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comparison src/http/modules/ngx_http_autoindex_handler.c @ 6:80ba094c6b3e NGINX_0_1_3

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nginx 0.1.3 *) Feature: the ngx_http_autoindex_module and the autoindex directive. *) Feature: the proxy_set_x_url directive. *) Bugfix: proxy module may get caught in an endless loop when sendfile is not used.
author Igor Sysoev <http://sysoev.ru>
date Mon, 25 Oct 2004 00:00:00 +0400
parents
children 983306b77348
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5:985c56ebe724 6:80ba094c6b3e
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 dir;
28 time_t mtime;
29 off_t size;
30 } ngx_http_autoindex_entry_t;
31
32
33 typedef struct {
34 ngx_flag_t enable;
35 } ngx_http_autoindex_loc_conf_t;
36
37
38 #define NGX_HTTP_AUTOINDEX_NAME_LEN 50
39
40
41 static int ngx_http_autoindex_cmp_entries(const void *one, const void *two);
42 static ngx_int_t ngx_http_autoindex_error(ngx_http_request_t *r, ngx_dir_t *dir,
43 u_char *name);
44 static ngx_int_t ngx_http_autoindex_init(ngx_cycle_t *cycle);
45 static void *ngx_http_autoindex_create_loc_conf(ngx_conf_t *cf);
46 static char *ngx_http_autoindex_merge_loc_conf(ngx_conf_t *cf,
47 void *parent, void *child);
48
49
50 static ngx_command_t ngx_http_autoindex_commands[] = {
51
52 { ngx_string("autoindex"),
53 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
54 ngx_conf_set_flag_slot,
55 NGX_HTTP_LOC_CONF_OFFSET,
56 offsetof(ngx_http_autoindex_loc_conf_t, enable),
57 NULL },
58
59 ngx_null_command
60 };
61
62
63 ngx_http_module_t ngx_http_autoindex_module_ctx = {
64 NULL, /* pre conf */
65
66 NULL, /* create main configuration */
67 NULL, /* init main configuration */
68
69 NULL, /* create server configuration */
70 NULL, /* merge server configuration */
71
72 ngx_http_autoindex_create_loc_conf, /* create location configration */
73 ngx_http_autoindex_merge_loc_conf /* merge location configration */
74 };
75
76
77 ngx_module_t ngx_http_autoindex_module = {
78 NGX_MODULE,
79 &ngx_http_autoindex_module_ctx, /* module context */
80 ngx_http_autoindex_commands, /* module directives */
81 NGX_HTTP_MODULE, /* module type */
82 ngx_http_autoindex_init, /* init module */
83 NULL /* init child */
84 };
85
86
87 static u_char title[] =
88 "<html>" CRLF
89 "<head><title>Index of "
90 ;
91
92
93 static u_char header[] =
94 "</title></head>" CRLF
95 "<body bgcolor=\"white\">" CRLF
96 "<h1>Index of "
97 ;
98
99 static u_char tail[] =
100 "</body>" CRLF
101 "</html>" CRLF
102 ;
103
104
105 static ngx_int_t ngx_http_autoindex_handler(ngx_http_request_t *r)
106 {
107 u_char *last, scale;
108 size_t len;
109 off_t length;
110 ngx_tm_t tm;
111 ngx_int_t rc, size;
112 ngx_uint_t i, level;
113 ngx_err_t err;
114 ngx_buf_t *b;
115 ngx_chain_t out;
116 ngx_str_t dname, fname;
117 ngx_dir_t dir;
118 ngx_pool_t *pool;
119 ngx_array_t entries;
120 ngx_http_core_loc_conf_t *clcf;
121 ngx_http_autoindex_entry_t *entry;
122 ngx_http_autoindex_loc_conf_t *alcf;
123
124 static char *months[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
125 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
126
127 if (r->uri.data[r->uri.len - 1] != '/') {
128 return NGX_DECLINED;
129 }
130
131 alcf = ngx_http_get_module_loc_conf(r, ngx_http_autoindex_module);
