Mercurial > hg > nginx-ranges
comparison src/http/modules/ngx_http_index_module.c @ 50:72eb30262aac NGINX_0_1_25
nginx 0.1.25
*) Bugfix: nginx did run on Linux parisc.
*) Feature: nginx now does not start under FreeBSD if the sysctl
kern.ipc.somaxconn value is too big.
*) Bugfix: if a request was internally redirected by the
ngx_http_index_module module to the ngx_http_proxy_module or
ngx_http_fastcgi_module modules, then the index file was not closed
after request completion.
*) Feature: the "proxy_pass" can be used in location with regular
expression.
*) Feature: the ngx_http_rewrite_filter_module module supports the
condition like "if ($HTTP_USER_AGENT ~ MSIE)".
*) Bugfix: nginx started too slow if the large number of addresses and
text values were used in the "geo" directive.
*) Change: a variable name must be declared as "$name" in the "geo"
directive. The previous variant without "$" is still supported, but
will be removed soon.
*) Feature: the "%{VARIABLE}v" logging parameter.
*) Feature: the "set $name value" directive.
*) Bugfix: gcc 4.0 compatibility.
*) Feature: the --with-openssl-opt=OPTIONS autoconfiguration directive.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Sat, 19 Mar 2005 00:00:00 +0300 |
parents | |
children | b55cbf18157e |
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49:93dabbc9efb9 | 50:72eb30262aac |
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1 | |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4 */ | |
5 | |
6 | |
7 #include <ngx_config.h> | |
8 #include <ngx_core.h> | |
9 #include <ngx_http.h> | |
10 | |
11 | |
12 typedef struct { | |
13 ngx_array_t indices; | |
14 size_t max_index_len; | |
15 ngx_http_cache_hash_t *index_cache; | |
16 } ngx_http_index_loc_conf_t; | |
17 | |
18 | |
19 typedef struct { | |
20 ngx_uint_t index; | |
21 u_char *last; | |
22 ngx_str_t path; | |
23 ngx_str_t redirect; | |
24 ngx_http_cache_entry_t *cache; | |
25 ngx_uint_t tested; /* unsigned tested:1 */ | |
26 } ngx_http_index_ctx_t; | |
27 | |
28 | |
29 #define NGX_HTTP_DEFAULT_INDEX "index.html" | |
30 | |
31 | |
32 static ngx_int_t ngx_http_index_test_dir(ngx_http_request_t *r, | |
33 ngx_http_index_ctx_t *ctx); | |
34 static ngx_int_t ngx_http_index_error(ngx_http_request_t *r, | |
35 ngx_http_index_ctx_t *ctx, ngx_err_t err); | |
36 | |
37 static ngx_int_t ngx_http_index_init(ngx_cycle_t *cycle); | |
38 static void *ngx_http_index_create_loc_conf(ngx_conf_t *cf); | |
39 static char *ngx_http_index_merge_loc_conf(ngx_conf_t *cf, | |
40 void *parent, void *child); | |
41 static char *ngx_http_index_set_index(ngx_conf_t *cf, ngx_command_t *cmd, | |
42 void *conf); | |
43 | |
44 | |
45 static ngx_command_t ngx_http_index_commands[] = { | |
46 | |
47 { ngx_string("index"), | |
48 NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
49 ngx_http_index_set_index, | |
50 NGX_HTTP_LOC_CONF_OFFSET, | |
51 0, | |
52 NULL }, | |
53 | |
54 #if (NGX_HTTP_CACHE) | |
55 | |
56 { ngx_string("index_cache"), | |
57 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE3, | |
58 ngx_http_set_cache_slot, | |
59 NGX_HTTP_LOC_CONF_OFFSET, | |
60 offsetof(ngx_http_index_loc_conf_t, index_cache), | |
61 NULL }, | |
62 | |
63 #endif | |
64 | |
65 ngx_null_command | |
66 }; | |
67 | |
68 | |
69 ngx_http_module_t ngx_http_index_module_ctx = { | |
70 NULL, /* pre conf */ | |
71 | |
72 NULL, /* create main configuration */ | |
73 NULL, /* init main configuration */ | |
74 | |
75 NULL, /* create server configuration */ | |
76 NULL, /* merge server configuration */ | |
77 | |
