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comparison src/http/modules/ngx_http_autoindex_module.c @ 50:72eb30262aac NGINX_0_1_25

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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 0d75d65c642f
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49:93dabbc9efb9 50:72eb30262aac
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 #if 0
13
14 typedef struct {
15 ngx_buf_t *buf;
16 size_t size;
17 ngx_pool_t *pool;
18 size_t alloc_size;
19 ngx_chain_t **last_out;
20 } ngx_http_autoindex_ctx_t;
21
22 #endif
23
24
25 typedef struct {
26 ngx_str_t name;
27 ngx_uint_t escape;
28 ngx_uint_t dir;
29 time_t mtime;
30 off_t size;
31 } ngx_http_autoindex_entry_t;
32
33
34 typedef struct {
35 ngx_flag_t enable;
36 } ngx_http_autoindex_loc_conf_t;
37
38
39 #define NGX_HTTP_AUTOINDEX_NAME_LEN 50
40
41
42 static int ngx_http_autoindex_cmp_entries(const void *one, const void *two);
43 static ngx_int_t ngx_http_autoindex_error(ngx_http_request_t *r,
44 ngx_dir_t *dir, u_char *name);
45 static ngx_int_t ngx_http_autoindex_init(ngx_cycle_t *cycle);
46 static void *ngx_http_autoindex_create_loc_conf(ngx_conf_t *cf);
47 static char *ngx_http_autoindex_merge_loc_conf(ngx_conf_t *cf,
48 void *parent, void *child);
49
50
51 static ngx_command_t ngx_http_autoindex_commands[] = {
52
53 { ngx_string("autoindex"),
54 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
55 ngx_conf_set_flag_slot,
56 NGX_HTTP_LOC_CONF_OFFSET,
57 offsetof(ngx_http_autoindex_loc_conf_t, enable),
58 NULL },
59
60 ngx_null_command
61 };
62
63
64 ngx_http_module_t ngx_http_autoindex_module_ctx = {
65 NULL, /* pre conf */
66
67 NULL, /* create main configuration */
68 NULL, /* init main configuration */
69
70 NULL, /* create server configuration */
71 NULL, /* merge server configuration */
72
73 ngx_http_autoindex_create_loc_conf, /* create location configration */
74 ngx_http_autoindex_merge_loc_conf /* merge location configration */
75 };
76
77
78 ngx_module_t ngx_http_autoindex_module = {
79 NGX_MODULE,
80 &ngx_http_autoindex_module_ctx, /* module context */
81 ngx_http_autoindex_commands, /* module directives */
82 NGX_HTTP_MODULE, /* module type */
83 ngx_http_autoindex_init, /* init module */
84 NULL /* init process */
85 };
86
87
88 static u_char title[] =
89 "<html>" CRLF
90 "<head><title>Index of "
91 ;
92
93
94 static u_char header[] =
95 "</title></head>" CRLF
96 "<body bgcolor=\"white\">" CRLF
97 "<h1>Index of "
98 ;
99
100 static u_char tail[] =
101 "</body>" CRLF
102 "</html>" CRLF
103 ;
104
105
106 static ngx_int_t
107 ngx_http_autoindex_handler(ngx_http_request_t *r)
108 {
109 u_char *last;
110 size_t len;
111 ngx_tm_t tm;
112 ngx_int_t rc;
113 ngx_uint_t i, level;
114 ngx_err_t err;
115 ngx_buf_t *b;
116 ngx_chain_t out;
117 ngx_str_t dname, fname;
118 ngx_dir_t dir;
119 ngx_pool_t *pool;
120 ngx_array_t entries;
121 ngx_http_core_loc_conf_t *clcf;
122 ngx_http_autoindex_entry_t *entry;
123 ngx_http_autoindex_loc_conf_t *alcf;
124
125 static char *months[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
126 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
127
128 if (r->uri.data[r->uri.len - 1] != '/') {
129 return NGX_DECLINED;
130 }
131
132 /* TODO: Win32 */
133 if (r->zero_in_uri) {
134 return NGX_DECLINED;
135 }
136
137 alcf = ngx_http_get_module_loc_conf(r, ngx_http_autoindex_module);
138
139 if (!alcf->enable) {
140 return NGX_DECLINED;
141 }
142
143 /* TODO: pool should be temporary pool */
144 pool = r->pool;
145
