116 location.data = ngx_cpymem(name.data, clcf->root.data, clcf->root.len);
117 last = ngx_cpystrn(location.data, r->uri.data, r->uri.len + 1);
118
119 name.len = last - name.data;
120 location.len = last - location.data + 1;
121
122 } else {
131 name.data = ngx_palloc(r->pool, clcf->root.len + r->uri.len + 2 123 name.data = ngx_palloc(r->pool, clcf->root.len + r->uri.len + 2
132 - clcf->name.len); 124 - clcf->name.len);
133 if (name.data == NULL) { 125 if (name.data == NULL) {
134 return NGX_HTTP_INTERNAL_SERVER_ERROR; 126 return NGX_HTTP_INTERNAL_SERVER_ERROR;
135 } 127 }
145 return NGX_HTTP_INTERNAL_SERVER_ERROR; 137 return NGX_HTTP_INTERNAL_SERVER_ERROR;
146 } 138 }
147 139
148 last = ngx_cpystrn(location.data, r->uri.data, r->uri.len + 1); 140 last = ngx_cpystrn(location.data, r->uri.data, r->uri.len + 1);
149 141
150 #if 0
151 /*
152 * aliases usually have trailling "/",
153 * set it in the start of the possible redirect
154 */
155
156 if (*location.data != '/') {
157 location.data--;
158 }
159 #endif
160
161 location.len = last - location.data + 1;
162
163 } else {
164 name.data = ngx_palloc(r->pool, clcf->root.len + r->uri.len + 2);
165 if (name.data == NULL) {
166 return NGX_HTTP_INTERNAL_SERVER_ERROR;
167 }
168
169 location.data = ngx_cpymem(name.data, clcf->root.data, clcf->root.len);
170 last = ngx_cpystrn(location.data, r->uri.data, r->uri.len + 1);
171
172 name.len = last - name.data;
173 location.len = last - location.data + 1; 142 location.len = last - location.data + 1;
174 } 143 }
175 144
176 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, 145 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
177 "http filename: \"%s\"", name.data); 146 "http filename: \"%s\"", name.data);
178 147
179 148 /* open file */
180 /* allocate cleanups */ 149
181 150 #if (NGX_WIN9X)
182 file_cleanup = ngx_array_push(&r->cleanup); 151
183 if (file_cleanup == NULL) { 152 if (ngx_win32_version < NGX_WIN_NT) {
184 return NGX_HTTP_INTERNAL_SERVER_ERROR; 153
185 } 154 /*
186 file_cleanup->valid = 0; 155 * there is no way to open a file or a directory in Win9X with
187 156 * one syscall because Win9X has no FILE_FLAG_BACKUP_SEMANTICS flag
188 #if (NGX_HTTP_CACHE) 157 * so we need to check its type before the opening
189 158 */
190 slcf = ngx_http_get_module_loc_conf(r, ngx_http_static_module); 159
191 if (slcf->redirect_cache) { 160 if (ngx_file_info(name.data, &fi) == NGX_FILE_ERROR) {
192 redirect_cleanup = ngx_array_push(&r->cleanup); 161 err = ngx_errno;
193 if (redirect_cleanup == NULL) { 162 ngx_log_error(NGX_LOG_ERR, log, err,
194 return NGX_HTTP_INTERNAL_SERVER_ERROR; 163 ngx_file_info_n " \"%s\" failed", name.data);
195 } 164
196 redirect_cleanup->valid = 0; 165 if (err == NGX_ENOENT || err == NGX_ENOTDIR) {
197 166 return NGX_HTTP_NOT_FOUND;
198 } else { 167
199 redirect_cleanup = NULL; 168 } else if (err == NGX_EACCES) {
200 } 169 return NGX_HTTP_FORBIDDEN;
201 170
202 /* look up an open files cache */ 171 } else {
203 172 return NGX_HTTP_INTERNAL_SERVER_ERROR;
204 if (clcf->open_files) { 173 }
205 file = ngx_http_cache_get(clcf->open_files, file_cleanup, 174 }
206 &name, &file_crc); 175
207 176 if (ngx_is_dir(&fi)) {
208 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
209 "http open file cache get: %p", file);
210
211 if (file && !file->expired) {
212 r->cache = file;
213 return ngx_http_send_cached(r);
214 }
215
216 } else {
217 file = NULL;
218 }
219
220
221 /* look up an redirect cache */
222
223 if (slcf->redirect_cache) {
224 redirect = ngx_http_cache_get(slcf->redirect_cache, redirect_cleanup,
225 &name, &redirect_crc);
226
227 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
228 "http redirect cache get: %p", redirect);
229
230 if (redirect && !redirect->expired) {
231
232 /*
233 * We do not copy a cached value so the cache entry is locked
234 * until the end of the request. In a single threaded model
235 * the redirected request should complete before other event
236 * will be processed. In a multithreaded model this locking
237 * should keep more popular redirects in cache.