78 ngx_http_index_create_loc_conf, /* create location configration */ | |
79 ngx_http_index_merge_loc_conf /* merge location configration */ | |
80 }; | |
81 | |
82 | |
83 ngx_module_t ngx_http_index_module = { | |
84 NGX_MODULE, | |
85 &ngx_http_index_module_ctx, /* module context */ | |
86 ngx_http_index_commands, /* module directives */ | |
87 NGX_HTTP_MODULE, /* module type */ | |
88 ngx_http_index_init, /* init module */ | |
89 NULL /* init process */ | |
90 }; | |
91 | |
92 | |
93 /* | |
94 * Try to open the first index file before the test of the directory existence | |
95 * because the valid requests should be many more than invalid ones. | |
96 * If open() would fail, then stat() should be more quickly because some data | |
97 * is already cached in the kernel. | |
98 * Besides, Win32 has ERROR_PATH_NOT_FOUND (NGX_ENOTDIR). | |
99 * Unix has ENOTDIR error, although it less helpfull - it points only | |
100 * that path contains the usual file in place of the directory. | |
101 */ | |
102 | |
103 static ngx_int_t ngx_http_index_handler(ngx_http_request_t *r) | |
104 { | |
105 u_char *name; | |
106 ngx_fd_t fd; | |
107 ngx_int_t rc; | |
108 ngx_str_t *index; | |
109 ngx_err_t err; | |
110 ngx_log_t *log; | |
111 ngx_http_index_ctx_t *ctx; | |
112 ngx_http_core_loc_conf_t *clcf; | |
113 ngx_http_index_loc_conf_t *ilcf; | |
114 #if (NGX_HTTP_CACHE0) | |
115 /* crc must be in ctx !! */ | |
116 uint32_t crc; | |
117 #endif | |
118 | |
119 if (r->uri.data[r->uri.len - 1] != '/') { | |
120 return NGX_DECLINED; | |
121 } | |
122 | |
123 /* TODO: Win32 */ | |
124 if (r->zero_in_uri) { | |
125 return NGX_DECLINED; | |
126 } | |
127 | |
128 log = r->connection->log; | |
129 | |
130 /* | |
131 * we use context because the handler supports an async file opening | |
132 * and thus can be called several times | |
133 */ | |
134 | |
135 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); | |
136 ilcf = ngx_http_get_module_loc_conf(r, ngx_http_index_module); | |
137 | |
138 ctx = ngx_http_get_module_ctx(r, ngx_http_index_module); | |
139 if (ctx == NULL) { | |
140 | |
141 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_index_ctx_t)); | |
142 if (ctx == NULL) { | |
143 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
144 } | |
145 | |
146 ngx_http_set_ctx(r, ctx, ngx_http_index_module); | |
147 | |
148 #if (NGX_HTTP_CACHE) | |
149 | |
150 if (ilcf->index_cache) { | |
151 ctx->cache = ngx_http_cache_get(ilcf->index_cache, NULL, | |
152 &r->uri, &crc); | |
153 | |
154 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, | |
155 "http index cache get: %p", ctx->cache); | |
156 | |
157 if (ctx->cache && !ctx->cache->expired) { | |
158 | |
159 ctx->cache->accessed = ngx_cached_time; | |
160 | |
161 ctx->redirect.len = ctx->cache->data.value.len; | |
162 ctx->redirect.data = ngx_palloc(r->pool, ctx->redirect.len + 1); | |
163 if (ctx->redirect.data == NULL) { | |
164 ngx_http_cache_unlock(ilcf->index_cache, ctx->cache, log); | |
165 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
166 } | |
167 | |
168 ngx_memcpy(ctx->redirect.data, ctx->cache->data.value.data, | |
169 ctx->redirect.len + 1); | |
170 ngx_http_cache_unlock(ilcf->index_cache, ctx->cache, log); | |
171 | |
172 return ngx_http_internal_redirect(r, &ctx->redirect, NULL); | |
173 } | |
174 } | |
175 | |
176 #endif | |
177 | |
178 #if 0 | |
179 ctx->path.data = ngx_palloc(r->pool, clcf->root.len + r->uri.len | |
180 + ilcf->max_index_len | |
181 - clcf->alias * clcf->name.len); | |
182 if (ctx->path.data == NULL) { | |
183 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