146 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
147
148 if (clcf->alias) {
149 dname.data = ngx_palloc(pool, clcf->root.len + r->uri.len
150 + NGX_DIR_MASK_LEN + 1
151 - clcf->name.len);
152 if (dname.data == NULL) {
153 return NGX_HTTP_INTERNAL_SERVER_ERROR;
154 }
155
156 last = ngx_cpymem(dname.data, clcf->root.data, clcf->root.len);
157 last = ngx_cpystrn(last, r->uri.data + clcf->name.len,
158 r->uri.len - clcf->name.len + 1);
159
160 } else {
161 dname.data = ngx_palloc(pool, clcf->root.len + r->uri.len
162 + NGX_DIR_MASK_LEN);
163 if (dname.data == NULL) {
164 return NGX_HTTP_INTERNAL_SERVER_ERROR;
165 }
166
167 last = ngx_cpymem(dname.data, clcf->root.data, clcf->root.len);
168 last = ngx_cpystrn(last, r->uri.data, r->uri.len);
169 }
170
171 dname.len = last - dname.data;
172
173 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
174 "http autoindex: \"%s\"", dname.data);
175
176
177 if (ngx_open_dir(&dname, &dir) == NGX_ERROR) {
178 err = ngx_errno;
179
180 if (err == NGX_ENOENT || err == NGX_ENOTDIR) {
181 level = NGX_LOG_ERR;
182 rc = NGX_HTTP_NOT_FOUND;
183
184 } else if (err == NGX_EACCES) {
185 level = NGX_LOG_ERR;
186 rc = NGX_HTTP_FORBIDDEN;
187
188 } else {
189 level = NGX_LOG_CRIT;
190 rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
191 }
192
193 ngx_log_error(level, r->connection->log, err,
194 ngx_open_dir_n " \"%s\" failed", dname.data);
195
196 return rc;
197 }
198
199 #if (NGX_SUPPRESS_WARN)
200 /* MSVC thinks 'entries' may be used without having been initialized */
201 ngx_memzero(&entries, sizeof(ngx_array_t));
202 #endif
203
204 if (ngx_array_init(&entries, pool, 50, sizeof(ngx_http_autoindex_entry_t))
205 == NGX_ERROR)
206 {
207 return ngx_http_autoindex_error(r, &dir, dname.data);
208 }
209
210 fname.len = 0;
211 #if (NGX_SUPPRESS_WARN)
212 fname.data = NULL;
213 #endif
214
215 for ( ;; ) {
216 ngx_set_errno(0);
217
218 if (ngx_read_dir(&dir) == NGX_ERROR) {
219 err = ngx_errno;
220
221 if (err != NGX_ENOMOREFILES) {
222 ngx_log_error(NGX_LOG_CRIT, r->connection->log, err,
223 ngx_read_dir_n " \"%s\" failed", dname.data);
224 return ngx_http_autoindex_error(r, &dir, dname.data);
225 }
226
227 break;
228 }
229
230 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
231 "http autoindex file: \"%s\"", ngx_de_name(&dir));
232
233 len = ngx_de_namelen(&dir);
234
235 if (len == 1 && ngx_de_name(&dir)[0] == '.') {
236 continue;
237 }
238
239 if (len == 2
240 && ngx_de_name(&dir)[0] == '.'
241 && ngx_de_name(&dir)[1] == '.')
242 {
243 continue;
244 }
245
246 if (!dir.valid_info) {
247
248 if (dname.len + 1 + len > fname.len) {
249 fname.len = dname.len + 1 + len + 32;
250
251 fname.data = ngx_palloc(pool, fname.len);
252 if (fname.data == NULL) {
253 return ngx_http_autoindex_error(r, &dir, dname.data);
254 }
255
256 last = ngx_cpystrn(fname.data, dname.data,
257 dname.len + 1);
258 *last++ = '/';
259 }
260
261 ngx_cpystrn(last, ngx_de_name(&dir), len + 1);
262
263 if (ngx_de_info(fname.data, &dir) == NGX_FILE_ERROR) {
264 err = ngx_errno;
265
266 if (err != NGX_ENOENT) {
267 ngx_log_error(NGX_LOG_CRIT, r->connection->log, err,
268 ngx_de_info_n " \"%s\" failed", fname.data);
269 return ngx_http_autoindex_error(r, &dir, dname.data);
270 }
271
272 if (ngx_de_link_info(fname.data, &dir) == NGX_FILE_ERROR) {
273 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
274 ngx_de_link_info_n " \"%s\" failed",
275 fname.data);
276 return ngx_http_autoindex_error(r, &dir, dname.data);
277 }
278 }
279 }
280
281 entry = ngx_array_push(&entries);
282 if (entry == NULL) {