238 */
239
240 r->headers_out.location = ngx_http_add_header(&r->headers_out, 177 r->headers_out.location = ngx_http_add_header(&r->headers_out,
241 ngx_http_headers_out); 178 ngx_http_headers_out);
242 if (r->headers_out.location == NULL) { 179 if (r->headers_out.location == NULL) {
243 return NGX_HTTP_INTERNAL_SERVER_ERROR; 180 return NGX_HTTP_INTERNAL_SERVER_ERROR;
244 } 181 }
245 182
246 r->headers_out.location->value = redirect->data.value;
247
248 return NGX_HTTP_MOVED_PERMANENTLY;
249 }
250
251 } else {
252 redirect = NULL;
253 }
254
255 #endif
256
257 /* open file */
258
259 #if (NGX_WIN9X)
260
261 /* TODO: redirect cache */
262
263 if (ngx_win32_version < NGX_WIN_NT) {
264
265 /*
266 * there is no way to open a file or a directory in Win9X with
267 * one syscall because Win9X has no FILE_FLAG_BACKUP_SEMANTICS flag
268 * so we need to check its type before the opening
269 */
270
271 if (ngx_file_info(name.data, &fi) == NGX_FILE_ERROR) {
272 err = ngx_errno;
273 ngx_log_error(NGX_LOG_ERR, log, err,
274 ngx_file_info_n " \"%s\" failed", name.data);
275
276 if (err == NGX_ENOENT || err == NGX_ENOTDIR) {
277 return NGX_HTTP_NOT_FOUND;
278
279 } else if (err == NGX_EACCES) {
280 return NGX_HTTP_FORBIDDEN;
281
282 } else {
283 return NGX_HTTP_INTERNAL_SERVER_ERROR;
284 }
285 }
286
287 if (ngx_is_dir(&fi)) {
288 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
289 "HTTP DIR: \"%s\"", name.data);
290
291 r->headers_out.location = ngx_http_add_header(&r->headers_out,
292 ngx_http_headers_out);
293 if (r->headers_out.location == NULL) {
294 return NGX_HTTP_INTERNAL_SERVER_ERROR;
295 }
296
297 *last++ = '/'; 183 *last++ = '/';
298 *last = '\0'; 184 *last = '\0';
299 r->headers_out.location->value.len = last - location; 185 r->headers_out.location->value.len = last - location;
300 r->headers_out.location->value.data = location; 186 r->headers_out.location->value.data = location;
301 187
354 } 240 }
355 241
356 *last++ = '/'; 242 *last++ = '/';
357 *last = '\0'; 243 *last = '\0';
358 244
359 r->headers_out.location = ngx_list_push(&r->headers_out.headers); 245 r->headers_out.location = ngx_palloc(r->pool, sizeof(ngx_table_elt_t));
360 if (r->headers_out.location == NULL) { 246 if (r->headers_out.location == NULL) {
361 return NGX_HTTP_INTERNAL_SERVER_ERROR; 247 return NGX_HTTP_INTERNAL_SERVER_ERROR;
362 } 248 }
363 249
250 /*
251 * we do not need to set the r->headers_out.location->hash and
252 * r->headers_out.location->key fields
253 */
254
364 r->headers_out.location->value = location; 255 r->headers_out.location->value = location;
365
366 #if (NGX_HTTP_CACHE)
367
368 if (slcf->redirect_cache) {
369 if (redirect) {
370 if (location.len == redirect->data.value.len
371 && ngx_memcmp(redirect->data.value.data, location.data,
372 location.len) == 0)