184 } | |
185 | |
186 ctx->redirect.data = ngx_cpymem(ctx->path.data, clcf->root.data, | |
187 clcf->root.len); | |
188 #endif | |
189 | |
190 if (clcf->alias) { | |
191 ctx->path.data = ngx_palloc(r->pool, clcf->root.len | |
192 + r->uri.len + 1 - clcf->name.len | |
193 + ilcf->max_index_len); | |
194 if (ctx->path.data == NULL) { | |
195 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
196 } | |
197 | |
198 ctx->redirect.data = ngx_palloc(r->pool, r->uri.len | |
199 + ilcf->max_index_len); | |
200 if (ctx->redirect.data == NULL) { | |
201 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
202 } | |
203 | |
204 ngx_memcpy(ctx->path.data, clcf->root.data, clcf->root.len); | |
205 | |
206 ctx->last = ngx_cpystrn(ctx->path.data + clcf->root.len, | |
207 r->uri.data + clcf->name.len, | |
208 r->uri.len + 1 - clcf->name.len); | |
209 | |
210 #if 0 | |
211 /* | |
212 * aliases usually have trailling "/", | |
213 * set it in the start of the possible redirect | |
214 */ | |
215 | |
216 if (*ctx->redirect.data != '/') { | |
217 ctx->redirect.data--; | |
218 } | |
219 #endif | |
220 | |
221 } else { | |
222 ctx->path.data = ngx_palloc(r->pool, clcf->root.len + r->uri.len | |
223 + ilcf->max_index_len); | |
224 if (ctx->path.data == NULL) { | |
225 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
226 } | |
227 | |
228 ctx->redirect.data = ngx_cpymem(ctx->path.data, clcf->root.data, | |
229 clcf->root.len); | |
230 | |
231 ctx->last = ngx_cpystrn(ctx->redirect.data, r->uri.data, | |
232 r->uri.len + 1); | |
233 } | |
234 } | |
235 | |
236 ctx->path.len = ctx->last - ctx->path.data; | |
237 | |
238 index = ilcf->indices.elts; | |
239 for (/* void */; ctx->index < ilcf->indices.nelts; ctx->index++) { | |
240 | |
241 if (index[ctx->index].data[0] == '/') { | |
242 name = index[ctx->index].data; | |
243 | |
244 } else { | |
245 ngx_memcpy(ctx->last, index[ctx->index].data, | |
246 index[ctx->index].len + 1); | |
247 name = ctx->path.data; | |
248 } | |
249 | |
250 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, | |
251 "open index \"%s\"", name); | |
252 | |
253 fd = ngx_open_file(name, NGX_FILE_RDONLY, NGX_FILE_OPEN); | |
254 | |
255 if (fd == (ngx_fd_t) NGX_AGAIN) { | |
256 return NGX_AGAIN; | |
257 } | |
258 | |
259 if (fd == NGX_INVALID_FILE) { | |
260 err = ngx_errno; | |
261 | |
262 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, err, | |
263 ngx_open_file_n " \"%s\" failed", name); | |
264 | |
265 if (err == NGX_ENOTDIR) { | |
266 return ngx_http_index_error(r, ctx, err); | |
267 | |
268 } else if (err == NGX_EACCES) { | |
269 return ngx_http_index_error(r, ctx, err); | |
270 } | |
271 | |
272 if (!ctx->tested) { | |
273 rc = ngx_http_index_test_dir(r, ctx); | |
274 | |
275 if (rc != NGX_OK) { | |
276 return rc; | |
277 } | |
278 | |
279 ctx->tested = 1; | |
280 } | |
281 | |
282 if (err == NGX_ENOENT) { | |
283 continue; | |
284 } | |
285 | |
286 ngx_log_error(NGX_LOG_ERR, log, err, | |
287 ngx_open_file_n " \"%s\" failed", name); | |
288 | |
289 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
290 } | |
291 | |
292 | |
293 /* STUB: open file cache */ | |
294 | |
295 r->file.name.data = name; | |
296 r->file.fd = fd; | |
297 | |
298 if (index[ctx->index].data[0] == '/') { | |
299 r->file.name.len = index[ctx->index].len; | |
300 ctx->redirect.len = index[ctx->index].len; | |
301 ctx->redirect.data = index[ctx->index].data; | |
302 | |
303 } else { | |
304 if (clcf->alias) { | |
305 name = ngx_cpymem(ctx->redirect.data, r->uri.data, r->uri.len); | |