132
133 if (!alcf->enable) {
134 return NGX_DECLINED;
135 }
136
137 /* TODO: pool should be temporary pool */
138 pool = r->pool;
139
140 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
141
142 if (clcf->alias) {
143 dname.data = ngx_palloc(pool, clcf->root.len + r->uri.len
144 + NGX_DIR_MASK_LEN
145 - clcf->name.len);
146 if (dname.data == NULL) {
147 return NGX_HTTP_INTERNAL_SERVER_ERROR;
148 }
149
150 last = ngx_cpymem(dname.data, clcf->root.data, clcf->root.len);
151 last = ngx_cpystrn(last, r->uri.data + clcf->name.len,
152 r->uri.len - clcf->name.len);
153
154 } else {
155 dname.data = ngx_palloc(pool, clcf->root.len + r->uri.len
156 + NGX_DIR_MASK_LEN);
157 if (dname.data == NULL) {
158 return NGX_HTTP_INTERNAL_SERVER_ERROR;
159 }
160
161 last = ngx_cpymem(dname.data, clcf->root.data, clcf->root.len);
162 last = ngx_cpystrn(last, r->uri.data, r->uri.len);
163
164 }
165
166 dname.len = last - dname.data;
167
168 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
169 "http autoindex: \"%s\"", dname.data);
170
171
172 if (ngx_open_dir(&dname, &dir) == NGX_ERROR) {
173 err = ngx_errno;
174
175 if (err == NGX_ENOENT || err == NGX_ENOTDIR) {
176 level = NGX_LOG_ERR;
177 rc = NGX_HTTP_NOT_FOUND;
178
179 } else if (err == NGX_EACCES) {
180 level = NGX_LOG_ERR;
181 rc = NGX_HTTP_FORBIDDEN;
182
183 } else {
184 level = NGX_LOG_CRIT;
185 rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
186 }
187
188 ngx_log_error(level, r->connection->log, err,
189 ngx_open_dir_n " \"%s\" failed", dname.data);
190
191 return rc;
192 }
193
194 #if (NGX_SUPPRESS_WARN)
195 /* MSVC thinks 'entries' may be used without having been initialized */
196 ngx_memzero(&entries, sizeof(ngx_array_t));
197 #endif
198
199 if (ngx_array_init(&entries, pool, 50, sizeof(ngx_http_autoindex_entry_t))
200 == NGX_ERROR)
201 {
202 return ngx_http_autoindex_error(r, &dir, dname.data);
203 }
204
205 fname.len = 0;
206 #if (NGX_SUPPRESS_WARN)
207 fname.data = NULL;
208 #endif
209
210 for ( ;; ) {
211 ngx_set_errno(0);
212
213 if (ngx_read_dir(&dir) == NGX_ERROR) {
214 err = ngx_errno;
215
216 if (err == NGX_ENOMOREFILES) {
217 rc = NGX_OK;
218
219 } else {
220 ngx_log_error(NGX_LOG_CRIT, r->connection->log, err,
221 ngx_read_dir_n " \"%s\" failed", dname.data);
222 return ngx_http_autoindex_error(r, &dir, dname.data);
223 }
224
225 break;
226 }
227
228 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
229 "http autoindex file: \"%s\"", ngx_de_name(&dir));
230
231 len = ngx_de_namelen(&dir);
232
233 if (!dir.valid_info) {
234
235 if (dname.len + 1 + len > fname.len) {
236 fname.len = dname.len + 1 + len + 32;
237
238 if (!(fname.data = ngx_palloc(pool, fname.len))) {
239 return ngx_http_autoindex_error(r, &dir, dname.data);
240 }
241
242 last = ngx_cpystrn(fname.data, dname.data,
243 dname.len + 1);
244 *last++ = '/';
245 }
246
247 ngx_cpystrn(last, ngx_de_name(&dir), len + 1);
248
249 if (ngx_de_info(fname.data, &dir) == NGX_FILE_ERROR) {
250 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
251 ngx_de_info_n " \"%s\" failed", fname.data);
252 return ngx_http_autoindex_error(r, &dir, dname.data);
253 }
254 }
255
256 if (len == 1 && ngx_de_name(&dir)[0] == '.') {
257 continue;
258 }
259
260 if (len == 2
261 && ngx_de_name(&dir)[0] == '.'
262 && ngx_de_name(&dir)[0] == '.')