373 {
374 redirect->accessed = ngx_cached_time;
375 redirect->updated = ngx_cached_time;
376
377 /*
378 * we can unlock the cache entry because
379 * we have the local copy anyway
380 */
381
382 ngx_http_cache_unlock(slcf->redirect_cache, redirect, log);
383 redirect_cleanup->valid = 0;
384
385 return NGX_HTTP_MOVED_PERMANENTLY;
386 }
387 }
388
389 location.len++;
390 redirect = ngx_http_cache_alloc(slcf->redirect_cache, redirect,
391 redirect_cleanup,
392 &name, redirect_crc,
393 &location, log);
394 location.len--;
395
396 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
397 "http redirect cache alloc: %p", redirect);
398
399 if (redirect) {
400 redirect->fd = NGX_INVALID_FILE;
401 redirect->accessed = ngx_cached_time;
402 redirect->last_modified = 0;
403 redirect->updated = ngx_cached_time;
404 redirect->memory = 1;
405 ngx_http_cache_unlock(slcf->redirect_cache, redirect, log);
406 redirect_cleanup->valid = 0;
407 }
408
409 }
410
411 #endif
412 256
413 return NGX_HTTP_MOVED_PERMANENTLY; 257 return NGX_HTTP_MOVED_PERMANENTLY;
414 } 258 }
415 259
416 #if !(NGX_WIN32) /* the not regular files are probably Unix specific */ 260 #if !(NGX_WIN32) /* the not regular files are probably Unix specific */
427 return NGX_HTTP_NOT_FOUND; 271 return NGX_HTTP_NOT_FOUND;
428 } 272 }
429 273
430 #endif 274 #endif
431 275
432
433 #if (NGX_HTTP_CACHE)
434
435 if (clcf->open_files) {
436
437 #if (NGX_USE_HTTP_FILE_CACHE_UNIQ)
438
439 if (file && file->uniq == ngx_file_uniq(&fi)) {
440 if (ngx_close_file(fd) == NGX_FILE_ERROR) {
441 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
442 ngx_close_file_n " \"%s\" failed", name.data);
443 }
444 file->accessed = ngx_cached_time;
445 file->updated = ngx_cached_time;
446 file->expired = 0;
447 r->cache = file;
448
449 return ngx_http_send_cached(r);
450
451 } else {
452 if (file) {
453 ngx_http_cache_unlock(clcf->open_files, file, log);
454 file = NULL;
455 }
456
457 file = ngx_http_cache_alloc(clcf->open_files, file,
458 file_cleanup,
459 &name, file_crc, NULL, log);
460 if (file) {
461 file->uniq = ngx_file_uniq(&fi);
462 }
463 }
464
465 #else
466 file = ngx_http_cache_alloc(clcf->open_files, file,
467 file_cleanup,
468 &name, file_crc, NULL, log);
469 #endif
470
471 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
472 "http open file cache alloc: %p", file);
473
474 if (file) {
475 file->fd = fd;
476 file->data.size = ngx_file_size(&fi);
477 file->accessed = ngx_cached_time;
478 file->last_modified = ngx_file_mtime(&fi);
479 file->updated = ngx_cached_time;
480 r->cache = file;
481 }
482
483 return ngx_http_send_cached(r);
484 }
485
486 #endif
487
488 log->action = "sending response to client"; 276 log->action = "sending response to client";
489 277