306 ngx_memcpy(name, index[ctx->index].data, | |
307 index[ctx->index].len + 1); | |
308 } | |
309 | |
310 ctx->redirect.len = r->uri.len + index[ctx->index].len; | |
311 r->file.name.len = clcf->root.len + r->uri.len | |
312 - clcf->alias * clcf->name.len | |
313 + index[ctx->index].len; | |
314 } | |
315 | |
316 /**/ | |
317 | |
318 | |
319 #if (NGX_HTTP_CACHE) | |
320 | |
321 if (ilcf->index_cache) { | |
322 | |
323 if (ctx->cache) { | |
324 if (ctx->redirect.len == ctx->cache->data.value.len | |
325 && ngx_memcmp(ctx->cache->data.value.data, | |
326 ctx->redirect.data, ctx->redirect.len) == 0) | |
327 { | |
328 ctx->cache->accessed = ngx_cached_time; | |
329 ctx->cache->updated = ngx_cached_time; | |
330 ngx_http_cache_unlock(ilcf->index_cache, ctx->cache, log); | |
331 | |
332 return ngx_http_internal_redirect(r, &ctx->redirect, NULL); | |
333 } | |
334 } | |
335 | |
336 ctx->redirect.len++; | |
337 ctx->cache = ngx_http_cache_alloc(ilcf->index_cache, ctx->cache, | |
338 NULL, &r->uri, crc, | |
339 &ctx->redirect, log); | |
340 ctx->redirect.len--; | |
341 | |
342 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, | |
343 "http index cache alloc: %p", ctx->cache); | |
344 | |
345 if (ctx->cache) { | |
346 ctx->cache->fd = NGX_INVALID_FILE; | |
347 ctx->cache->accessed = ngx_cached_time; | |
348 ctx->cache->last_modified = 0; | |
349 ctx->cache->updated = ngx_cached_time; | |
350 ctx->cache->memory = 1; | |
351 ngx_http_cache_unlock(ilcf->index_cache, ctx->cache, log); | |
352 } | |
353 } | |
354 | |
355 #endif | |
356 | |
357 return ngx_http_internal_redirect(r, &ctx->redirect, NULL); | |
358 } | |
359 | |
360 return NGX_DECLINED; | |
361 } | |
362 | |
363 | |
364 static ngx_int_t ngx_http_index_test_dir(ngx_http_request_t *r, | |
365 ngx_http_index_ctx_t *ctx) | |
366 { | |
367 ngx_err_t err; | |
368 | |
369 ctx->path.data[ctx->path.len - 1] = '\0'; | |
370 ctx->path.data[ctx->path.len] = '\0'; | |
371 | |
372 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
373 "http check dir: \"%s\"", ctx->path.data); | |
374 | |
375 if (ngx_file_info(ctx->path.data, &r->file.info) == -1) { | |
376 | |
377 err = ngx_errno; | |
378 | |
379 if (err == NGX_ENOENT) { | |
380 ctx->path.data[ctx->path.len - 1] = '/'; | |
381 return ngx_http_index_error(r, ctx, err); | |
382 } | |
383 | |
384 ngx_log_error(NGX_LOG_CRIT, r->connection->log, err, | |
385 ngx_file_info_n " \"%s\" failed", ctx->path.data); | |
386 | |
387 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
388 } | |
389 | |
390 ctx->path.data[ctx->path.len - 1] = '/'; | |
391 | |
392 if (ngx_is_dir(&r->file.info)) { | |
393 return NGX_OK; | |
394 } | |
395 | |
396 /* THINK: not reached ??? */ | |
397 return ngx_http_index_error(r, ctx, 0); | |
398 } | |
399 | |
400 | |
401 static ngx_int_t ngx_http_index_error(ngx_http_request_t *r, | |
402 ngx_http_index_ctx_t *ctx, ngx_err_t err) | |
403 { | |
404 if (err == NGX_EACCES) { | |
405 ngx_log_error(NGX_LOG_ERR, r->connection->log, err, | |
406 "\"%s\" is forbidden", ctx->path.data); | |
407 | |
408 return NGX_HTTP_FORBIDDEN; | |
409 } | |
410 | |
411 ngx_log_error(NGX_LOG_ERR, r->connection->log, err, | |
412 "\"%s\" is not found", ctx->path.data); | |
413 return NGX_HTTP_NOT_FOUND; | |
414 } | |
415 | |
416 | |
417 static ngx_int_t ngx_http_index_init(ngx_cycle_t *cycle) | |
418 { | |
419 ngx_http_handler_pt *h; | |
420 ngx_http_core_main_conf_t *cmcf; | |
421 | |
422 cmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_core_module); | |
423 | |
424 h = ngx_array_push(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers); | |