283 return ngx_http_autoindex_error(r, &dir, dname.data);
284 }
285
286 entry->name.len = len;
287 entry->escape = 2 * ngx_escape_uri(NULL, ngx_de_name(&dir), len,
288 NGX_ESCAPE_HTML);
289
290 entry->name.data = ngx_palloc(pool, len + entry->escape + 1);
291 if (entry->name.data == NULL) {
292 return ngx_http_autoindex_error(r, &dir, dname.data);
293 }
294
295 ngx_cpystrn(entry->name.data, ngx_de_name(&dir), len + 1);
296
297 entry->dir = ngx_de_is_dir(&dir);
298 entry->mtime = ngx_de_mtime(&dir);
299 entry->size = ngx_de_size(&dir);
300 }
301
302 if (ngx_close_dir(&dir) == NGX_ERROR) {
303 ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
304 ngx_close_dir_n " \"%s\" failed", dname.data);
305 }
306
307 len = sizeof(title) - 1
308 + r->uri.len
309 + sizeof(header) - 1
310 + r->uri.len
311 + sizeof("</h1>") - 1
312 + sizeof("<hr><pre><a href=\"../\">../</a>" CRLF) - 1
313 + sizeof("</pre><hr>") - 1
314 + sizeof(tail) - 1;
315
316 entry = entries.elts;
317 for (i = 0; i < entries.nelts; i++) {
318 len += sizeof("<a href=\"") - 1
319 + 1 /* 1 is for "/" */
320 + entry[i].name.len + entry[i].escape
321 + sizeof("\">") - 1
322 + NGX_HTTP_AUTOINDEX_NAME_LEN + sizeof("&gt;") - 2
323 + sizeof("</a>") - 1
324 + sizeof(" 28-Sep-1970 12:00 ") - 1
325 + 19
326 + 2;
327 }
328
329 b = ngx_create_temp_buf(r->pool, len);
330 if (b == NULL) {
331 return NGX_HTTP_INTERNAL_SERVER_ERROR;
332 }
333
334 if (entries.nelts > 1) {
335 ngx_qsort(entry, (size_t) entries.nelts,
336 sizeof(ngx_http_autoindex_entry_t),
337 ngx_http_autoindex_cmp_entries);
338 }
339
340 b->last = ngx_cpymem(b->last, title, sizeof(title) - 1);
341 b->last = ngx_cpymem(b->last, r->uri.data, r->uri.len);
342 b->last = ngx_cpymem(b->last, header, sizeof(header) - 1);
343 b->last = ngx_cpymem(b->last, r->uri.data, r->uri.len);
344 b->last = ngx_cpymem(b->last, "</h1>", sizeof("</h1>") - 1);
345
346 b->last = ngx_cpymem(b->last, "<hr><pre><a href=\"../\">../</a>" CRLF,
347 sizeof("<hr><pre><a href=\"../\">../</a>" CRLF) - 1);
348
349 for (i = 0; i < entries.nelts; i++) {
350 b->last = ngx_cpymem(b->last, "<a href=\"", sizeof("<a href=\"") - 1);
351
352 if (entry[i].escape) {
353 ngx_escape_uri(b->last, entry[i].name.data, entry[i].name.len,
354 NGX_ESCAPE_HTML);
355
356 b->last += entry[i].name.len + entry[i].escape;
357
358 } else {
359 b->last = ngx_cpymem(b->last, entry[i].name.data,
360 entry[i].name.len);
361 }
362
363 if (entry[i].dir) {
364 *b->last++ = '/';
365 }
366
367 *b->last++ = '"';
368 *b->last++ = '>';
369
370 b->last = ngx_cpystrn(b->last, entry[i].name.data,
371 NGX_HTTP_AUTOINDEX_NAME_LEN + 1);
372
373 len = entry[i].name.len;
374
375 if (len > NGX_HTTP_AUTOINDEX_NAME_LEN) {
376 b->last = ngx_cpymem(b->last - 3, "..&gt;</a>",
377 sizeof("..&gt;</a>") - 1);
378
379 } else {
380 if (entry[i].dir && NGX_HTTP_AUTOINDEX_NAME_LEN - len > 0) {
381 *b->last++ = '/';
382 len++;
383 }
384
385 b->last = ngx_cpymem(b->last, "</a>", sizeof("</a>") - 1);
386 ngx_memset(b->last, ' ', NGX_HTTP_AUTOINDEX_NAME_LEN - len);
387 b->last += NGX_HTTP_AUTOINDEX_NAME_LEN - len;
388 }
389
390 *b->last++ = ' ';
391
392 ngx_gmtime(entry[i].mtime, &tm);
393
394 b->last = ngx_sprintf(b->last, "%02d-%s-%d %02d:%02d ",
395 tm.ngx_tm_mday,
396 months[tm.ngx_tm_mon - 1],
397 tm.ngx_tm_year,
398 tm.ngx_tm_hour,
399 tm.ngx_tm_min);
400
401 if (entry[i].dir) {
402 b->last = ngx_cpymem(b->last, " -",
403 sizeof(" -") - 1);
404
405 } else {
406 b->last = ngx_sprintf(b->last, "%19O", entry[i].size);
407 }
408
409 *b->last++ = CR;
410 *b->last++ = LF;
411 }
412