490 file_cleanup->data.file.fd = fd; 278 cln = ngx_palloc(r->pool, sizeof(ngx_pool_cleanup_file_t));
491 file_cleanup->data.file.name = name.data; 279 if (cln == NULL) {
492 file_cleanup->valid = 1; 280 return NGX_HTTP_INTERNAL_SERVER_ERROR;
493 file_cleanup->cache = 0; 281 }
282
283 cln->fd = fd;
284 cln->name = name.data;
285 cln->log = r->pool->log;
286
287 if (ngx_pool_cleanup_add(r->pool, ngx_pool_cleanup_file, cln) == NULL) {
288 return NGX_HTTP_INTERNAL_SERVER_ERROR;
289 }
494 290
495 r->headers_out.status = NGX_HTTP_OK; 291 r->headers_out.status = NGX_HTTP_OK;
496 r->headers_out.content_length_n = ngx_file_size(&fi); 292 r->headers_out.content_length_n = ngx_file_size(&fi);
497 r->headers_out.last_modified_time = ngx_file_mtime(&fi); 293 r->headers_out.last_modified_time = ngx_file_mtime(&fi);
498 294
530 return rc; 326 return rc;
531 } 327 }
532 328
533 b->in_file = 1; 329 b->in_file = 1;
534 330
535 if (!r->main) { 331 if (r->main == NULL) {
536 b->last_buf = 1; 332 b->last_buf = 1;
537 } 333 }
334
335 b->last_in_chain = 1;
538 336
539 b->file_pos = 0; 337 b->file_pos = 0;
540 b->file_last = ngx_file_size(&fi); 338 b->file_last = ngx_file_size(&fi);
541 339
542 b->file->fd = fd; 340 b->file->fd = fd;
548 346
549 return ngx_http_output_filter(r, &out); 347 return ngx_http_output_filter(r, &out);
550 } 348 }
551 349
552 350
553 static void *ngx_http_static_create_loc_conf(ngx_conf_t *cf) 351 static void *
352 ngx_http_static_create_loc_conf(ngx_conf_t *cf)
554 { 353 {
555 ngx_http_static_loc_conf_t *conf; 354 ngx_http_static_loc_conf_t *conf;
556 355
557 conf = ngx_palloc(cf->pool, sizeof(ngx_http_static_loc_conf_t)); 356 conf = ngx_palloc(cf->pool, sizeof(ngx_http_static_loc_conf_t));
558 if (conf == NULL) { 357 if (conf == NULL) {
563 362
564 return conf; 363 return conf;
565 } 364 }
566 365
567 366
568 static char *ngx_http_static_merge_loc_conf(ngx_conf_t *cf, 367 static char *
569 void *parent, void *child) 368 ngx_http_static_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
570 { 369 {
571 ngx_http_static_loc_conf_t *prev = parent; 370 ngx_http_static_loc_conf_t *prev = parent;
572 ngx_http_static_loc_conf_t *conf = child; 371 ngx_http_static_loc_conf_t *conf = child;
573 372
574 if (conf->redirect_cache == NULL) { 373 if (conf->redirect_cache == NULL) {
577 376
578 return NGX_CONF_OK; 377 return NGX_CONF_OK;
579 } 378 }
580 379
581 380
582 static ngx_int_t ngx_http_static_init(ngx_cycle_t *cycle) 381 static ngx_int_t
382 ngx_http_static_init(ngx_cycle_t *cycle)
583 { 383 {
584 ngx_http_handler_pt *h; 384 ngx_http_handler_pt *h;
585 ngx_http_core_main_conf_t *cmcf; 385 ngx_http_core_main_conf_t *cmcf;
586 386
587 cmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_core_module); 387 cmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_core_module);