425 if (h == NULL) { | |
426 return NGX_ERROR; | |
427 } | |
428 | |
429 *h = ngx_http_index_handler; | |
430 | |
431 return NGX_OK; | |
432 } | |
433 | |
434 | |
435 static void *ngx_http_index_create_loc_conf(ngx_conf_t *cf) | |
436 { | |
437 ngx_http_index_loc_conf_t *conf; | |
438 | |
439 conf = ngx_palloc(cf->pool, sizeof(ngx_http_index_loc_conf_t)); | |
440 if (conf == NULL) { | |
441 return NGX_CONF_ERROR; | |
442 } | |
443 | |
444 if (ngx_array_init(&conf->indices, cf->pool, 2, sizeof(ngx_str_t)) | |
445 == NGX_ERROR) | |
446 { | |
447 return NGX_CONF_ERROR; | |
448 } | |
449 | |
450 conf->max_index_len = 0; | |
451 | |
452 conf->index_cache = NULL; | |
453 | |
454 return conf; | |
455 } | |
456 | |
457 | |
458 /* TODO: remove duplicate indices */ | |
459 | |
460 static char *ngx_http_index_merge_loc_conf(ngx_conf_t *cf, | |
461 void *parent, void *child) | |
462 { | |
463 ngx_http_index_loc_conf_t *prev = parent; | |
464 ngx_http_index_loc_conf_t *conf = child; | |
465 | |
466 ngx_str_t *index; | |
467 | |
468 if (conf->max_index_len == 0) { | |
469 if (prev->max_index_len != 0) { | |
470 ngx_memcpy(conf, prev, sizeof(ngx_http_index_loc_conf_t)); | |
471 return NGX_CONF_OK; | |
472 } | |
473 | |
474 index = ngx_array_push(&conf->indices); | |
475 if (index == NULL) { | |
476 return NGX_CONF_ERROR; | |
477 } | |
478 | |
479 index->len = sizeof(NGX_HTTP_DEFAULT_INDEX) - 1; | |
480 index->data = (u_char *) NGX_HTTP_DEFAULT_INDEX; | |
481 conf->max_index_len = sizeof(NGX_HTTP_DEFAULT_INDEX); | |
482 | |
483 return NGX_CONF_OK; | |
484 } | |
485 | |
486 #if 0 | |
487 | |
488 if (prev->max_index_len != 0) { | |
489 | |
490 prev_index = prev->indices.elts; | |
491 for (i = 0; i < prev->indices.nelts; i++) { | |
492 index = ngx_array_push(&conf->indices); | |
493 if (index == NULL) { | |
494 return NGX_CONF_ERROR; | |
495 } | |
496 | |
497 index->len = prev_index[i].len; | |
498 index->data = prev_index[i].data; | |
499 } | |
500 } | |
501 | |
502 if (conf->max_index_len < prev->max_index_len) { | |
503 conf->max_index_len = prev->max_index_len; | |
504 } | |
505 | |
506 #endif | |
507 | |
508 if (conf->index_cache == NULL) { | |
509 conf->index_cache = prev->index_cache; | |
510 } | |
511 | |
512 return NGX_CONF_OK; | |
513 } | |
514 | |
515 | |
516 /* TODO: warn about duplicate indices */ | |
517 | |
518 static char *ngx_http_index_set_index(ngx_conf_t *cf, ngx_command_t *cmd, | |
519 void *conf) | |
520 { | |
521 ngx_http_index_loc_conf_t *ilcf = conf; | |
522 | |
523 ngx_uint_t i; | |
524 ngx_str_t *index, *value; | |
525 | |
526 value = cf->args->elts; | |
527 | |
528 if (value[1].data[0] == '/' && ilcf->indices.nelts == 0) { | |
529 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
530 "first index \"%V\" in \"%V\" directive " | |
531 "must not be absolute", | |
532 &value[1], &cmd->name); | |
533 return NGX_CONF_ERROR; | |
534 } | |
535 | |
536 for (i = 1; i < cf->args->nelts; i++) { | |
537 if (value[i].len == 0) { | |
538 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
539 "index \"%V\" in \"%V\" directive is invalid", | |
540 &value[1], &cmd->name); | |
541 return NGX_CONF_ERROR; | |
542 } | |
543 | |
544 index = ngx_array_push(&ilcf->indices); | |
545 if (index == NULL) { | |
546 return NGX_CONF_ERROR; | |
547 } | |
548 | |
549 index->len = value[i].len; | |
550 index->data = value[i].data; | |
551 | |
552 if (ilcf->max_index_len < index->len + 1) { | |
553 ilcf->max_index_len = index->len + 1; | |
554 } | |
555 } | |
556 | |
557 return NGX_CONF_OK; | |
558 } |