413 /* TODO: free temporary pool */
414
415 b->last = ngx_cpymem(b->last, "</pre><hr>", sizeof("</pre><hr>") - 1);
416
417 b->last = ngx_cpymem(b->last, tail, sizeof(tail) - 1);
418
419 r->headers_out.status = NGX_HTTP_OK;
420 r->headers_out.content_length_n = b->last - b->pos;
421
422 r->headers_out.content_type = ngx_list_push(&r->headers_out.headers);
423 if (r->headers_out.content_type == NULL) {
424 return NGX_HTTP_INTERNAL_SERVER_ERROR;
425 }
426
427 r->headers_out.content_type->key.len = 0;
428 r->headers_out.content_type->key.data = NULL;
429 r->headers_out.content_type->value.len = sizeof("text/html") - 1;
430 r->headers_out.content_type->value.data = (u_char *) "text/html";
431
432 rc = ngx_http_send_header(r);
433
434 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
435 return rc;
436 }
437
438 if (!r->main) {
439 b->last_buf = 1;
440 }
441
442 out.buf = b;
443 out.next = NULL;
444
445 return ngx_http_output_filter(r, &out);
446 }
447
448
449 static int
450 ngx_http_autoindex_cmp_entries(const void *one, const void *two)
451 {
452 ngx_http_autoindex_entry_t *first = (ngx_http_autoindex_entry_t *) one;
453 ngx_http_autoindex_entry_t *second = (ngx_http_autoindex_entry_t *) two;
454
455 if (first->dir && !second->dir) {
456 /* move the directories to the start */
457 return -1;
458 }
459
460 if (!first->dir && second->dir) {
461 /* move the directories to the start */
462 return 1;
463 }
464
465 return (int) ngx_strcmp(first->name.data, second->name.data);
466 }
467
468
469 #if 0
470
471 static ngx_buf_t *
472 ngx_http_autoindex_alloc(ngx_http_autoindex_ctx_t *ctx, size_t size)
473 {
474 ngx_chain_t *cl;
475
476 if (ctx->buf) {
477
478 if ((size_t) (ctx->buf->end - ctx->buf->last) >= size) {
479 return ctx->buf;
480 }
481
482 ctx->size += ctx->buf->last - ctx->buf->pos;
483 }
484
485 ctx->buf = ngx_create_temp_buf(ctx->pool, ctx->alloc_size);
486 if (ctx->buf == NULL) {
487 return NULL;
488 }
489
490 cl = ngx_alloc_chain_link(ctx->pool);
491 if (cl == NULL) {
492 return NULL;
493 }
494
495 cl->buf = ctx->buf;
496 cl->next = NULL;
497
498 *ctx->last_out = cl;
499 ctx->last_out = &cl->next;
500
501 return ctx->buf;
502 }
503
504 #endif
505
506
507 static ngx_int_t
508 ngx_http_autoindex_error(ngx_http_request_t *r, ngx_dir_t *dir, u_char *name)
509 {
510 if (ngx_close_dir(dir) == NGX_ERROR) {
511 ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
512 ngx_close_dir_n " \"%s\" failed", name);
513 }
514
515 return NGX_HTTP_INTERNAL_SERVER_ERROR;
516 }
517
518
519 static ngx_int_t
520 ngx_http_autoindex_init(ngx_cycle_t *cycle)
521 {
522 ngx_http_handler_pt *h;
523 ngx_http_core_main_conf_t *cmcf;
524
525 cmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_core_module);
526
527 h = ngx_array_push(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers);
528 if (h == NULL) {
529 return NGX_ERROR;
530 }
531
532 *h = ngx_http_autoindex_handler;
533
534 return NGX_OK;
535 }
536
537
538 static void *
539 ngx_http_autoindex_create_loc_conf(ngx_conf_t *cf)
540 {
541 ngx_http_autoindex_loc_conf_t *conf;
542
543 conf = ngx_palloc(cf->pool, sizeof(ngx_http_autoindex_loc_conf_t));
544 if (conf == NULL) {
545 return NGX_CONF_ERROR;
546 }
547
548 conf->enable = NGX_CONF_UNSET;
549
550 return conf;
551 }
552
553
554 static char *
555 ngx_http_autoindex_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
556 {
557 ngx_http_autoindex_loc_conf_t *prev = parent;
558 ngx_http_autoindex_loc_conf_t *conf = child;
559
560 ngx_conf_merge_value(conf->enable, prev->enable, 0);
561
562 return NGX_CONF_OK;
563 }