263 {
264 continue;
265 }
266
267 if (!(entry = ngx_array_push(&entries))) {
268 return ngx_http_autoindex_error(r, &dir, dname.data);
269 }
270
271 entry->name.len = len;
272
273 if (!(entry->name.data = ngx_palloc(pool, len + 1))) {
274 return ngx_http_autoindex_error(r, &dir, dname.data);
275 }
276 ngx_cpystrn(entry->name.data, ngx_de_name(&dir), len + 1);
277
278 entry->dir = ngx_de_is_dir(&dir);
279 entry->mtime = ngx_de_mtime(&dir);
280 entry->size = ngx_de_size(&dir);
281 }
282
283 if (ngx_close_dir(&dir) == NGX_ERROR) {
284 ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
285 ngx_close_dir_n " \"%s\" failed", dname.data);
286 }
287
288 len = sizeof(title) - 1
289 + r->uri.len
290 + sizeof(header) - 1
291 + r->uri.len
292 + sizeof("</h1>") - 1
293 + sizeof("<hr><pre><a href=\"../\">../</a>" CRLF) - 1
294 + sizeof("</pre><hr>") - 1
295 + sizeof(tail) - 1;
296
297 entry = entries.elts;
298 for (i = 0; i < entries.nelts; i++) {
299 len += sizeof("<a href=\"") - 1
300 + 1 /* 1 is for "/" */
301 + entry[i].name.len
302 + sizeof("\">") - 1
303 + NGX_HTTP_AUTOINDEX_NAME_LEN
304 + sizeof("</a>") - 1
305 + 1
306 + sizeof("28-Sep-1970 12:00 ") - 1
307 + sizeof("1023G") - 1
308 + 2;
309 }
310
311 if (!(b = ngx_create_temp_buf(r->pool, len))) {
312 return NGX_HTTP_INTERNAL_SERVER_ERROR;
313 }
314
315 if (entries.nelts > 1) {
316 ngx_qsort(entry, (size_t) entries.nelts,
317 sizeof(ngx_http_autoindex_entry_t),
318 ngx_http_autoindex_cmp_entries);
319 }
320
321 b->last = ngx_cpymem(b->last, title, sizeof(title) - 1);
322 b->last = ngx_cpymem(b->last, r->uri.data, r->uri.len);
323 b->last = ngx_cpymem(b->last, header, sizeof(header) - 1);
324 b->last = ngx_cpymem(b->last, r->uri.data, r->uri.len);
325 b->last = ngx_cpymem(b->last, "</h1>", sizeof("</h1>") - 1);
326
327 b->last = ngx_cpymem(b->last, "<hr><pre><a href=\"../\">../</a>" CRLF,
328 sizeof("<hr><pre><a href=\"../\">../</a>" CRLF) - 1);
329
330 for (i = 0; i < entries.nelts; i++) {
331 b->last = ngx_cpymem(b->last, "<a href=\"", sizeof("<a href=\"") - 1);
332 b->last = ngx_cpymem(b->last, entry[i].name.data, entry[i].name.len);
333
334 if (entry[i].dir) {
335 *b->last++ = '/';
336 }
337
338 *b->last++ = '"';
339 *b->last++ = '>';
340
341 b->last = ngx_cpystrn(b->last, entry[i].name.data,
342 NGX_HTTP_AUTOINDEX_NAME_LEN + 1);
343
344 len = entry[i].name.len;
345
346 if (len > NGX_HTTP_AUTOINDEX_NAME_LEN) {
347 b->last = ngx_cpymem(b->last - 3, "..&gt;</a>",
348 sizeof("..&gt;</a>") - 1);
349
350 } else {
351 if (entry[i].dir && NGX_HTTP_AUTOINDEX_NAME_LEN - len > 0) {
352 *b->last++ = '/';
353 len++;
354 }
355
356 b->last = ngx_cpymem(b->last, "</a>", sizeof("</a>") - 1);
357 ngx_memset(b->last, ' ', NGX_HTTP_AUTOINDEX_NAME_LEN - len);
358 b->last += NGX_HTTP_AUTOINDEX_NAME_LEN - len;
359 }
360
361 *b->last++ = ' ';
362
363 ngx_gmtime(entry[i].mtime, &tm);
364
365 b->last = ngx_sprintf(b->last, "%02d-%s-%d %02d:%02d ",
366 tm.ngx_tm_mday,
367 months[tm.ngx_tm_mon - 1],
368 tm.ngx_tm_year,
369 tm.ngx_tm_hour,
370 tm.ngx_tm_min);
371
372 if (entry[i].dir) {
373 b->last = ngx_cpymem(b->last, " -", sizeof(" -") - 1);
374
375 } else {
376 length = entry[i].size;
377
378 if (length > 999999999) {
379 size = (ngx_int_t) length / 1024 * 1024 * 1024;
380 if ((length % 1024 * 1024 * 1024)
381 > (1024 * 1024 * 1024 / 2 - 1))
382 {
383 size++;
384 }
385 scale = 'G';
386
387 } else if (length > 999999) {
388 size = (ngx_int_t) length / 1024 * 1024;
389 if ((length % 1024 * 1024) > (1024 * 1024 / 2 - 1)) {
390 size++;
391 }
392 scale = 'M';
393
394 } else if (length > 9999) {
395 size = (ngx_int_t) length / 1024;
396 if (length % 1024 > 511) {
397 size++;
398 }
399 scale = 'K';
400
401 } else {
402 size = (ngx_int_t) length;
403 scale = ' ';
404 }
405
406 b->last = ngx_sprintf(b->last, "%4i", size);
407
408 if (scale != ' ') {
409 *b->last++ = scale;
410 }
411 }
412
413 *b->last++ = CR;
414 *b->last++ = LF;
415 }
416
417 b->last = ngx_cpymem(b->last, "</pre><hr>", sizeof("</pre><hr>") - 1);
418
419 b->last = ngx_cpymem(b->last, tail, sizeof(tail) - 1);
420
421 r->headers_out.status = NGX_HTTP_OK;
422 r->headers_out.content_length_n = b->last - b->pos;
423
424 r->headers_out.content_type = ngx_list_push(&r->headers_out.headers);
425 if (r->headers_out.content_type == NULL) {
426 return NGX_HTTP_INTERNAL_SERVER_ERROR;
427 }
428
429 r->headers_out.content_type->key.len = 0;
430 r->headers_out.content_type->key.data = NULL;
431 r->headers_out.content_type->value.len = sizeof("text/html") - 1;
432 r->headers_out.content_type->value.data = (u_char *) "text/html";
433
434 rc = ngx_http_send_header(r);
435
436 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
437 return rc;
438 }
439
440 if (!r->main) {
441 b->last_buf = 1;
442 }
443
444 out.buf = b;
445 out.next = NULL;
446
447 return ngx_http_output_filter(r, &out);
448 }
449
450
451 static int ngx_http_autoindex_cmp_entries(const void *one, const void *two)
452 {
453 ngx_http_autoindex_entry_t *first = (ngx_http_autoindex_entry_t *) one;
454 ngx_http_autoindex_entry_t *second = (ngx_http_autoindex_entry_t *) two;
455
456 if (first->dir && !second->dir) {
457 /* move the directories to the start */
458 return -1;
459 }
460
461 if (!first->dir && second->dir) {
462 /* move the directories to the start */
463 return 1;
464 }
465
466 return (int) ngx_strcmp(first->name.data, second->name.data);
467 }
468
469
470 #if 0
471
472 static ngx_buf_t *ngx_http_autoindex_alloc(ngx_http_autoindex_ctx_t *ctx,
473 size_t size)
474 {
475 ngx_chain_t *cl;
476
477 if (ctx->buf) {
478
479 if ((size_t) (ctx->buf->end - ctx->buf->last) >= size) {
480 return ctx->buf;
481 }
482
483 ctx->size += ctx->buf->last - ctx->buf->pos;
484 }
485
486 if (!(ctx->buf = ngx_create_temp_buf(ctx->pool, ctx->alloc_size))) {
487 return NULL;
488 }
489
490 if (!(cl = ngx_alloc_chain_link(ctx->pool))) {
491 return NULL;
492 }
493
494 cl->buf = ctx->buf;
495 cl->next = NULL;
496
497 *ctx->last_out = cl;
498 ctx->last_out = &cl->next;
499
500 return ctx->buf;
501 }
502
503 #endif
504
505
506 static ngx_int_t ngx_http_autoindex_error(ngx_http_request_t *r, ngx_dir_t *dir,
507 u_char *name)
508 {
509 if (ngx_close_dir(dir) == NGX_ERROR) {
510 ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
511 ngx_close_dir_n " \"%s\" failed", name);
512 }
513
514 return NGX_HTTP_INTERNAL_SERVER_ERROR;
515 }
516
517
518 static ngx_int_t ngx_http_autoindex_init(ngx_cycle_t *cycle)
519 {
520 ngx_http_handler_pt *h;
521 ngx_http_core_main_conf_t *cmcf;
522
523 cmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_core_module);
524
525 h = ngx_array_push(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers);
526 if (h == NULL) {
527 return NGX_ERROR;
528 }
529
530 *h = ngx_http_autoindex_handler;
531
532 return NGX_OK;
533 }
534
535
536 static void *ngx_http_autoindex_create_loc_conf(ngx_conf_t *cf)
537 {
538 ngx_http_autoindex_loc_conf_t *conf;
539
540 conf = ngx_palloc(cf->pool, sizeof(ngx_http_autoindex_loc_conf_t));
541 if (conf == NULL) {
542 return NGX_CONF_ERROR;
543 }
544
545 conf->enable = NGX_CONF_UNSET;
546
547 return conf;
548 }
549
550
551 static char *ngx_http_autoindex_merge_loc_conf(ngx_conf_t *cf,
552 void *parent, void *child)
553 {
554 ngx_http_autoindex_loc_conf_t *prev = parent;
555 ngx_http_autoindex_loc_conf_t *conf = child;
556
557 ngx_conf_merge_value(conf->enable, prev->enable, 0);
558
559 return NGX_CONF_OK;
560 }